Wheel hub spinning forming die

The utility model discloses a wheel hub spinning forming die which is composed of a front section spinning forming die and a rear section spinning die which are connected in the axial direction in a centering mode. The peripheral surfaces of the front section spinning forming die and the rear section spinning die connected in the centering mode form a complete wheel hub profile. Centering positioning structures are arranged in the axes of the connecting ends of the front section spinning die and the rear section spinning die. The non-connecting ends of the front section spinning die and the rear section spinning die are respectively provided with a radial direction flange, and the opposite side faces of the two radial direction flanges are respectively provided with a circular groove used for clamping a wheel hub blank. Due to the fact that according to the wheel hub spinning forming die, the circular grooves are adopted for installing the wheel hub blank in a clamping mode, tools such as a pressing block and a screw, in the prior art, used for fixing the blank are omitted, rapid material loading and unloading can be achieved, and production efficiency is improved. Meanwhile, the remaining amount of the blank is reduced, blank material is saved, and production cost is saved. Due to the fact that the centering positioning structures are arranged, rapid and accurate centering in the process of machining can be achieved, and spinning precision of a rim is improved.