Summary of manufacturing characteristics of cold stamping dies

Cold stamping has been widely used in production. Of the world's steel, 60% to 70% are plates, most of which are made by stamping. The car body, chassis, fuel tank, radiator fins, boiler drums, container shells, motors and electrical appliances are all stamped and processed. There are also a large number of stamping parts in products such as instruments, household appliances, bicycles, office equipment, and living utensils. Cold stamping can process various types of products, ranging in size from the small second hand of a clock to the longitudinal beam and covering parts of automobiles; the punching thickness has reached more than 20 mm, the processing size is large, and the adaptability is strong. The main tool for cold stamping production is cold stamping dies. Its manufacturing and assembly quality and accuracy directly affect whether the stamping production can be carried out normally and the cost of stamping parts, dimensional accuracy and surface quality. However, cold stamping dies are mostly produced in single pieces in small batches, with complex structure and profile, high precision requirements, and processing difficulties. Therefore, compared with other production processes, mold production has its unique characteristics. Its main performance is: 1. According to the batch size of stamping parts, choose different die production methods. When organizing die production, you should choose and determine different manufacturing die production methods according to the number of stamping parts to be produced. For small batches of stamping parts, the upper and lower die preparation and single-piece production processes can be used for the manufacture of the punching parts; for larger batches of stamping parts, the manufacturing and processing methods of the molds can be produced by stamping parts or stamping processes. In other words, the standardized design is adopted according to the die structure, so that the blanks are supplied in complete sets. 2. Die production has a certain degree of continuity. When manufacturing a die, when multiple sets of die are required for the same stamping part, the continuity of the manufacturing and adjustment of the die must be ensured. 3. Determine certain dimensions of the die after the mold test, such as the drawing, forming and bending of the blank size and shape of the complex shape product, and certain dimensions of the mold working parts. It is difficult to obtain the correct size through theoretical calculations. After the die test, the blank size and shape of the previous process are determined. The rounded corners of the convex and concave molds should also be tested to determine the size. After the trial-production inspection and correction are appropriate, it is quenched again. 4. The manufacturing cycle of the die is longer. The manufacturing cycle of the die is generally longer. When manufacturing punching dies, advanced mold making technology should be used as much as possible to shorten the manufacturing cycle to reduce the cost of punching dies. 5. The quality and accuracy of the die is determined after debugging. After the cold die is assembled, although it is qualified according to the design drawing, it still cannot be the final product. The quality and accuracy of the die must be determined through trial punching and adjustment until a qualified product is punched out. . When manufacturing cold stamping dies, the purpose of studying and mastering the above-mentioned characteristics of stamping die production is to better understand the rules of stamping die production, so as to achieve the purpose of guiding and promoting production. Previous post: On the key points of the assembly process of cold stamping dies