Drawing die is also a kind of stamping die. The general working principle of stamping die is like cutting things with a knife, but the shape of the knife in the die is varied, and what the knife looks like is what the cut thing looks like. The working principle of the drawing die is a bit like blowing balloons, but the working principle of the drawing die is not air, but punch and die. What shape the punch and die are made into, the drawing part is what shape. The main working principle of the drawing die is to deform the required materials according to the shape people need. For example, stretch a flat plate into a bucket, bowl, basin, etc.