发明名称 |
Verfahren zur Herstellung von Stahlkugeln für Wälzlager |
摘要 |
A method of manufacturing a steel ball for a rolling bearing, said method comprising: a molding step of forming a steel wire cut at a predetermined length into a raw ball having a band portion by a pair of molding forms having respectively hemispherical concave portions and relief grooves in peripheries of said concave portions on their respective opposing faces, said band portion being formed on a surface of said raw ball along said relief grooves by compressing said steel wire by said molding forms in a state in which both ends of said steel wire are sandwiched between said concave portions; and a tumbler working step of removing said band portion from the surface of the raw ball by tumbling. <IMAGE> |
申请公布号 |
DE60204188(D1) |
申请公布日期 |
2005.06.23 |
申请号 |
DE2002604188 |
申请日期 |
2002.06.26 |
申请人 |
KOYO SEIKO CO., LTD. |
发明人 |
FUJITA, YOSHIKI;TAZUMI, HAJIME;NISHIKITA, KAZUYUKI;YOSHIDA, HIDEJI |
分类号 |
B21K1/02;B23P15/00;B24B11/02;B24B31/02;F16C33/32;(IPC1-7):B23P15/00 |
主分类号 |
B21K1/02 |
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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