A precision punch is a mechanical device that stamping metal materials into the desired shape by mechanical force. Its working principle is to use mechanical force and power to press metal materials to achieve the forming of metal workpieces. The following details the working principle of the precision punching machine:

1. Mechanical structure: Precision punching machine is usually composed of frame, slider/punch, crank mechanism, transmission system, etc. Among them, the crank mechanism drives the crank shaft to rotate through the motor, generating the reciprocating motion force, and transferring the power to the slider to achieve the up and down reciprocating linear motion.

2. Punch device: Punch device is the core component of precision punching machine, usually using a special punch design, used to press metal materials according to the mold profile. The punch movement trajectory is accurate, the strength is adjustable, and the stamping process can be achieved with high precision.

3. Mold system: Precision punching machine uses molds to achieve stamping and forming of metal materials, and different molds can manufacture workpiece of different shapes and sizes. The die is usually composed of an upper die and a lower die, which press the metal material by reciprocating up and down.

4. Control system: Precision punching machine is equipped with advanced control system, which can realize accurate control of reciprocating motion, impact force, mold position, stamping speed and other parameters. Automatic production under different processing requirements can be realized through the control system.

5. Processing process: The workflow of precision punching machine generally includes mold assembly, workpiece positioning, stamping processing, workpiece stripping and other steps. In the stamping process, the metal material is placed between the dies, and the punch presses down the metal material through the power provided by the crank mechanism, so as to achieve the forming of the workpiece.

In general, precision presses press metal materials through mechanical force and power, and achieve efficient and accurate metal processing and forming through rationally designed mechanisms and control systems. In industrial production, precision punches are widely used in electronics, automobiles, home appliances and other fields, and have become one of the important processing equipment.