| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a split punch which does not generate a step between a main punch and an auxiliary punch.SOLUTION: A receiving portion 33 is provided in a main punch 17, and a received portion 34 resting on the receiving portion 33 is provided in an auxiliary punch 18. Upon receiving a molding reaction force, the received portion 34 is supported by the receiving portion 33. An angleαbetween a receiving surface and a mating surface of the receiving portion 33 is set to an acute angle. Because the main punch and auxiliary punch are integrated and become one rigid body, a step is not generated between the main punch and auxiliary punch, or even when the step is generated, it becomes insignificant.</p> |
