| 摘要 |
PROBLEM TO BE SOLVED: To provide a stacked die for press capable of improving the durability and realizing the stacking with high accuracy, easy in manufacture and simple in structure. SOLUTION: A press die comprises an upper die part 1, a blank holder 2 and a lower die part 3, and a die 5 of the upper die part 1 and a punch 32 of the lower die part 3 are formed by stacking a large number of thin steel plates 7. Inserts 10, 11 and 34, 35 piercing the layer of the thin steel plates 7 are provided at the positions corresponding to the die 5 and the punch 32, and an insert 36 is further provided on the punch 32 to perform the forming of high accuracy by allowing each tip surface to form a pressing part. The inserts 34, 35 and 36 also plays the function of a reference pin. In addition, a die face plate 16 is provided on a highest layer of the die 5 to improve the durability against the ironing.
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