The application of laser cutting machine has promoted the rapid development of sheet metal processing. Its advantages such as high processing precision, fast cutting speed and flexible processing have eliminated the traditional sheet metal processing mode. What kind of magic equipment is the laser cutting machine? Now Wuhan High Energy Laser will introduce what parts it is composed of, so that you can have a deeper understanding of the laser cutting machine.
The laser cutting machine system is generally composed of laser generator, (external) beam transmission component, workbench (machine tool), microcomputer numerical control cabinet, cooler and computer (hardware and software).
1. Machine host part: the machine part of laser cutting machine, the mechanical part that realizes the movement of X, Y, Z axes, including the cutting platform. It is used to place the workpiece to be cut, and can move correctly and accurately according to the control program, usually driven by a servo motor.
2. Laser generator: device for generating laser light source. For the purpose of laser cutting, except for a few occasions where YAG solid state lasers are used, most of them use CO2 gas lasers with high electro-optical conversion efficiency and high power output. Because laser cutting requires high beam quality, not all lasers can be used for cutting. Gaussian mode is applicable to low order mode CO2 laser less than 1500W, 100W-3000W and multi-mode CO2 laser more than 3000W.
3. External optical path: refracting mirror, used to guide the laser to the desired direction. In order to avoid failure of the beam path, all mirrors shall be protected by protective covers, and clean positive pressure protective gas shall be introduced to protect the lenses from pollution. A set of lenses with good performance will focus a beam without divergence angle into an infinitely small spot. A lens with a 5.0 inch focal length is generally used. 7.5 inch lenses are only used for>12 mm thick materials.
4. Numerical control system: control the machine tool to realize the movement of X, Y, Z axes, and also control the output power of the laser.
5. Stabilized voltage power supply: connected between laser, CNC machine tool and power supply system. It is mainly used to prevent interference from external power grid.
6. Cutting head: mainly including cavity, focusing lens base, focusing mirror, capacitive sensor, auxiliary gas nozzle and other parts. The cutting head drive device is used to drive the cutting head to move along the Z axis according to the program, and is composed of servo motor, screw rod or gear and other transmission parts.
7. Operation console: used to control the working process of the whole cutting device.
8. Water chiller: used to cool the laser generator. Laser is a device that converts electric energy into light energy. For example, the conversion rate of CO2 gas laser is generally 20%, and the remaining energy is converted into heat. The cooling water takes away the excess heat to maintain the normal operation of the laser generator. The water chiller unit also cools the reflector and focusing mirror of the external light path of the machine tool to ensure stable beam transmission quality and effectively prevent the lens from deformation or cracking due to excessive temperature.
9. Gas cylinder: including the working medium gas cylinder and auxiliary gas cylinder of the laser cutting machine, which are used to supplement the industrial gas of the laser vibration and supply the auxiliary gas for the cutting head.
10. Air compressor and air tank: provide and store compressed air.
11. Air cooling dryer and filter: used to supply clean dry air to the laser generator and beam path to keep the path and reflector working properly.
12. Exhaust dust remover: extract the smoke and dust generated during processing and filter them to make the exhaust gas emission meet the environmental protection standards.
13. Slag extractor: it is used to remove leftover materials and wastes generated during processing.
