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Fabrication of functional surface by ultra-precision cutting of mold materials for plastic injection molding

Research Project

Project/Area Number 19K04127
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 18020:Manufacturing and production engineering-related
Research InstitutionKanazawa Institute of Technology (2021)
Kumamoto University (2019-2020)

Principal Investigator

Sakamoto Shigehiko  金沢工業大学, 工学部, 教授 (00315285)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsバニシング加工 / ステンレス鋼 / マルテンサイト変態 / 高硬度 / キューブ加工 / 硬度 / 射出成形用金型材料 / 焼入れ鋼 / 難削材 / 高機能性表面 / 超精密切削
Outline of Research at the Start

金属材料との代替品としてプラスチック樹脂の成形製品は、多くの産業で活用されている。強化繊維を含む射出成形用金型材料として、ステンレス鋼や焼入れ鋼が用いられ、成形品の高精度化に対応して、金型加工のナノメートル・オーダーでの仕上げ精度が要求されている。金型表面は、形状精度に加えて、耐摩耗性と耐腐蝕性度の高機能表面を持つことが必要となる。そこで、本研究では射出成形用金型材料に対する超精密切削でのナノメートル・オーダーの仕上げ面創成に加えて、ファイバーによる摩耗を防ぐための耐摩耗性、酸化を防止するための耐腐蝕性を高める高機能性表面を構築する加工法を目指し、新しい概念の難削材切削理論を提案する。

Outline of Final Research Achievements

For austenitic stainless steel SUS304, it was found that burnishing finish machining, in which the depth of cut is reduced and low speed machining is performed, can build up martensitic phase on the machined finished surface and increase surface hardness. The properties of the machined surface layer confirmed that the austenite phase transformed to martensite phase. It is considered that the vanishing ultra-precision machining will lead not only to the creation of a more precise machined surface finish, but also to a machining technology to construct a high-functional hardened surface finish.

Academic Significance and Societal Importance of the Research Achievements

バニシング仕上げ加工ではMQLによる圧縮空気を供給して加工していたため、加工中の温度上昇による影響よりも、機械的な応力による加工誘起マルテンサイト変態が生じたと推察される。工具姿勢を任意に変えることができる5軸マシニングセンタでの加工において、微小切り込みによる高精度な加工仕上げ面を創成することは、機能性表面を生成して高強度かつ耐腐食性の優れた製品づくりに役立てられる。立方体に異なる姿勢で切削加工を行うキューブ加工を実施することで、加工面への影響を評価することも可能と言える。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (10 results)

All 2021 2020 2019

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (8 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] Study on the influence of geometric errors in rotary axes on cubic-machining test considering the workpiece coordinate system2021

    • Author(s)
      Li Zongze、Sato Ryuta、Shirase Keiichi、Sakamoto Shigehiko
    • Journal Title

      Precision Engineering

      Volume: 71 Pages: 36-46

    • DOI

      10.1016/j.precisioneng.2021.02.011

    • NAID

      120007097052

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Influence of Tool Length and Profile Errors on the Inaccuracy of Cubic-Machining Test Results2021

    • Author(s)
      Li Zongze、Ogata Hiroki、Sato Ryuta、Shirase Keiichi、Sakamoto Shigehiko
    • Journal Title

      Journal of Manufacturing and Materials Processing

      Volume: 5 Issue: 2 Pages: 51-51

    • DOI

      10.3390/jmmp5020051

    • NAID

      120007115797

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Influence of Tool Length and Profile Errors on Cubic-machining Test Accuracy2021

    • Author(s)
      Zongze LI, Hiroki OGATA, Ryuta SATO, Keiichi SHIRASE, Shigehiko SAKAMOTO
    • Organizer
      Proceedings of the 10th International Conference on Leading Edge Manufacturing in 21st Century (LEM21)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Accuracy evaluation method on the five-axis machining centers by Square 3x3 machining2020

    • Author(s)
      Shigehiko SAKAMOTO, Atsushi YOKOYAMA, Kazumasa NAKAYASU, Toshihiro SUZUKI, Shinji KOIKE, Ryuta SATO
    • Organizer
      Proceedings of the 18th International Conference on Precision Engineering (ICPE2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Simulation of Cubic-machining Tests by Five-axis Machining Center with the Consideration of Workpiece Coordinate System2020

    • Author(s)
      Zongze LI, Ryuta SATO, Keiichi SHIRASE, Shigehiko SAKAMOTO
    • Organizer
      Proceedings of the 18th International Conference on Precision Engineering (ICPE2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Error Analysis By Square 3X3 Machining Method For Five-Axis Machining Centers2020

    • Author(s)
      Shigehiko SAKAMOTO, Atsushi YOKOYAMA, Kazumasa NAKAYASU, Toshihiro SUZUKI, Shinji KOIKE
    • Organizer
      Proceedings of the JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing (LEMP2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 正方形3x3加工法による5軸マシニングセンタの精度評価に関する研究2020

    • Author(s)
      坂本重彦、鈴木敏弘、中安和正
    • Organizer
      2020年度 精密工学会 春季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 多軸制御工作機械の同軸度に関する定義法2019

    • Author(s)
      坂本重彦、横山惇史、宮下宗仁、宮野雅之、鈴木敏弘、小池伸二
    • Organizer
      2019年度 精密工学会中国四国支部・九州支部 佐世保地方講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Square 3x3 machining method for accuracy evaluation of five-axis machining centers2019

    • Author(s)
      Shigehiko Sakamoto, Toshihiro Suzuki, Kazumasa Nakayasu and Shinji Koike
    • Organizer
      8th International Conference of Asian Society for Precision Engineering and Nanotechnology (ASPEN 2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 多軸マシニングセンタにおけるロータリテーブルの組立誤差に関する精度解析2019

    • Author(s)
      坂本 重彦、長野 広明、宮下 宗仁、宮野 雅之、鈴木 敏弘、小池 伸二
    • Organizer
      日本機械学会第 13 回生産加工・工作機械部門講演会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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