| 发明名称 |
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| 摘要 |
The invention describes a machine in which butterfly clamps (19) are punched out of steel strip and simultaneously bent, thus being fixed on fixing means (26) of a frame (31) of a spring core. …<??>The same tool is thus used both for punching out the clamps and for the bending process, i.e. the process of establishing a connection between the parts of the spring core. The machine is thus particularly economical in operation because, compared to the prior art, the separately punched-out butterfly clamps do not have to be inserted into a separate bending machine. |
| 申请公布号 |
DE3910939(C2) |
申请公布日期 |
1991.09.26 |
| 申请号 |
DE19893910939 |
申请日期 |
1989.04.05 |
| 申请人 |
SPUEHL AG, ST. GALLEN, CH |
发明人 |
KNOEPFEL, HANS, MASCH.-ING. (HTL), ROGGWIL, CH |
| 分类号 |
B21D28/00;B21D35/00;B21D53/36;B21F33/02;B21F33/04 |
主分类号 |
B21D28/00 |
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