发明名称 |
BEARING UNIT FOR SUPPORTING WHEEL AND ITS MANUFACTURING METHOD |
摘要 |
PROBLEM TO BE SOLVED: To realize a structure capable of sufficiently restraining deterioration of flatness of an outside surface of a mounting flange 15 in press-fitting a male serration 18a formed on an outer peripheral surface of a stud 9 in a female serration 29 formed on an inner peripheral surface of a mounting hole 16a and to realize a manufacturing method capable of improving shape precision and surface precision of the female serration 29 and not producing chips in forming this female serration 29. SOLUTION: A dimensional relation forming a clearance between each of addenda and each of bottoms of both of the serration 29, 18a is adopted in a state of press-fitting the male serration 18a in the female serration 29. The female serration 29 is formed by plastically deforming the inner peripheral surface of a part in which a serration punch is pushed by pushing the serration punch into an intermediate part of a circular hole to be a prepared hole of the mounting hole 16a. COPYRIGHT: (C)2007,JPO&INPIT
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申请公布号 |
JP2006327289(A) |
申请公布日期 |
2006.12.07 |
申请号 |
JP20050150434 |
申请日期 |
2005.05.24 |
申请人 |
NSK LTD |
发明人 |
KOBAYASHI KAZUTO;OTSUKA SEIJI;YASUDA YUTAKA |
分类号 |
B60B27/00;B60B3/16;F16B35/04;F16C19/18;F16D65/12 |
主分类号 |
B60B27/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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