Spinning forming new technology of shell part with inner and outer teeth

The invention discloses a spinning forming new technology of a shell part with inner and outer teeth and relates to a plastic working method. The spinning forming new technology includes the following steps that firstly, flat blank is machined to be preformed blank which is in the shape of a cup, and the thickness of the side wall of the preformed blank is larger than that of the side wall of the shell part with the inner and outer teeth; secondly, a spinning roller and a core die are manufactured, the surface of the side wall of the spinning roller is provided with a plurality of gears used for forming the outer teeth of the shell part with the inner and outer teeth, and the surface of the side wall of the core die is provided with a plurality of gears used for forming the inner teeth of the shell part with the inner and outer teeth; thirdly, the preformed blank is arranged on the core die in a sleeved mode, so that the preformed blank synchronously rotates with the core die, meanwhile, the spinning wheel synchronously and oppositely rotates with the core die, feeding is performed in the axial direction close to the core die, and therefore spinning forming of the shell part with the inner and outer teeth is finished. According to the spinning forming new technology of the shell part with the inner and outer teeth, the technological steps are simple, the production cost is low, the forming precision and the forming efficiency are high, performance is good, and high practicability is achieved.