| 摘要 |
PURPOSE:To decrease the distance between punch parts and to enable the approach of punched holes to each other with a punch for a die by forming integrally a retainer part and the punch part and providing holes for insertion of a fastener and knock-pin to the retainer part. CONSTITUTION:A retainer part 10 and a punch part 11 to be fixed to a press die are integrally formed. A hole 12a for insertion of a knock-pin penetrating through both end faces 10b, 10c of the part 10 and a blinded hole 12b for insertion of a knock-pin opening to the end face 10c are provided to said retainer part. A hole 13 for insertion of a fastener such as a bolt penetrating through the part 10 is also provided. The end area of the part 10 is made small and the compact punch is formed by such mechanism. The formation of the punched holes in more proximity to each other is made possible. |
