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Study on an innovative deburring method of resin injection molded article using underwater shock wave and microbubbles

Research Project

Project/Area Number 17K18066
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Production engineering/Processing studies
Fluid engineering
Research InstitutionSaitama Institute of Technology

Principal Investigator

Koita Taketoshi  埼玉工業大学, 工学部, 講師 (00750192)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords衝撃波 / マイクロバブル / 水中放電 / 破砕 / バリ取り / 射出成形 / 成形加工 / 放電
Outline of Final Research Achievements

The purpose of this study is to develop the high efficiency deburring method for polystyrene (PS) burr on the resin injection molding by the underwater shock wave loading inducued by the electrical discharge to the burr attached with the microbubbles. The optimum radius of microbubble subjected by the underwater shock wave causing the disintegration of PS burr was researched theoritically. The fragmentation of PS thin plate attached with the microbubbles simulating the burr by the underwater shock wave loading was visualized. We clarified the optimum conditions causing the fragmentation was that the microbubble was attached to the bottome of PS plate setin the water that was the water-backed plate moddel from the visualization results. From these results, the deburring method using the microbubbles subjected to the underwater shock wave loading was established.

Academic Significance and Societal Importance of the Research Achievements

本研究はマイクロバブル工学的応用と衝撃波工学を融合し,バリ加工技術に応用する学術的特徴を持つ.本研究の衝撃波バリ破砕加工法は従来の超音波バリ取り法よりも高圧破砕を行うため,バリ取り加工時間の短縮が可能となる.マイクロバブルを射出成形品に付着させるため,同時多数かつ選択的バリ破砕が可能となる.よって,バリ取り技術の画期的イノベーションをもたらす可能性が予想される.本研究は射出成形加工産業に対して加工生産性の向上に大きく貢献するものである.

Report

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

    (5 results)

All 2018 2017

All Presentation (4 results) (of which Int'l Joint Research: 2 results) Patent(Industrial Property Rights) (1 results)

  • [Presentation] Experimental Study of the Effect of Number of Discharge Times on Motion of Thin Resin Plate Attached Microbubbles Induced by Underwater Pulse Discharge2018

    • Author(s)
      Taketoshi Koita, Yousuke Seki
    • Organizer
      Fifteenth International Conference of Flow Dynamics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] マイクロバブル活用パルス放電誘起樹脂薄板破砕への放電回数の影響2018

    • Author(s)
      関 洋佑,小板 丈敏,吉田 拓矢,村山 隆弘,小松 優貴,渕上 天夏,山﨑 佑太
    • Organizer
      第37回数理科学講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] マイクロバブルと放電誘起水中爆発を用いた樹脂薄板破砕現象に関する基礎研究2018

    • Author(s)
      小池貴大,小板丈敏,孫明宇
    • Organizer
      日本機械学会関東学生会第57回学生員卒業研究発表講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] Experimental Study of the Effect of Microbubble Diameter on Fragmentation of Thin Resin Plate by Underwater Explosion2017

    • Author(s)
      Taketoshi Koita, Mingyu Sun, Takahiro Koike, Masaya Numata
    • Organizer
      Fourteenth International Conference on Flow Dynamics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] バリ取り装置及びバリ取り方法2018

    • Inventor(s)
      渋谷敬一, 小板丈敏
    • Industrial Property Rights Holder
      渋谷敬一, 小板丈敏
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2018-162148
    • Filing Date
      2018
    • Related Report
      2018 Annual Research Report

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Published: 2017-04-28   Modified: 2020-03-30  

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