Application of laser cutting machine in sheet metal processing

The advantages of laser cutting equipment are fast cutting speed, high precision, good beam quality, and can undertake the sheet metal processing business of various plates. It is the equipment to improve the efficiency of today's sheet metal chassis cabinet processing industry.

The laser cutting machine is a laser beam emitted from the laser device, which is focused into a high power density laser beam through the optical path system. The laser beam is irradiated to the surface of the workpiece, so that the workpiece reaches the melting point or boiling point, and the high-pressure gas coaxial with the beam will blow away the molten or vaporized metal. With the movement of the relative position of the beam and the workpiece, the material is finally slit, so as to achieve the purpose of cutting.

Laser cutting has good cutting effect and precision, and it is very simple to operate. It has more advantages than machine cutting, such as fast cutting speed, narrow slit, high cut finish, slight deformation, heat affected zone The characteristics of small and high efficiency, cutting is not limited to two-dimensional plane cutting, but more and more three-dimensional cutting.

High laser cutting efficiency: due to the transmission characteristics of laser, laser cutting machines are generally equipped with multiple CNC worktables, and the entire cutting process can be fully CNC controlled. When manipulating, only need to change the numerical control program, can be combined with the cutting of different shape parts, which can not only perform two-dimensional cutting, but also realize three-dimensional cutting.

Fast laser cutting speed: The laser with a power of 1200W cuts 2mm thick low-carbon steel plates at a cutting speed of up to 600cm/min; cutting 5mm thick polypropylene resin plates at a cutting speed of up to 1200cm/min. The material does not need to be clamped and fixed during laser cutting.

Good cutting quality:

1: The laser cutting incision is narrow and narrow, the two sides of the slit are parallel and perpendicular to the surface, and the dimensional accuracy of the cut parts can reach ±0.05mm. 

2: The cutting surface is smooth and beautiful, the roughness of the surface is only tens of microns, and even laser cutting can be used as the last process without mechanical processing, and the parts can be used directly. 

3: After the material is cut by laser, the width of the heat affected zone is very small, the function of the material around the slit is almost unaffected, and the workpiece deformation is small, the cutting accuracy is high, the geometry of the slit is good, and the shape of the slit cross section is more Regular rectangle. The comparison of laser cutting, oxyacetylene cutting and plasma cutting methods is shown in Table 1. The cutting material is 6.2mm thick low carbon steel plate.

Non-contact cutting: There is no direct contact between the torch and the workpiece during laser cutting, and there is no tool wear. For processing parts with different shapes, there is no need to change the "tool", only the output parameters of the laser need to be changed. The laser cutting process has low noise, small vibration and little pollution.

There are many cutting materials: compared with oxyacetylene cutting and plasma cutting, there are many types of laser cutting materials, including metal, non-metal, metal-based and non-metal-based composite materials, leather, wood and fiber.