Patent ID: 6161409
Filing Date: 2000-12-19
Classification: B21D,B21H,Y10T

Abstract:
A method of producing an externally toothed gear part from a metallic workpiece blank, wherein the gear part has a hub face with teeth projecting outward thereon, the method comprising steps of:providing a workpiece;using a flanging roller to provide a thickened margin in the workpiece;moving a toothed roller, which is mounted so as to be freely rotatable, into a fixed position in a radial direction toward a spindle/presetting-element axis(x--x);subsequently using two pressure rollers to press flat the thickened margin of the workpiece; andforming teeth;wherein the teeth are formed by flowing of the material of the metallic workpiece into the toothed roller, the flowing of the material being caused by the workpiece being pressed flat.