METHOD FOR PRODUCING FORMED PRODUCT, DIE FOR FORGING FORMED PRODUCT, FORMED PRODUCT AND FORGING PRODUCTION SYSTEM

摘要

PROBLEM TO BE SOLVED: To improve the yield on a producing system by reducing the defective product in the visual examination.;SOLUTION: In a method for producing a formed product, by which the formed product provided with a cylindrical or columnar center part 92 and at least an enlarged diameter part continued from this center part 92 is formed and larger than the center part in the plane view from a preformed material 90, when the preformed material 90 is set in a formed cavity 4 surrounded with an upper die 2 and a lower die 3, in the preformed material 90, the center portion 920 for forming to the center part after forming, is abutted on the lower die 3 so as to form a prescribed gap L1 in the push-out direction at the gap between the enlarged diameter portion 910 for forming the enlarged diameter part after forming and the lower die 3, and a process for producing the formed product by pushing out the preformed material 90 with the upper die from the above setting state, is contained.;COPYRIGHT: (C)2006,JPO&NCIPI