2016 Fiscal Year Final Research Report
Deveropment of high-performance cutting to improve surface integrity
Project/Area Number |
26420063
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Production engineering/Processing studies
|
Research Institution | Chubu University |
Principal Investigator |
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Project Period (FY) |
2014-04-01 – 2017-03-31
|
Keywords | 切削 / 表面特性 / 残留応力 / 耐疲労性 |
Outline of Final Research Achievements |
It is well known that the compressive residual stress of a metal surface leads to an extension of fatigue life. However, the cut surface generally results in a tensile residual stress. Therefore, to improve the strength reliabilities of machine parts, we have developed a high compressive residual stress generation method that uses cutting. The main results of this study are as follows. (1)A high compressive residual stress that exceeds -1000 MPa was generated by cutting, and the resistance of the material to fatigue was significantly improved as a result. (2)Residual stress anisotropy was evident in the cut surface and the tool feed direction of the surface had a strong compressive residual stress tendency and was superior to the cutting direction in terms of resistance to fatigue.
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Free Research Field |
機械工作
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