How To Choose The Laser Cutting Machine To Process The Puncture Point?
Generally speaking, when the design part does not have roughness requirements for the surface cutting fracture, you can not do manual processing during the fiber laser cutting programming, and let the control software automatically generate the puncture point. However, when the design has a higher roughness requirement on the cut section of the part to be processed, this problem should be noted. It is usually necessary to manually adjust the starting position of the laser beam when programming the laser cutting program, that is, manually adjust the puncture point control. At this time, we need to move the puncture point originally generated by the laser program to a reasonable position as needed to meet the requirements for the surface accuracy of the processed parts.
We know that the working principle of the laser beam during fiber laser cutting processing is as follows: In the processing process of the fiber laser cutting machine, the material forms a pit in the center after continuous laser irradiation, and then the working airflow coaxial with the laser beam is very strong. The molten material is quickly removed to form a hole. This hole is similar to the threading hole of wire cutting. The laser beam uses this hole as the starting point for contour cutting. Normally, the laser beam travel direction of the light path is perpendicular to the tangent direction of the cut contour of the processed part.
Therefore, when the laser beam starts to penetrate the steel plate and enters the contour cutting of the part, the cutting speed will have a big change in the vector direction, that is, the 90° rotation of the vector direction is determined by the tangent line perpendicular to the cutting contour. The direction turns to coincide with the tangent of the cutting contour, that is, the angle with the tangent of the contour is 0°. In this way, a rougher cutting surface will flow down the cutting section of the processed material. This is mainly due to the rapid change of the vector direction of the laser beam during the movement in a short time. Therefore, it is necessary to pay attention to this aspect when using metal laser cutting to process parts.
