| 发明名称 |
Leakproof closure of a bore in a malleable aluminum alloy workpiece |
| 摘要 |
Bore (11) closure is performed with a punch (13) of circular cross-section, operating on two laterally offset points (a, b) at the mouth of the bore. The two punch strokes are identical in stroke depth.
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| 申请公布号 |
DE19746840(A1) |
申请公布日期 |
1999.05.06 |
| 申请号 |
DE19971046840 |
申请日期 |
1997.10.23 |
| 申请人 |
ROBERT BOSCH GMBH, 70469 STUTTGART, DE |
发明人 |
WOLF, MARKUS, 87437 KEMPTEN, DE |
| 分类号 |
B21J5/00;B21J5/06;B21K21/00;B21K21/14;(IPC1-7):B21J5/06;B23P17/00 |
主分类号 |
B21J5/00 |
| 代理机构 |
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代理人 |
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