Laser cutting machine cut round hole why can not round?

Classification：Technical Support

Release Date：2023.02.22

Sheet metal punching is the traditional practice of using punch stamping, relying on the external hard force directly on the surface of the workpiece, easy to cause too low accuracy, edge puncture and other shortcomings. But the emergence of laser cutting technology has changed the current disadvantageous situation, more and more processing enterprises began to choose laser to cut round hole its processing smooth section, and the diameter size can be changed at any time, high flexibility of operation, but with modern processing methods, but also need a driving skilled operator, improper operation will cause irregular circle. Xiaobian and we comb the problems that may exist.

1. It may be that the light intensity is not adjusted well, resulting in no coincidence at the end. 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.

2. Then look at the hardware: beam, lens, nozzle and so on.

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

4. Air pressure is not suitable for blowing: in the process of blowing, when the air pressure is too small, the edge scraping and carbonization will occur, and the pressure is too large and easy to burst holes. Therefore, this requires the perfect cooperation between the process proofing division and the machine, and the selection of appropriate air pressure by experience, so as to make the round hole more full of cutting.

5 round hole is too small laser cutting machine cutting round hole the best scheme is round hole ratio 1:1, that is to say the aperture and plate thickness ratio is 1:1, of course, this proportion, that is to say the aperture is larger, cut out high-quality round hole is easier. Otherwise, when the energy of the fiber laser cutting machine is insufficient, the hole is easy to cut the point of the breakpoint residue and the circular hole is not round

6. Wrong servo motor parameters Sometimes oval or irregular phenomenon will appear in the round hole, which is related to the mismatch of XY axis motion, and the direct cause of XY axis motion mismatch is the improper adjustment of servo motor parameters. So cutting round hole quality, servo motor also has certain requirements.

7. Guide rail and lead screw accuracy error If the servo motor parameter error affects the cutting quality, then the guide rail and lead screw accuracy error will directly lead to the circular hole accuracy can not reach the expected. This is related to the strength of laser cutting machine manufacturers, usually, some small factories will cheat customers that laser cutting machine accuracy can reach 0.1mm, but in fact, in the actual operation process, will make laser punching quality and effect are not good, affect the added value of products. So it is necessary to choose high quality and large brand laser cutting machine.

All these parameters are used to identify whether the precision, speed and other parameters of cutting round holes meet the requirements of the standard, are enough to identify whether the quality of the laser cutting machine purchased is passed. So in the process of buying laser cutting machine must be open eyes.

Four factors affecting the cutting accuracy of fiber laser cutting machine

The size of laser condensation of laser generator: if the spot is smaller after aggregation, the cutting precision is higher, and if the gap is smaller after cutting. It shows that the fiber laser cutting machine has high precision and good quality. But the laser beam is tapered, so is the slit cut out. Under this condition, the greater the thickness of the workpiece, the lower the precision will be, so the larger the slit.

Precision of the table: If the precision of the fiber laser cutting machine table is very high, then the precision of cutting is also increased. Therefore, the accuracy of the table is also an important factor to measure the accuracy of the laser generator.

Laser beam condensed into a cone: fiber laser cutting machine cutting, laser beam is conical down, then if the thickness of the cutting workpiece is larger, the accuracy of cutting will be reduced, then the gap will be larger.

Different cutting materials: will also affect the accuracy of fiber laser cutting machine. In the same case, the precision of fiber laser cutting machine cutting stainless steel and aluminum will be different, the precision of stainless steel cutting will be higher, and the section will be smooth.