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5-axis Abrasive-assisted Electrochemical Jet Machining for Surface-processing of Difficult-to-machine Materials

Research Project

Project/Area Number 16K17992
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Production engineering/Processing studies
Research InstitutionThe University of Tokyo

Principal Investigator

Zhao Yonghua  東京大学, 大学院工学系研究科(工学部), 助教 (90759052)

Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords5-axis EJM / Freeform surface / Freeform surfaces / ECM / Electrolyte jet / 5-axis / Corner machining / electrolyte flow field / Simulation / Abrasive machining / Surface processing / Difficult-to-machine / 5-axis machine
Outline of Final Research Achievements

Five-axis Jet-ECM can provide infinite possibilities in the machining of part sizes and shapes. However, this technique has not been developed. In this research, the characteristics and principles of the 5-axis Jet-ECM process were investigated through both experiments and simulations. It is found that the jet angle relative to the workpiece surface had significant influences on the Jet-ECM results. On the other hand, the jet direction had little influence on Jet-ECM. The performances of Jet-ECM of corners is greatly affected by the corner angles and geometric shapes. Special attentions must be given to the corner geometries in practice. Multiphysics-coupled simulation of Jet-ECM suggested that the electrolyte flow and current density distribution in the gap was significantly affected by the jet angle, which was verified by experiments. To achieve stable and constant machining results, the jet angle relative to the workpiece surface, usually perpendicular, must be kept constant.

Report

(3 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • Research Products

    (3 results)

All 2017

All Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] スリットノズルを使用した電解液ジェットによる曲面加工2017

    • Author(s)
      趙 永華、国枝正典
    • Organizer
      一般社団法人 電気加工学会2017年度全国大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Influences of electrolyte jet posture and workpiece geometry on performances of electrolyte jet machining2017

    • Author(s)
      Yonghua Zhao, Masanori Kunieda
    • Organizer
      The 7th International conference of Asian Society for Precision Engineering and Nanotechnology (ASPEN2017)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 電解液ジェット加工による任意曲面への電解加工2017

    • Author(s)
      趙 永華、国枝正典
    • Organizer
      精密工学会
    • Place of Presentation
      東京都 慶應義塾大学 矢上キャンパス
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2019-03-29  

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