Patent ID: 6536092
Filing Date: 2003-03-25
Classification: B21C,B21H,B21K,Y10T

Abstract:
A plastic processing method of a metal rod material, comprising the steps of:containing the rod material in a molding groove which is disposed in a mold for molding the metal rod material and which has at least one end wherein a sectional area of said molding groove is smaller than a sectional area of the rod material along a longitudinal direction of the rod material; pressing a rolling roller in contact with a mold surface having the molding groove, rolling/moving the rolling roller toward the end having the sectional area smaller than the sectional area of the rod material from the other end of the molding groove, and plastically deforming and molding the rod material along a shape of the molding groove by the rolling roller; and removing a burr formed of an excess material extruded out of the molding groove by the rolling roller during the plastic deformation.