发明名称 VERFAHREN ZUR HERSTELLUNG EINES WERKSTUECKES AUS EINEM LAENGLICHEN ROHLING ODER ZWISCHENPRODUKT
摘要 A long workpiece (2) with two end sections (5, 10) and a central section (3) lying between them which has a narrower cross-section than the end sections (5, 10), is fabricated from a blank (1) in such a way that only one part (3a) of the central section (3) is given, for example by machining, the final cross-sectional shape, and in such a way that the remaining part of the central section (3) receives a final cross-sectional shape by cold forming using a multi-part reducing mould (4). The part (3a) of the central section (3) which has its cross-section reduced first allows the mould parts (4a, 4b) of the multi-part reducing mould (4) to be placed around this part (3a), and the remaining part of the central section (3) is then cold-pressed through the reducing mould (4). <IMAGE>
申请公布号 DE3816956(A1) 申请公布日期 1989.11.23
申请号 DE19883816956 申请日期 1988.05.18
申请人 HIRSCHVOGEL, MANFRED, DR.-ING., 8915 FUCHSTAL, DE 发明人 HIRSCHVOGEL, MANFRED, DR.-ING., 8915 FUCHSTAL, DE;KETTNER, PETER, 8911 DENKLINGEN, DE
分类号 B21C1/26;B21C1/16;B21C3/02;B21C3/12;B21C37/04;B23P15/00 主分类号 B21C1/26
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