DIE AND MANUFACTURING METHOD OF CYLINDRICAL PRODUCT AND CYLINDRICAL PRODUCT

摘要

PROBLEM TO BE SOLVED: To provide a die in which a slug is not caught in a side cut die in simultaneously punching a peripheral wall of a cylindrical product from three directions. SOLUTION: Partition parts 13 which are formed integrally with a side cut die 11 by extending from the inner peripheral wall of the side cut die 11, are arranged so that space parts of the number 14 corresponding to the number of holes 12 for punching are demarcated in the side cut die 11.