Composition of laser cutting machine 1. Laser power supply，it supplies the high voltage power for the laser oscillation. 2. Lser oscillator, the main equipment of producing laser 3. Refracting mirror is used to guide the direction of the laser. In order to prevent the beam failure, all mirrors should be protected with a protective cover. 4, Torch includes a gun body, a focusing lens and auxiliary gas nozzle parts etc.. 5. Cutting platform is used to place the cutting workpiece and move accurately and accurately according to the control program. It is usually driven by the machine motor. 6, Torch driving device for driving program in accordance with the torch along the X axis and Z axis direction,itis composed of servo motor and screw rod transmission parts. 7, Numerical control device to control the cutting platform and the torch movement, but also control the laser output power. 8. The operating disk is used to control the working process of the whole cutting device. 9. The cylinder includes the laser working medium cylinder and the auxiliary cylinder, which are used to supplement the working gas of the laser oscillation and the auxiliary gas for the supply of cutting. 10. The cooling water circulation device is used to cool the laser oscillator. A laser is a device that uses electrical energy to convert into light energy. For example, the conversion efficiency of a CO2 gas laser is generally 20%, and the remaining 80% energy is converted into heat. The cooling water takes the excess heat away to keep the oscillator working properly.