| 摘要 |
PROBLEM TO BE SOLVED: To provide a punch die in which a punch tip can be attached to and detached from a punch body without using tools and the life of the punch body is prolonged. SOLUTION: The punch tip 5 is freely attachable to and detachable from a fitting hole 25 provided in the distal end part of the punch body 23, and a engaging hole 27 formed in a radial direction of the punch body and disposed in a direction crossing with the axial center of the punch body 23 is provided on the side of the distal end part of the punch body 23. When a locking part 33 provided on a locking piece 29 which is fitted into the fitting hole 27 freely slidably is in the state of being immersed in the inside of the fitting hole 25, the punch tip 5 is attached to and detached from the fitting hole 25 and, when the punch tip 5 is in the state of being fitted into the fitting hole 25, the punch tip 5 is fixed to the punch body 23 by projecting the locking part 33 provided on the locking piece 29 toward the fitting hole 25 and engaging with an engaging recessed part 5C provided on the punch tip 5. COPYRIGHT: (C)2006,JPO&NCIPI
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