In the traditional sheet metal processing technology, it often takes a period to complete work to complete the processing of metal plates. Then the technology of laser cutting is used for metal stamping processing. It takes only a few seconds from the beginning to the end, and then a smooth hole appears in front of the eyes. The cnc laser metal cutting machine uses the principle of the laser beam to irradiate the metal surface and generates huge energy in an instant, And uses this energy to cut metal.

The application of lasers in cutting metal materials has been widely known, but many people do not know how to judge the processing quality when using laser cutting machines. The cutting quality is usually judged from the aspects of end surface roughness, bottom burr, perpendicularity, slit width, etc.

End surface roughness-Cnc laser metal cutting machine

Whencnc laser metal cutting machine, are affected by airflow and feed speed, the end face will form vertical (or inclined) lines. The deeper the lines, the rougher the end face is, and the shallower the lines, the smoother the end face is. Roughness not only affects the appearance of edges but also affects the friction characteristics. Therefore, the lower the roughness, the higher the cutting quality. By adjusting parameters such as laser power, feed speed, focal length, auxiliary gas type, and air pressure, the end face roughness can be continuously optimized.

Bottom burr-Cnc laser cutting machines

The principle of laser cutting metal is to vaporize the metal instantly through the high energy of the laser and blow away the slag on the surface of the workpiece through auxiliary gas. However, in the actual processing process, factors such as thick plate, insufficient air pressure, and mismatched feed speed will lead to burr formation after cooling of some slag and hanging at the bottom of the workpiece. At this time, additional deburring work is required, which consumes additional man hours. The burr and slag hanging at the bottom of the workpiece are very important criteria for judging the cutting quality.

Verticality-Cnc laser metal cutting machine

For sheet metal, the verticality of laser cutting can be ignored, but when the thickness of the material exceeds 10mm, the verticality of the cutting edge is very important. When away from the focus, the laser beam becomes divergent, and the cutting becomes wider towards the top or bottom according to the position of the focus. The cutting edge deviates from the vertical line by a few percent. The more vertical the edge is, the higher the cutting quality is.

Slit width

Slotting width is the embodiment of machining accuracy, which usually does not affect the cutting quality. Only when the workpiece needs to form a particularly precise contour and pattern, the slotting width will become an important indicator. The slit width determines the minimum inner diameter of the contour. The smaller the slit width, the more precise the contour and the smaller the hole diameter can be processed, which is also one of the important advantages of laser cutting instead of plasma cutting. However, with the increase in plate thickness, the slit width will inevitably increase. To ensure stable and high-precision cutting, it is necessary to ensure that the workpiece is stable in the processing area of the laser cutting machine.

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