发明名称 |
Winding method for heat-treated wire with varying dia. - has central cylindrical wire section pre-curved before coiling, and end sections are coiled elastically |
摘要 |
The method is for the winding of coils having concentric windings, of heat-treated wire, esp. spring steel. The wire consists of bi-conical sequences with periodically changing dias. One sequence has a central cylindrical section with larger dia, with conical transfer sections on either side, extending into sections with smaller dias. Before coiling, the wire is pre-bent plastically in the central section, with a given radius of curvature (R1). The transfer and smaller dia. sections are coiled elastically. The central and non-cylindrical sections are pre-bend to a max. dia. dx. Below this dia, and in the end sections, coiling takes place elastically. USE/ADVANTAGE - Simple coiling process for heat treated wire with varying dia.
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申请公布号 |
DE4129172(A1) |
申请公布日期 |
1993.03.11 |
申请号 |
DE19914129172 |
申请日期 |
1991.09.03 |
申请人 |
SAAR-FEDERN GMBH, 6620 VOELKLINGEN, DE |
发明人 |
FROEHLKE, MANFRED, DR., 6682 OTTWEILER, DE |
分类号 |
B21F3/00;B21F3/02 |
主分类号 |
B21F3/00 |
代理机构 |
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