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Machining process for thin-walled workpiece using on-machine measurement of workpiece dynamic stiffness

Research Project

Project/Area Number 17K06078
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Production engineering/Processing studies
Research InstitutionKyoto University

Principal Investigator

Kono Daisuke  京都大学, 工学研究科, 准教授 (80576504)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywords低剛性工作物 / 動剛性 / 機上計測 / 自働化 / 振動 / 切削加工 / 機械工作・生産工学 / 精密部品加工
Outline of Final Research Achievements

In this study, a machining process based on an on-machine measurement of workpiece dynamic stiffness was proposed to support machining condition determination for thin-walled workpieces. A dynamic stiffness measurement method which does not require a sensor to measure the workpiece response was proposed. Owing to the proposed measurement method, an on-machine measurement system was developed to automatically measure the workpiece dynamic stiffness. The experimental results showed that appropriate machining conditions leading small workpiece vibrations can be determined by a simulation using the workpiece stiffness measured just before machining. Inappropriate jig conditions such as loosened clamping bolts can also be detected and modified in this process. The contribution of the proposed process in a near future is promising because a discussion has been begun to apply the proposed process to a practical production of aerospace industries.

Academic Significance and Societal Importance of the Research Achievements

測定対象物の応答を測定するためのセンサを必要としない新しい動剛性の測定方法を実現できた.本方法によって,工作物の動剛性の実地測定結果に基づいて,支持具の調整や加工条件の設定を行う加工プロセスを実現できた.本研究の成果により,航空機部品の加工など,低剛性で振動しやすいために,加工条件の設定が難しかったプロセスにおいて,振動の小さい適切な加工条件を早く確実に設定できるようになった.

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (10 results)

All 2020 2019 2018 2017 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (5 results) (of which Int'l Joint Research: 3 results) Remarks (2 results)

  • [Journal Article] Machining Process for a Thin-Walled Workpiece Using On-Machine Measurement of the Workpiece Compliance2019

    • Author(s)
      Umezu Takuma、Kono Daisuke
    • Journal Title

      International Journal of Automation Technology

      Volume: 13 Issue: 5 Pages: 631-638

    • DOI

      10.20965/ijat.2019.p0631

    • NAID

      130007703283

    • ISSN
      1881-7629, 1883-8022
    • Year and Date
      2019-09-05
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] On-machine measurement method for dynamic stiffness of thin-walled workpieces2019

    • Author(s)
      Kono Daisuke、Umezu Takuma
    • Journal Title

      Precision Engineering

      Volume: 60 Pages: 299-305

    • DOI

      10.1016/j.precisioneng.2019.08.015

    • NAID

      120006731196

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evaluation of on-machine measuring method for dynamic stiffness of thin-walled workpieces2018

    • Author(s)
      Umezu Takuma、Kono Daisuke、Matsubara Atsushi
    • Journal Title

      Procedia CIRP

      Volume: 77 Pages: 34-37

    • DOI

      10.1016/j.procir.2018.08.204

    • NAID

      120006695758

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] On-Machine Measuring Instrument of Workpiece Compliance Uing Laser Interferometer2020

    • Author(s)
      Daisuke Kono
    • Organizer
      2020 International Symposium on Flexible Automation ISFA2020
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ファイバーレーザ干渉計を用いた工作物の機上動剛性測定装置の開発2019

    • Author(s)
      古澤 正崇
    • Organizer
      2019年度精密工学会秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] オンマシン動剛性計測に基づく低剛性工作物の加工プロセス2018

    • Author(s)
      梅津拓真,河野大輔
    • Organizer
      第18回国際工作機械技術者会議(IMEC2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 薄肉工作物の機上動剛性測定法の評価2018

    • Author(s)
      梅津拓真,河野大輔,松原厚
    • Organizer
      2 0 1 8 年度精密工学会春季大会学術講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] A measuring device for dynamic stiffness of thin-walled workpiece2017

    • Author(s)
      Daisuke Kono, Takuma Umezu
    • Organizer
      6th International Conference on Virtual Machining Process Technology (VMPT)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Remarks] 京都大学工学研究科マイクロエンジニアリング専攻精密計測加工学研究室研究紹介

    • URL

      https://mmc.me.kyoto-u.ac.jp/research_ja

    • Related Report
      2019 Annual Research Report
  • [Remarks] 河野大輔 研究活動の紹介

    • URL

      http://mmc.me.kyoto-u.ac.jp/people/kono/index.html

    • Related Report
      2018 Research-status Report 2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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