What is the reason for the cutting error of the laser cutting machine?

　　 Since the advent of the fiber laser cutting machine, the productivity in the metal processing field has been greatly improved. Due to its high precision, small cutting seam, high speed, and small cutting deformation, the quality of the finished product is far superior to the traditional processing quality. Nowadays, laser cutting equipment occupies a large proportion in the metal processing industry.

　　In the process of using the device, more or less problems will occur. The same is true when using a laser cutting machine. For example, in the laser cutting process, the parameters are set well, but cutting errors still occur. At this point, we need to start from the root of the problem, find out the cause, and make adjustments to solve the problem. Let us look at the cause of the error.

　　 1. The product itself has geometric errors. For example, the processed product itself is not flat or has small particles on the surface. Set the default cutting process of the cutting data for the flat plate. If the surface of the product is uneven and different areas are heated unevenly during cutting, then the thin surface will overheat and melt, and the thick surface may not melt. Due to the uneven surface, the focus of the laser changes randomly with the position of the surface of the processed object and the change of the ideal position.

　　 2. Programming error In the processing of fiber laser cutting machine, the processing path on the complex curved surface includes straight lines, arcs, etc. There is an error between the fitted curve and the actual curve. These errors result in an error between the relative position of the actual focus and the surface of the rendered object and the ideal programmed position.

　　 3. The actual thickness of the material exceeds the cutting range. For example, a machine with a power of 1500W can cut carbon steel plates up to 12 mm thick. Now the 14 mm thick carbon steel plate is forcibly cut, even if it can be cut, there will definitely be slag inclusions at the bottom. Therefore, it is necessary to determine the thickness of the plate and the thickness that the device can actually cut before cutting, and the quality accuracy beyond the cutting range cannot be guaranteed.

　　 Four. During the cutting process of the fiber laser cutting machine, the focus position error will also cause the error during cutting. Many factors will change the relative position of the focal point and the surface of the product, and will also affect the accuracy of the processed product. For example, the installation method of the accessories, the level of the machine itself, the degree of wear of the rack of the machine bed, etc., check before cutting to reduce errors.

　　 The above is the reason for the error phenomenon in the use of fiber laser cutting machine. These random errors are inevitable, but their causes are generally traceable. We only need to analyze whether it is caused by the above situation, we can find them. Only by finding a solution can the cutting accuracy of the fiber laser cutting machine be maintained.

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