The Metal Stamping process is the production technology of the product parts with certain shape, size and performance by means of the power of the conventional or special stamping equipment to deform the sheet metal directly in the die and deform it. Sheet metal, die and equipment are the three elements in stamping process. According to the stamping temperature is divided into hot stamping and cold stamping. The former is suitable for sheet metal processing with high deformation resistance and poor plasticity. The latter is carried out at room temperature and is a common stamping method for thin plates. It is one of the main methods of metal plastic processing (or pressure processing), and also belongs to material forming engineering technology. It is one of Precision Machining.