Method for carrying out progressive precision extrusion forming of thin-shelled parts with internal and external teeth based on generating method

The invention discloses a method for carrying out progressive precision extrusion forming of thin-shelled parts with internal and external teeth based on a generating method, which comprises the following steps of: A, manufacturing a main shaft mold and a clamping roller mold; B, arranging a main shaft, a synchronous main shaft, a synchronous clamping roller shaft, a clamping roller radial feed shaft and a clamping roller axial feed shaft, installing the main shaft mold on the main shaft, and installing the clamping roller mold on the synchronous clamping roller; C, installing a preformed thin-shelled blank on the main shaft mold so that the main shaft rotates forwards, jointly enabling the clamping roller radial feed shaft and the clamping roller axial feed shaft to enter an extrusion station so that the clamping roller radial feed shaft stops feeding and the clamping roller axial feed shaft carries out feeding, and through multi-pass extrusion, completing the longitudinal forming of a thin-shelled part with