OUTRUN WORKING AND DIE IN PUNCH PRESS,申请号JP19820126652-传众专利搜索

OUTRUN WORKING AND DIE IN PUNCH PRESS

申请公布号：JPS5919038(A)

申请号：JP19820126652

申请日期：1982.07.22

申请公布日期：1984.01.31

申请人：

AMADA:KK

发明人：NAITOU KINSHIROU

分类号：B21D28/10;B21D28/00;B21D28/34

主分类号：B21D28/10

摘要：PURPOSE:To work the periphery of additional hole neatly by producing an easily cut slack part by succeeding blanking on both sides of the tip of preceding blanking of a punch press, and making outrun working by succeeding blanking. CONSTITUTION:In a die 1 consisting of a die 3 having a square hole and a punch 5, corner clearances 15, 17 larger than other outer peripheral clearance 13 to the die 3 are provided at two corners 9, 11 in the direction of an outrun blanking of the punch 5 shown by the arrow 7. The outrun blanking of three steps A, B, C is performed using this die 1. The part corresponding to slack parts 23, 25 of the third step C directed to the center corresponding to two corner clearances 15, 17 of each steps are overlapped parts 19, 21 of the outrun blanking, and removed completely by succeeding blanking.