| Project/Area Number |
04650104
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
機械工作
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| Research Institution | Niigata University |
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Principal Investigator |
IWABE Hiroyasu Niigata University, Faculty of Eng. Associate Prof., 工学部, 助教授 (80018910)
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| Co-Investigator(Kenkyū-buntansha) |
YOKOYAMA Kazuhiro Niigata University, Faculty of Eng. Associate Prof., 工学部, 助教授 (00018673)
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| Project Period (FY) |
1992 – 1993
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| Project Status |
Completed (Fiscal Year 1993)
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| Budget Amount *help |
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1993: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1992: ¥1,600,000 (Direct Cost: ¥1,600,000)
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| Keywords | Scroll Shape Workpiece / End Milling / Finite Element Method / Working Accuracy / Machining Efficiency / Chip Area / 切削機構 |
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| Research Abstract |
This report deals with the establishment of high-accurate and high-efficient machining method of a scroll shape workpiece by numerical controlled machine tools. At first, the generating mechanism of working accuracy of a thin walled workpiece is analyzed by using a finite element method. Secondly, the machining program for a scroll shape workpiece within 0.2mum of interpolation error is developed. Finnaly, the three types of cutting method are proposed based on cutting mechanism of a helical edge and the effect are verified by cutting tests.
The main results are as follows.
(1)The load on nodes are calculated by the cutting force which is given by cutting tests.
(2)The deflection workpiece and tool by the load are calculated, and the predicted error which is relative displacement at a cutting edge generating surface that will be machined.
(3)Experimental values of working accuracy is almost coinsident to the predicted error.
(4)Three types of high-accurate and high-effective cutting methods for scroll shape workpiece are proposed, such as (i) the radial depth controll method, (ii) the feed controll method and (iii) the spindle revolution method.
(5)Working accuracy of machined surface are improved within almost (〕SY.+-.〔)10 mum by the methods disscussed before, and cutting time becomes one-half for an outer surface by the feed controll method.
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