To provide a punch die in which directivity for mounting a punch tip to a punch body in the punch die is always constant.
In this punch die, a positioning/locking part 79 for positioning of a punch tip 73 to the punch body 65 is provided in one place and the positioning/locking part 79 is provided in a position separated from the center position of the punch tip 73. Furthermore, the punch body 65 is provided by screwing vertically adjustably on a punch driver 53 which is provided vertically movably in the upper part of a punch guide 43, the positioning/locking part 79 for performing the positioning of the punch tip 73 mounted attachably and detachably in the lower part of the punch body 65 is provided in two places and the positioning/locking parts 79 in these two places are provided in asymmetric positions centered in the center position of the punch tip 73. Furthermore, keys 71A, 71B for controlling the rotation of the punch body 65 to the punch guide 43 are provided in a plurality of places.
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Iwa Saki Kokuni
Akira Kurihara
Kawamata Sumio
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu