| Project/Area Number |
14550103
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
機械工作・生産工学
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| Research Institution | The University of Shiga Prefecture |
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Principal Investigator |
NAKAGAWA Heisaburo University of Shiga Prefecture, Dept.of Mechanical Systems Engineering school of Engineering, Professor, 工学部機械システム工学科, 教授 (50033345)
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| Co-Investigator(Kenkyū-buntansha) |
HIROGAKI Toshiki Doshisha University, Dept.of Mechanical Engineering, Associate Professor, 工学部, 助教授 (80275172)
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| Project Period (FY) |
2002 – 2004
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| Project Status |
Completed (Fiscal Year 2004)
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| Budget Amount *help |
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2004: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2003: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2002: ¥1,700,000 (Direct Cost: ¥1,700,000)
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| Keywords | tool life / tool wear / endmilling / hardened steels / die molds / coating thin film / 焼入れ / 金属組織 / 高速加工 / ボールエンドミル / ボンバード / 金型組織 / チッピング / 溶着 |
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| Research Abstract |
This study deals with end-milling hardened steels for die and molds using (Al,Ti)N-coated cutter. We researched the characteristics of end-milling low- and high-alloy steels, hardened up to HRC53. It is clear that the life of a tool depends on three different phenomena : abrasive wear, scratching wear by large grain carbide, and adhesion, when end-milling various kinds of hardened steels for die and molds. In high speed end-milling, most of the heat generated is borne away by chips in the cutting process. It is confirmed that little increase in tool temperature makes it feasible to achieve long tool life in high speed end-milling.
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