6.10.3 b) Rolling with the cylindrical die method
When transverse rolling with the cylindrical die method, the rotationally symmetric blank is held in an axial direction between tooth tips. Two or three cylindrical dies (depending upon the method used) shape the gear teeth on the blank, moving in the same direction and at a constant rotation speed. The die teeth penetrate the workpiece by means of a radial shortening of the distance between the axes of the cylindrical dies. This infeed motion is controlled hydraulically or with a movable rolling die. The second cylindrical die is fixed. It must be possible to move the workpiece holding device in the direction of the infeed movement so that the blank to be centred during the deformation process. Another viable solution is rolling with a support guide.