There are many problems in the use of metal laser cutting machine, including the error in the process of laser cutting, the poor effect of laser cutting and so on. How did these errors occur? As a professional manufacturer of laser cutting equipment, Wuxi Qingyuan Laser Technology Co., Ltd. now let's answer for you.
The geometric error of workpiece is affected by various reasons. The workpiece surface will produce fluctuation and heating in the cutting process, which makes the surface of thin plate parts easy to deform. Due to the uneven surface, the laser focus changes randomly with the position of the workpiece surface and the ideal position. 2. The cutting thickness of the material exceeds the standard of cutting material. Taking 3000 watts as an example, the thickness of the cutting plate of the laser cutting machine is less than 20 watts. The thinner the plate, the easier the cutting and the better the quality. If the plate is too thick, it will be difficult to cut with a laser cutting machine, and there will be machining accuracy errors during cutting, so it is necessary to determine the thickness of the plate. 3. Programming error in the processing of fiber laser cutting machine, the processing track on the complex surface is fitted with straight lines and arcs. There is an error between the fitting curve and the actual curve, resulting in an error between the relative position of the actual focus and the surface of the processed object and the ideal programming position. Some teaching programming systems may also bring some deviation.
In the cutting process of fiber laser cutting machine, the focus position error will appear in the laser cutting process. There are many factors that change the relative position between the focus and the surface of the processed object, which is also related to the surface finish of the processed product. The clamping mode of the workpiece, the geometric error of the machine tool and the long-term load of the machine tool will deform. The thermal deformation of the workpiece during processing will lead to the deviation between the laser focus position and the ideal given position (programming position). For these random errors, this is inevitable. Only through on-line detection and control can we reduce the error and improve the working accuracy of fiber laser cutting machine.