FORMING AND WORKING METHOD OF METALLIC PLATE MATERIAL

摘要

PURPOSE:To enable considerable economization of a material by producing a material to be formed from a metallic plate having the size smaller than the size of the region to be worked. CONSTITUTION:A titled method consists of a stage for punching a hole part 20 to a metallic plate 191 having a prescribed width, a stage for pressing the end face of the part 20 with a press die and expanding the width thereof as shown by an arrow 23 and a stage for forming and working the region to be worked included in the expanded part 192 and yielding a material to be worked having the width larger than the prescribed width of the metallic plate material 191.