Patent ID: 6343497
Filing Date: 2002-02-05
Classification: B21H,B21K,B23P,F16H,Y10T

Abstract:
A manufacturing apparatus of speed gear, comprising a collet chuck and a male cone to be inserted in the collet chuck, so as to expand the diameter of the collet chuck, for holding a shaft hole pierced at a center of a work gear, a tail stock for turning the work gear, through the collet chuck, around its shaft hole, a synchronizing gear disposed in the tail stock that turns together with the tail stock, a driven gear engaging with the synchronizing gear, and a rolling spindle on which are disposed rolling dies, wherein the work gear has speed gear teeth, rough-formed in advance on a speed gear section of the work gear, finish formed by the rolling dies turning in synchronization with the work gear, while turning the work gear around the shaft hole, through the synchronizing and driven gears.