Stamping is an efficient production method that uses composite molds, especially multi-station progressive molds, to complete multiple stamping processes on a single or multi-station press, achieving fully automatic production from strip uncoiling, leveling, punching to forming and finishing. High production efficiency, good labor conditions, low production costs, typically producing hundreds of pieces per minute. Compared with other methods of mechanical processing and plastic processing, stamping processing has many unique advantages in both technical and economic aspects.