The precision of the laser cutting machine often affects the quality of cutting, and the deviation of the precision of the laser cutting machine for the cut product is unqualified. In the process of using a laser cutting machine, it is necessary to consider how to improve the precision of the laser cutting machine.
How to improve the precision of laser cutting machine?
Generally speaking, the main factor affecting the cutting quality is the size of the laser beam generated by the focusing of the spot: the smaller the spot after the laser beam is focused, the more accurate the laser cutting process, especially the smaller the incision, the smallest spot can reach 0.01mm .
The alignment accuracy of the table determines the repeatability of the laser cutting process: the more precise the table, the more precise the cut will be.
As the thickness of the workpiece increases, the accuracy decreases and the cutting gap becomes larger. Since the laser beam is tapered, the cutting seam will also be tapered, so the cutting seam for 0.3MM thick material will be much smaller than for 2MM thick material.
The material of the workpiece has a certain influence on the accuracy of laser cutting. Even if the material is the same, different components can cause differences in cutting accuracy.
How does the laser cutting process achieve high precision?
First, focus position control technology. The shallower the focal depth of the focusing lens, the smaller the focal diameter, so it is important to control the focal position relative to the surface of the material to be cut.
Secondly, cutting and punching technology. With any thermal cutting technique, with few exceptions, it is possible to start from the edge of the substrate, which generally requires drilling a small hole in the substrate. In the early days of the laser stamping combination machine, the first method used was to punch a hole, and then use a laser to cut through this small hole.
Lastly is the mouth design and airflow control technology. In laser cutting of steel, oxygen and a focused laser beam are directed through a nozzle onto the material to be cut, creating a gas flow. The basic requirement for the air flow is that the air flow entering the incision must be large and fast, with sufficient power to fully oxidize the incision material, generate an exothermic reaction, and blow away the sprayed molten material.
Laser cutting not only has no burrs and wrinkles, but also has high precision, which is better than plasma cutting. For many electromechanical manufacturing industries, modern laser cutting systems tend to be more popular than punching and forming processes because the microcomputer programming of modern laser cutting systems can easily cut workpieces of different shapes and sizes (the workpiece drawings can also be changed). On the whole, it is more economical, because although the processing speed is slower than that of die punching, it reduces the cost of the product, saves the consumption of the die, does not need to repair the die, and does not need to replace the die in time, thus saving the processing cost. This is the reason for its popularity.
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