Patent ID: 9610629
Date: 2017-04-04
CPC Classifications: B21H

Claim:
1. A gear rolling machine comprising: a plurality of cylindrical round dies disposed centering on a raw material, which is a workpiece, to roll the raw material from an outer circumference of the raw material; die-rotation driving means for driving to rotate the round dies; raw material supporting means for rotatably supporting the raw material; and push-in means for bringing the round dies close to each other from the outer circumference toward the raw material and pushing in the round dies while rotating the round dies in the same direction in synchronization with each other, the gear rolling machine further comprising: a taper-shaft swinging table that swings on a taper shaft turning around a Y axis orthogonal to a push-in direction of the round dies; a die table that swings on an inclined shaft turning around the push-in direction of the round dies on the taper-shaft swinging table; taper-shaft adjusting means for adjusting a swing angle of the taper-shaft swinging table on the taper shaft; inclined-shaft adjusting means for adjusting a swing angle of the die table on the inclined shaft; and the inclined-shaft adjusting means and the taper-shaft adjusting means are means for correcting a tooth trace and/or a tooth shape of a gear.