| 摘要 |
PROBLEM TO BE SOLVED: To provide a punch die having a punch tip, which is able to reduce its changing time, to improve its durability, to improve its stiffness, to manufacture a narrow product, and to easily perform the centering machining. SOLUTION: A clamper 4 and a punch tip 3 are inserted in an adjoining state into a groove 5 formed on the lower surface 31A of a punch body 31. The punch tip 3 is fixed to the groove 5 by being pushed by means of the clamper 4 tightened to the groove 5 from the outside by a required tightening means 10. One side of the groove is a tilting surface, and a mating tilting surface at one side of the clamper abuts against this tilting surface. The other side of the clamper is a tilting surface having a small tilting angle in the opposite direction, and the mating tilting surface having the small tilting angle at one side of the punch tip abuts against this tilting surface having the small tilting angle. The other side of the punch tip is a vertical surface, and abuts against the vertical surface at the other side of the groove. COPYRIGHT: (C)2004,JPO
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