I. Classification by Process Nature
(1) the blanking die separates the material along the closed or
open contour line. Such as blanking die, punching die, cutting die,
cutting die, cutting die, cutting die and so on.
(2) the bending die makes the blank or other blank produce bending
deformation along the straight line (bending curve), so as to
obtain a certain angle and shape of the workpiece mold.
(3) the drawing die is a die which can make blank into open hollow
part or make hollow part change shape and size further.
(4) the forming die is a kind of die which can directly copy the
blank or semi-finished workpiece according to the shape of the
convex and concave die, while the material itself only produces
local plastic deformation. Such as bulging die, necking die,
expanding die, rolling forming die, flanging die, shaping die, etc.
II. By Process Combination
(1) The single process die only completes one stamping process in
one stroke of the press.
(2) The compound die has only one working position. In one stroke
of the press, two or more stamping processes are completed at the
same working position at the same time.
(3) Progressive die (also called continuous die) has two or more
working positions in the feeding direction of the blank. In one
stroke of the press, two or more stamping processes are completed
on different working positions one by one.