How to improve the accuracy of laser cutting machine?

How to improve the accuracy of laser cutting machine?

The accuracy of the laser cutting machine often affects the quality of the cutting. The products cut by the deviation of the accuracy of the laser cutting machine are unqualified and waste manpower and material resources.
How to improve the accuracy of laser cutting machine? Let’s first understand several important factors that affect the accuracy of laser cutting processing.
First, the size of the spot after the laser beam passes through the focus: the smaller the spot after the laser beam is concentrated, the higher the laser cutting processing accuracy, especially the smaller the slit, the smallest spot can reach 0.01mm.
Second, the positioning accuracy of the worktable determines the repeatability of the laser cutting process. The higher the worktable accuracy, the higher the cutting accuracy.
Third, the greater the thickness of the workpiece, the lower the accuracy and the greater the slit. Because the laser beam is tapered, the slit is also tapered, and the thickness of 0.3mm material is much smaller than the slit of 2mm.

So, how can high accuracy be achieved during laser cutting?

The first one is the focus position control technology. The smaller the focal depth of the focusing lens, the smaller the focal spot diameter, so it is very important to control the position of the focus relative to the surface of the material to be cut.

The second is cutting perforation technology. Any kind of thermal cutting technology, except in a few cases, which can start from the edge of the board, generally a small hole must be drilled in the board.

The third is the nozzle design and air flow control technology. When laser cutting steel, oxygen and a focused laser beam are shot through the nozzle to the material to be cut, thus forming an air stream. The basic requirement for the air flow is that the air flow into the incision should be large and the speed should be high, so that enough oxidation can make the incision material fully carry out the exothermic reaction; at the same time, there is enough momentum to spray the molten material out.

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