There are many problems in the use of metal laser cutting machine, including errors in the laser cutting process and poor laser cutting effect. How did these errors come about? Now, the editor will answer for you.
What can cause errors in the laser cutting machine?
1. Geometric error of workpiece
Due to various reasons, the surface of the object to be processed is uneven, and heat will be generated during the cutting process, which makes the surface of the thin plate part easy to deform, and because the surface is uneven, it will lead to surface deformation. The laser focusing and the position and ideal position of the machined object surface will vary randomly.
2. The cutting thickness of materials exceeds the standard
The thickness of the cutting material exceeds the standard. Take 3000W as an example: the plate thickness cut by laser cutting machine is less than 20. The thinner the plate, the easier it is to cut,
The better the quality. If the plate is too thick, the laser cutting machine is difficult to cut. In the case of cutting, the machining accuracy will have errors, so the thickness coefficient of the plate should be determined.
3. Programming error
In the process of optical fiber laser cutting machine, the processing path of complex curved surface is composed of straight lines, arcs, etc. There are errors between these fitted curves and the actual curves. These errors will lead to errors between the relative position of the actual focus and the surface of the machined object and the ideal programmed position. And some teaching programming systems will introduce some deviations.
4. Generation of focus position error in laser cutting
In the cutting process of optical fiber laser cutting machine, there are many factors that cause the relative position of the focus and the surface of the object to be processed to change, which is also related to the surface smoothness of the product to be processed. The clamping method of the workpiece, the geometric error of the machine tool, the deformation of the machine tool under long-term load, and the thermal deformation of the workpiece during processing will all cause the deviation between the laser focusing position and the given ideal position (programming position).
These random errors are unavoidable and can only be reduced through online detection and control to improve the working accuracy of the optical fiber laser cutting machine.
