It is a very common technology in sheet metal laser processing to punch round hole by fiber laser cutting machine. The round cutting is not round, which involves the problems of parts matching. There are many sheet metal master said, I are according to computer drawings processing, why the final cut out of the hole is not round? The possible factors are as follows.
1. Check the optical fiber laser cutting machine hardware: beam, lens, nozzle, etc.
2. Check whether the servo motor of fiber laser cutting machine or the fixing of cutting head is loose
3. Check whether the light intensity of the fiber laser cutting machine has been adjusted properly, resulting in the end not overlapping in the final sheet metal laser processing. Generally speaking, the difference between the maximum light intensity and the minimum light intensity should not exceed 5%, and the speed should not be adjusted too fast. If it is too fast, the frame may jump, and the result will not coincide.
4. The blowing pressure is not suitable. In the process of blowing, when the air pressure is too small, the edge scraping and carbonization phenomenon will appear in the laser processing of sheet metal, and if the pressure is too high, it is easy to burst the hole. Therefore, this requires the sheet metal master and fiber laser cutting machine to cooperate perfectly, and select the appropriate air pressure by experience, so as to make the circular hole more full.
6. Check whether the servo motor parameters are wrong. The ellipse or irregularity of circular hole sometimes occurs, which is related to the mismatching of XY axis motion, and the direct cause of XY axis motion mismatch is improper adjustment of servo motor parameters. Therefore, there are certain requirements for the servo motor for the quality of laser processing round holes on the sheet metal laser cutting machine.
7. Precision error of guide rail and lead screw. The accuracy error of guide rail and lead screw of fiber laser cutting machine will directly lead to the accuracy of round hole not reaching the expectation. This is related to the strength of the fiber laser cutting machine manufacturers. Usually, some small factories will cheat customers that the accuracy of the fiber laser cutting machine can reach 0.1 mm, but in fact, in the actual sheet metal laser processing process, the laser drilling quality and effect are not good, affecting the added value of the product. Therefore, it is very necessary to select high quality and large brand fiber laser cutting machine.
8. The round hole is too small. The best scheme for fiber laser cutting machine to cut round hole is 1:1, that is, the ratio of aperture to plate thickness is 1:1. Of course, this ratio means that the larger the aperture, the easier it is to cut high-quality circular holes. Otherwise, when the energy of the fiber laser cutting machine is insufficient, the cutting hole is easy to leave a broken point and the circular hole is not round.
The above is the fiber laser cutting machine cutting round hole is not round, can take the solution. Optical fiber laser cutting machine has been widely used in sheet metal laser processing manufacturers. The traditional punching process relies on the external hard force directly acting on the surface of the workpiece, which is easy to cause low precision and many edge pricks. As long as the optical fiber laser cutting machine can be operated, the round hole can be cut well. In addition, the optical fiber laser cutting machine can also cut Any pattern without opening the mold.
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