发明名称 |
Multi-stepped pulley, method of manufacturing same, and apparatus for manufacturing same |
摘要 |
A multi-stepped pulley, and a method and apparatus for manufacturing the same, wherein the mechanical strength is increased while keeping down an increase of mass and a rise of manufacturing costs by pressing against portions of a surface of a hollow metal material having a circular cross-section corresponding to a connection portion of a plurality of pulleys by pressing rollers and simultaneously crushing the material in an axial direction so as to integrally form first and second rims, first and second webs, and a connection portion thereof.
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申请公布号 |
US6071205(A) |
申请公布日期 |
2000.06.06 |
申请号 |
US19980076739 |
申请日期 |
1998.05.13 |
申请人 |
DENSO CORPORATION |
发明人 |
OHNO, TETUO;SHOHARA, HIROSHI;KASUYA, YASUJI;TABUCHI, YASUO;KINOSHITA, MASAHIRO |
分类号 |
B21D22/16;B21D53/26;B21D53/30;B21H1/04;B21H9/00;F16H55/44;(IPC1-7):F16H55/49 |
主分类号 |
B21D22/16 |
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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