| 摘要 |
PURPOSE:To prevent the core shift of a dimple and a dimple hole, and the inclination of an element by dividing the upper die into three of a dimple die and the right and lift upper punches, aligning in advance the right and lift upper punches to the projecting part of the lower die and allowing the center lines to coincide with each other. CONSTITUTION:The center of a dimple die 12 is positioned so as to become the center of a projecting part 11a of the lower die 11. Subsequently, the dimple die 12 and the left and right upper punches 13, 14 are allowed to ascend as one body, and between the upper die 10 and the lower die 11, an element forming stock A is carried in and set. Next, an element 3 is formed by blanking such as allowing the upper die 10 to descend, etc., by a prescribed operation. In such a way, a core shift of a dimple 3a and a dimple 3b of the element 3 to be formed is obviated, and an inclination, etc., when many elements have been assembled are prevented.
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