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A System for Computer Aided Design of Cold Forging Process

Research Project

Project/Area Number 01850156
Research Category

Grant-in-Aid for Developmental Scientific Research

Allocation TypeSingle-year Grants
Research Field 金属加工(含鋳造)
Research InstitutionOsaka University

Principal Investigator

OSAKADA Kozo  Osaka University, Faculty of Engineering Science, Professor, 基礎工学部, 教授 (50031109)

Co-Investigator(Kenkyū-buntansha) KATO Takasi  Government Industrial Research Institute, NAGOYA, Mechanical Engineering Divisio, 機械部, 主任研究官 (90093012)
KUDO Hideaki  Tokyo Denki University, Faculty of Engineering, Professor, 工学部, 教授 (90017848)
NAKAMURA Simesu  Teikyo University, Faculty of Science and Engineering, Professor, 理工学部, 教授 (10029431)
SHINAGAWA Kazunari  Osaka University, Faculty of Engineering Science, Research Associate, 基礎工学部, 助手 (30215983)
MORI Ken-ichro  Osaka University, Faculty of Engineering Science, Associate Professor, 基礎工学部, 助教授 (80127167)
Project Period (FY) 1989 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥6,100,000 (Direct Cost: ¥6,100,000)
Fiscal Year 1991: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1990: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1989: ¥4,300,000 (Direct Cost: ¥4,300,000)
KeywordsForging / Process Design / Expert System / Simulation / FEM / AI / Neural Network / Fuzzy
Research Abstract

An expert system has been developed to assist the cold forging engineers in planning the forming process by utilizing various innovative technologies. The primary functions of the system can be enumerated as knowledge acquisition, product registration, process generation, determination of order of evaluation, process evaluation, process visualization, and verification of metal flow of process in the order of their successive implementations in the system.
Process candidates of any given product are generated efficiently with either the variant-and-generative approach or the neural network system for process generation. The process evaluation strategy to evaluate each process according to the order of evaluation determined significantly reduces the time spent for evaluation, and the metal flow simulation carried out at the end of the process evaluation ensures only a pretty feasible process is adopted as the actual process. The combination of FEM simulation and neural networks is found effective to acquire knowledge to compensate the deficiency of the knowledge base of the system.
Although the prototype of the system has been established, there is a lot of work that needs to be accomplished in the future to complete the expert system for process planning of cold forging.
(1) At the present stage, only four forming methods are considered in the system. Other combined cold-forming methods should be taken into account.
(2) The knowledge base of the system is still not sufficient to enable quantitative evaluation of various operations. The applicability of the system should be broadened in the future.
(3) Occurrence of the internal ductile fracture and the surface crack of the product should be predicted by the evaluation system. Fatigue crack, tribology, etc. of the tool have to be considered in a system to predict tool life.
(4) Energy consumption, cost, and other economical factors should also be accounted in process selection.

Report

(4 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • 1989 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] K.Osakada: "An Expert System for Cold-Forging Process Based on FEM Simulation" Annals of CIRP. 39. 249-252 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] G.B.Yang: "An Expert System for Process Planning of Cold Forging" Advanced Technology of Plasticity. 1. 109-114 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K.Osakada: "Neural Networks for Process Planning of Cold Forging" Annals of CIRP. 40. 243-246 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K.Osakada: "Application of Neural Networks to an Expert System for Cold Forging" International Journal of Machine Tools & Manufacture. 31. 577-587 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 楊国彬: "冷間鍛造工程設計用エキスパ-トシステム" 第3回中日冷間鍛造学術座談会論文集. 9-12 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K. OSAKADA: "An Expert System for Cold-Forging Process Based on FEM Simulation" Annals of the CIRP. 39. 249-252 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] G. -B. YANG: "An Expert System for Process Planning of Cold Forging" Advanced Technology of Plasticity. 1. 109-114 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K. OSAKADA: "Neural Networks for Process Planning of Cold Forging" Annals of the CIRP. 40. 243-246 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K. OSAKADA: "Application of Neural Networks to an Expert System for Cold Forging" International Journal of Machine Tools and Manufacture. 31. 577-587 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] G. -B. YANG: "An Expert System for Process Planning of Cold Forging" Proceedings of 3rd China-Japan Joint Symposium on Cold Forging. 9-12 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 楊 国彬: "炭素鋼の変形抵抗推定ファジイシステム" 平成3年度塑性加工春季講演会講演論文集. 29-32 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 塩見 誠規: "液体を内部に含む固体金属の加工の有限要素シミュレ-ション" 平成3年度塑性加工春季講演会講演論文集. 421-424 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 楊 国彬: "メンバ-シップ関数の自動作成モデルを用いた炭素鋼の変形抵抗ファジイ推定法" 第42回塑性加工連合講演会講演論文集. 551-554 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] K.Mori: "Finite element modelling of forming process of solid metal with liquid phase" J.Mater.Process.Tech.27. 111-118 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 小坂田 宏造: "ニュ-ラルネットワ-クによる鍛造工程ル-ルの学習" 平成2年度塑性加工春季講演会講演論文集. 551-514 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 楊 国彬: "鍛造エキスパ-トシステムへのニュ-ラルネットワ-クの応用" 第41回塑性加工連合会講演会講演論文集. 439-442 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Kozo Osakada: "Application of Neural Network to Expert System for Cold Forging" International Journal of Machine Tools & Manufacture. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Kozo Osakada: "Neural Networks for Process Planning of Cold Forging" Annals of CIRP. 40. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 小坂田 宏造: "剛塑性有限要素法を用いた温度および残留応力の解析" 平成2年度塑性加工春季講演会講演論文集. 221-224 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 岡田 達夫: "有限変形理論に基づく剛塑性有限要素法による高速変形のシミュレ-ション" 第41回塑性加工連合講演会講演論文集. 611-614 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Guobin Yang: "An Expert System for Process Planning of Cold Forging" Proceedings of the 3rd International Conference on Technology of Plasticity. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] Kozo Osakada: "Expert System for Cold Forging Process Based on FEM Simulation" Annals of the C.I.R.P. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 小坂田宏造: "FEMシミュレ-ションを用いた冷間鍛造用エキスパ-トシステム" 第40回塑性加工連合講演会講演論文集. 543-546 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 小坂田宏造: "スプライン成形の有限要素シミュレ-ション" 第40回塑性加工連合講演会講演論文集. 265-268 (1989)

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2019-02-15  

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