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Study on high-efficiency processing of polycrystalline diamond by ultrasonic electro-discharge machining

Research Project

Project/Area Number 25420063
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Production engineering/Processing studies
Research InstitutionNippon Institute of Technology

Principal Investigator

Ninomiya Shinichi  日本工業大学, 工学部, 准教授 (80453950)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords超音波放電加工 / 多結晶ダイヤモンド焼結体 / 形彫り放電加工 / ワイヤカット放電加工 / 加工能率 / 電極消耗率 / 放電・研削逐次加工 / 多結晶ダイヤモンド焼結体(PCD) / 特殊加工
Outline of Final Research Achievements

For a purpose to improve electric discharge machinability of PCD composed of coarse diamond particles, which has been thought to be extremely difficult to EDM, in this study, a US-EDM method to give an ultrasonic vibration to an electrode in axial direction, flexural direction and complex direction that couples axial and flexural directions was attempted. As a result, it was found that EDM efficiency could be improved to 6 times higher than a standard efficiency obtained in machining conventional PCD and the electrode wear could be reduced to 1/2 by giving vibrations to the electrode in axial direction.
Furthermore, precise groove machining could be achieved on a cemented carbide workpiece by utilizing a combined method of EDM and grinding using only a single tool, i.e. a rotary PCD disc tool acting as an electrode for EDM and as a wheel for grinding.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (14 results)

All 2016 2015 2014 2013 Other

All Journal Article (6 results) (of which Peer Reviewed: 5 results,  Acknowledgement Compliant: 4 results,  Open Access: 3 results) Presentation (8 results) (of which Invited: 4 results)

  • [Journal Article] Precise machining method by combining EDM and grinding with a rotary PCD segment tool for cemented carbide2015

    • Author(s)
      Fumio Koga, Shinichi Ninomiya and Kiyoshi Suzuki
    • Journal Title

      Advanced Materials Research

      Volume: Vol.806 Pages: 446-451

    • DOI

      10.4028/www.scientific.net/amr.806.446

    • NAID

      130005486533

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] 機械加工研究室の研究概要(機械工学科の研究活動と教育活動)2015

    • Author(s)
      二ノ宮進一
    • Journal Title

      日本工業大学研究報告

      Volume: Vol.45, No.3 Pages: 99-102

    • NAID

      120005690682

    • Related Report
      2015 Annual Research Report
  • [Journal Article] Material Properties of a New PCD Made of Boron Doped Diamond Particles2014

    • Author(s)
      W.Chen, M.Iwai, S.Ninomiya, K.Suzuki
    • Journal Title

      Advanced Materials Research

      Volume: 1017 Pages: 154-159

    • DOI

      10.4028/www.scientific.net/amr.1017.154

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Wire-EDM Properties of EC-PCD Made up of Boron Doped Diamond Particles2014

    • Author(s)
      William Chen, Shinichi Ninomiya, Shunsuke Nochi, Manabu Iwai, Kiyoshi Suzuki
    • Journal Title

      Advanced Materials Research,Advances in Abrasive Technology XVII

      Volume: Vol.1017 Pages: 770-775

    • DOI

      10.4028/www.scientific.net/amr.1017.770

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Performance of EC-PCD Made of Boron Doped Diamond as an Electrode for EDM of Cemented Carbide2014

    • Author(s)
      William Chen, Manabu Iwai, Shinichi Ninomiya, Kiyoshi Suzuki
    • Journal Title

      Advanced Materials Research,Advances in Abrasive Technology XVII

      Volume: Vol.1017 Pages: 776-781

    • DOI

      10.4028/www.scientific.net/amr.1017.776

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Effect of Ultrasonic EDM on Machinability of Coarse PCD2013

    • Author(s)
      M.Iwai S.Ninomiya Z.Zhou K.Suzuki
    • Journal Title

      PCD Advanced Materials Research

      Volume: 797 Pages: 362-367

    • DOI

      10.4028/www.scientific.net/amr.797.362

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] 超音波放電加工による多結晶ダイヤモンド焼結体の細孔加工2016

    • Author(s)
      二ノ宮進一,塩島亜木斗,藍立明, 鈴木清
    • Organizer
      2016年度精密工学会春季大会学術講演会
    • Place of Presentation
      東京理科大学(千葉県・野田市)
    • Year and Date
      2016-03-15
    • Related Report
      2015 Annual Research Report
  • [Presentation] PCDの加工技術と応用2015

    • Author(s)
      二ノ宮進一
    • Organizer
      塑性加工学会北関東・信越支部第1回技術講演会
    • Place of Presentation
      日本工業大学(埼玉県南埼玉郡)
    • Year and Date
      2015-05-13
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] PCDセグメント回転工具による超硬合金の放電研削逐次加工2015

    • Author(s)
      二ノ宮進一,古賀文雄,鈴木清
    • Organizer
      2015年度精密工学会春季大会学術講演会
    • Place of Presentation
      東洋大学(東京都)
    • Year and Date
      2015-03-18
    • Related Report
      2014 Research-status Report
  • [Presentation] 導電性多結晶ダイヤモンド焼結体(EC-PCD)のワイヤカット放電加工に関する研究2014

    • Author(s)
      野地駿輔, 二ノ宮進一, 岩井学, ウィリアムチェン, 鈴木清
    • Organizer
      2014年度砥粒加工学会学術講演会
    • Place of Presentation
      岩手大学(岩手県)
    • Year and Date
      2014-09-13
    • Related Report
      2014 Research-status Report
  • [Presentation] PCDの超音波放電加工における振動モードの影響

    • Author(s)
      岩井学,二ノ宮進一,鈴木清
    • Organizer
      砥粒加工学会学術講演会
    • Place of Presentation
      日本大学駿河台キャンパス
    • Related Report
      2013 Research-status Report
  • [Presentation] PCDの精密加工技術の展開

    • Author(s)
      二ノ宮進一
    • Organizer
      砥粒加工学会 第50回次世代固定砥粒加工プロセス専門委員会
    • Place of Presentation
      上智大学四谷キャンパス
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] PCD工具による超硬金型の精密加工と関連技術

    • Author(s)
      二ノ宮進一
    • Organizer
      システム制御情報学会 第16回サステイナブル・フレキシブル・オートメーション研究分科会
    • Place of Presentation
      ㈱新日本テック本社(大阪)
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] PCD活用技術(PCD工具とPCDワーク)

    • Author(s)
      二ノ宮進一
    • Organizer
      精密工学会 第34回マイクロ生産機械システム専門委員会
    • Place of Presentation
      産業技術総合研究所 臨海副都心センター別館
    • Related Report
      2013 Research-status Report
    • Invited

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Published: 2014-07-25   Modified: 2019-07-29  

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