There are many forms of metal stamping dies. The dies are classified according to the nature of work, mold construction, and mold materials.

Classification according to process properties

a. Blanking die The material is separated into molds along closed or open contours. Such as blanking die, punching die, cutting die, cutting die, trimming die, cutting die.

b. Bending die A blank or other blank that bends along a straight line (bending line) to obtain a mold of a workpiece with a certain angle and shape.

c. Drawing Dies are molds that make open blanks from sheet stock blanks, or that change the shape and size of hollow stocks further.

d. Molding The mold is a mold that directly reproduces a blank or a semi-finished product according to the shape of a convex or a concave die, while the material itself only produces a local plastic deformation. Such as bulging die, shrink die, flaring die, relief forming die, flanging die, and so on.

e. riveting die is to use external force to connect or lap together the participating parts in a certain order and manner to form an overall

According to the degree of process combination

a. One-step mold In the one stroke of the press, only one stamping step is completed.

b. Compound mold There is only one station. In one stroke of the press, molds with two or more stamping operations are simultaneously completed on the same station.

c. Progressive die (also known as continuous die) In the feeding direction of the blank, there are two or more stations, and two or two stations are successively completed on different stations during one stroke of the press. The above stamping process mold.

d. The transfer mold integrates the characteristics of the single-step die and the progressive die, uses the robot handing system to achieve rapid transfer within the die, which can greatly improve the product's production efficiency, reduce the product's production cost, save material cost, and ensure stable quality. reliable.

According to the product processing method

According to the different processing methods of products, the mold can be divided into five categories: punching die, bending die, drawing die, forming die and compression die.

a. Punching die: The work is done by shearing. The commonly used forms include cutting die, blanking die, punching die, trimming die, full edge die, draw hole die and punching die.

b. Bending Mould: It is the shape that bends the flat blank into an angle. Depending on the shape of the part, the accuracy and the amount of production, there are many different types of die, such as ordinary bending die, cam bending die, and curling Die, arc bending die, bend punch die and twist die.

c. Drawing mold: The drawing mold is a flat bottomed seamless container.

d. Forming dies: Refers to the use of various local deformation methods to change the shape of the blank, in the form of a convex forming die, a roll forming die, a necking forming die, an orifice flange forming die, and a circular edge forming die.

e. Compression die: The use of strong pressure, the metal wool embryo flow deformation, to become the desired shape, its types are extruded die, embossing die, stamping die, die end pressure.