Comparison between laser cutting and traditional stamping

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Laser cutting is an alternative process to traditional stamping. Laser cutting is a method of using a high energy density laser beam to instantly evaporate, melt or oxidize the material to achieve cutting, while the traditional stamping process is to complete the processing by stressing the metal sheet on the mold. Laser cutting machine is the laser emitted from the laser, through the optical path system, focusing into a high power density laser beam, the laser beam irradiates to the surface of the workpiece, so that the workpiece reaches the melting point or boiling point, while the high-pressure gas coaxial with the beam will melt or vaporize the metal blow away. With the movement of the relative position of the beam and the workpiece, the material is finally formed into a slit, so as to achieve the purpose of cutting. CNC punching machine belongs to the metal sheet forming machine tool, in the traditional process, in the metal sheet processing is mainly used in the “cutting” link. With the maturity of laser cutting technology, the replacement of laser cutting machine for CNC punching machine is an inevitable.

Compared with traditional cutting equipment, the advantages of laser cutting machine mainly include high cutting precision, fast speed, narrow slit, small heat-affected zone, and smooth cutting surface; Good processing flexibility, can cut pipes and other special-shaped materials; It can be cut without deformation on any hardness material.

The cutting speed of laser cutting equipment is more than 10 times that of CNC stamping machine tools, and the efficiency advantage is directly reflected in the economic advantages of laser cutting. And CNC punching machine as a traditional metal cutting method, there is a relatively big disadvantage, that is, the loss of materials is large. From the cutting effect, it is not as good as laser cutting, which usually requires secondary processing, and there is still a lack of accuracy. The reason why the laser cutting machine has very little damage to the material is mainly that it is a non-contact processing process, no secondary processing, the accuracy can reach the micron level, and it is also better than the stamping process.

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