The difference between stamping parts and castings: the characteristics of thin, uniform, light and strong stamping can produce workpieces with ribs, ribs, undulations or flanging that are difficult to manufacture by other methods to increase their rigidity. Due to the use of precision molds, the precision of the workpiece can reach the micron level, and the repeatability is high, the specifications are consistent, and the holes, bosses, etc. can be punched out.
Cold stamped parts are generally no longer processed by cutting, or only require a small amount of cutting. The accuracy and surface condition of hot stamping parts is lower than that of cold stamping parts, but it is still better than castings and forgings, and the amount of cutting is small.
Stamping is mainly classified according to process, and can be divided into two categories: separation process and forming process.
The separation process is also called punching, and its purpose is to separate the stamping parts from the sheet material along a certain contour line, while ensuring the quality requirements of the separation section. Stamping is an efficient production method. It uses a compound die, especially a multi-station progressive die, which can complete multiple stamping processes on a single press to achieve a complete range from strip unwinding, leveling, punching to forming and finishing. Automatic production.
High production efficiency, good labor conditions, low production cost, generally can produce hundreds of pieces per minute. The purpose of the forming process is to make the sheet plastically deform without breaking the blank to make a workpiece of the desired shape and size. In actual production, multiple processes are often applied to a workpiece. Punching, bending, shearing, drawing, bulging, spinning, and straightening are just a few of the main stamping processes
