There are many problems when using a metal laser cutting machine, including errors in the laser cutting process, and the laser cutting effect is not good. So how do these errors happen?

1. Workpiece geometric error: Due to various reasons, the surface of the processing object is uneven, and heat is generated during the cutting process, which makes the surface of the thin plate parts easy to deform. Due to the uneven surface, the laser focus varies randomly with the position and ideal position of the surface of the object being processed.

2. The cutting thickness of the material exceeds the standard: the cutting thickness of the material exceeds the standard. Take 3000W as an example: the thickness of the board that the laser cutting machine can cut is less than 20 thickness. The thinner the board, the easier it is to cut and the better the quality. If the board is too thick, the laser cutter will be more difficult to cut. Under the condition of ensuring cutting, there will be errors in machining accuracy, so the thickness coefficient of the plate must be determined.

3. Programming error: During the processing of the metal laser cutting machine, the processing trajectory on the complex surface is fitted by straight lines, arcs, etc. There is an error between these fitted curves and the actual curves. These errors become the actual focus and there is an error between the relative position of the machined target surface and the ideal programmed position. Some instructional programming systems also introduce some bias.

4. The focus position error occurs in the laser cutting process: In the cutting process of the metal laser cutting machine, there are many factors that will change the relative position between the focus and the surface of the object being processed, which is also related to the surface smoothness. The shape clamping method of the machined product, the geometric error of the machine tool and the long-term load of the machine tool will deform. Thermal deformation of the workpiece during machining will cause the laser focus position to deviate from the ideal given position (programmed position).

Released by Jinan APEX Machinery Equipment Co., Ltd.