Patent ID: 9441672
Filing Date: 2016-09-13
CPC Classification: B21D,F16C,Y10T

Claim Text:
1. A method for producing a holder, comprising: receiving an inner peripheral surface of at least a smaller-diameter portion of a working target article in which a flange portion is yet to be formed, by an outer peripheral surface of a receiving member inserted into the working target article, the working target article including the smaller-diameter portion, a larger-diameter portion, and an inclined portion that connects the smaller-diameter portion and the larger-diameter portion; receiving an outer peripheral surface of the smaller-diameter portion and an outer peripheral surface of the larger-diameter portion of the working target article, by a die placed on an outer peripheral side of the working target article; pressing, in the receiving state, an end portion of the working target article by a pressing member for flange portion formation; and forming the flange portion while a peripheral surface portion of a convex portion formed in the pressing member receives the end portion and applies an outward pressure to the end portion.