There will be many problems in the use of metal laser cutting machines, including errors in the laser cutting process, poor laser cutting results, etc., so how do these errors occur? Here is the answer for everyone.
1, workpiece geometric error
Due to various reasons, the surface of the processed object is undulating, and heat will be generated during the cutting process. In this way, the surface of the thin plate part is easily deformed, and due to the uneven surface, the position of the laser focus and the surface of the processed object will also be different. The ideal position changes randomly.
2, the cutting thickness of the material exceeds the standard
The cutting material thickness exceeds the standard. The thinner the sheet, the easier it is to cut,
The better the quality. If the sheet is too thick, the laser cutting machine will be more difficult to cut. Under the condition of ensuring the cutting, there will be errors in the processing accuracy, so the thickness of the sheet must be determined.
3, programming errors
During the processing of the fiber laser cutting machine, the processing trajectory on the complex curved surface is fitted by straight lines, arcs, etc. There are errors between these fitted curves and the actual curves. These errors make the relative position of the actual focus and the surface of the processed object and An error occurs in the ideal programming position. And some teaching programming systems will also introduce some deviations.
4. Focus position error during laser cutting
In the cutting process of the fiber laser cutting machine, there are many factors that cause the relative position between the focus and the surface of the processed object to change, which are also related to the surface smoothness of the processed product, the clamping method of the workpiece, the geometric error of the machine tool, and the long time of the machine tool. Deformation of the load, thermal deformation of the workpiece during processing, etc. will cause the laser focus position to deviate from the ideal given position (programmed position).
These random errors are unavoidable, and only through online detection and control to reduce the generation of errors, so as to improve the working accuracy of the fiber laser cutting machine.