发明名称 |
VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG EINER SCHRAUBENFEDER UND SCHRAUBENFEDER |
摘要 |
PCT No. PCT/FR96/01479 Sec. 371 Date Jun. 12, 1997 Sec. 102(e) Date Jun. 12, 1997 PCT Filed Sep. 23, 1996 PCT Pub. No. WO97/11201 PCT Pub. Date Mar. 27, 1997The invention relates to a method for making arcuate coil springs from straight coil springs and particularly includes a phase of bending the straight springs during a heat treatment, which method provides exceptional results in that for the bending, a lasting arcuate shape is imparted to the springs substantially by giving the springs the shape of a portion of a turn to provide the spring with a counter-defect prior to the subsequent finishing steps. The invention also relates to a spring manufactured according to such a method and to devices for carrying out the method which include devices for holding at least the end coils of the springs in staggered positions, which devices may include a holder provided with fastening devices. |
申请公布号 |
DE69619519(T2) |
申请公布日期 |
2002.10.10 |
申请号 |
DE1996619519T |
申请日期 |
1996.09.23 |
申请人 |
ALLEVARD REJNA AUTOSUSPENSIONS, SAINT-CLOUD |
发明人 |
COFRADE, STANISLAS;BOUDIER, PASCAL |
分类号 |
B21F35/00;C21D9/02;F16F1/06;(IPC1-7):C21D9/02 |
主分类号 |
B21F35/00 |
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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