Surface finishing of electrically conductive diamond tool by electrochemical machining

• Project/Area Number: 24560140
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Production engineering/Processing studies
• Research Institution: Toyama Prefectural University
• Principal Investigator: IWAI Manabu 富山県立大学, 工学部, 准教授 (30363873)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 電解加工 / ダイヤモンド工具 / 導電性ダイヤモンド / CVDダイヤモンド膜 / PCD / 表面粗さ / Electrolytic machining / Diamond tool / Electrically conductive / CVD diamond film / Surface finishing

Outline of Final Research Achievements

This study deals with a new surface finishing method of electrically conductive diamond materials. This method has two advantageous features of the electrolytic machining in addition to the general view that a better surface roughness could be obtained. One of those features is that no higher heat is generated at the machining point. This can eliminate a risk of the film delamination in the case where a workpiece is the CVD diamond coated tool. The other is that a wider machining gap is available between an electrode and a workpiece. This was thought to allow the electrolytic machining to be applied to a tool with a complex shape such as a drill and an endmill. From the results of electrolytic machining for the electrically conductive diamond materials, it was found that the surface of the electrically conductive diamond could be smoothened enough by electrolytic machining though relatively long period of time was required.

Research Products

• [Journal Article] Material Properties of a New PCD Made of Boron Doped Diamond Particles (2014)
  • 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
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Dynamic Friction Polishing of Diamond utilizing High Reactive Metallic Tools (2014)
  • Author(s): W.Chen, M.Iwai, K.Suzuki
  • Journal Title: Advanced Materials Research Volume: 1017 Pages: 160-165
  • DOI: 10.4028/www.scientific.net/amr.1017.160
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Effect of Ultrasonic EDM on Machinability of Coarse PCD (2013)
  • 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
  • Peer Reviewed
• [Journal Article] Performance of Ultrasonic Electro-discharge Machining on Electrically Conductive PCD (2013)
  • Author(s): M.Iwai, Z.Zhou, T.Ueda, S.Ninomiya, K.Suzuki
  • Journal Title: Advanced Materials Research Volume: Vol.628 Pages: 101-106
  • DOI: 10.4028/www.scientific.net/amr.628.101
  • Peer Reviewed
• [Journal Article] EDM properties of EC-PCD Manufactured using Electrically Conductive Diamond Particles (2012)
  • Author(s): S.Ninomiya, M.Iwai, T.Takada, Z.Zhou, K.Suzuki
  • Journal Title: Key Engineering Materials Volume: Vol.516 Pages: 148-153
  • DOI: 10.4028/www.scientific.net/kem.516.148
  • Peer Reviewed
• [Journal Article] Effects of Ultrasonic Vibrations Given to an Electrode on the EDM Performance in Processing PCD (2012)
  • Author(s): K.Suzuki, T.Takada, Z.Zhou, T.Okamichi, M.Iwai, S.Ninomiya
  • Journal Title: Advanced Materials Research Volume: Vol.565 Pages: 394-399
  • DOI: 10.4028/www.scientific.net/amr.565.394
  • Peer Reviewed
• [Journal Article] Surface Finishing of Electrically Conductive Diamond tools by Electrolytic Machining (2012)
  • Author(s): M.Iwai, K.Suzuki
  • Journal Title: Advanced Materials Research Volume: Vol.565 Pages: 400-405
  • DOI: 10.4028/www.scientific.net/amr.565.400
  • Peer Reviewed
• [Presentation] 特定遷移金属電極によるPCDの高能率放電加工 (2015)
  • Author(s): 岩井学，橋本英明， 川崎智将，鈴木清
  • Organizer: 精密工学会春季大会学術講演会
  • Place of Presentation: 東洋大学
  • Year and Date: 2015-03-17 – 2015-03-19
• [Presentation] 電極加振法によるPCDの放電加工性能 (2014)
  • Author(s): 岩井学，橋本英明，陳偉恩，鈴木清
  • Organizer: 精密工学会北陸信越支部学術講演会
  • Place of Presentation: 富山県立大学
  • Year and Date: 2014-11-22
• [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: 砥粒加工学会学術講演会
  • Place of Presentation: 岩手大学
  • Year and Date: 2014-09-11 – 2014-09-13
• [Presentation] PCDの超音波加振放電加工における放電条件の影響 (2014)
  • Author(s): 岩井学，陳偉恩 ，鈴木清
  • Organizer: 砥粒加工学会学術講演会
  • Place of Presentation: 岩手大学
  • Year and Date: 2014-09-11 – 2014-09-13
• [Presentation] PCDの放電加工特性に及ぼす電極加振条件の影響－第１報：ピエゾ振動子による電極加振の効果 (2014)
  • Author(s): 岩井学，橋本英明， 川崎智将，陳偉恩， 鈴木清
  • Organizer: 砥粒加工学会学術講演会
  • Place of Presentation: 岩手大学
  • Year and Date: 2014-09-11 – 2014-09-13
• [Presentation] EDM properties of newly developed PCD made up of electrically conductive diamond particles (2013)
  • Author(s): M.Iwai S.Ninomiya K.Suzuki
  • Organizer: The Seventeenth CIRP Conference on Electro Physical and Chemical Machining (ISEM)
  • Place of Presentation: Leuven, Belgium
• [Presentation] Improvement of EDM properties of PCD with electrode vibrated by ultrasonic transducer (2013)
  • Author(s): M.Iwai S.Ninomiya K.Suzuki
  • Organizer: The Seventeenth CIRP Conference on Electro Physical and Chemical Machining (ISEM)
  • Place of Presentation: Leuven, Belgium
• [Presentation] PCDの超音波放電加工における振動モードの影響 (2013)
  • 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
• [Presentation] 超音波振動電極と交番電源の併用によるPCDの放電加工 (2013)
  • Author(s): 岩井学、木村正夫、 William Chen、 鈴木清
  • Organizer: 電気加工学会全国大会
  • Place of Presentation: 名古屋
• [Presentation] ボロンドープダイヤモンドを原料とするCo-PCDの放電加工特性 (2013)
  • Author(s): 岩井学，二ノ宮進一，鈴木清
  • Organizer: 2013年度精密工学会春季大会学術講演会
  • Place of Presentation: 東京工業大学（東京）
• [Presentation] 超音波振動付加電極によるPCDの高能率放電加工 (2012)
  • Author(s): 二ノ宮進一，岡道拓也，周志容，臼井翔太，岩井学，鈴木清
  • Organizer: 2012年度砥粒加工学会学術講演会
  • Place of Presentation: 同志社大学（京都）
• [Presentation] PCDの放電加工における超音波振動付加電極の効果 (2012)
  • Author(s): 岩井学，周志容，二ノ宮進一，鈴木清
  • Organizer: 電気加工学会全国大会(2012)
  • Place of Presentation: 西日本総合展示場（北九州市小倉）