Why is the circular hole cut by the laser cutting machine not round?


1. It may be that the light intensity is not adjusted properly, resulting in the final ending not overlapping. 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 skip. , the results do not coincide.

 

2. Then check the hardware: whether there are any problems with the beam, lens, nozzle, etc.

 

3. Check whether the servo motor or the cutting head is loose.

 

4. The air blowing pressure is not suitable

During the blowing process, if the air pressure is too small, edge scraping and carbonization will occur. If the pressure is too high, holes will easily explode. Therefore, this requires the craftsman to cooperate perfectly with the machine and select the appropriate air pressure based on experience, so as to make the cut round holes fuller.

 

5. The round hole is too small

The best solution for cutting round holes with a laser cutting machine is a round hole ratio of 1:1, which means that the ratio of aperture to plate thickness is 1:1. Of course, this ratio means that the larger the aperture, the better the cutting of high-quality circles. holes are easier. Otherwise, when the energy of the fiber laser cutting machine is insufficient, the cutting holes are prone to breakpoint residues and round holes that are not round.

 

6. The servo motor parameters are incorrect

Round holes sometimes appear elliptical or irregular, which is related to the mismatch of XY-axis motion. The direct cause of the mismatch of XY-axis motion is improper adjustment of servo motor parameters. Therefore, the quality of cutting round holes also has certain requirements for the servo motor.

 

7. Caused by accuracy errors of guide rails and screws

If the servo motor parameter error affects the cutting quality, then the accuracy error of the guide rail and screw will also directly cause the round hole accuracy to fall short of expectations. This is related to the strength of the laser cutting machine manufacturer. Usually, some small factories will lie to customers and say that the accuracy of the laser cutting machine can reach 0.1mm, but in fact, in the actual operation process, the quality and effect of laser drilling will be poor. Well, it affects the added value of the product. Therefore, it is very necessary to choose high quality and choose a big brand laser cutting machine.

 

All these parameters are used to identify whether the accuracy, speed and other parameters of cutting circular holes meet the standard requirements, and are sufficient to identify whether the quality of the laser cutting machine purchased is acceptable. Therefore, you must ask clearly when purchasing a laser cutting machine.