发明名称 DIE AND FORMING METHOD FOR PRESS FORMING OUTER PERIPHERAL BEAD
摘要 PROBLEM TO BE SOLVED: To provide a press forming die and a forming method of an outer peripheral bead reducing a number of processes and preventing generation of a crack in the case of forming a product having a bead on the outer periphery of a press forming die and a forming method of the outer peripheral bead. SOLUTION: The method consists of a first process to press form a deep drawing part 11, a second process to draw a lower outer periphery of the deep drawing part 11 into a two stepped shape and a third process to press the drawing part 11 into a section formed with the two stepped shape so as to form a bead 12 to the lower outer periphery of the deep drawing part 11 by using the excess stock generated in pressing.
申请公布号 JP2001293524(A) 申请公布日期 2001.10.23
申请号 JP20000115818 申请日期 2000.04.11
申请人 KOJIMA PRESS CO LTD 发明人 KITAI EIJI
分类号 B21D24/04;B21D22/22;B21D22/26;B21D37/00;(IPC1-7):B21D24/04 主分类号 B21D24/04
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