According the specialities of square cup in multi-stage deep drawing process, two stages square cup deep drawing physical simulation mold scheme was draw out, the methods of middle process step and dimensions of punch and die were also given in details in the paper.

Multi-cycle spinning tube(horizontal machine products) and spinning pulley (vertical machine products) are regarded as the research object.

By using the software PAMSTAMP 2G,a software was written for digital simulation of sheet metal forming,and finite element simulation in multistage deep drawing process was carried out to check out the rationality of the blank and tools′ dimensions at each stage.

Wall thickness variation during multi-pass spinning of large complicated shell;

Because of the limitation of material forming limit and other factors, it is necessary to produce this kind of parts by multi-pass spinning technology.

An optimization design method of multi step ironing process parameters is proposed.