(1) For the cross wedge rolling process to form the driving spiral bevel gear blank, can we consider selecting the blank with smaller diameter for forming, the cone part adopts aggregate forming, and the shaft adopts multi wedge synchronous rolling to form the first-order shaft, so as to avoid the large defects of the shaft caused by the excessive repeated rubbing of the workpiece due to the secondary wedging.
(2) In the improved scheme of cross wedge rolling, changing the right angle side end face of the wedge into the inclined side end face has a good forming effect, but the specific inclination angle is easy, which has not been studied due to time constraints.
(3) In the follow-up of cross wedge rolling vertical forging process, it can also be considered to roll the excessive part of the cross-section of the billet step shaft into an inclined step instead of the right angle step in the study. The purpose is to reduce the damage of the wedge edge to the internal grain structure of the rolled piece and reduce the stress concentration at the right angle step.
(4) The forming process of warm extrusion warm forging is not studied in the extrusion vertical forging process. The feasibility of forming driving spiral bevel gear blank by warm extrusion warm forging can be considered in the follow-up.