The working principle of the laser cutting machine is to use the high power density laser beam to illuminate the workpiece, so that the irradiated material can melt, vaporize, ablation or reach the ignition point quickly, and the molten material is blown by the high speed airflow with the beam coaxial, thus the workpiece is cut open. Laser cutting is one of the hot cutting methods. Laser cutting compared with other thermal cutting methods, the specific advantages can be summarized as follows:
Good cutting quality: Due to small laser spot, high energy density and fast cutting speed, laser cutting can get better cutting quality. ① Laser Cutting incision narrow, parallel to the slit and perpendicular to the surface, cutting the size of the parts can reach ±0.05mm. ② cutting surface smooth and beautiful, surface roughness of only dozens of microns, and even laser cutting can be used as the last step, no machining, parts can be used directly. ③ material after laser cutting, the heat affected zone width is very small, cutting joints near the material performance is almost unaffected, and workpiece deformation is small, high cutting precision, cut the geometry of the seam is good, cut the cross-section of the shape of a more regular rectangular.
Laser Cutting
High cutting efficiency: Due to the laser transmission characteristics, laser cutting machine generally equipped with more than one CNC worktable, the entire cutting process can be realized numerically. operation, only change the numerical control program, can be applied to different shape parts of the cutting, can be used for two-dimensional cutting, but also to achieve three-dimensional cutting.
Cutting speed: With a power of 1200W laser cutting 2mm thick low-carbon steel plate, cutting speed up to 15000px/min, cutting 5mm thick polypropylene resin board, cutting speed up to 30000px/min. The material in the laser cutting does not need to install clamp fixed, can save the fixture, and save the upper and lower auxiliary time.
Non-contact cutting: laser cutting torch and workpiece without contact, there is no tool wear. Machining different shapes of parts, do not need to replace the "cutter", just change the output parameters of the laser. The laser cutting process has low noise, small vibration and no pollution.
Many kinds of cutting materials: with oxygen acetylene cutting and plasma cutting, laser cutting materials, including metal, non-metallic, metal and non-metallic matrix composites, leather, wood and fiber. But for different materials, because of their own thermal physical properties and laser absorption rate is different, showing different laser cutting adaptability.
In summary, from the market situation, with the steady growth of the laser processing market and the weak macroeconomic and industrial demand, the laser processing equipment has maintained the steady growth of the industry by virtue of its business demand in the high-end processing market, in the technical field, laser processing has multiple technical advantages over the traditional machine tool cutting process and other hot machining. , and high-end processing market requirements of high-precision, low wear, high efficiency and other requirements coincide.
