The design principle of the punch press is to convert circular motion into linear motion. The main motor generates power to drive the flywheel. The clutch drives the gear, crankshaft (or eccentric gear), connecting rod, etc., to achieve the linear motion of the slider. The movement of the connecting rod is a circular movement.

The connecting rod and the sliding block need to have the transition point of circular motion and linear motion. There are roughly two mechanisms in the design, one is ball type, the other is pin type (cylindrical type), through which circular motion Converted into linear motion of the slider. The punch presses the material to deform it plastically to obtain the required shape and precision. Therefore, it must be matched with a set of molds (upper mold and lower mold), the material is placed in between, and the machine applies pressure to deform it , The reaction force caused by the force applied to the material during processing is absorbed by the punch machine body.