Introduction to the Form and Classification of Stamping Die for Automobile Panel

There are many forms of stamping dies for automobile panels, and stamping dies are classified according to the working nature, die structure and die materials. Generally, it can be classified according to the following main characteristics:

1. Classification according to process nature

A. blanking die: a die that separates materials along a closed or open contour line. Such as blanking die, punching die, cutting die, cutting die, trimming die, cutting die, etc.
B. Bending die: a die that makes the blank or other blanks bend along a straight line (bending line) to obtain a workpiece with a certain angle and shape.
C. Drawing die: it 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.
D. Forming die: it is a die that directly replicates and forms 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 expanding die, necking die, expanding die, undulating forming die, flanging die, shaping die, etc.

2. Classification according to the degree of process combination

A. Single-process die: a die that only completes one stamping process in one stroke of the press.
B. Compound die: a die with only one station, in which two or more stamping processes are simultaneously completed at the same station in one stroke of the press.
C. Progressive die (also called continuous die): a die with two or more stations in the feeding direction of the blank, and two or more stamping processes are successively completed at different stations in one stroke of the press.

3. Classification according to the processing method of products. According to the different processing methods of products, the dies can be divided into five categories: punching and shearing dies, bending dies, drawing dies, forming dies and compression dies.

A. Punching and shearing die: the work is completed by shearing, and the commonly used forms are shearing die, blanking die, punching die, trimming die, trimming die, broaching die and punching die.
B. Bending die: the flat blank is bent into an angle shape. Depending on the shape, precision and output of parts, there are many different forms of dies, such as ordinary bending die, cam bending die, curling die, arc bending die, bending punching die and twisting die.
C, drawing mold: drawing mold is to make plane blank into a seamless container with bottom.
D. Forming die: refers to changing the shape of blank by various local deformation methods, and its forms include convex forming die, rolled edge forming die, necking forming die, hole flange forming die and round edge forming die.
E. Compression die: It is to use strong pressure to make the metal blank flow and deform into the required shape. Its types include extrusion die, embossing die, stamping die and end pressing die.