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On the machine estimation of Cutting fluid and prediction of surface roughness by micro feed milling

Research Project

Project/Area Number 19K04149
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 18040:Machine elements and tribology-related
Research InstitutionHiroshima University

Principal Investigator

TANAKA Ryutaro  広島大学, 先進理工系科学研究科(工), 准教授 (60361979)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2020: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2019: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords切削加工 / 切削油剤 / 仕上げ面粗さ / 工具摩耗 / tool wear / cutting fluid / uncut chip thickness / edge roundness / lubricant effect / cooling effect / 仕上げ面生成領域 / 転写精度 / 刃先丸み / 摩擦係数 / 切削温度 / 仕上面粗さ
Outline of Research at the Start

アップカットでは切り取り厚さが0から始まり弾性接触域,塑性接触域,切削域と状態が変化する.x-y座標系で測定した弾性接触域の切削抵抗から回転している工具の接線方向Fcとこれに垂直な半径方向の成分Fnを求めμMFM=Fc/Fnと定義する.それぞれの切削条件,特に切削速度により切削油剤の各効果が詳細に検討されてこなかった.この原因として考えられるのは,簡単に入手できる切削油剤のデータが常温におけるものに限られることである.そこで,研究者自身が取得した切削油剤の特性値を示しながら議論することが現象のより深い解明につながるであろうし,本手法がその標準的な評価法となることに期待したい.

Outline of Final Research Achievements

Cutting force just after start of one cut in up-cut was used to estimate the friction characteristic of cutting fluid at contact between tool and work material. When the depth of cut was around edge roundness, the cutting fluid of lower coefficient of friction easily occurred stick-slip, and the higher transfer error occurred at the cutting conditions where the relatively clear feed mark formed. The lower coefficient of friction cutting flued caused larger tool wear at the surface formation area. The depth of deformed work material when cutting fluid used was smaller than that in dry cutting. Therefore, it was thought as a one of reason of increase of tool wear that the higher hardness work material rubbed the took surface.

Academic Significance and Societal Importance of the Research Achievements

ユーザーが入手可能な切削油剤の特性値は常温におけるデータであることがほとんどであるため,切削条件による油剤の効果が変化する理由を説明できない場合が少なくないが,提案した手法は工具動力計さえあれば切削油剤にユーザーが切削状態に近い状態で特性を評価できる.得られた成果は,工具寿命の判断に用いられる横逃げ面摩耗の抑制効果が高い油剤が,刃先形状の転写精度の低下や仕上げ面生成領域の工具摩耗を促進させる可能性も示しており,最適な油剤の特性を見極める際に,提案した手法の活用が期待できる.

Report

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

    (7 results)

All 2021 2020 2019

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results) Presentation (5 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Performance evaluation method for cutting fluids using cutting force in micro-feed end milling2020

    • Author(s)
      Tomohiko Kitamura, Ryutaro Tanaka, Yasuo Yamane, Katsuhiko Sekiya, Keiji Yamada
    • Journal Title

      Precision Engineering

      Volume: 62 Pages: 232-243

    • DOI

      10.1016/j.precisioneng.2019.12.007

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Tool wear mechanism in up-cut end milling of AISI 1050 at different feed rates2020

    • Author(s)
      Ryutaro TANAKA, Tai-Yi YEH, Kota MATSUDA, Katsuhiko SEKIYA and Keiji YAMADA
    • Journal Title

      Journal of Advanced Mechanical Design, Systems, and Manufacturing

      Volume: 14 Issue: 3 Pages: JAMDSM0042-JAMDSM0042

    • DOI

      10.1299/jamdsm.2020jamdsm0042

    • NAID

      130007823111

    • ISSN
      1881-3054
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 10th International Conference on Leading Edge Manufacturing Technologies in 21st Century, LEM 20212021

    • Author(s)
      Hayashida Takahide,Tanaka Ryutaro, Yamada Keiji, Sekiya Katsuhiko
    • Organizer
      Effect of lubricant on tool wear in finished surface formation area of rounded nosed tool
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 旋削加工におけるノーズ R 付き工具の仕上げ面生成領域の工具摩耗2020

    • Author(s)
      林田 孝秀, 田中隆太郎, 松田 孝太,關谷 克彦,山田 啓司
    • Organizer
      日本機械学会中国四国支部第58期総会・講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 送りマークが不明瞭な粗さ曲線における工具刃先転写誤差の算出2020

    • Author(s)
      今田晃樹, 田中隆太郎, 松田 孝太,關谷 克彦,山田 啓司
    • Organizer
      日本機械学会中国四国支部第58期総会・講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Influence of Friction Characteristic of Cutting Fluid Evaluated by Cutting Force in Micro Feed End Milling on Surface Roughness2019

    • Author(s)
      Tai-Yi YEH, Ryutaro TANAKA, Kota MATSUDA, Katsuhiko SEKIYA and Keiji YAMADA
    • Organizer
      The 8th International Conference on Manufacturing, Machine Design and Tribology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of Feed Rate on Tool Wear in Up Cut End Milling of AISI 1050 at Different Cutting Speed2019

    • Author(s)
      Ryutaro TANAKA, Tai-Yi YEH, Kota MATSUDA, Katsuhiko SEKIYA and Keiji YAMADA
    • Organizer
      The 8th International Conference on Manufacturing, Machine Design and Tribology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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

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