Sheet metal punching is usually made by punching with a punch, but it is gradually eliminated due to its low accuracy and many burrs. With the continuous development of laser cutting machines, more and more enterprises begin to use laser to cut circular holes. Not only the cutting section is smooth, but also the aperture can be changed at any time, and the processing flexibility is very high.
However, laser cutting circular holes is not as simple as everyone imagined. Irregular cutting circular holes and insufficient verticality also happen from time to time. Therefore, the following is about cutting round holes to analyze the reasons and precautions.
Round hole is too small
Laser equipment cutting 1:1 holes is the best scheme. The larger the hole diameter, the better. When laser cutting machines with insufficient capacity cut small holes, there will be irregular round holes and too many breakpoints.
2) the gas pressure is too high or too low
If the gas pressure is too high, the hole will explode, and if the pressure is too low, the cutting edge will be rough and the burning will be serious. Choosing proper gas pressure is one of the reasons to solve the irregularity of circular hole cutting.
3 servo motor parameters
Many parameters of the servo motor are related to circular arc motion. Improper parameters and mismatched X and Y axis movements will cause ellipses or irregular shapes in cutting circular holes.
(4) the accuracy of the lead screw or guide rail is not enough
The technical strength and workers' level of some small factories are not high, and the precision of the laser cutting machine produced can not reach 0.1mm, so the precision of the circular hole cut can not meet the requirements.
Therefore, it is suggested that in identifying the quality of the laser cutting machine, it is possible to identify whether the quality of the laser cutting machine to be purchased is up to standard by observing the laser cutting round holes. Whether cutting accuracy, speed and other parameters meet the standard.