WORKING METHOD AND WORKING DEVICE FOR PRESS PARTS

摘要

PROBLEM TO BE SOLVED: To provide a working method and a working device capable of working the coaxiality with high precision and maintaining highly precise quality even in the mass production in press parts which requires the coaxiality of a boss part in the center of a motor bracket or the like and a flange outside diameter part. SOLUTION: Forming of center boss parts 1 and a flange outside diameter part 3 are worked in the same process. Even in the same process, the boss parts 1 to be a reference is worked beforehand, then a half-blanked working of the outer diameter 4 of the flange part is conducted after working of the boss part.