Die applied to automobile sheet metal part stamping process

The invention relates to a die applied to an automobile sheet metal part stamping process, which comprises an upper die plate and a lower die plate, and further comprises forming assemblies which are respectively mounted on the upper die plate and the lower die plate and can be adaptive to stamping forming of sheet metal parts with two diameters, and each forming assembly comprises a first die group capable of stamping and forming the sheet metal part with the small diameter at one time, and a second die group capable of stamping and forming the sheet metal part with the small diameter at one time. And the second die set is used for bending and punch forming a large-diameter sheet metal part. Through cooperation of the first die set and the second die set, stamping forming of sheet metal parts with different diameters can be achieved, equipment use is reduced, the production efficiency is improved, meanwhile, through cooperation of a first limiting column, a second limiting column, a first limiting check bloc