Classification of composite die
(1) punching type composite die such as blanking, punching composite die; Cutting, punching composite die, etc.;
(2) forming composite die such as bending composite die, composite extrusion die, etc.;
(3) punching and forming composite die, such as blanking, drawing composite die; Punching and flanging compound die; Drawing and cutting composite die; Blanking, deep drawing, punching, flanging compound die.
