2015 Fiscal Year Final Research Report
Development of an aerostatic spindle with more than 40 million rpm for ultraprecision machine tools
| 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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| 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 |
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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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| Free Research Field |
設計工学・機械機能要素・トライボロジー
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