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Last Updated :2024/07/25

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Master

Affiliation (Master)

  • Faculty of Information Science and Technology　Systems Science and Informatics　Informatics for System Creation

Affiliation (Master)

  • Faculty of Information Science and Technology　Systems Science and Informatics　Informatics for System Creation

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Profile and Settings

Degree

  • Doctor of Engineering（Hokkaido University）

Profile and Settings

  • Name (Japanese)

    Tanaka

  • Name (Kana)

    Fumiki

  • Name

    200901001935851240

Achievement

Research Interests

  • 形状創成関数   加工プロセスモデル   工具情報モデル   情報モデル   CAM   仕様記述言語EXPRESS   加工作業モデル   オープンNC   Machining Feature   加工定義データマーク付け言語   多軸工作機械   CAD・CAM統合化   トレーサブル加工モデル   人-機械協調型生産システム   加工シミュレーション   工具パス生成   情報モデル工学   形状処理工学   生産システム   

Research Areas

  • Informatics / Human interfaces and interactions
  • Informatics / Database science
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Machine elements and tribology
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Design engineering
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Manufacturing and production engineering

Research Experience

  • 2007 - Today 北海道大学 大学院・情報科学研究科 准教授
  • 2003 - 北海道大学大学院情報科学研究科システム情報科学専攻 助教授
  • 2003 - Associate Professor

Committee Memberships

  • 2020/01 - Today   ISO TC184/SC1/WG7   Convenor

Awards

  • 2021/10 経済産業省 産業標準化事業表彰（経済産業大臣賞）

Published Papers

  • Using four-dimensional geometric models for representing dynamic machining process based on parallel processing by GPGPU
    ZHANG Tong, ONOSATO Masahiko, TANAKA Fumiki
    Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2021/11 [Refereed]
  • 金井 理, 伊達 宏昭, 田中 文基
    計測と制御 計測自動制御学会 ; 1962- 60 (11) 780 - 784 0453-4662 2021/11
  • Digital twinning of multi-axis machine tool for micro process planning
    Fumiki Tanaka
    Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2021/11 [Refereed]
  • Fumiki Tanaka, Yuta Nakajima, Eiji Egusa, Masahiko Onosato
    Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations - Proceedings of the 10th International Conference on Bridge Maintenaince, Safety and Management, IABMAS 2020 2984 - 2991 2021 [Refereed]
     
    A data model containing information of design and inspection data is important in inspection, maintenance, and asset management using information and communication technology. In this paper, we propose a three-dimensional (3D) bridge information model based on Industry Foundation Classes (IFC), which are a building information modeling standard, for the support of inspection, evaluation, and maintenance. Various data, such as text, photographs, point clouds, and measured polygon meshes, relating to the inspection, evaluation, and repair of a bridge are recorded in the 3D bridge model. A viewer system, which has the ability to visually present not only 3D geometric models but also a virtual-reality environment, is developed to show the model. This system also extracts information from past inspection reports written as documents. A data segmentation procedure is proposed for point clouds and measured polygon meshes.
  • Fumiki Tanaka
    2020 International Symposium on Flexible Automation (ISFA2020) 2020/07/08 [Refereed]
     
    Abstract Achieving high performance of machining production systems requires the use of multi-axis machine tools. In order to maximize the performance of multi-axis machine tools, micro process planning for creating machining data is important. Many researches on micro process planning mainly focused on 3-axis machining. As promising approaches among them, a micro process planning system was proposed that reuses actual machining cases and analyzes case data to derive the necessary rules. However, it is not always effective for multi-axis machining, because enough case data are not collected for micro process planning of a specific multi-axis machine tool. In this study, a digital twin of multi-axis machine tool in cyberspace is proposed to collect real and virtual machining case data for micro process planning.
  • TANAKA Fumiki, TSUCHIDA Makoto, ONOSATO Masahiko
    International Journal of Automation Technology 13 (4) 482‐489 - 489 1881-7629 2019/07/05 [Refereed][Not invited]
     
    Virtual reality (VR), augmented reality (AR), and mixed reality technologies are utilized at various stages of product lifecycle. For products with long lifecycles such as bridges and dams, the maintenance and inspection stages are very important to keep the product safe and well-functioning. One of the advantages of VR/AR is the ability to add important information such as past inspection data. Past inspection information is summarized in a document consisting of the 2D sketches of bridge degradation drawings. However, this degradation sketch is in 2D, and it has no correspondence with the 3D world. In this study, we propose a method to associate important information of 2D sketches with a 3D industry foundation classes (IFC) model, which is a standardized computer aided design model. To display a VR image of a bridge during the inspection process, the proposed method is applied to the 3D IFC model of the bridge and 2D degradation sketch of the inspection report.
  • 田中文基
    システム/制御/情報 63 (5) 182‐187  0916-1600 2019/05/15 [Refereed][Not invited]
  • ARAI Wataru, TANAKA Fumiki, ONOSATO Masahiko
    International Journal of Automation Technology 12 (5) 680‐687 - 687 1881-7629 2018/09 [Refereed][Not invited]
     
    A novel method is proposed for estimating the machining errors on machined surfaces caused by errors of multi-axis machine tools, such as geometric errors, based on a new generating method of tool swept volumes. In the proposed tool swept volume generation method, the boundary surfaces of the tool swept volumes are derived as triangular mesh models satisfying the required approximation accuracy based on the tangency condition. Using the proposed method, tool swept volumes can be derived for various tool paths including the tool self-intersecting motion. A tool path evaluation method based on the error vectors with respect to the start position of a specific tool path is also proposed. In the proposed evaluation method, error vectors on machined surfaces are derived by comparing the points on the nominal tool swept volumes (ex-cluding the machine tool errors) with the triangles on the error tool swept volumes (including the machine tool errors).
  • Bridge Information Modeling based on IFC for supporting maintenance management of existing bridges
    Fumiki Tanaka, Makoto Tsuchida, Masahiko Onosato, Hiroaki Date, Satoshi Kanai, Yoshiro Hada, Manabu Nakao, Hiroki Kobayashi, Eiji Hasegawa, Toshiya Sugawara, Takateru Oyama
    Proceedings of ICCCBE 2018 2018 [Refereed][Not invited]
  • HAMANO Takuto, ONOSATO Masahiko, TANAKA Fumiki
    Transactions of the JSME (in Japanese) 一般社団法人 日本機械学会 84 (859) 17 - 00480-17-00480 2018 [Refereed][Not invited]
     
    <p>House-collapsing simulation using a physics engine is an effective method for acquiring structural data regarding collapsed houses with the aim of understanding the properties of destroyed or disordered structures for designing and operating rescue-robots. However, the simulation needs a lot of time since a house model consists of a large number of rigid bodies and joints. In order to find an appropriate configuration of computer hardware and software for accelerating house-collapsing simulations, this study evaluates the performances of four major physics engines, namely Open Dynamics Engine, Bullet Physics Library, PhysX 2.8.1 and PhysX 3.4, by comparing the processing time about two sample structures including only rigid bodies or rigid bodies constrained by joints. Results of the experiments show that the use of multi-core CPU and GPU, especially high-speed GPU, on PhysX 3.4 has the best performance since it can process a large number of rigid bodies and joints in parallel. Based on the results, an existing simulation system has been improved and the collapsing process of one-house, which consists of about 7,500 rigid bodies and 15,000 joints, can be simulated in real-time using multi-core CPU and GPU. Moreover, this study estimates the size of GPU memory which is required for simulating the large-scale field on PhysX 3.4 to enlarge the scale of simulation. Consequently, the collapsing process of thirty-houses which includes interactions between collapsed houses can be simulated.</p>
  • Yoshiro Hada, Manabu Nakao, Moyuru Yamada, Hiroki Kobayashi, Naoyuki Sawasaki, Katsunori Yoko Ji, Satoshi Kanai, Fumiki Tanaka, Hiroaki Date, Sarthak Pathak, Atsushi Yamashita, Manabu Yamada, Toshiya Sugawara
    Journal of Disaster Research 12 (3) 593 - 606 1883-8030 2017/06/01 [Refereed][Not invited]
     
    Recently, many countries have faced serious problems associated with aging civil infra structures such as bridges, tunnels, dams, highways and so on. Aging infrastructures are increasing year by year and suitable maintenance actions are necessary to maintain their safety and serviceability. In fact, infrastructure deterioration has caused serious problems in the past. In order to prevent accidents with civil infrastructures, supervisors must spend a lot of money to maintain the safe conditions of infrastructures. Therefore, new technologies are required to reduce maintenance costs. In 2014 the Japanese government started the Cross-Ministerial Strategic Innovation Promotion Program (SIP), and technologies for infrastructure maintenance have been studied in the SIP project [1]. Fujitsu Limited, Hokkaido University, The University of Tokyo, Nagoya Institute of Technology and Docon Co. Limited have been engaged in the SIP project to develop a bridge inspection support system using information technology and robotic technology. Our system is divided into the following two main parts: bridge inspection support robots using a two-wheeled multicopter, and an inspection data management system utilizing 3D modeling technology. In this paper, we report the bridge inspection support system developed in our SIP project.
  • Arai Wataru, Tanaka Fumiki, Onosato Masahiko
    Proceedings of JSPE Semestrial Meeting 公益社団法人 精密工学会 2017 209 - 210 2017 
    工具掃引体は工具表面上の掃引領域の集合であり，掃引領域の特徴を表す工具掃引状態は工具形状・工具運動により異なる．本研究では，誤差を伴う多軸加工での工具掃引体を導出するため，様々な工具の工具掃引状態を解析・分類してきた．本報では，トーラス形状として表現されるコーナーラジアスをもつラジアスエンドミルの工具掃引状態を解析・分類する．また，代表的な多軸加工運動における掃引領域を導出する．
  • Kawabata Kazuma, Tanaka Fumiki, Onosato Masahiko
    Proceedings of JSPE Semestrial Meeting 公益社団法人 精密工学会 2017 405 - 406 2017 
    Iso-scallop法はカスプ高さを常に一定の値とする工具経路生成法であり，全体的な工具経路長を削減可能とする．しかし，最初のパスから隣接するパスを生成するため，適切な初期パスが必要となる．本研究では，形状の各点での切削量最大方向をテンソル行列で表現し，テンソル解析より切削量最大の方向が類似した領域で形状を分割する．その後，各領域で初期パスを生成し，iso-scallop法より工具経路を生成する．
  • Hakoishi Kai, Onosato Masahiko, Tanaka Fumiki
    Proceedings of JSPE Semestrial Meeting 公益社団法人 精密工学会 2017 31 - 32 2017 
    災害発生時は，住民の現在位置や道路の閉塞など，災害発生前に想定していた事前情報と異なる状況となる場合が多く，その差異により避難行動は様々な影響を受ける．中でも，災害時要援護者の避難支援においては，要援護者・支援者の現在位置や支援の可否等の点で差異が発生することが多く，これによる支援効率の低下や支援者の被災リスクの増加が懸念される．この差異をシミュレータ上で再現することで，避難行動への影響を評価し，考察する．
  • Hamano Takuto, Onosato Masahiko, Tanaka Fumiki
    Proceedings of JSPE Semestrial Meeting 公益社団法人 精密工学会 2017 557 - 558 2017 
    仮想空間上にがれきフィールドを生成する家屋倒壊シミュレーションは，多数の剛体およびジョイントを扱う必要があるため，CPUのみの処理では時間がかかる．本研究では，物理エンジン上でCPUとGPUを用いることにより，倒壊シミュレーションの高速化を行う．そしてシミュレーションの規模を，複数の家屋から構成される街区単位へと拡大することで，倒壊家屋間の干渉を考慮可能な大規模倒壊シミュレーションを可能にした．
  • Matsunaga Daiki, Onosato Masahiko, Tanaka Fumiki
    Proceedings of JSPE Semestrial Meeting 公益社団法人 精密工学会 2017 597 - 598 2017 
    本研究室では時空間に連続な形状表現方法として，3次元形状モデルに時間変化の情報を含めた4次元メッシュモデリングに関する研究を行ってきた．本報では，3次元四面体の時間変化を表す4次元五胞体のメッシュモデルを用いて，干渉する2つの4次元メッシュモデルの境界交差判定手法を提案する．また，その2つの五胞体メッシュモデルの積集合形状を導出するため，境界交差判定より得られる2モデル間の交点から適切な4次元四面体メッシュを導出する方法を提案する．
  • Tanaka Fumiki, Kobayashi Kyouhei, Onosato Masahiko, Kobayashi Hiroki, Nakao Manabu, Hada Yoshiro, Yokoji Katsunori, Ohyama Takateru, Sugawara Toshiya
    Proceedings of JSPE Semestrial Meeting 公益社団法人 精密工学会 2017 543 - 544 2017 
    近年，橋梁などの土木構造物の維持管理に対してＩＣＴ技術を用いて効率化する動きが盛んである．本研究では，BIM国際標準を拡張した橋梁維持管理情報モデルを提案し，点検現場で使用するためにweb配信するシステムを開発する．本報では，国内で使用される過去の点検調書を入出力可能とするための要素技術を開発する．
  • Aoyama Hiroki, Onosato Masahiko, Tanaka Fumiki
    Proceedings of JSPE Semestrial Meeting 公益社団法人 精密工学会 2017 547 - 548 2017 
    規格化された直方体の木材を用いたレスキューロボット性能評価用のがれきフィールドでの多視点点群計測によりがれき要素の位置・姿勢の推定と寸法の判定を行う．多くのオクルージョンが存在するがれきフィールドでも有効な直方体要素の検出法と各がれき要素の位置・姿勢を決定する3次元座標系の導出方法，点群からの寸法判定方法を提案する．位置・姿勢・寸法判定ができたがれき要素をデジタルがれきとしてPC上で再構築することを目指す．
  • HAMANO Takuto, ONOSATO Masahiko, TANAKA Fumiki
    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 一般社団法人 日本機械学会 2017 1P2 - O03 2017 

    Rescue robot simulation is an effective method for evaluating the performance of rescue robot in various rubble fields. However, simulating a rescue robot in a large rubble field such as a collapsed house needs a lot of time, since it needs to process a large number of rigid bodies and joints. This study accelerates the rescue robot simulation by using multi-core CPU and GPU on a physics engine. To consider the effect of GPU about rescue robot simulation, this study measures the processing time of two situations, including only rescue robot or a rescue robot and rubbles, on two computers equipped with different GPU. Result of the experiments show that the use of GPU, especially high-speed GPU, is effective for a situation which includes a rescue robot and rubbles. Based on the results, this study simulates a rescue robot in a collapsed house in real-time using GPU.

  • ARAI Wataru, TANAKA Fumiki, ONOSATO Masahiko
    Journal of the Japan Society for Precision Engineering 公益社団法人 精密工学会 83 (9) 883 - 887 2017 [Refereed][Not invited]
     
    Error characteristics of multi-axis machine tools such as geometric errors cause machined errors on machined surfaces of machined parts. To estimate the machined errors on machined parts, shapes of machined parts with machined errors should be derived in computer simulation. By representing shapes of machined parts as difference set between a workpiece and tool swept volumes, the machined errors on machined surfaces can be estimated. A tool swept volume is composed of tool swept areas on tool surfaces that form surfaces of the tool swept volume. Tool swept areas on tool surfaces change its shape depending on tool motion. In order to derive tool swept volumes without any restriction on tool motion, all shape types of tool swept areas should be classified as tool swept types for general tools in multi-axis machining. Hence, in our previous study, tool swept types of cylindrical surface (side surface of a flat endmill), tapered surface (side surface of a taper endmill) and planar surface (bottom surface of an endmill) were classified. In this paper, tool swept types of torus that represents a corner radius of a radius endmill are classified into 8 tool swept types.
  • KONDO Tsukasa, YAMADA Makoto, KENCHI Toshiaki, FURUMATA Kazunao, TANAKA Fumiki
    Journal of the Japan Society for Precision Engineering 公益社団法人 精密工学会 83 (1) 108 - 112 0912-0289 2017 [Not refereed][Not invited]
     
    Cutting speeds on the cutting edge of Ball-nose end mill vary from the bottom to the top of the cutting edge, thus the portion of the cutting edge that has a suitable cutting speed should be used in the finish milling process. This paper describes a procedure of generation of surface element groups that can be machined by the high performance portion of cutting edge in the finish milling process. For this purpose, performance values of cutting points on the cutting edge are proposed. The tool attitude to the surface element is evaluated by the ratio of the area machined by the high performance portion of cutting edge based on proposed performance values. The tool attitude having maximum area of the surface elements that can be machined with the high performance is derived, and a set of surface elements that can be machined by the high performance portion of cutting edge for the tool attitude is obtained as the surface element groups.
  • Matsunaga Daiki, Onosato Masahiko, Tanaka Fumiki
    Proceedings of JSPE Semestrial Meeting 公益社団法人 精密工学会 2016 653 - 654 2016 
    本研究では，任意時間の切れ刃の加工領域を明示的に表現するため，切れ刃を持つボールエンドミルモデルの3次元メッシュモデル生成手法を検討し，3次元形状の時間変化を時間軸方向に連続に表現可能な4次元メッシュモデリングに適応することを提案してきた．本報では，先端球部切れ刃の形状表現を改良したボールエンドミルモデルと，工具運動軌跡より生成した4次元メッシュモデルより，時間変化に伴う切れ刃加工領域の変化を確認した．
  • Kanazawa Yuka, Onosato Masahiko, Tanaka Fumiki
    Proceedings of JSPE Semestrial Meeting 公益社団法人 精密工学会 2016 199 - 200 2016 
    任意のオフセット距離における3次元オフセット形状の高速な導出や，あるオフセット距離における複数立体の干渉程度判定等への利用のため，オフセット距離を任意に選択可能とする可変オフセット形状を作成する必要がある．本研究では，可変オフセット形状として，基準となる3次元凸形状三角形メッシュモデルからのオフセット距離を第4 軸と定義し，4次元空間中の四面体形状より表現される4次元メッシュモデルとして定義する．
  • Takuto Hamano, Masahiko Onosato, Fumiki Tanaka
    2016 IEEE INTERNATIONAL SYMPOSIUM ON SAFETY, SECURITY, AND RESCUE ROBOTICS (SSRR) 2016 (SSRR) 358 - 363 2374-3247 2016 [Refereed][Not invited]
     
    House-collapsing simulation is an effective method for acquiring structural data regarding collapsed houses with the aim of understanding the properties of destroyed or disordered structures for designing and operating urban search and rescue (USAR) robots. The purpose of this study is to find an appropriate configuration of computer hardware and software that can accelerate house-collapsing simulations. This study compares the performances of three major physics engines, namely PhysX, Bullet Physics Library, and Open Dynamics Engine (ODE), on four computers equipped with different CPU and GPU configurations with respect to a sample structure, including a large number of rigid bodies combined with joint elements. Results of the experiments show that multi-threaded processing on PhysX has the best performance among the engines tested, and the use of multiple CPU and GPU configurations does not contribute to the acceleration of collapsing simulations for joint-connected rigid body structures in any of the evaluated versions of the physics engines. Based on the results, an existing simulation system for collapsing processes has been improved and can successfully speed up the process of collapsing simulations to approximately four times as fast as our previous system. To achieve greater speeds and larger-scale simulations, up-to-date physics engine technologies must be continuously examined and adopted for practical use in house-collapsing simulations.
  • Bridge Information Model Based on IFC Standards and Web Content Providing System for Supporting an Inspection Process
    Fumiki Tanaka, Masato Hori, Masahiko Onosato, Hiroaki Date, Satoshi Kanai
    Proceedings of ICCCBE 2016 2016 [Refereed][Not invited]
  • Wataru Arai, Fumiki Tanaka, Masahiko Onosato
    2016 INTERNATIONAL SYMPOSIUM ON FLEXIBLE AUTOMATION (ISFA) 2016 (ISFA) 303 - 310 2016 [Refereed][Not invited]
     
    In order to satisfy the requirements of the machined part under effects of machine tool error characteristics such as geometric errors, the errors on the machined surfaces caused by the error characteristics should be estimated and taken into account in the process planning before actual machining. To estimate the amount of machining errors on the machined surfaces, the shape of the machined part should be derived. In computer simulation, a shape of a machined part is derived as a difference set between a workpiece and tool swept volumes. Hence, in this study, the generating method for tool swept volumes under effects of machine tool error characteristics has been proposed based on the tangency condition. In the previously proposed method, it was assumed that there was only one swept state, that is, two curves on a tool that generate tool swept volumes. However, there are other swept states of a tool, for example, two lines and a circle that generate tool swept volumes, and tool swept volumes of such states cannot be derived by the previously proposed method. Hence, in this paper, swept states of the generalized tool are classified as tool swept types based on the analysis of the tangency condition. Furthermore, the generating method of tool swept volumes for each tool swept type is proposed.
  • Keita Takahashi, Masahiko Onosato, Fumiki Tanaka
    Journal of Computational Design and Engineering 2 (2) 105 - 112 2288-5048 2015/04/01 [Refereed][Not invited]
     
    Product Lifecycle Management (PLM) ranges from design concepts of products to disposal. In this paper, we focus on the production planning phase in PLM, which is related to process planning and production scheduling and so on. In this study, key decisions for the creation of production plans are defined as production-planning attributes. Production-planning attributes correlate complexly in production-planning problems. Traditionally, the production-planning problem splits sub-problems based on experiences, because of the complexity. In addition, the orders in which to solve each sub-problem are determined by priorities between sub-problems. However, such approaches make solution space over-restricted and make it difficult to find a better solution. We have proposed a representation of combinations of alternatives in production-planning attributes by using Zero-Suppressed Binary Decision Diagrams. The ZDD represents only feasible combinations of alternatives that satisfy constraints in the production planning. Moreover, we have developed a solution search method that solves production-planning problems with ZDDs. In this paper, we propose an approach for managing solution candidates by ZDDs׳ network for addressing larger production-planning problems. The network can be created by linkages of ZDDs that express constraints in individual sub-problems and between sub-problems. The benefit of this approach is that it represents solution space, satisfying whole constraints in the production planning. This case study shows that the validity of the proposed approach.
  • 川尻将大, 小野里雅彦, 田中文基
    計測自動制御学会論文集 51 (1) 16 - 23 0453-4654 2015/01/31 [Not refereed][Not invited]
  • Arai Wataru, Tanaka Fumiki, Onosato Masahiko
    Proceedings of JSPE Semestrial Meeting 公益社団法人 精密工学会 2015 571 - 572 2015 
    多軸工作機械の誤差特性による影響は実加工前に確認する必要がある．本研究では，誤差を伴う多軸加工における加工形状を導出するための，工具掃引条件に基づいた工具掃引体導出手法を提案してきた．しかし，提案手法では，工具掃引体に生じる自己交差が問題となっている．自己交差は，例えば，工具進行方向の急激な変化等によって生じる．本報では，工具掃引体における自己交差現象の整理を行い，自己交差への対応手法について提案する．
  • Koshiji Hiroki, Onosato Masahiko, Tanaka Fumiki
    Proceedings of JSPE Semestrial Meeting 公益社団法人 精密工学会 2015 109 - 110 2015 
    近年，国内の携帯電話における市場構造の見直しが進められている．本研究の目的は，予測される市場構造の変化に対して，その環境影響の評価を行うことである．マルチエージェント・システムを用いて，個々の選好や過去の購買行動などに応じた消費者の携帯電話についての意思決定をモデル化し，人工社会を構築した．このモデル上で，異なる市場構造を持つシナリオを設定し，使用済機器の回収量への影響を分析する．
  • Arai Wataru, Tanaka Fumiki, Onosato Masahiko
    Proceedings of JSPE Semestrial Meeting 公益社団法人 精密工学会 2015 339 - 340 2015 
    加工シミュレーションでは，加工形状導出の際，工具掃引線の集合である工具掃引体を求める必要がある．工具姿勢が連続的に変化する同時5軸加工や誤差特性を持つ工作機械による加工では，工具掃引線が曲線となるため算出が難しく，従来は直線として扱われてきたことが多い．本研究では，幾何学的誤差を持つ5軸工作機械による加工を対象に，工具掃引条件をもとに工具掃引点列，工具掃引曲線，工具掃引体の導出を行なう．
  • Takahashi Keita, Onosato Masahiko, Tanaka Fumiki
    Transactions of the Institute of Systems, Control and Information Engineers 一般社団法人 システム制御情報学会 28 (3) 107 - 115 1342-5668 2015 [Not refereed][Not invited]
     
    Dynamic changes as machine breakdowns make current production plan infeasible and inaccurate. The influence of dynamic changes spread to whole production planning that consists of several domains such as process planning, production scheduling and so on. In this study, solution space in the production planning is defined as comprehensive. We have applied Zero-Suppressed Binary Decision Diagrams (ZDDs) for the representation of solution candidates that satisfy constraints between such domains so for. In dynamic production planning problems, manufacturing achievements and dynamic changes may make solution space change. In this paper, we define such events as constraints for ZDDs and propose an approach to update the ZDD to deal with the events. Moreover,we propose a genetic algorithm (GA) to find solutions in the ZDD. Experimental results demonstrate that the proposed approach to address such event with ZDDs and the GA are effriciently used to solve the dynamic production planning problem.
  • Wataru Arai, Fumiki Tanaka, Masahiko Onosato
    Proc. of The 8th International Conference on Leading Edge Manufacturing in 21st Century 1 - 6 2015 [Refereed][Not invited]
  • Integration of CAD data and as-is data into a bridge information model and a web contents providing system for bridge inspection and maintenance
    Fumiki Tanaka, Masato Hori, Masahiko Onosato
    The Asian Conference on Design and Digital Engineering 2015 2015 [Refereed][Not invited]
  • Ikuru Otomo, Masahiko Onosato, Fumiki Tanaka
    Journal of Computational Design and Engineering 1 (2) 96 - 102 2288-5048 2014/04/01 [Refereed][Not invited]
     
    In the field of design and manufacturing, there are many problems with managing dynamic states of three-dimensional (3D) objects. In order to solve these problems, the four-dimensional (4D) mesh model and its modeling system have been proposed. The 4D mesh model is defined as a 4D object model that is bounded by tetrahedral cells, and can represent spatio-temporal changes of a 3D object continuously. The 4D mesh model helps to solve dynamic problems of 3D models as geometric problems. However, the construction of the 4D mesh model is limited on the time-series 3D voxel data based method. This method is memory-hogging and requires much computing time. In this research, we propose a new method of constructing the 4D mesh model that derives from the 3D mesh model with continuous rigid body movement. This method is realized by making a swept shape of a 3D mesh model in the fourth dimension and its tetrahe-dralization. Here, the rigid body movement is a screwed movement, which is a combination of translational and rotational movement.
  • Hirotaka Kameyama, Ikuru Otomo, Masahiko Onosato, Fumiki Tanaka
    IJAT Fuji Technology Press 8 (3) 437 - 444 1881-7629 2014 [Refereed][Not invited]
  • Fumiki Tanaka, Hiroyuki Abe, Shinji Igari, Masahiko Onosato
    International Journal of Automation Technology 8 (3) 388 - 395 1883-8022 2014 [Refereed][Not invited]
     
    Annotations on Geometric Dimensioning and Tolerancing (GD& T), surface roughness, etc. are needed for machining or measuring. However, these annotations are not used for the digital format in the product development process, nor is there any clear, explicit relationship between annotation, machining information, and measuring results. In this research, an integrated information model for design, machining, and measuring based on annotated features is proposed. A model for surface texture is also proposed because surface texture parameters are closely related to machining process parameters. A modeling system for the proposed integrated model is also implemented.
  • Keita Takahashi, Masahiko Onosato, Fumiki Tanaka
    JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING 8 (4) JAMDSM0061 - JAMDSM0061 1881-3054 2014 [Not refereed][Not invited]
     
    The goal of the production-planning problem is to find the optimal solution from combinations that satisfy constraints. Traditionally, production-planning problems have been treated separately, due to the problem size and complex constraints, whereas the constraints in production planning spread to the entirety of production planning. For example, when the dynamic changes as machine breakdowns and new machine addition occur, a production plan should be modified with new constraints caused by these dynamic changes. Therefore, it is required to represent a set of solution candidates that satisfy constraints in production planning. Zero-Suppressed Binary Decision Diagram (ZDD) is a directed graph representation of Boolean function and can efficiently represent a set of combinations. This paper describes the validity of application of the ZDD to production planning to represent a set of solution candidates. Experimental results applied to a sample-planning problem demonstrate that the ZDD is efficiently used for production planning and for dealing with dynamic changes.
  • Direct Construction of Four-Dimensional Mesh Model from Three-Dimensional Object with Continuous Rigid Body Movement,
    Ikuru Otomo, Masahiko Onosato, Fumiki Tanaka
    Proceedings of 2013 Asian Conference on Design and Digital Engineering (ACCDE 2013) 147 - 154 2013/08 [Refereed][Not invited]
  • Weaving a four‐dimensional mesh model from a series of three‐dimensional voxel model
    Masahiko Onosato, Yosuke Saito, Fumiki Tanaka, Ryoji Kawagishi
    Proceedings of International CAD Conference and Exhibition 2013 (CAD'13) 2013/06 [Refereed][Not invited]
  • IGARI Shinji, TANAKA Fumiki, ONOSATO Masahiko
    Transactions of the Institute of Systems, Control and Information Engineers 一般社団法人 システム制御情報学会 26 (3) 87 - 94 1342-5668 2013/03/15 [Not refereed][Not invited]
     
    This study proposes an automatically customizable micro process planning system that reflects the change of properties of an actual machine tool to generate optimal machining information. The system consists of an updatable machining database and a database-oriented micro process planning algorithm. A machining database is updated based on analyzing NC data that are adaptively generated for an actual machine tool by skilled process planners. From the updated machining database, a database-oriented micro process planning algorithm is generated by a decision tree and a regression tree. Machining strategy and cutting tools are determined using IF-THEN rules that are generated from the database by the decision tree method. Cutting conditions are determined from a feasible regression equation. Regression equations and selection rules of these equations are generated from the database by the regression tree method. An example of micro process planning using the generated algorithm is also shown. <br>
  • Shinji Igari, Fumiki Tanaka, Masahiko Onosato
    PROCEEDINGS OF THE ASME/ISCIE INTERNATIONAL SYMPOSIUM ON FLEXIBLE AUTOMATION, ISFA 2012 35 - 42 2013 [Refereed][Not invited]
     
    To generate optimal machining information, an automatically customizable micro process planning system that reflects the change of properties of an actual machine tool is proposed. The system consists of an updatable machining database and a database oriented micro process planning algorithm. A machining database is updated based on analyzing NC data that are adaptively generated for an actual machine tool by skilled process planners. From the updated machining database, a database oriented micro process planning algorithm is generated by a decision tree and a regression tree. Machining strategy and cutting tools are determined using IF-THEN rules that are generated from the database by decision tree method. Cutting conditions were determined from a feasible regression equation. Regression equations and selection rules of these equations were generated from the database by regression tree method. The example of micro process planning using the generated algorithm is also shown.
  • 猪狩真二, 田中文基, 川口貴司, 川口貴司, 小野里雅彦
    精密工学会誌 公益社団法人 精密工学会 79 (1) 93 - 98 0912-0289 2013/01 [Refereed][Not invited]
     
    To automatically generate and update a machining database for feature based process/operation planning, a generating and updating method of a machining database based on Numerical Control (NC) data analysis is proposed. As the content of the database, the ISO 14649 machining information which consists of machining feature, machining operation, machining strategy, cutting tool and cutting conditions is derived from NC data, a cutting tool model and a rawpiece model. To derive the machining information for a machining feature, the tool paths are split according to their geometrical characteristics of the tool path, and a machining feature is derived from the machining process model which is generated from a split tool path, a cutting tool model and a rawpiece model. A machining operation for a machining feature is identified as roughing or finishing operation based on the geometrical relationship between the machining process models. A machining strategy is extracted from a split tool path based on tool motion pattern. As the cutting conditions, spindle speed and feed rate are derived from S and F code of NC data. The example of generating ISO 14649 machining information from NC data using the proposed analysis method is shown.
  • Takahashi Keita, Onosato Masahiko, Tanaka Fumiki
    Proceedings of JSPE Semestrial Meeting 公益社団法人 精密工学会 2013 743 - 744 2013 
    前報で生産プランニングにおける存在しえない組み合わせを除去し，解空間をゼロサプレス型BDD(ZDD)を用いて表現する方法について述べた．本研究で扱うZDDは，スケジューリング可能な各計画および計画間の制約を満たす組み合わせ集合を表している．本報では，それら制約を満たすZDDから適切な組み合わせを探索する手法について論ずる．
  • 齋藤 洋介, 小野里 雅彦, 田中 文基
    精密工学会学術講演会講演論文集 公益社団法人 精密工学会 2013 795 - 796 2013 
    本研究では、3次元ボクセルモデル時系列データからの4次元メッシュモデル生成をGPGPUの技術を用いて高速化することを目的としている。前報では4次元メッシュモデル生成のボクセル処理の並列化方法を提案し、GPGPUで実証し検証を行った。本報では、CUDAのWarpなどを有効活用し、並列化処理の改善を行う。更に、GPUのメモリ配置を検討することにより、前報より解像度の高い3次元ボクセルモデルから4次元メッシュモデルの生成を行う。
  • Tokumoto Kenji, Tanaka Fumiki, Onosato Masahiko
    Proceedings of JSPE Semestrial Meeting 公益社団法人 精密工学会 2013 21 - 22 2013 
    工作機械に内在する誤差への従来の対策としては，各誤差量を同定したのち，工作機械のメンテナンスを行う等があるが，時間とコストが多大にかかってしまう．そこで本研究ではNCコードの修正による誤差補償を目的とし，誤差補償モデルを提案している．本報では平面等の基準形状を測定することにより得られた測定値から，提案する誤差補償モデルのパラメータを導出する方法を提案し，シミュレーションにより妥当性を検証する．
  • Shinji Igari, Fumiki Tanaka, Masahiko Onosato
    International Journal of Automation Technology 6 (6) 717 - 723 1883-8022 2012 [Refereed][Not invited]
     
    To generate optimal machining information, a machining database and operation planning algorithm have to be customized for an actual machine tool based on the knowledge of a skilled planner. In this paper, a method to update a machining database from NC data is proposed. The database is updated by adding machining information extracted from NC data, based on tool path analysis. A method of generating a database-oriented planning algorithm from the machining database based on a decision tree method is also proposed. Machining strategy, cutting tool, and cutting conditions are determined based on the algorithm and k nearest neighbor method.
  • Kameyama Hirotaka, Otomo Ikuru, Onosato Masahiko, Tanaka Fumiki
    Proceedings of JSPE Semestrial Meeting 公益社団法人 精密工学会 2012 565 - 566 2012 
    切削加工では，工具やワークの運動履歴を連続的に表現できることが望まれる．本研究ではこれまで，５軸切削シミュレーションで得られる工具・ワークのボクセル時系列データから時空間モデル（４次元メッシュモデル）を生成し，ワーク形状変化を連続的に表現することを提案してきた．本報では，データ量の削減やモデル表現精度の向上のため，ボクセルを用いず３次元メッシュを入力として工具やワークの４次元形状の取得を行う．
  • Igari Shinji, Tanaka Fumiki, Onosato Masahiko
    Proceedings of JSPE Semestrial Meeting 公益社団法人 精密工学会 2012 535 - 536 2012 
    本研究は，加工技術データベースのNCデータ解析による更新手法を提案し，工程・作業設計へ応用することを目的とする．本報では，データベース更新に伴い加工技術データベース中で加工情報が競合する場合に，より優れた加工情報に基づき作業設計アルゴリズムを改善するために，加工情報に対して加工能率や環境負荷などの複数の観点に基づく総合的な評価を導出する手法を提案し，提案手法に基づく加工情報評価の実行例を示す．
  • 高橋 啓太, 小野里 雅彦, 田中 文基
    精密工学会学術講演会講演論文集 公益社団法人 精密工学会 2012 765 - 766 2012 
    生産ショップフロア内では，機械故障やジョブの遅れ等の動的な変化が日々発生する．本研究では，そのような動的な変化に対して適応し生産を行うための生産プランニングのフレームワークを検討する．本稿では，生産実施のための計画段階である工程設計とスケジューリングにおける選択性について述べ，変化に適応するためにそれら選択性が生産に与える影響について論ずる．
  • Masahiko Onosato, Shota Yamamoto, Masahiro Kawajiri, Fumiki Tanaka
    2012 IEEE INTERNATIONAL SYMPOSIUM ON SAFETY, SECURITY, AND RESCUE ROBOTICS (SSRR) 1 - 6 2012 [Refereed][Not invited]
     
    The paper presents an approach to an engineering of "gareki", which generally means destroyed or disordered structures in Japanese. Gareki has never been a subject for both natural sciences and engineering. Therefore we have had less scientific knowledge about gareki, while search and rescue activities in earthquake disasters need it much. The first part of the paper discusses what to be studied about gareki with respect to search and rescue activities. To share knowledge about gareki, the concept of digital gareki archives is explained and four approaches for gareki data acquisition are discussed. As a prototype of digital gareki archives, a computer software system named Virtual Gareki Field (VGF) which generates digital gareki data based on collapsing process simulation has been developed and models and tools related to VGF are explained.
  • IGARI Shinji, TANAKA Fumiki, ONOSATO Masahiko
    Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 一般社団法人日本機械学会 2011 (6) 3268 - 1"-"3268-6" 2011 [Refereed][Not invited]
     
    To generate optimal machining information, a machining database and operation planning algorithm have to be customized for an actual machine tool based on knowledge of a skilled planner. In this paper, a method to update a machining database from NC data is proposed. The database is updated by adding machining information extracted from NC data based on tool path analysis. A method to generate a database oriented planning algorithm from the machining database based on a decision tree method is also proposed. Machining strategy, cutting tool and cutting conditions are determined based on the algorithm and k nearest neighbor method.
  • Micro Process Planning for an Actual Machine Tool with Updatable Machining Database
    The 44rd CIRP Conference on Manufacturing Systems (CD-ROM) 33  2011 [Refereed][Not invited]
  • Igari Shinji, Tanaka Fumiki, Onosato Masahiko
    Proceedings of JSPE Semestrial Meeting 公益社団法人 精密工学会 2011 39 - 40 2011 
    本研究は，工作機械毎の加工技術データベースのNCデータ解析による更新手法を提案し，工程・作業設計へ応用することを目的とする．高効率・高品質な加工作業のために，個々の工作機械毎に適した作業設計を行うには，工作機械毎に加工技術データベースおよび作業設計アルゴリズムをカスタマイズする必要がある．本報では，加工技術データベースからの決定木および回帰木に基づく作業設計アルゴリズム作成手法を提案する．
  • Terashima Takahiro, Tanaka Fumiki, Onosato Masahiko
    Proceedings of JSPE Semestrial Meeting 公益社団法人 精密工学会 2011 329 - 330 2011 
    工作機械やロボットの動作検証において，現在，共通した機構形状モデル，統一的な逆運動学解法がない問題がある．本研究では，工作機械に対し，機構形状統合モデルを国際規格STEP(ISO10303)に基づいて提案し，グレブナ基底による統一的逆運動学解法を提案してきた．本報では，ロボットとエンドエフェクタに対し，機構，形状，機能のモデル化と，提案した逆運動学解法を用いた運動シミュレーションについて報告する．
  • Fumiki Tanaka
    IJAT 5 (2) 201 - 205 2011 [Refereed][Not invited]
  • Yoshihito Kikuchi, Hiroyuki Hiraoka, Akihiko Otaka, Fumiki Tanaka, Kazuya G. Kobayashi, Atsuto Soma
    JOURNAL OF COMPUTING AND INFORMATION SCIENCE IN ENGINEERING 10 (2) 021003-1-021003-8  1530-9827 2010/06 [Refereed][Not invited]
     
    In the communication and sharing of product data, if the difference of the required data quality and the data quality actually incorporated into data is significant, it causes various problems. It is often the case that a creator of low quality data does not realize it unless it is harmful for his job. In most cases, low quality data passed to subsequent processes, such as manufacturing process, cause problems since these are not appropriate from the machining precision point of view or the detailed shape modeling point of view. In these cases, rework or repair of data is necessitated before commencing the target process, which results in significant economy loss and delay of product development. Today's product model data are dumb data because design intents and data quality incorporated are not explicitly represented. Receiving systems cannot know whether the data passed possess sufficient quality for the target job or not. Another problem is that engineers in later processes, such as the manufacturing process, cannot issue data quality related request beforehand in a commonly agreed manner. The problems mentioned above are caused by the lack of a commonly agreed representation of product data quality (PDQ) information. Our proposed solution is designed to enable the communication and sharing of data quality information. This paper reports the development of a PDQ standard (ISO 10303-59), which is a resource part of ISO 10303 Standard for the Exchange of Product Model Data (STEP) (2008, "ISO 10303-59, Industrial Automation Systems and Integration. Product Data Representation and Exchange. Part 59 Integrated Generic Resource: Quality of Product Shape Data," International Standard Organization, Geneva). The objective of ISO 10303-59 is to establish a PDQ model and to enable the use of PDQ data independently or in combination with product data. The developed PDQ information model represents concepts such as data quality criteria, measurement requirements, and measured results. Based on the PDQ model, the PDQ for shape data model, which is a specialization of the PDQ model to 3D shape data quality, is also developed.[DOI: 10.1115/1.3402615]
  • CURRENT SITUATION AND PROBLEMS FOR REPRESENTATION OF TOLERANCE AND SURFACE TEXTURE IN 3D CAD MODEL
    Proc. The 10th International symposium on Measurement and Quality Control (CD-ROM) E6-048  2010 [Refereed][Not invited]
  • Integrated Model of Machine Tools and Uniform Inverse Kinematics Calculation for Multi-Axis Machining
    Proc. the 2010 International Symposium on Flexible Automation (CD-ROM) JPL-2553  2010 [Refereed][Not invited]
  • Analysis of NC data based on feature information model of shape and process for retaining machining information
    The 43rd CIRP Conference on Manufacturing Systems 659 - 666 2010 [Refereed][Not invited]
  • Development of Digital Semantic Machining Models for STEP-NC Based on STEP Technology
    Advanced Design and Manufacturing Based on STEP 293 - 306 2009 [Not refereed][Not invited]
  • Shinji Igari, Fumiki Tanaka, Masahiko Onosato
    2009 IEEE INTERNATIONAL CONFERENCE ON CONTROL AND AUTOMATION, VOLS 1-3 1241 - 1247 2009 [Not refereed][Not invited]
     
    The current NC data format (ISO 6983) puts restrictions on CNC machine tools because the NC data are specified in a low-level language, describing machine axis motion and some machine instructions. STEP-NC remedies the shortcomings of current NC data and has many advantages. However, to realize STEP-NC based machining systems, it is necessary to perform machining feature extraction, to generate machine-specific information, and to create a relationship between coordinate systems without disturbing data porting. This paper proposes the solutions for these problems and introduces a prototype of STEP-NC based process planning and a machining system.
  • TANAKA Fumiki, IGARI Shinji, ONOSATO Masahiko
    The proceedings of the JSME annual meeting 一般社団法人日本機械学会 2009 331 - 332 2009 
    This paper proposes CAD data integrated machining system for realizing advanced machining which is feature-based and machine independent. STEP-NC remedies the shortcomings of current NC data and is basic data structure for realizing the advanced machining system. To realize STEP'NC based manufacturing systems, it is necessary to perform machining feature extraction and data complementing of machine specific parameters. In this paper, a method to assist manufacturing feature extraction is proposed, which extracted an area of a product corresponding to a manufacturing feature based on the cutting tool approach direction. For data complementing of machine specific parameters, value setting method is also proposed. This method sets a default value of optional attribute using EXPRESS-X.
  • Fumiki Tanaka, Masahiko Onosato, Takeshi Kishinami, Kiyoshi Akama, Makoto Yamada, Tsukasa Kondo, Satoshi Mistui
    MANUFACTURING SYSTEMS AND TECHNOLOGIES FOR THE NEW FRONTIER 2007 (Web) 177 - + 2008 [Not refereed][Not invited]
     
    To realize the articulate link between design and manufacturing, it is necessary to realize interoperable digital tools which represent the semantics of information independently of any implementations. It is necessary to assure that the quality of the shape information overcomes the limitation of interoperability of the shape information. In manufacturing, the interoperable CNC machining systems can be characterized as being capable of 1) seamless information flow; 2) feature based machining; etc. In this research, modeling and implementation of the Digital Semantic Model for 5-axis machining that fulfils the above requirements is proposed.
  • Takuya Matsuda, Fumiki Tanaka, Masahiko Onosato, Hiroaki Date
    JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING 一般社団法人 日本機械学会 2 (4) 597 - 608 1881-3054 2008 [Not refereed][Not invited]
     
    In a machining system using computer numerical control (CNC) machine tools, detailed models of machining information are necessary to simulate detailed machining and to control the complex motion of machine tools. However, existing machining information models lack the necessary information and are described in their own formats. Consequently, many models which include the same information exist. Moreover various simulations for a virtual machining system and adaptive control for a real machining system are inacculate. To solve these problems, a digital machining information (DMI) model to support a real-virtual machining system is proposed in this study.
  • Analysis of NC Data Based On CNC Data Model For Retaining Machining Information
    Proc. ASME International Symposium on Flexible Automation 2008(CD-ROM) JL026  2008 [Not refereed][Not invited]
  • Masahiko Onosato, Fumiki Tanaka, Hiroaki Date, Ryoji Kawagishi
    MANUFACTURING SYSTEMS AND TECHNOLOGIES FOR THE NEW FRONTIER 107 - 110 2008 [Not refereed][Not invited]
     
    Manufacturing in the digital age is deeply dependent on the information and communication technologies (ICT) and the manufacturing activities have been changing from direct operations by human operators to digital data exchanges by computers. It is fairly difficult for engineers and workers to understand the entire image of digital manufacturing activities. A concept of complex manufacturing space (CMS) introduces the duality of the physical world and the information world to manufacturing design, planning, control, and other activities. This paper explains the complex manufacturing space concept and some technical challenges for its implementation.
  • 小野里 雅彦, 増田 寿信, 毛利 健二, 伊達 宏昭, 田中 文基
    図学研究 日本図学会 42 (1) 45 - 48 0387-5512 2008 
    大地震等で倒壊した家屋から被災者を救助するためのレスキュー機器の研究開発が重要な課題となっている.しかしながら救助の場であるがれきに対する学術的知見が不足しており, がれきに対する研究が求められている.本研究グループでは工学的アプローチのひとつとして, がれきの形態解析をこれまで行っており, 本報告では, 物理シミュレータを用いて形成した模擬的ながれきのモデルを対象に, がれきの定量的なパラメータの分類と, がれきの形成する内部空間の構造を離散ボロノイ分割に基づき分析する手法の提案を行っている.これによりがれきの内部自由空間は分散する局所最大空球とそれらを結ぶネットワークにより特徴付けられることを示した.こうした空間の構造分析手法によりレスキューロボット等の開発に必要となる内部自由空間に関する特徴量を得ることが可能となった.
  • Yoshihito Kikuchi, Hiroyuki Hiraoka, Akihiko Ohtaka, Fumiki Tanaka, Kazuya G. Kobayashi, Atsuto Soma
    27TH COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, VOL 2, PTS A AND B 2007 47 - 55 2008 [Refereed][Not invited]
     
    Inappropriate data problems due to mismatching of product data quality are always possible in data communication and sharing. In this problem, the data is evaluated as valid within the original system and its initial usage, but problem brake out during the reuse phase of the same data. This delayed problem requires data repair or rework operation in the subsequent manufacturing process and results in significant economic loss. As cause, current product data is a dumb model and its quality is not guaranteed. The receiver system cannot identify whether the data has sufficient quality for reuse or not. Furthermore, manufacture's advance notice of their request for data quality is impossible. This paper proposes an establishment of PDQ (product data quality) information for communication of data quality that can be used independently or in combination with product data. The PDQ information model presents qualitative measurements according to given criteria, and the measured portion of product data. Based on PDQ model, a PDQ-S (PDQ for shape data) model has been developed. For PDQ-S, industrial guidelines about shape data communication are systematically categorized as the baseline of guarantee. The PDQ model is intended to be independent and neutral from calculation algorithm of measurement. As the method of development, STEP (ISO 10303: Standard for the exchange of product model data) architecture was adopted and the PDQ model was developed as a resource of STEP standards. We show an example about combination of shape data and concerned quality guarantying data.
  • INOUYE Takashi, KISHINAMI Takeshi, TANAKA Fumiki
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 73 (4) 487 - 491 0912-0289 2007 [Not refereed][Not invited]
     
    Computer aided process planning has been expected to accomplish integration between design and its downstream, and has a role of a bridge between CAD and CAM applications. Since manufacturing feature recognized from CAD database is applied to communicate information in computer aided process planning, it becomes a key issue how to manage manufacturing features to achieve optimum process planning with minimum human intervention. For this purpose, an idea of a feature dependency of manufacturing feature based on a base plane is proposed. The feature dependency is a collection of manufacturing features based on the base plane in a hierarchy relationship. The base plane is a planar face which corresponds to a machine tool axis direction. Using this base plane and its feature dependency, each feature can be assigned to each specified process immediately and correctly, and all the successive process planning work is completed effectively. The systematic methodology for process planning, including unrecognized features, using feature dependency based on a base plane is presented, and the possibility of implementation applying this approach is verified by developed prototype CAPP system.
  • Development of a Digital Machining Information Model to Support a Real-Virtual Machining System
    Proc. the 4th International Conference on Leading Edge Manufacturing in 21st Century (CD-ROM) 825 - 830 2007 [Not refereed][Not invited]
  • INOUYE Takashi, KISHINAMI Takeshi, TANAKA Fumiki
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 73 (6) 705 - 710 0912-0289 2007 [Not refereed][Not invited]
     
    Manufacturing feature is key information to achieve data sharing between CAD and the following manufacturing process. It is well known that the data of the feature is first generated by feature recognition from CAD geometry, and then applied to the process planning. Our study has examined the process planning based on Feature Dependency and have demonstrated the way to create and implement the feature dependency. First report demonstrates that representing the feature dependency which contains feature hierarchy when applying the data to the process planning leads the following process to be more efficient and accurate. In the second report, features including division and/or unification, i.e. dynamic feature, are discussed. Previous two papers focus on the features which have explicit relationship with geometry, i.e. explicit feature, are discussed. In this paper, feature dependency that has no explicit relationship with geometry, i.e. implicit feature, such as a thread, surface finish, removal thickness and finishing allowance are also discussed and the method of integrating explicit features and implicit features into one feature dependency is introduced.
  • INOUYE Takashi, KISHINAMI Takeshi, TANAKA Fumiki
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 73 (5) 588 - 592 0912-0289 2007 [Not refereed][Not invited]
     
    Since a manufacturing feature, in computer aided process planning (CAPP), is the medium of information communication in the data sharing between design and manufacturing, i.e. CAD and CAM, it has an important role to complete optimum process planning in its correct capture and communication capability. For the purpose of improving this communication, an approach of using a feature dependency of manufacturing feature based on a base plane was proposed and verified for smooth integration between CAD, CAPP and CAM in the previous paper. According to successive trial and usage by real machining parts in some industries, it becomes clear that a certain feature such as a chamfer element causes effects of annoyance for other feature recognition, and multiple feature definition for a single feature is required under interactions by the others. To solve these requirements for applying more sophisticated parts, filtering method for undesired features to complete correct feature recognition and multiple feature definitions for features in interactions are proposed in this paper. Finally the representation schema of feature dependency including these results is proposed, and the approach is verified by a developed prototype SCAPP system.
  • YAMADA Makoto, TANAKA Fumiki, KONDO Tsukasa, KISHINAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 73 (5) 563 - 567 0912-0289 2007 [Not refereed][Not invited]
     
    Nowadays most of die and mold machining are manufactured by three dimensional controlled machining using ball end mill. Using this manufacturing method, we can obtain complex shapes by point contact machining between cutting tool and workpiece. To shorten set-up time and machining time, we have proposed 3+2 axis controlled machining method which the mold and dies are machined by indexing tilted tool axis on 5-axis machining center. In the proposed machining process, high speed machining is executed on each tilted tool axis. In this machining process, the list of indexing angle should be determined automatically, because the shape of the die and mold is very complex to determine the angle by an operator. Therefore, the main objective of this research is automatic determination method of the list of indexing angle for machining the die and mold. We have proposed, in the first and second reports, the calculation method of optimum indexing angle candidates for required machining surfaces using normal vectors of the surfaces and effective cutting edge shapes. And we have shown the procedure of deriving of optimum indexing angle and machinable area based on inverse offset method with state flag. However, we need the effective tilting angle range which we get the stable machining condition in tilted tool axis ball end milling. For this reason, in this research, we propose the machining experiment method using dynamic force dynamometer on 5-axis machining center to analyze the machining properties using tilted tool axis ball end cutting tool. And, we show the machining evaluation diagram from which the results of machining experiments property by tilted tool axis ball end cutting tool.
  • ONOSATO Masahiko, TANAKA Fumiki, DATE Hiroaki
    Proceedings of JSPE Semestrial Meeting 一般社団法人日本機械学会 2007 949 - 950 2007 
    Manufacturing in the digital age is deeply dependent on the information and communication technologies (ICT) and the manufacturing activities have been changing from direct operations by human operators to digital data exchanges by computers. It is fairly difficult for engineers and workers to understand the entire image of digital manufacturing activities in an intuitive way. The author proposes a concept of a complex manufacturing space with which various concepts in both real and virtual manufacturing are associated in an integrated conceptual scheme. The complex manufacturing space is an analogy of complex numbers in mathematics and it introduces the duality of the physical world and the information world to manufacturing design, planning, control, and other activities. This paper introduces the complex manufacturing concept and some technical challenges for its implementation.
  • F Tanaka, T Kishinami
    COMPUTERS IN INDUSTRY 57 (3) 245 - 260 0166-3615 2006/04 [Not refereed][Not invited]
     
    Collaborative e-engineering requires different digital tools in different phases of the product development process. However, an interoperability error makes product model data unusable when applying digital tools. Movement toward concurrent and collaborative e-engineering drives the need for assuring the quality of the communicated product model data. In this paper, a quality diagnosis method of the shape data of a neutral file based on a product model including curved surface described in formal language is proposed. The proposed method is based on the standard for the exchange of product data (STEP) technology using EXPRESS-X, which is the mapping language between STEP model data. In order to help create the data quality diagnostics criteria for geometric errors easily, the classification of the quality criteria based on their geometric algorithms is also proposed. The certification data model of the product data is proposed to avoid a tedious checking procedure in the receiver system. Some of the quality criteria, which were published by the Strategic Automotive Product Data Standards Industry Group (SASIG), are rewritten in formal language and applied to the data sets including the error set provided by the Japan Autornotive Manufacturers Association (JAMA) to demonstrate the effectiveness of the proposed diagnostics method. The approach based on the formal language is extensible for any phase of the product development process by rewriting the criteria. Not all SASIG criteria have actually been implemented. Future work is to rewrite all SASIG-PDQ criteria into EXPRESS-X schemas. (c) 2006 Elsevier B.V. All rights reserved.
  • Machining Feature-Driven 5-Axis CNC Machine Tools
    Proceedings of the 11th International Conference on Precision Engineering 169 - 174 2006 [Not refereed][Not invited]
  • Machined Surface Analysis for 5-axis Machine Tools
    Proceedings of the 11th International Conference on Precision Engineering 323 - 324 2006 [Not refereed][Not invited]
  • Fumiki Tanaka, Masahiko Onosato, Takeshi Kishinami, Kiyoshi Akama, Makoto Yamada, Tsukasa Kondo, Satoshi Mistui
    2006 SICE-ICASE INTERNATIONAL JOINT CONFERENCE, VOLS 1-13 5145 - + 2006 [Not refereed][Not invited]
     
    In. order to realize the articulate link between design and manufacturing and a traceable manufacturing system, it is necessary to represent the semantics of information independently of any implementations. Moreover, the quality of data that represent information should be ensured during the product life cycle. A significant amount of research for machining process planning and machining feature extraction has been carried out to help realize an integrated CAD/CAPP/CAM system. However, all data are not used throughout product development processes. The Standard for the Exchange of Product model data (STEP) has also emerged as a viable method for product model data exchange among design activities. However, a consistent application for integrating design, process planning and machining for mechanical components based on STEP/AP set has not completely been developed thus far. In this research, the Digital Semantic Model that fulfills the above requirements is proposed. In this paper, modeling and implementation of Digital Semantic Model for 5-axis machining is reported.
  • Hiroshi Yamada, Fumiki Tanaka, Masahiko Onosato
    2006 SICE-ICASE International Joint Conference 4986 - 4991 2006 [Not refereed][Not invited]
     
    Retaining technical information is an important element for performing high quality machining. However, actual NC data (ISO 6983) contain implicit technical information which reflects the skilled worker's knowledge. In this research, to obtain technical information, NC data are analyzed based on a next-generation CNC control language (ISO 14649) which contains technical information explicitly. In this paper, we demonstrate how ISO 6983 NC data generated by CAM software are applied to the test implemented system, and how valid technical information is obtained. © 2006 ICASE.
  • Developing software platform for Checking Quality of shape data of STEP product model for CAD/CAM environment
    Proceedings of the 16th International Conference on Flexible Automation and Intelligent Manufacturing 823 - 830 2006 [Not refereed][Not invited]
  • Hiroshi Yamada, Fumiki Tanaka, Masahiko Onosato
    IFIP International Federation for Information Processing 207 109 - 114 1571-5736 2006 [Not refereed][Not invited]
     
    Retaining technical information is an important element for performing high quality machining. However, actual NC data (ISO 6983) contain implicit technical information which reflect the skilled worker's knowledge. In this research, for obtaining technical information, NC data are analyzed based on a next-generation CNC control language (ISO 14649) which contains technical information explicitly. In this paper, we demonstrate how ISO 6983 NC data generated by CAM software are applied to the test implemented system. © 2006 International Federation for Information Processing.
  • Yamazaki Tomoyuki, Onosato Masahiko, Tanaka Fumiki
    Progress of Machining Technology, Proceedings 539 - 542 2006 [Refereed][Not invited]
     
    A new method for non-contact shape measurement of a specular surface like metallic surface, is proposed. The principle of the proposed method is the simultaneous measurement of 3D coordinates and normal vector on a specular surface using double laser spot images. Position and direction of the reflected beam are detected by the projected spot image on a l-axis movable screen. Then, the position and the normal vector of the reflection point on the surface are determined based on the law of ray reflection. Both position and normal vector are measured simultaneously. The system, based on the proposed method, contains only standard devices: a laser, a CCD camera and a screen. An experimental setup has been created to check the validity of the proposed method. To test the apparatus we measured some primitive shapes. The experimental results are shown and accuracy in addition to the properties of the proposed method, are evaluated.
  • YAMADA Makoto, TANAKA Fumiki, KONDO Tsukasa, KISHINAMI Takeshi, KOHMURA Akio
    Journal of the Japan Society for Precision Engineering. Supplement. Contributed papers 公益社団法人精密工学会 71 (12) 1613 - 1617 1348-8724 2005 [Not refereed][Not invited]
     
    Nowadays most of die and mold makers use High Speed Cutting or Machining in cavity and core manufacturing. However, finishing processes for injection molding molds and die casting dies are done by EDM because these applications have many thin and deep cavities to be machined. Otherwise, the long solid carbide milling cutters are necessary for machining these molds and dies. To save set-up time and avoid using the long solid carbide milling cutters, we have proposed 3+2-axis high speed machining on a 5-axis machining center. The 3+2-axis machining is the sequence of machining by indexing titled tool axis on 5-axis machining center. In the 3+2-axis machining process, the sequence of indexing angles must be determined automatically, because the shape of the die and mold is very complex to determine the indexing angles by an operator. Therefore, the main objective of this research is to propose an automatic determination method of the sequence of indexing angles for machining the die and mold. We have proposed, in the first report, the calculation method of optimum indexing angle candidates for given required machining surfaces using normal vectors of the surface and effective cutting edge shape, and the machinable area derivation method of calculated indexing angle based on inverse offset method with state flag. In this report, we extend the proposed calculation method to determine the sequence of indexing angles for a complex machining shape. Firstly, in order to represent machinable information of facet, a new facet data structure is proposed. Secondary, the precise representation of machinable area on the offset surface is proposed. Finally we illustrate an example to demonstrate the effectiveness of the proposed method.
  • Data transformation from ISO6983 data to ISO14649 to obtain machining knowledge using EXPRESS-X
    Proceedings of the 3rd International Conference on Leading Edge Manufacturing in 21st Century 415 - 421 2005 [Not refereed][Not invited]
  • Data transformation from ISO6983 data to ISO14649 to obtain machining knowledge using EXPRESS-X
    Proceedings of the ProSTEP Science Days 2005 188 - 197 2005 [Not refereed][Not invited]
  • TANAKA Fumiki, YAMADA Horishi, ONOSATO Masahiko, KISHINAMI Takeshi
    Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 一般社団法人 日本機械学会 2005 (0) 415 - 420 2005 [Not refereed][Not invited]
     
    Technical information, such as machining features, type of machining operations and machining conditions, should be represented explicitly and integrated into one data structure with some relation between the information in order to manage, modify, and verify NC data and avoid human error. However, traditional NC data (ISO 6983) contains such kind of technical information implicitly. In this research, technical information is extracted from NC code, and the extracted technical information is transformed into a next-generation CNC control language (ISO14649) which contains the technical information, and the ISO 14649 data are stored in XML.
  • Fumiki Tanaka, Yousuke Nogaya, Takeshi Kishinami
    TOOLS AND METHODS OF COMPETITIVE ENGINEERING Vols 1 and 2 945 - 952 2004 [Not refereed][Not invited]
     
    The movement toward concurrent and collaborative e-engineering drives the need for assuring the communicated product model data quality. A classification for model data quality errors has been developed by the Japan Automotive Manufacturers Association (JAMA), the Japan Auto Parts Industries Association (JAPIA), and the Strategic Automotive Product Data Standards Industry Group (SASIG). However, these criteria are described in natural language (Japanese and English), and a certain amount of ambiguity exists in the measurement methods of the product data quality. To solve this problem, the criteria should be described in formal language or programming language. In this paper, we propose a diagnosis method of product model data quality based on STEP technology using EXPRESS-X which is the mapping language between STEP model data. The certification data is described in XML and linked to the original product data. We also propose the certification data model of the product data. We show some examples to demonstrate the effectiveness of the proposed diagnostics method.
  • Software System for Sculpture Surface Machining Based on 3+2 Axis Control High Speed Machining on a 5-axis Machining Center
    Proc. of 2004 Japan-USA Symposium on Flexible Automation JL-006  2004 [Not refereed][Not invited]
  • Hitoshi TOKUNAGA, Takaaki OKANO, Norio MATSUKI, Fumiki TANAKA, Takeshi KISHINAMI
    Proceedings of the ASME 2004 Design Engineering Technical Conferences & Computers and Information in Engineering Conference 2004 [Refereed][Not invited]
  • KISHINAMI Takeshi, TANAKA Fumiki, HORIUCHI Hiroshi
    The proceedings of the JSME annual meeting 一般社団法人日本機械学会 2004 57 - 58 2004 
    The technical information, such as Machining feature, type of machining operation and machining condition, is necessary for operator to use NC code in the shop floor. However, NC code has no relation each other in explicit form. Then, it is difficult to manage, modify, and verify NC data. Therefore this is the cause of the human error. In this research, the technical information is extracted from NC code, and the technical information is transformed into a next-generation CNC control language(ISO 14649) which contains the technical information. In this report, Workingstep is constructed from Machining feature, Machining strategy and Approach-Retract strategy which are extracted from NC code based on Form-shaping function.
  • YAMADA Makoto, TANAKA Fumiki, KONDO Tsukasa, KISHINAMI Takeshi, KOHMURA Akio
    Journal of the Japan Society for Precision Engineering, Contributed Papers 公益社団法人 精密工学会 70 (1) 65 - 69 1348-8724 2004 
    Today nearly all die and mold makers use High Speed Cutting or Machining in cavity and core manufacturing. However, finishing processes for injection molding molds and die casting dies are done by EDM because these applications have many thin and deep cavities to be machined. Otherwise, the long solid carbide milling cutters are necessary for machining these molds and dies. To save set-up time and machining time, it is desire to machine by High Speed Cutting or Machining in such machining portions. To solve this problem, mold and die machining by indexing tilted tool axis on 5-axis machining center is proposed in this paper. In the proposed machining process, High Speed Machining is executed on each tilted tool axis. In this machining process, the list of indexing angle should be determined automatically, because the shape of the die and mold is very complex to determine the angle by an operator. Therefore, the main objective of this research is automatic determination method of the list of indexing angle for machining the die and mold. Firstly, we propose the calculation method of optimum indexing angle for required machining surfaces using normal vectors of the surfaces and cutting edge shapes similar to the Gaussian Sphere method. Secondary, we propose the machinable area evaluation method of calculated indexing angle based on inverse offset method with state flag. Finally, we illustrate an example to demonstrate the effectiveness of the proposed methods.
  • High Efficiency Sculpture Surface Machining by Automatically Indexing Tilted Tool Axis on 5-axis Machining Center in Mold and Die Machining
    Proceedings of the 13th International Conference on Flexible Automation & Intelligent Manufacturing 504 - 512 2003 [Not refereed][Not invited]
  • TOKUNAGA Hitoshi, MATSUKI Norio, IMAMURA Satoshi, TANAKA Fumiki, KISHINAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 69 (10) 1401 - 1405 0912-0289 2003 [Not refereed][Not invited]
     
    This paper presents a new method for adapting the existing manufacturing system for a requirement change, such as the change of a required motion task, by modifying its kinematic structure from the viewpoint of the degrees of freedom of the end effecter of the mechanism. In a previous report, the authors formulated the kinematic structure and motion task using Lie algebra. In this report, using these representations and their inclusion relations, the authors propose a method for evaluating the reusability of a kinematic structure for a newly specified motion task, and then propose a method for reconfiguring the mechanism in Lie algebra according to the result of the reusability evaluation. Finally, in order to evaluate the usefulness of the proposed method, it is applied to a kinematic design example of a mechanism.
  • Tanaka F., Takinami M., Kishinami T.
    Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 一般社団法人日本機械学会 2003 747 - 752 2003 [Not refereed][Not invited]
     
    In machining process planning, delta volume, which is derived by subtracting required shapes from raw material, is decomposed into some elements that are assigned to specific machining features and related to the specific machining processes. Therefore, the removed material of the raw stock, the removal volume, is the key element for deriving the previous shape of raw stock and determining the machining sequence in the machining process planning. It is thought that the removal volume contains information about the shape of the removed material and the machining process. This paper proposes a removal volume model which has the shape of the removed material and the machining process for a machining process plan based on a working tool model derived from the Form-Shaping Function mathematical model of machining operation.
  • Tanaka F, Takinami M, Kishinami T
    Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 一般社団法人日本機械学会 2003 (0) 747 - 752 2003 [Not refereed][Not invited]
     
    In machining process planning, delta volume, which is derived by subtracting required shapes from raw material, is decomposed into some elements that are assigned to specific machining features and related to the specific machining processes. Therefore, the removed material of the raw stock, the removal volume, is the key element for deriving the previous shape of raw stock and determining the machining sequence in the machining process planning. It is thought that the removal volume contains information about the shape of the removed material and the machining process. This paper proposes ...
  • EXPRESS/XML based Data Modeling for Tool Data Management
    Proceedings of the 12th International Conference on Flexible Automation & Intelligent Manufacturing 279 - 288 2002 [Not refereed][Not invited]
  • Reconfiguration of Kinematic Structure for Changing Motion Requirement Based on Reusability Evaluation in Lie algebra
    Proc. ASME 2002 Design Engineering Technical Conferences [1/1(CD-ROM)]  2002 [Not refereed][Not invited]
  • A Hierarchical Machining Process Plan and Required Data Model
    Proceedings of 2002 Japan-USA Symposium on Flexible Automation 511 - 516 2002 [Not refereed][Not invited]
  • TOKUNAGA Hitoshi, MATSUKI Norio, IMAMURA Satoshi, TANAKA Fumiki, KISHINAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 68 (4) 608 - 613 0912-0289 2002 [Not refereed][Not invited]
     
    This paper presents a new method for kinematic synthesis of mechanisms from motion task specifications in a conceptual design. The motion task is classified into continuous path or positioning task. The former is the task that moves a mechanical part along a required path, and the latter is the task that puts the part in a particular position or orientation. The authors formulate them mathematically using Lie algebra and propose a method for generating an initial solution of the mechanism that can perform the specified motion tasks. From this solution, the constraint reduction procedure can reduce the redundant constraints such as joints to derive a minimum equivalent mechanism. By applying this mechanism to the synthesis procedure proposed in our previous report, a number of equivalent mechanisms can be derived. Finally, in order to evaluate the usefulness of the proposed method, it is applied to an example of kinematic design of mechanism.
  • TANAKA Fumiki, TOYAMA Naosuke, KISHINAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 68 (5) 665 - 670 0912-0289 2002 [Not refereed][Not invited]
     
    This paper deals with geometric aspect of machined shapes and a machining process, which correspond directly to the machining process model. In order to make robust assignment rules of machining process, the working tool and operating step were introduced in the previous report. Moreover, to capture the essential information, the dimensions of operating step and working tool are also proposed as the parametric representation of them. However, it is necessary to consider the geometric representation of operating step and working tool, because the geometric information is used in feature extraction process from product model, and essential information of process plan are a tool shape and a tool path. In this paper, geometric model of working tool and operating step in three axis milling machine is discussed based on form shaping function. 16 classes of working tool are also proposed for the process planning.
  • MITSUI Satoshi, TANAKA Fumiki, KISHINAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 68 (10) 1321 - 1325 0912-0289 2002 [Not refereed][Not invited]
     
    To support a cutting tool management system in distributed manufacturing industries, a cutting tool database is necessary to provide required information for the management system. This paper deals with the methodology to construct a cutting tool database and to manage cutting tool information for distributed cutting tool management system using internet. In the past study, by introducing STEP technology and using EXPRESS and EXPRESS-G, we designed an information model of cutting tools, thereby representing models of such basic tool database as parts structure, assembly, nominal size and real size. We proposed an EXPRESS early binding XML for capturing the nature of tool data model, and for generating the serialization format of an EXPRESS data model, and evaluating its usefulness. The conversion of translators to any database systems is done according to mapping model represented by EXPRESS-X using to describe the conditions for conversion.
  • F Tanaka, N Toyama, T Kishinami
    INITIATIVES OF PRECISION ENGINEERING AT THE BEGINNING OF A MILLENNIUM 837 - 841 2001 [Not refereed][Not invited]
     
    This paper deals with a model of process planning based on an inverse form-shaping function. A machining process model, defined as the form-shaping function, has been proposed and analyzed by many researchers. If the process planning is considered as an inverse process of the machining process, the process planning model can be easily established by inverting the form-shaping function. To accomplish this, the parametric form-shaping function as the machining process model and inverse form-shaping function as machining process planning model are proposed.
  • F Tanaka, M Murai, T Kishinami, H Tokunaga
    PROCEEDINGS OF THE 2001 IEEE INTERNATIONAL SYMPOSIUM ON ASSEMBLY AND TASK PLANNING (ISATP2001) 399 - 404 2001 [Not refereed][Not invited]
     
    In assembly modeling, it is necessary to capture the relative positions of components in the assembly. Many problems are related to constraint representation and its manipulation, such as constraint reduction. This paper formulates the constraints as groups of rigid body transformations and proposes a constraint reduction procedure based on a Lie algebra. This approach is then applied to the constraint representation and reduction in an assembly model. The reduced kinematic model of assembly can be derived by the proposed method for kinematic analysis.
  • TANAKA Fumiki, TOYAMA Naosuke, KISHINAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 67 (12) 1956 - 1960 0912-0289 2001 [Not refereed][Not invited]
     
    This paper deals with process planning system based on machining process model. So far, the taxonomy of machining features, for example, hole, pocket, slot, etc. are shape based classsifications and it is difficult to assign the machining process information without competition of assignment rule. To solve this problem, the machining process modeling is needed for mapping between machined shape element and machining process. However, only tool behaviors are derived from giving the tool and the cutting motion to the machine tool. Therefore, the behavior model of cutting tool, working tool, to connect the machining operation and machined shapes are introduced. The working tool consists of the swept macro tool, the envelope of the swept macro tool, and the working edge. The feature model of the machining process, operating step, is also proposed from the viewpoint of a macro cutting tool, controled table motion, and enveloping constraints. To capture the essential information, the dimension of operating step and working tool are also proposed as the parameric representation of them.
  • Hitoshi Tokunaga, Kenichiro Itakura, Fumiki Tanaka, Takeshi Kishinami
    IFIP Advances in Information and Communication Technology 75 179 - 190 1868-4238 2001 [Refereed][Not invited]
     
    In assembly modelling, it is necessary to capture the relative positions of components in the assembly. Many such problems concern constraint representation and its manipulation such as constraint reduction. This paper formulates the constraints as groups of rigid body transformations and proposes a constraint reduction procedure, based on Lie algebra. Then, this approach is applied to the constraint representation and reduction in an assembly model. © 2001 Springer Science+Business Media New York.
  • H Tokunaga, K Itakura, F Tanaka, T Kishinami
    GEOMETRIC MODELLING 75 179 - 190 1571-5736 2001 [Refereed][Not invited]
     
    In assembly modelling, it is necessary to capture the relative positions of components in the assembly, Many such problems concern constraint representation and its manipulation such as constraint reduction. This paper formulates the constraints as groups of rigid body transformations and proposes a constraint reduction procedure, based on Lie algebra, Then, this approach is applied to the constraint representation and reduction in an assembly model.
  • F Tanaka, D Sakaguchi, S Kanai, T Kishinami, S Saitoh
    IGARSS 2001: SCANNING THE PRESENT AND RESOLVING THE FUTURE, VOLS 1-7, PROCEEDINGS 213 - 215 2001 [Not refereed][Not invited]
     
    This paper describes the XML/Web based infrastructure to support sharing geospatial data and an ecological model for simulation of eco-resource.
  • T Kishinami, F Tanaka, Y Sato
    INTELLIGENT AUTONOMOUS SYSTEMS 6 387 - 394 2000 [Not refereed][Not invited]
     
    In this paper, XML-based high level NC data modeling for Web/XML based manufacturing data management system is proposed. The proposed XML-based high level NC data enable the sharing of acquisition and organization of data in a manufacturing process with other manufacturing sites.
  • Thermal Distortion Analysis During Photopolymerization in Stereolithography
    Proc. of The Eighth International Conference on Rapid Prototyping 87 - 92 2000 [Not refereed][Not invited]
  • Feature Models for Machining Operation and Machined Shapes for End Milling
    Proc. 2000 Japan-USA Symposium on Flexible Automation 2000JUSFA-13031  2000 [Not refereed][Not invited]
  • Feature Models for Machining Operation and Machined Shapes for Single Cutting Edge Machining
    Proc. 2000 Japan-USA Symposium on Flexible Automation 2000JUSFA-13040  2000 [Not refereed][Not invited]
  • SASAKI Toyoharu, KURODA Yohko, TANAKA Fumiki, KISHINAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 66 (4) 572 - 577 0912-0289 2000 [Not refereed][Not invited]
     
    Determination of tolerances is very important during product manufacturing in order to maintain low cost while achieving a consistent level of product performance. The purpose of this study was the improvement of productivity of optical products like as SLR lens. Therefor this study had proposed the "Virtual PT System" concept as a method to realize the suitable tolerancing for optical products and realized this system. According to this concept, this report proposes the new product model of SLR lens to evaluate the optical performance in real product condition. The proposed SLR lens model can represent uniquely the position and orientation of all parts as relationship of coordinate transformation. And also, this model can represent the mechanical structure with both manufacturing error and assembling error by same manner. Using this SLR lens model, the designer can easily obtain the both lens surfaces decentering amount and optical performance on real product condition precisely.
  • YAMADA Makoto, TANAKA Fumiki, KISHINAMI Takeshi
    The proceedings of the JSME annual meeting 一般社団法人日本機械学会 2000 547 - 548 2000 
    The purpose of this research is to machine a shape on the object having curved surface. The shape, position and attitude of the object are recognized by measurement on 5-axis controlled machining centre (MC), with that we can machine on the curved surface without detaching the object from machine tools. In this report we would like to show the process to derive the geometry data of curved surface by using a laser displacement instrument which is set on spindle nose of 5-axis controlled MC, and to examine shape machining to curved surface on 5-axis controlled MC.
  • Implementation of STEP product models with mapping EXPRESS to Java
    Proceedings of the PDT Europe 1999 81 - 88 1999 [Not refereed][Not invited]
  • TANAKA F.
    Global Consistency of Tolerances Kluwer Academic Publishers 293 - 302 1999 [Not refereed][Not invited]
  • Hiroyuki Narahara, Fumiki Tanaka, Takeshi Kishinami, Satoru Igarashi, Katsumasa Saito
    RAPID PROTOTYPING JOURNAL 5 (3) 120 - 128 1355-2546 1999 [Not refereed][Not invited]
     
    In the industrial use of stereolithography, precision is always a problem. The basic phenomenon of solidification shrinkage has not been sufficiently investigated. This study aims at clarifying the initial linear shrinkage of cured resin in a minute volume. Experimental equipment has been developed which measures the time history of the single strand in situ in a stereo I ithography machine. An analysis model of the time history of a minute volume linear shrinkage was shown using the measured shrinkage of a cured line segment. The relation between the time history of the linear shrinkage and temperature was measured and the shrinkage in the minute volume after irradiation was found to result due to temperature variation. Deformation and linear shrinkage were measured with two scanning orders to control the thermal distribution in layer forming. The effects of thermal distribution were also observed in one layer forming.
  • A Development of Statistical Tolerancing System for Optical Products
    Global Consistency of Tolerances 345 - 354 1999 [Not refereed][Not invited]
  • SASAKI Toyoharu, SHINKAI Masahiko, HIGASHIYAMA Kohichiro, TANAKA Fumiki, KISHINAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 65 (2) 279 - 284 0912-0289 1999 [Not refereed][Not invited]
     
    Determination of tolerances is very important during product manufacturing in order to maintain low cost while achieving a consistent level of product performance. However, with optical products, precise, quantitative prediction of tolerance sensitivities, optical performance, and productivity in a mass production environment have been very difficult in the design stage The purpose of this study was the development of a statistical tolerancing system for optical products based on computer simulations (called Virtual PT System). The development of the mass-production simulation system was already reported in the first paper. As the second step of this study; the development of the complex sensitivity analysis system, which is based on the stepwise multiple regression method are reported in this paper. This system analyzes the error data and the MTF data output by mass-production simulation system, and output analysis result of the statistical complex tolerance sensitivity. Furthermore, this paper reports the effect the sensitivity analysis result confirmed by the mass-production simulation.
  • TOKUNAGA Hitoshi, ITAKURA Kenichiro, TANAKA Fumiki, KISHINAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 65 (12) 1729 - 1734 0912-0289 1999 [Not refereed][Not invited]
     
    In assembly modeling, it is necessary to capture the relative positions of components in the assembly. Many such problems concern constraint representation and its manipulation such as constraint reduction. This paper makes theoretically clear the constraint representation and reduction in the assembly model as follows : first, constraints are defined as groups of rigid body transformations based on Lie algebra. Second, constraint reduction procedure is proposed based on Lie algebra. Finally, this approach is applied to the constraint representation and reduction in an assembly model.
  • SASAKI Toyoharu, SHINKAI Masahiko, HIGASHIYAMA Kohichiro, TANAKA Fumiki, KISHINAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 64 (7) 1090 - 1095 0912-0289 1998/07/05 
    Tolerance is a very important parameter for all products to keep stable the product performance with low manufacturing cost. However in optical products, it is very difficult to predict the productivity , optical performance and complex sensitivity of tolerance for mass-production. To solve the above problems and to increase efficiency of manufacturing time and to reduce cost, This study develops the statistical tolerancing system and enables the quantitative analysis of optical performance with productivity before manufacturing. In this paper, we propose a concept of Virtual PT System (PT : Production Try) for optical products such as SLR Lenses. And we report a development of the mass product simulation system based on Monte-Carlo methods according to the proposed concept. Furthermore, we report reliability results based on simulations.
  • F Tanaka, T Kishinami
    JOURNAL OF MATERIALS PROCESSING TECHNOLOGY 76 (1-3) 109 - 114 0924-0136 1998/04 [Not refereed][Not invited]
     
    The typical approach of process planning is to consider the removal volume as a collection of machining features and to CARRY OUT the planning on a feature basis. The objective of this paper is to characterize the machined shape, reflecting characteristics of the machining process such as the cutting edge and the machine tool motion, for linking between the machining features and machining operation. We propose a model of the machining process based on the form-shaping function proposed by Reshetov and Portman and identify the characteristic parameters of the machining process. We can also classify the characteristics of the machined surface from the viewpoint of the removal volume, the machined surface and the contacting shape between the required surface and the cutting edge during a cutting motion. (C) 1998 Elsevier Science S.A. All rights reserved.
  • F Tanaka, T Kishinami
    1998 JAPAN-U.S.A. SYMPOSIUM ON FLEXIBLE AUTOMATION - PROCEEDINGS, VOLS I AND II 799 - 806 1998 [Not refereed][Not invited]
     
    It is recognized that manufactuing information data shearing technology plays a very important role for global manufacturing activity. In order to establish manufacturing information data sharing, we propose "Manufactuing Resource modeling" at second phase of manufactuing information data shearing technology. In this research, the modeling terget of manufacturing resource is machine tool. First, we compare Portman's Form-Shaping System notation, D-H symbolic notation, and S-U symbolic notation for their notations of rigid link mechanisms for machine tools. Also we propose the representation of kinematic models of machine tools based on ISO TC184/SC4 STEP kinematic models.
  • F Tanaka, T Kishinami
    GLOBALIZATION OF MANUFACTURING IN THE DIGITAL COMMUNICATIONS ERA OF THE 21ST CENTURY: INNOVATION, AGILITY, AND THE VIRTUAL ENTERPRISE 163 - 174 1998 [Not refereed][Not invited]
     
    In this paper, we propose feature models of a machining operation and machined surface, which correspond directly to the machining process model. The feature model of the machining operation is proposed from the viewpoint of the dimension of a macro cutting tool, the dimension of feed motion, and the number of enveloping constraints. The machining feature is also proposed from the viewpoint of the removal volume (tool swept shape), machined surface (enveloping tool swept shape), and the contacting shape between the required surface and cutting edge during one cutting motion (unit-shaping element). We proposed the abstract model of the machining process and the abstract model of operation planning which could represent the linear equations. We also pointed out that there are only 15 types of machining operations.
  • H Tokunaga, F Tanaka, T Kishinami
    1998 JAPAN-U.S.A. SYMPOSIUM ON FLEXIBLE AUTOMATION - PROCEEDINGS, VOLS I AND II 857 - 863 1998 [Not refereed][Not invited]
     
    In order to check the kinematic performance of an assembly, a kinematic model of assembly using contact constraint representation in configuration space is needed. In this model, the motion of a component resulting from the imposed contact constraint is represented by the region in configuration space. However, it is difficult to derive the motion of the assembly because many constraints make the kinematic model of assembly too complex. In order to derive an equivalent minimum model of the kinematic model of an assembly, and to decrease the computational complexity, a constraint reduction procedure for the kinematic model of assembly in configuration space is proposed as follows: first, mapping rules of the kinematic model are proposed in order to realize the mapping from a feature-based kinematic model to a kinematic model in configuration space. Second, constraint reduction procedures in configuration space and a method for deriving the minimum kinematic model in configuration space are proposed. Third, based on the constraint reduction procedure in configuration space, feature-based constraint reduction is proposed by introducing a virtual feature; it is confirmed that TTRS reduction rules are valid feature-based constraint reduction rules. Using this reduction procedure, a method for deriving the feature-based minimum kinematic model is proposed. Fourth, using the feature-based minimum kinematic model and the mapping rule of the kinematic model, a method for deriving the minimum kinematic model in configuration space is proposed. Finally, in order to confirm the usefulness of the proposed constraint reduction, it is applied to an example of the kinematic model of assembly.
  • 鏡筒工学製品における統計的公差設計システムの開発（第1報）
    精密工学会誌 Vol.64 (No.7) 1690 - 1695 1998 [Not refereed][Not invited]
  • TOKUNAGA Hitoshi, TANAKA Fumiki, KISHINAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 Vol.64 (No.5) 738 - 742 0912-0289 1998 [Not refereed][Not invited]
     
    With kinematic analyses of assembly, it is difficult to derive the motion of the assembly because many constraints make the kinematic model of the assembly complex. In order to derive an equivalent minimum kinematic model for specific components, a constraint reduction procedure and reduction rules based on configuration of contact relations are proposed as follows : first, mapping rules of the kinematic model are proposed in order to realize the mapping from a (feature-based) kinematic model to a kinematic model in configuration space. Second, constraint reduction procedure in configuration space is proposed. Third, based on this constraint reduction procedure and the mapping rules, feature-based constraint reduction and reduction rules are proposed by introducing virtual feature. Finally, in order to confirrn the usefulness of the proposed method, it is applied to kinematic analysis of assembly.
  • TANAKA Fumiki, HOSHINO Hiroki, KISHINAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 64 (5) 758 - 762 0912-0289 1998 [Not refereed][Not invited]
     
    Process planning for machined parts typically requires reasoning about machining features. However, such machining features do not generally take into account a micro-level geometric characteristics of contacting shape between the required shape and the cutting tool, and the macro-level geometrical characteristics of removal volume. Therefore these machining features do not correspond directly to machining operations. The objective of this paper is to capture the fundamental characteristics of machining process and make suitable machining process models based on them. First, a model of the machining process based on the form shaping system theory proposed by Reshetov is constructed. Second, the characteristics of machined surface are the number of parameters in the family of the instantaneous positions of the cutting points, the machined surface, and the contact shape between the locus of the cutting edge in a cutting motion (named macro cutting tool) and the machined surface, are proposed. The characteristics of machining process are the number of macro cutting tool parameters, the number of feed directions in machining operation, and the number of enveloping constraints are also proposed. Finally, the abstract model of machining operation and the abstract model of operation planning which can represent, the linear equations are proposed.
  • TOKUNAGA Hitoshi, TANAKA Fumiki, KISHINAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 64 (11) 1608 - 1612 0912-0289 1998 [Not refereed][Not invited]
     
    In order to check the kinematic performance of an assembly, a kinematic model of assembly using contact constraint representation in configuration space was proposed in previous paper. In this model, the region of motion without collision is derived in configuration space from the imposed contact constraint. However, it is difficult to represent the motion since time is not taken into consideration. The objective of the research described in this paper is to introduce time into this kinematic model. This is accomplished as follows : first, by introducing configuration-time space, an expansion of the contact constraint representation is proposed. Second, based on this representation, a method for deriving the region for the position and orientation of the components in an assembly is proposed.
  • H Tokunaga, F Tanaka, T Kishinami
    FLEXIBLE AUTOMATION AND INTELLIGENT MANUFACTURING, 1998 483 - 493 1998 [Refereed][Not invited]
     
    With kinematic analyses of assembly, it is difficult to derive the motion of the assembly because many constraints make the kinematic model of assembly complex. In order to derive an equivalent minimum model of the kinematic model of assembly, and to decrease the computational complexity, a constraint reduction procedure for the kinematic model of assembly in configuration space is proposed as follows: first, mapping rules of the kinematic model are proposed in order to realize the mapping from a feature-based kinematic model to a kinematic model in configuration space. Second, constraint reduction procedure in configuration space and a method for deriving the minimum kinematic model in configuration space are proposed. Third, based on the constraint reduction procedure in configuration space, feature-based constraint reduction is proposed by introducing virtual feature; it is confirmed that TTRS reduction rules are valid feature-based constraint reduction rules. Using this reduction procedure, a method for deriving the feature-based minimum kinematic model is proposed. Fourth, using the feature-based minimum kinematic model and the mapping rule of the kinematic model, a method for deriving the minimum kinematic model in configuration space is proposed. Finally, in order to confirm the usefulness of the proposed constraint reduction, it is applied to an example of the kinematic model of assembly.
  • PG Ikonomov, F Tanaka, T Kishinami
    INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE 37 (10) 1465 - 1473 0890-6955 1997/10 [Not refereed][Not invited]
     
    In this paper an inspection method for geometrical tolerances for measurement with coordinate measuring machines (CMM) is proposed. It is indisputable that manual measuring methods cannot be applied for measurement with CMM. We also show that the usual procedure for inspection with CMM is inadequate for the implementation of ISO geometrical tolerances. The proposed model for calculation of the constraint substitute element ensures that inspections are carried out in accordance with ISO tolerance requirements, in which relationships between features and datum are implicitly defined. It is proposed to apply geometrical constraints that explicitly represent these relationships by means of fitting the mathematical form of the constraint substitute element. The resultant mathematical equations clearly illustrate tolerance design intent and can be applied with the small displacement screw (ISO/TR 10 360-1: Coordinate metrology--Part 1: Definitions and applications of the fundamental geometric principles) for inspection of the workpiece. This technique allows inspection to be performed in accordance with ISO geometrical tolerance. (C) 1997 Elsevier Science Ltd.
  • 斉藤 学, 田中 文基, 岸浪 建史
    精密工学会大会学術講演会講演論文集 1997 (1) 341 - 342 1997/03/01 [Not refereed][Not invited]
  • TOKUNAGA Hitosi, TANAKA Fumiki, KISHINAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 63 (8) 1081 - 1085 0912-0289 1997 [Not refereed][Not invited]
     
    In this paper, in order to check the kinematic performance of an assembly, a kinematic model of assembly using contact constraint representation in configuration space is proposed. In this model, the motion of a component resulting from the imposed contact constraint is represented by the region in configuration space. The proposed kinematic model is constructed by the following steps. First, a contact constraint representation between any two specific geometrical elements of two components in configuration space is introduced. Secondly, an expansion of this representation to that of a multiple-component assembly is proposed. Thirdly, the representation of the relation of constraints in configuration space is proposed. Finally, based on these representations, a method for deriving the region for the position and orientation of the components in an assembly is proposed.
  • Geometrical characteristics of machined shape for computer aided operation planning
    Proceedings of CAPE'97 1  1997 [Not refereed][Not invited]
  • Tool Modeling for Tool Life Cycle Support
    Proceedings of the 29th CIRP Internationl Seminar on Manufacturing Systems 299 - 304 1997 [Not refereed][Not invited]
  • Assembly Model using Contact Constraint Representation in Configuration Space for Kinematic Analysis -Influence of Geometrical Errors on Motion
    Proceedings of International Conference on Manufacturing Milestones toward the 21st Century MM21 421 - 426 1997 [Not refereed][Not invited]
  • Distortion Mechanism of Stereolithography Parts
    Proceedings of the 8th International Conference on Production Engineering(8th ICPE) 83 - 92 1997 [Not refereed][Not invited]
  • PG Ikonomov, T Kishinami, F Tanaka
    ADVANCES IN CONCURRENT ENGINEERING: CE97 97 277 - 284 1997 [Not refereed][Not invited]
     
    A NAVIGATION SYSTEM FOR VIRTUAL ASSEMBLY USING STEP DATA IN THE CONCURRENT ENGINEERING WORKING CONDITION IS PROPOSED. DEVELOPMENT OF SUCH A SYSTEM IS CRITICAL FOR SUCCESSIVE WORK OF THE PARTICIPANTS IN THE CONCURRENT ENGINEERING TEAM. VIRTUAL ASSEMBLY GOAL IS TO INTEGRATE ALL REQUIREMENTS OF DESIGN, MANUFACTURING AND ASSEMBLY. SHIFTING OF THE ASSEMBLY DESIGN AND VERIFICATION TO THE EARLY STAGE OF THE DESIGN OF THE PRODUCT WILL HAVE IMMENSE IMPACT ON THE WAY PRODUCT IS DEVELOPED FROM CONCEPTUAL STAGES TO REALIZATION. STEP DATA EXCHANGE ENSURES TRANSPARENT DATA FLOW TO ALL CYCLES OF THE DESIGN AND PRODUCTION PROCESS AND BETWEEN PARTICIPANTS OF THE CONCURRENT ENGINEERING GROUP. A WORKING SCHEMA OF A NAVIGATION SYSTEM FOR VIRTUAL ASSEMBLY USING STEP IS DEFINED.
  • H Narahara, F Tanaka, T Kishinami, S Igarashi, K Saito
    SOLID FREEFORM FABRICATION PROCEEDINGS, SEPTEMBER 1997 733 - 740 1053-2153 1997 [Not refereed][Not invited]
     
    In the industrial use of the Stereolithography, the precision is always a problem. Basic phenomenon of the solidification shrink has not sufficiently investigated. This study aims at clarifying the initial linear shrinkage of cured resin in a minute volume. Experimental equipment has been developed which measures the time history of the single strand in situ in a stereolithography machine. Analysis model about the time history of a minute volume linens shrinkage has been shown using with the measured shrinkage of a cured line segment. The relation between the time history of the linear shrinkage and the temperature was measured and the shrinkage in the minute volume after irradiation has been caused by the temperature variation.
  • An Analytical Approach for Evaluation of Perpendicularity between Motion Axes of Machine Tools
    Proceedings of International Conference on Manufacturing Milestones toward the 21st Century MM21 415 - 420 1997 [Not refereed][Not invited]
  • An Assembly Modeling Using Kinematic Constraint Representation in Configuration Space
    Proc. of the Japan-USA Symposium on Flexible Automation 761 - 766 1996 [Not refereed][Not invited]
  • TANAKA Fumiki, OKAMOTO Hideaki, KISHINAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 62 (5) 722 - 726 0912-0289 1996 [Not refereed][Not invited]
     
    A method of inspecting geometrical tolerances is important from the economic and qualitative viewpoints in coordinate measuring. However, there are some problems with CMM inspections based on ISO geometrical tolerances, due to the lack of a mathematical representation of the relationship between a toleranced feature and datum systems. No mathematical representation makes it impossible to evaluate the geometrical deviation of the related feature from a measured data set. In the first report, an evaluation method for related features with geometrical constraints in coordinate metrology was proposed. However, the proposed method could not be applied to the evaluation of related features under Maximum Material Condition. An inspection method using a computer model of the functional gauge (called the virtual gauge) is proposed in this report. The relationships between the geometrical elements of related features, datum, tolerance specification, measured data set, and functional gauge are represented in a formal description language EXPRESS. Computer experiments are conducted to verify the results and the validity of this method.
  • OKAMOTO Hideaki, SASAKI Toyoharu, TANAKA Fumiki, KISHINAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 62 (1) 125 - 129 0912-0289 1996 [Not refereed][Not invited]
     
    In coordinate metrology, when a certain geometrical relation between features is specified due to functional requirements, it is sometimes necessary to evaluate them as a lump. Such evaluation method, however, has not been well developed. In this paper, therefore, a lump of features is defined as a composite feature and its concept is described. In addition, an evaluation method of a composite feature has been proposed. It is based on fitting in position and orientation between a composite feature model and measured data sets, which are obtained by the measurement of a part using coordinate measuring machines. Two-plane and two-cylinder composite features have been given and formulated as concrete examples of a composite feature. Computer experiments have also been performed in both examples and validity of the method has been confirmed. Proposed method is easy to be extended to any other cases.
  • MITSUI Satoshi, TANAKA Fumiki, KISHINAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 62 (5) 717 - 721 0912-0289 1996 [Not refereed][Not invited]
     
    This paper deals with representing an information model of cutting tools for machining center to be used in a tool assembly. To comply quickly with requests from machine tools, FMS restricts machining work in machine tools, and each machine tool stores a number of cutting tools in its tool magazine. When more cutting tools ate needed, the costs of the tools become higher. To reduce the cost, there should be a tool management system which can automatically perform tool search and tool assembly. To make this system, there must be a tool database which can provide information necessary for those operations. In the present study, by introducing STEP technology and using EXPRESS and EXPRESS-G, the authors design an information model of cutting tools, thereby representing models of such basic tool database as parts structure, assembly, nominal size and real size.
  • YAMADA Makoto, TANAKA Fumiki, KISHIMAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 62 (12) 1742 - 1746 0912-0289 1996 [Not refereed][Not invited]
     
    In this paper a formulation by which perpendicularity of motion of vertical milling machine is evaluated, is shown. By using it, an estimation method for perpendicularity of motion between X-, Y- and Z- axis based on the master block measuring is proposed. The proposed method has following characteristics : (1) the perpendicularity of motion of X-, Y- and Z- axis is estimated without interference of setting posture of cutting tool, since the geometric error components is derived from driving planes which is calculated by measured points on master block, (2) perpendicularity of motion is estimated without interference of setting errors of master block, since the geometric error components are derived by inner products of normal vectors of driving planes which are independent of coordinate system on machine tools, and (3) since the model of machine tools with geometric errors is constructed of the driving motion and the perpendicularity of motion only, it is more simple to estimate the perpendicularity of motion between X-, Y- and Z- axis.
  • PG Ikonomov, T Kishinami, F Tanaka
    ADVANCES IN CONCURRENT ENGINEERING: CE96 96 363 - 370 1996 [Not refereed][Not invited]
     
    We propose a Virtual assembly model for concurrent engineering using STEP data exchange. It is a reality assembly based approach for assembly at the design stage. The functional requirements of the tolerance model are specified and used for testing of the assembly model. An integrated EXPRESS-G schema of the virtual assembly is provided. Suggested structure and design workflow are a concurrent design process with the possibility for data exchange using STEP standard.
  • A Form Fitting Method for Composite Features in Coordinate Metrology
    Proc. of 3rd International Symposium on Measurement Technology and Intellingent Instruments 83 - 90 1996 [Not refereed][Not invited]
  • Inspection method for geometrical tolerances using coordinate measuring machine
    Computer-Aided Tolerancing 298 - 311 1996 [Not refereed][Not invited]
  • OKAMOTO Hideaki, SASAKI Toyoharu, TANAKA Fumiki, KISHINAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 61 (8) 1116 - 1120 0912-0289 1995/08/05 
    In the geometrical tolerance standards, related features are defined by the spatial relationship between datums and toleranced features. This relationship, therefore, must be taken into consideration for inspecting workpieces, which are designated on their drawings as related features. In this paper, an evaluation method for related features with geometrical constraints in coordinate metrology has been proposed. Geometrical constraints in position and orientation, which are formulated as linear equations, has been used in this method, which is based on the small displacement screw model. The results obtained by the proposed algorithm have also been analyzed in comparison with existing related standards. Computer simulation has been performed on some cases to verify the results and validity of the method has been confirmed.
  • MITSUI Satoshi, TANAKA Fumiki, KISHINAMI Takeshi
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 61 (6) 799 - 803 0912-0289 1995/06/05 
    This paper deals with a design method of a tool database to be used in tool use planning. To increase the efficiency of the tool use in a flexible automated manufacturing system, it is necessary for the tool database to support information used in the whole field of the tool life cycle and in the tool use. A management system sharing with some tools in some machine tools and using them, can make the best use of tool capacity. For the realization of this system, the tool use needs information to select tool instance and to deploy it in the place just in time, based on tool status and machining schedule. An activity model of such a system for FMS is constructed for clarifying requirements for a tool database. Then to design such a tool database for satisfying the requirements, this study introduces an object-oriented method such as STEP technology, and implements the database using EXPRESS, C++, and object oriented database system.
  • H TOKUNAGA, F TANAKA, T KISHINAMI
    PROCEEDINGS OF 1995 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1-3 2740 - 2745 1050-4729 1995 [Refereed][Not invited]
  • M YAMADA, F TANAKA, T KISHINAMI
    ADVANCEMENT OF INTELLIGENT PRODUCTION (1) 209 - 214 1994 [Refereed][Not invited]
  • F TANAKA, T KISHINAMI
    ADVANCEMENT OF INTELLIGENT PRODUCTION (1) 675 - 680 1994 [Refereed][Not invited]
  • S MITSUI, F TANAKA, T KISHINAMI
    ADVANCEMENT OF INTELLIGENT PRODUCTION (1) 120 - 125 1994 [Refereed][Not invited]
  • TANAKA Fumiki, KIKUCHI Yoshihito
    Journal of the Japan Society of Precision Engineering 公益社団法人精密工学会 59 (12) 1931 - 1936 0912-0289 1993/12/05 
    STEPにおける情報モデルの詳細を理解するには, まずEXPRESSの機能とそのモデル表現方法の理解が必須となる.本解説では, EXPRESSの細目よりもSTEP規格における位置付けや, モデリングの方法, 言語仕様の特徴, 実装方法との関係等に関して述べた.本解説がSTEP/EXPRESSの理解や実装化, 研究開発への参考になれぽ幸いである.
  • F TANAKA, T KISHINAMI
    IFIP TRANSACTIONS B-APPLICATIONS IN TECHNOLOGY 3 361 - 376 0926-5481 1992 [Refereed][Not invited]
     
    Features are abstraction ideas from application viewpoints. For example, the Design Feature is the shape abstraction from the design view, and the Machining Feature is one from the machining operation view. Especially the Machining Feature is a very important idea for connecting the product model and the machining operations. This paper deals with 1) the definition of the Machining Features and their attributes, 2) the structure and classification of the Machining Feature based on form shaping operation, tools and the surface conditions, and 3) the Machining Feature based model.
  • F TANAKA, T KISHINAMI
    HUMAN ASPECTS IN COMPUTER INTEGRATED MANUFACTURING 3 361 - 376 0926-5481 1992 [Refereed][Not invited]
  • 山田 誠, 田中 文基, 岸浪 建史
    函館工業高等専門学校紀要 函館工業高等専門学校 (26) p25 - 32 0286-5491 1992 [Not refereed][Not invited]
  • 山田 誠, 田中 文基, 岸浪 建史
    函館工業高等専門学校紀要 函館工業高等専門学校 (25) p49 - 54 0286-5491 1991 [Not refereed][Not invited]
  • 山田 誠, 田中 文基, 岸浪 建史
    函館工業高等専門学校紀要 函館工業高等専門学校 (25) p39 - 48 0286-5491 1991 [Not refereed][Not invited]

MISC

Books etc

  • 工作機械の形状創成理論－その基礎と応用－<稲崎一郎監修>
    養賢堂 1997

Presentations

Association Memberships

  • 精密工学会   日本機械学会   

Works

  • 北のものづくり総合技術交流会
    2010 - Today

Research Projects

  • 個別多軸工作機械の特性を生かした工程設計のための加工機能のデジタルツイン
    基盤研究(C)
    Date (from‐to) : 2019/04 -2022/03 
    Author : 田中 文基
  • Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research
    Date (from‐to) : 2012/04 -2014/03 
    Author : ONOSATO Masahiko, TANAKA Fumiki
     
    The subject of this study is to represent the positions, orientations, and forms of dynamic objects and to utilize the representations in design and planning with respect to them. In a four-dimensional space representing a spatio-temporal space, four-dimensional geometric models are constructed with tetrahedrons which determine the boundary of 4D body. Based on this shape data schema, a four-dimensional geometric modeling system has been developed. The proposed method and the developed system were evaluated by applying to three problems: collision avoidance problem of moving objects, representing 5DOF cutting with ball-end milling, and water-level changes in the tsunami disaster.
  • 実工作機械適応型作業設計システムの開発研究
    工作機械技術振興財団：試験研究助成A
    Date (from‐to) : 2011/06 -2012/05 
    Author : 田中 文基
  • 特徴情報表現に基づくNCデータ解析システムの開発研究
    工作機械技術振興財団：試験研究助成A
    Date (from‐to) : 2009/06 -2010/05 
    Author : 田中 文基
  • 文部科学省：科学研究費補助金(基盤研究(B))
    Date (from‐to) : 2006 -2007 
    Author : 小野里 雅彦, 田中 文基, 伊達 宏昭
     
    実世界の存在物と仮想世界の存在物とが相互に連関し,ある種の双対性を実現した複素生産空間の概念の定式化と,それに基づくシステム開発を実施した.複素生産空間の概念的な図式として,実世界面と仮想世界基準面からなる抽象的な空間を考え,世界に対する記述が時間の進行とともに意味が推移していくことを示した.システムの開発に関しては,実-仮想の表現実体が混在する作業環境において,それらを同一の指示デバイスを用いて指示することができるユニバーサルポインティングシステムの開発を行った.また,発話による直示表現による作業環境中の対象物指示と音声認識とテキスト処理を用いた発話記録システムを開発することで,作業環境において,指示対象と発話内容を連携させた形での技術情報の蓄積および取り出し可能とした.また,3次元の対象物に対する情報の付与と参照を直感的に行うためのデバイスとして拡張現実感を使用した3次元ユーザインタフェースを開発し,サイバーアノテーション環境の構築とその有効性を検証した.また,サイバーフィールドのモデリングに関しては仮想環境中で生産の業務を行う仮想作業者の開発,実環境に対する3次元計測データからCAD等で形状定義された対象物を認識する手法の開発,時間変化をする3次元世界を4次元の形状としてモデリングする4次元メッシュモデリングシステムなどを開発し,複素生産空間を実現するための基盤を整備し...
  • Ministry of Education, Culture, Sports, Science and Technology：Grants-in-Aid for Scientific Research(基盤研究(C))
    Date (from‐to) : 2005 -2006 
    Author : Fumiki TANAKA, 岸浪 建史, 小野里 雅彦
     
    The manufacturing industry is increasingly dependent on digital tools, such as CAD, CAE, CAM, product data management (PDM) systems, and CNC machines to design and manufacture products. In order to keep the prepotencies in manufacturing industry for global manufacturing systems, it is necessary to establish the traceable manufacturing systems based on these digital tools, which have abilities of the resolving machining discrepancy rapidly and the judgment of the machining result validly. However, the output data from the current CAM systems cannot support the traceable manufacturing systems...
  • Ministry of Education, Culture, Sports, Science and Technology：Grants-in-Aid for Scientific Research(基盤研究(S))
    Date (from‐to) : 2002 -2006 
    Author : Takeshi KISHINAMI, 金井 理, 赤間 清, 田中 文基, 近藤 司, 三井 聡, 山田 誠
     
    The manufacturing industry is increasingly dependent on digital tools, such as CAD, CAE, CAM, product data management (PDM) systems CNC machines to design and manufacture products. Moreover, the movement toward concurrent engineering drives the need for frequent transformation of the product data between different digital tools. In order to realize the articulate link between design and manufacturing and the traceable manufacturing system, it is necessary to realize interoperable digital tools which represent the semantics of information independently of any implementations. Interoperabilit...
  • Ministry of Education, Culture, Sports, Science and Technology：Grants-in-Aid for Scientific Research(基盤研究(B))
    Date (from‐to) : 2002 -2004 
    Author : Masahiko ONOSATO, 寺本 孝司, 近藤 司, 金子 俊一, 田中 文基
     
    For designing and operating manufacturing systems, a number of decision-makings are done by designers, engineers, and workers. Thus, we can think that each manufacturing system is realized on the accumulation of knowledge application by many experts. Now, many industrial companies try to preserve such knowledge for factory design and operation in order to keep or improve the manufacturing ability. The authors had an idea that Virtual Manufacturing Systems (VMS) can be applied for knowledge acquisition/storage/utilization.For categorizing manufacturing knowledge, three viewpoints were introd...
  • Ministry of Education, Culture, Sports, Science and Technology：Grants-in-Aid for Scientific Research(基盤研究(C))
    Date (from‐to) : 2002 -2003 
    Author : Fumiki TANAKA, 岸浪 建史
     
    It is currently difficult to develop a Man-Machine Collaborated Manufacturing Support system. The reason of such difficulty is resulted from current Manufacturing Definition Data (NC data). The NC data is difficult for operator to understand the machined shape and detail parameter of machining operation. In this research project, Manufacturing Definition Data Markup Language (MDDML) based on XML is proposed. The conclusions of the project are follows :1)Manufacturing Definition Data model based on Manufacturing Feature model is proposed. Proposed model is described in EXPRESS language.2)Man...
  • Ministry of Education, Culture, Sports, Science and Technology：Grants-in-Aid for Scientific Research(基盤研究(B))
    Date (from‐to) : 2000 -2001 
    Author : Takeshi KISHINAMI, 田中 文基, 金井 理
     
    A significant amount of research for machining process planning and machining feature extraction has been carried out for realizing an integrated CAD/CAPP/CAM system. The Standard for the Exchange of Product model data (STEP) has also emerged as a viable method for product model data exchange among design activities. However, a consistent STEP/AP set for integrating design, process planning and machining for mechanical components has not completely been developed thus far, because process planning is very complicated for analyzing a process and making a support data model, and STEP is inten...
  • Ministry of Education, Culture, Sports, Science and Technology：Grants-in-Aid for Scientific Research(基盤研究(B))
    Date (from‐to) : 1998 -1999 
    Author : Takeshi KISHINAMI, 田中 文基, 金井 理
     
    This research deals with feature models of a machining operation and machined shapes for single cutting edge machining, which correspond directly to the machining process model. The feature model of the machining operation is proposed from the viewpoint of the dimension of a macro cutting tool, the dimension of feed motion, and the number of enveloping constraints. The feature model of the machined shape is also proposed from the viewpoint of the removal volume, the machined surface, and the surface texture. The linkage between both feature models is accomplished by the concept of a working...
  • 文部科学省：科学研究費補助金(奨励研究(A))
    Date (from‐to) : 1997 -1998 
    Author : 田中 文基
     
    NCシステムのオープン化は、加工システム構築の自由度を増すために、徐々に進められている。このオープン化の流れにおいて、加工システムの高機能化、知能化は、重要な課題である。加工システムの高度な自動化、知能化を達成するには、加工システムが加工システム自身を認識できなければならない。すなわち、オープンNCシステムでは、NCシステムに別の工作機械がつながれていても、すぐにその工作機械の構造と動作をNCシステムに与える方法を提案する必要がある。そこで、本研究では、リンク構造間の相対運動とリンク構造の幾何情報を保持した工作機械機構モデルをISO 10303で規格化されているEXPRESS言語を用いてS-U表記法に基づきモデル化する。次に実際の工作機械に対し、その機構を表現するパラメータを求め、NCシステムと工作機械との通信方法を確立し、有効性を確かめるとともに、NC機能の高度化の一例として、加工シミュレーションシステムをパソコン上で実装する。以上を目的として、昨年度の研究成果を踏まえ、以下の結論を得た。1) 知能型オープンNCの加工検証機能と作業領域検証機能の実現アルゴリズムの導出加工検証機能と作業領域検証機能のアルゴリズムを、工作機械の機構モデルを参照する形でアルゴリズムを実現した。2) 知能型オープンNCのパーソナルコンピュータによる実現・評価3)で提案したアルゴリズムを用い、パーソ...
  • Ministry of Education, Culture, Sports, Science and Technology：Grants-in-Aid for Scientific Research(試験研究(B), 基盤研究(B))
    Date (from‐to) : 1995 -1996 
    Author : Takeshi KISHINAMI, 山田 誠, 田中 文基
     
    In this research a formulation by which perpendicularty of motion of vertical milling machine is evaluated, is shown. By using it, an estimation method for perpendicularity of motion between X-, Y- and Z- axis based on the master block measuring is proposed. The proposed method has following characteristics : (1) the perpendicularity of motion X-, Y- and Z- axis is estimated without interference of setting posture of cutting tool, since the geometric error components is derived from driving planes which is calculated by measured points on master block, (2) perpendicularity of motion is esti...
  • 文部科学省：科学研究費補助金(奨励研究(A))
    Date (from‐to) : 1995 -1995 
    Author : 田中 文基
     
    様々な形状加工へのニーズや高能率、高精度加工への要求から多軸工作機械による加工法に関する研究が多数行なわれている。しかし、多軸工作機械は工場で実際に使われている例が少ない。その理由としては、五軸制御工作機械などに代表される、工具姿勢の制御が可能な工作機械に対し、工具の姿勢を全て考慮し、工具干渉の回避を可能とする工具オフセット面生成法が困難なためである。そこで、本研究では、工具の位置と姿勢を同時に表現するために、配位空間を用いた方法を提案、工具の位置と姿勢を同時に表現するとともに、工具干渉回避を可能とするオフセット面の配位空間における表現を提案し、上述の問題点を解決する。このため、工具の位置と姿勢を同時に表現する配位空間を用い、工具オフセット面の理論的解析及び数学的表現を行ない、それを実現するためのアルゴリズムの提案及び実装を行なう。上記の目的で研究を行ない、以下の結論を得た。1)工具オフセット面生成及び工具経路生成法の調査:多軸工作機械における工具オフセット面生成法及び工具経路生成法の調査を行ない、従来法の問題点を明らかにした。2)配位空間の表現法の調査と配位空間による工具オフセット面のモデル化:工具の位置と姿勢を同時に表現する配位空間を用い、工具オフセット面の理論的解析を行なうと共に、配位空間の表現法や配位空間で用いられているアルゴリズムの検討を行なった。また、工具オフセッ...
  • Ministry of Education, Culture, Sports, Science and Technology：Grants-in-Aid for Scientific Research(一般研究(B))
    Date (from‐to) : 1994 -1995 
    Author : Takeshi KISHINAMI, 田中 文基
     
    To increase the efficiency of the tool use in a flexible automated manufacturing system, it is necessary for the tool database to support information used in the whole field of the tool life cycle. A management system sharing with some tools in some machine tools and using them, can make the best use of tool capacity.The conclusions of our research can be summarzed as follows :1)The tool use in the Tool Life Cycle Support Activity was represented using process description method IDEF0, and the necessary information and relationships among pieces of the information were clarified.2)The tool ...
  • 文部科学省：科学研究費補助金(奨励研究(A))
    Date (from‐to) : 1994 -1994 
    Author : 田中 文基
     
    高精度加工を実現するためには、工作機械の運動機能を計算機で表現し、加工運動シミュレーション、解析などを行い補正することが必要となる。しかし、実際に計算機を用いて加工運動シミュレーション等を行うには、工作機械の構造などの計算機表現が十分でなく、加工運動シミュレーションや補正法などなされていない。その理由としては、工作機械の構造と運動を表すためには、リンク構造間の相対運動をマトリクス表現で表す方法では、人間が概念的に理解する為、及び計算機により工作機械の運動シミュレーションを行う上で適切な形式ではない、が挙げられる。本研究は、工作機械の構造と運動を、工作機械の各構成要素の構造や構成要素間の運動を詳述する情報モデルとして表現しそれを用いて工作機械における計算機支援システムを実現することを目的としている。上記の目的で研究を行ない、以下の結論を得た。1)工作機械の運動モデルの理論の調査、検討工作機械の運動モデルについて、従来研究の調査により工作機械の運動モデルとして表現すべき情報は、リンク間の相対運動及び運動座標系間の一つのリンク上における位置関係である。この観点から、座標系の設定法として、形状創成関数、D-H記法、S-U記法を比較し、本研究ではS-U記法が適していることがわかった。2)オブジェクト指向言語による工作機械の運動モデルの情報モデル表現法に関する検討上述した手順により求めら...
  • 文部科学省：科学研究費補助金(奨励研究(A))
    Date (from‐to) : 1993 -1993 
    Author : 田中 文基
     
    従来、設計と加工の情報伝達の必然性、CADとCAMとの有機的結合が叫ばれてきたが、依然として困難な状態にある。それは、設計(CAD)モデルが形状の幾何の観点や機能の観点からの表現しか行われていないためである。この問題点を解決すべく加工特徴という概念が導入されてきたが、これまでは、工具を中心にした分類や形状特徴を中心にした分類方法であり、加工モデルに必要な加工作業の観点での表現が行われていなかった。そこで本研究は、加工単位作業を十分に支援するモデルとして加工特徴を定義し、加工作業を加工特徴を用いて記述することを目的としている。本研究では、以下の手順で研究を遂行した。1)単位加工作業表現に関する理論的検討単位加工作業の抽象化を、V.T.Portmanの形状創成機能モデルの考え方を基本として工作機械、工具、加工運動を含めた加工作業モデルとして抽象化を行った。この加工作業モデルと加工特徴を対応させるように、加工特徴のモデル化を行った。2)基準面、データム面を考慮した加工順序の表現方法基準面、データム面に関する情報は、加工特徴間の空間配置関係に依存している。この情報を基に、同一取り付け状態の加工特徴をグループモデルとして表現し、加工順序の表現法提案した。3)加工作業モデルを用いたモデリングシステムの試作と評価以上のモデルのモデリングシステムをコンピュータ上で実現し、穴加工における加工作...
  • Ministry of Education, Culture, Sports, Science and Technology：Grants-in-Aid for Scientific Research(一般研究(B))
    Date (from‐to) : 1992 -1993 
    Author : Takeshi KISHINAMI, 田中 文基
     
    It is generally agreed that higher level descriptions to refer to familiar features are needed to describe engineering components and machining operations, and one of the primary roles of features is the interface between design and process planning (or machining operation). The features are an abstraction idea from application viewpoints.For example, the Design feature is the shape abstraction from the designview, on the other hand, the Machining feature is one from the machining operation view.Especially the Machining feature is a very important idea for connecting the productmodel and it...
  • Ministry of Education, Culture, Sports, Science and Technology：Grants-in-Aid for Scientific Research(一般研究(B))
    Date (from‐to) : 1990 -1991 
    Author : 岸浪 建史, Takeshi KISHINAMI, 田中 文基
     
    It is generally recongnized that shape recongition in machining process is a very important issue for realizing an automated manufacturing system. In the machining system, required machined shape is given by geometrical model, then a model based computer vision system will be adequate for the part shape recognition system.Aims of research works are follows : 1) To establish the mapping procedure between the points on image and points of geomarical model. -introduce the DKA method for mapping procedure. -introduce the Small Displacement Screw method for mapping proceduure 2) To propose the r...
  • Ministry of Education, Culture, Sports, Science and Technology：Grants-in-Aid for Scientific Research(一般研究(C))
    Date (from‐to) : 1988 -1990 
    Author : T. KISHINAMI, 金井 理, 斎藤 勝政, 田中 文基
     
    The machining simulation technique is very important for computer aided manufacturing system and NC data verification. If we can forecast the machining phenomena, for example, cutter collision, cutter removal shape, removed volume and cutting force by using simulation techniques, a more high level computer controlled machining system can be realized. Some research on machining simulation based on conventional geometric modeling techniques such as CSG or Breps have already been done.However, these approaches were time consuming and complex because of the massive set operations between workpi...
  • 生産システムにおける情報モデル化と支援システム開発論
    Date (from‐to) : 1988

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