| 摘要 |
PROBLEM TO BE SOLVED: To provide a drawing die for generating blank holding force for checking the generation of wrinkles and cracks between a pad and a die without using a cushion on the outside of a die set and securing stroke height.SOLUTION: The die 14 is mounted to the die set 12 of an upper die of the drawing die 10, and a punch 22 and a pad 24 are mounted to the die set 20 of a lower die. On the die set 12 of the upper die, an approximately rectangular lock cam 30 which is engaged freely movably in the lateral direction is arranged on the outside in the lateral direction of the die 14 and a recessed part 3 in which the die 14 and the pad 24 are inserted is formed on the side face facing to the die 14 of the lock cam 30. On the die set 20 of the lower die, a cam driver 40 which moves the lock cam 30 to the inside in the lateral direction and a release driver 46 which returns the lock cam 30 to the original position are arranged. |
