2, laser welding machine control system: used to control the relative movement of the laser beam and the workpiece, as well as regulating the machine's operating parameters, to ensure the safe and reliable operation of the machine. Therefore, the control system is the core of the normal work of the laser welding machine.
3, laser: is the use of the principle of stimulated radiation so that the light in some of the excited material amplification or oscillation of the device, the device can emit laser light. Laser is the core part of the laser equipment, the requirements of the laser is stable, reliable, and can operate normally for a long time.
4, cooling system: laser welding machine work, the pump source of the laser input energy is converted to most of the lamp, the working material, and the heat of the cavity. When the temperature of the working material is too high, it will seriously damage the normal operation of the laser, therefore, cooling measures must be taken, generally using a closed-loop cooling system, including liquid pumps, heat exchangers and containers.
5, light guide and focusing system: light guide focusing system consists of circular polarizer, beam expanding mirror, reflector or fiber optic and focusing mirror, etc., to achieve the change of beam polarization state, direction, transmission of the beam and focusing function. The condition of these optical parts has an extremely important impact on the quality of laser welding. Under the action of high-power laser, optical components, especially the lens performance will deteriorate, so that the transmission rate decreased, resulting in a thermal lens effect, while the surface contamination will also increase the transmission loss.