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Realization of scanning ECM for difficult-to-machine materials by electrolyte suction tool with electrode for narrowing current region

Research Project

Project/Area Number 18H01348
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 18020:Manufacturing and production engineering-related
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

NATSU WATARU  東京農工大学, 工学(系)研究科(研究院), 教授 (40345335)

Co-Investigator(Kenkyū-buntansha) 花崎 逸雄  東京農工大学, 工学(系)研究科(研究院), 准教授 (10446734)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2020: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2019: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2018: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Keywords電解加工 / 難加工材 / 電流密度 / 不働態被膜 / 吸引工具
Outline of Final Research Achievements

In this study, in order to realize the scanning electrochemical machining (ECM) of difficult-to-process materials, a novel electrolyte suction tool with an auxiliary anode was proposed. First, the limiting effect of the proposed tool in narrowing the low-current-density region was verified by numerical analysis and machining experiments. Then, the phenomenon of the formation of a passive film and material dissolution in the scanning ECM of titanium alloys was modelled, based on experimental results and analysis. With the model, the influence of the area where the electrolyte exists and the tool scanning speed was clarified. At last, in order to shorten the film formation time and obtain sufficient processing time, a new tool that narrows the electrolyte area was designed and manufactured. It was confirmed through machining experiments that the uniform dissolution of Ti-6Al-4V, a typical titanium alloy, was realized by the newly designed electrolyte suction tool.

Academic Significance and Societal Importance of the Research Achievements

本研究では、①工具直下に電解液を留め絞込電極により工作物表面の電流域を絞り込み低電流密度域を格段に縮小する工具を開発し、②提案工具を利用して加工点が低電流密度に触れる時間を短縮することにより不働態被膜の発生を抑制して難加工材の走査電解加工を実現し、③難加工材の走査電解加工における不働態被膜生成と材料溶出のモデル化を行い、電解液存在領域と走査速度の影響を明らかにして体系化することが、学術的な特色と独創的な点である。また、走査電解加工法の確立は、産業界が求める難加工材の高精度と高生産性のニーズに答えることになり、新しい価値の創出につながる。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report

Research Products

(19 results)

All 2021 2020 2019 2018 Other

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (14 results) (of which Int'l Joint Research: 4 results) Remarks (3 results)

  • [Journal Article] Problems and Solutions in Scanning Electrochemical Machining of Titanium Alloys2020

    • Author(s)
      Hizume Saori, Natsu Wataru
    • Journal Title

      Procedia CIRP

      Volume: 95 Pages: 712-716

    • DOI

      10.1016/j.procir.2020.02.285

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Influence of electrolyte flow mode on characteristics of electrochemical machining with electrolyte suction tool2019

    • Author(s)
      Guixian Liu, Yongjun Zhang, Wataru Natsu
    • Journal Title

      International Journal of Machine Tools and Manufacture

      Volume: 142 Pages: 66-75

    • DOI

      10.1016/j.ijmachtools.2019.04.010

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Characteristics of electrochemical machining by using electrolyte suction tool with auxiliary anode2021

    • Author(s)
      Takafumi Tabata, Shuhei Kodama, Wataru Natsu, Guanxian Liu
    • Organizer
      euspen's 21st International Conference & Exhibition
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] チタン合金の電解加工において不働態被膜生成に与える電流密度と時間の影響2020

    • Author(s)
      日極さおり、夏 恒
    • Organizer
      2020年度精密工学会秋季大会学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 走査電解加工における補助陽極効果の検証2020

    • Author(s)
      田畑嵩奎、夏 恒、小玉脩平
    • Organizer
      電気加工学会全国大会(2020)
    • Related Report
      2020 Annual Research Report
  • [Presentation] Research on machining characteristics and tool wear in ECM with electrolyte suction tool with auxiliary anode2019

    • Author(s)
      Takafumi Tabata, Wataru Natsu, Guanxian Liu
    • Organizer
      3rd World Congress on Micro and Nano Manufacturing
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 補助陽極による電流域を制限する電解液吸引工具を用いた電解加工の特性2019

    • Author(s)
      田畑嵩奎、夏 恒
    • Organizer
      2019年度精密工学会秋季大会学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] チタン合金における不働態被膜の生成が電解加工特性に与える影響2019

    • Author(s)
      日極さおり、夏 恒
    • Organizer
      2019年度精密工学会秋季大会学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] チタン合金の電解加工における吸引工具の補助陽極の効果2019

    • Author(s)
      田畑嵩奎、夏 恒
    • Organizer
      電気加工学会全国大会(2019)
    • Related Report
      2019 Annual Research Report
  • [Presentation] 電解作用により生成された不働態被膜が電解加工に与える影響について2019

    • Author(s)
      日極さおり、夏 恒
    • Organizer
      電気加工学会全国大会(2019)
    • Related Report
      2019 Annual Research Report
  • [Presentation] チタン合金の電解加工における被膜生成に関する研究2019

    • Author(s)
      日極さおり、夏 恒、後藤昭弘
    • Organizer
      2019年度精密工学会春季大会学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 電解加工用吸引工具における電解液流れ方向の影響2019

    • Author(s)
      杉山智映、夏 恒
    • Organizer
      2019年度精密工学会春季大会学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Characteristics Investigation of ECM with Electrolyte Suction Tool with Built-in Auxiliary Anode for Narrowing Current Area2018

    • Author(s)
      Guixian Liu, Saori HIZUME, Wataru Natsu
    • Organizer
      The 21st International Symposium on Advances in Abrasive Technology
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Influence of suction pressure and flow direction on ECM characteristics with suction tool2018

    • Author(s)
      Guixian Liu, Wataru Natsu
    • Organizer
      17th International Conference on Precision Engineering
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 補助陽極による電流域を制限する電解液吸引工具を用いた電解加工の特性2018

    • Author(s)
      田畑嵩奎、劉桂賢、夏 恒
    • Organizer
      2018年度精密工学会秋季大会学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 電解液吸引工具を用いた電解加工における補助陽極の効果について2018

    • Author(s)
      田畑 嵩奎、夏 恒、劉桂賢
    • Organizer
      電気加工学会全国大会(2018)
    • Related Report
      2018 Annual Research Report
  • [Remarks] 東京農工大学夏研究室

    • URL

      http://web.tuat.ac.jp/~natsulab/

    • Related Report
      2020 Annual Research Report
  • [Remarks] 東京農工大学 大学院工学研究院先端機械システム部門 夏研究室

    • URL

      http://web.tuat.ac.jp/~natsulab/index.html

    • Related Report
      2019 Annual Research Report
  • [Remarks] 東京農工大学 大学院工学研究院先端機械システム部門 夏研究室

    • URL

      http://web.tuat.ac.jp/~natsulab/

    • Related Report
      2018 Annual Research Report

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Published: 2018-04-23   Modified: 2022-01-27  

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