Moulds can generally be classified according to the following main characteristics: 1. Classification according to the nature of the process a. Blanking die: A die that separates materials along a closed or open outline. Such as blanking die, punching die, cutting die, slitting die, trimming die, cutting die, etc. b. Bending mold: A mold that makes the sheet blank or other blanks bend and deform along a straight line (bending line) to obtain a workpiece with a certain angle and shape. c. Drawing die: It is a die to make the blank of the sheet into an open hollow part, or to further change the shape and size of the hollow part. d. Forming mold: It is a mold that directly replicates the blank or semi-finished workpiece according to the shape of the convex and concave molds, and the material itself only produces local plastic deformation. Such as bulging molds, necking molds, flaring molds, undulating forming molds, flanging molds, shaping molds, etc. 2. Classification according to the degree of process combination a. Single process mold: In one stroke of the press, only one stamping process is completed. b. Compound mold: There is only one station. In one stroke of the press, two or more stamping processes can be completed at the same station at the same time. c. Progressive die (also called continuous die): In the feeding direction of the blank, there are two or more stations. In one stroke of the press, two or two passes are completed successively at different stations. Die for more than one stamping process. 3. Classification according to the processing method of the product According to different product processing methods, molds can be divided into five categories: punching and shearing molds, bending molds, drawing molds, forming molds and compression molds. a. Punching and shearing dies: the work is done by shearing. Commonly used forms are shearing dies, blanking dies, punching dies, trimming dies, edge dies, punching dies and punching dies. b. Bending mold: It is the shape of bending the flat blank into an angle. Depending on the shape, accuracy and production volume of the part, there are many different forms of mold, such as ordinary bending die, cam bending die, curling Stamping dies, arc bending dies, bending punching dies and twisting dies, etc. c. Drawing mold: Drawing mold is to make flat blank into seamless container with bottom. d. Forming die: refers to the use of various local deformation methods to change the shape of the blank. Its forms include convex forming die, curling edge forming die, necking forming die, hole flange forming die, and round edge forming die. e. Compression die: It uses strong pressure to make the metal blank flow and deform into the required shape. The types include extrusion die, embossing die, embossing die, and end pressure die.

The main component of the automobile mold is the cover mold. This type of die is mainly a cold die. In a broad sense, "automobile mold" is the general term for the molds used to manufacture all parts of automobiles. For example, stamping molds, injection molds, forging molds, casting wax molds, glass molds, etc. The stamping parts on the car body are roughly divided into cover parts, beam parts and general stamping parts. The stamping parts that can clearly express the characteristics of the car's image are the car cover parts. Therefore, the more specific automobile mold can be said to be the "automotive cover stamping mold." Referred to as automotive panel die. For example, the front door outer panel trimming die, the front door inner panel punching die, etc. Of course, not only the car body has stamping parts. All stamping dies on automobiles are called "automotive stamping dies". In summary: 1. Automobile mold is the general name of molds used to manufacture all parts of automobiles. 2. Automobile stamping dies are used to punch all stamping parts on automobiles. 3. Auto body stamping die is a die for punching all stamping parts on auto body. 4. Auto cover stamping die is a die for punching all cover parts on auto body. Now when we talk about automobile molds in this sector, it seems to refer to automobile cover die. In order not to be confused with automobile die in a broad sense, automobile cover die is used instead of automobile die when posting. There are many forms of stamping dies, and the dies are also classified according to the nature of work, mold structure, and mold materials.

In a narrow sense, automobile mold is the general name of all stamping parts on the body of bai punching automobile, that is, "automobile body stamping mold", which is the general name of the mold for manufacturing all parts of the automobile. For example, stamping molds, injection molds, forging molds, casting wax molds, glass molds, etc. The stamping parts on the car body are roughly divided into cover parts, beam parts and general stamping parts. The stamping parts that can clearly express the characteristics of the car's image are the car cover parts. Therefore, the more specific automobile mold can be said to be the "automobile panel stamping mold", referred to as the automobile panel die, for example, the front door outer panel trimming die, the front door inner panel punching die, etc.

For all kinds of stamping parts, drawing dies are difficult to handle, because the material will flow, and other types will also deal with some, but like high-dimensional stamping parts, the springback problem is sometimes a headache, the tribe has not seen where There are ready-made springback calculation formulas, which are generally based on experience. Use different materials and different r angles for compensation. Of course, the factors affecting rebound are quite clear. For mold repair, according to certain conditions, an effective method of controlling springback can still be found.