Sheet metal punching traditional practices are the use of punch press, relying on the external hard force directly on the surface of the workpiece, easy to cause low precision and edge rows of spikes and other shortcomings , but the emergence of laser cutting technology has changed the current disadvantage of the situation, more and more processing companies began to choose the laser to cut round holes, the processing of its smooth cross-section, and the diameter of the size of the diameter can be changed at any time, the operation of the flexibility of a high degree of flexibility, but with the Modern processing methods, but also need to drive a skillful operator, improper operation will cause round also irregular.
1. It may be that your light intensity is not well adjusted, resulting in the end of the end does not overlap, generally speaking, the difference between the maximum light intensity and the minimum light intensity should not be more than 5% and do not regulate the speed too fast, too fast, it may also be jumping frames, the results do not overlap.
2. Then look at your hardware: beam, lens, nozzle, etc., there is no problem
3. servo motor to see, or cutting head fixed is not loose
4. blowing air pressure is not suitable for the blowing process, when the air pressure is too small will appear edge scraping slag, carbonization phenomenon, too much pressure and easy to burst the hole. So this requires the process of proofing division and machine perfect cooperation, with experience to choose the right air pressure, so that the cutting of the round hole more full.
5. round hole is too small laser cutting machine to cut round holes the best program is the ratio of round holes 1:1, that is, the ratio of hole diameter and plate thickness of 1:1, of course, this ratio, that is to say, the larger the hole diameter, cut out high-quality round holes more easily. Otherwise, when the fiber laser cutting machine energy is insufficient, cutting small holes is easy to point out the breakpoint residue and the phenomenon of round holes are not round.
6. servo motor parameters are wrong round holes will sometimes appear oval or irregular phenomenon which is related to the XY axis motion mismatch, and lead to XY axis motion mismatch is the direct cause of the servo motor parameters are not adjusted properly. So the quality of cutting round holes, the servo motor also has certain requirements.
7. Guide and screw precision errors lead to if the servo motor parameter error affects the cutting quality, then the guide and screw precision error will also directly lead to the round hole precision can not meet expectations. This is related to the strength of the laser cutting machine manufacturers, usually, some small factories will lie to customers that the laser cutting machine accuracy can reach 0.1mm, but in fact, in practice, in the process of operation, it will make the laser perforation quality and effect is not good, affecting the added value of the product. So it is very necessary to choose high quality as well as choose a big brand laser cutting machine. All these parameters are used to identify the precision of cutting round holes, speed and other parameters to meet the standard requirements, are sufficient to identify the quality of the purchased laser cutting machine. Therefore, customers must keep their eyes open during the purchase of laser cutting machines.
Four major factors affecting the cutting accuracy of fiber laser cutting machine
First, the size of the laser generator laser cohesion: after gathering if the spot is smaller, the cutting accuracy is higher, if the gap after cutting is also smaller. It means that the fiber laser cutting machine is high precision and good quality. However, the beam from the laser is tapered, so the gap cut out is also tapered. Under this condition, the greater the thickness of the workpiece, the lower the precision will be, so the larger the slit. Fiber laser cutting machine
Second, the precision of the worktable: fiber laser cutting machine worktable if the precision is very high, the precision of the cutting is also high. Therefore, the accuracy of the table is also an important factor in measuring the accuracy of the laser generator.
Third, the laser beam cohesion into a cone: fiber laser cutting machine cutting, laser beam is tapered down, then if the thickness of the cut workpiece is larger, the precision of cutting will decline, then cut out the gap will be larger.
Fourth, the cutting of different materials: will also affect the accuracy of the fiber laser cutting machine. In the same case, the fiber laser cutting machine cutting stainless steel and cutting aluminum its accuracy will be different, stainless steel cutting accuracy will be higher, and the cutting surface will be smooth.