(1) The blanking die separates the material along the closed or open contour line. Such as blanking die, punching die, cutting die, cutting die, trimming die, cutting die, etc.

(2) Bending the die makes the blank or other blanks bend and deform along a straight line (bending line), thus obtaining a die with a certain angle and shape.

(3) Drawing die is a die that makes the blank of sheet metal into an open hollow part or further changes the shape and size of the hollow part.

(4) The forming die is a die for directly copying and forming a blank or semi-finished workpiece according to the shapes of the male die and the female die, and the material itself only produces local plastic deformation. Such as expanding die, necking die, flaring die, wavy forming die, flanging die, shaping die, etc.