Arc-shaped workpiece stamping forming die structure and stamping method

The invention discloses an arc-shaped workpiece stamping forming die structure and a stamping method, and belongs to the technical field of stamping blanking machines.The die structure comprises a lower die assembly and an upper die assembly, the upper die assembly is located above the lower die assembly, the lower die assembly is provided with a female die, the upper die assembly is provided with a punch, and the punch is located above the female die. The female die is provided with a positioning groove, a punching hole and a blanking positioning part; the positioning groove is a through groove transversely penetrating through the two end faces of the female die, and the two inner side groove faces of the positioning groove are side limiting faces for limiting the side edge of the arc-shaped workpiece. The punching hole is formed in the bottom face of the positioning groove and located below the punch. The blanking positioning part is arranged in the positioning groove and is of a protruding structure formed