| Project/Area Number |
25420099
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Design engineering/Machine functional elements/Tribology
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | 高速ミーリング / マイクロエンドミル / 空気静圧軸受 / スピンドル / 高速切削 / 小径ミリングカッタ / エアタービン駆動 / 動剛性 / 減衰性 / 数値計算 / マイクロミーリング / 静圧軸受 / 空気軸受 / 高速回転 / CFD / 慣性力 / 高速安定性 / 高速スピンドル |
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| Outline of Final Research Achievements |
Recently, high-speed micro-milling has attracted considerable attention for effectively manufacturing fine and precise machine components with lower cutting resistance. However, as the tool diameter is reduced, higher rotational speeds of the spindle become necessary for machining components at the optimal cutting speed. We propose a new machining method in which an end mill cutter is directly supported by aerostatic journal and thrust bearings, and driven by air turbines to achieve high rotational speeds. We found that the proposed micro end mill spindle with a 4 mm shank could rotate at 400,000 min-1 and cut grooves with depths of 30 um to 40 um on an aluminum alloy surface.
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