What are the factors affecting the processing accuracy of metal laser cutting machine?

Compared with the traditional metal cutting and processing process, the processing accuracy of metal laser cutting machine is higher, the section effect is better, and there is no need for secondary processing, which is the reason why many enterprises choose metal laser cutting machine. However, many enterprises have found that the cutting accuracy of the fibre laser cutting machine is sometimes not ideal, affecting the subsequent processing process. What are the factors that affect the processing accuracy?

1. Processing materials

When the laser cutting machine is processing metal, the cutting accuracy of different materials is different. Even for the same material, if the material composition is different, the cutting accuracy will be different. Therefore, the workpiece material also has a certain impact on the laser cutting accuracy. Generally speaking, the smoother the material is, the higher the machining precision is.

Therefore, when processing different metal materials, samples can be made in advance to find out the most suitable parameter settings for such materials.

2. Shape of the laser beam

The laser beam of a metal laser cutting machine is conical, so the cutting slit is also conical. The shape of the laser beam is also an important factor affecting the cutting accuracy of the metal laser cutting machine. The smaller the spot after the laser beam is concentrated, the smaller the kerf will be, and the higher the processing accuracy will be.

Under the conditions of this conical laser beam, the greater the thickness of the workpiece, the lower the precision, and therefore the larger the kerf. Therefore, when processing different thicknesses of metal, it is necessary to select the appropriate laser power to obtain better processing results.

3. Precision of the workbench

When the laser metal cutting machine is processing, the worktable will vibrate with the vibration of the laser head. The higher the cutting accuracy, the higher the cutting accuracy with stable linear guide and stepping motor on the high-precision workbench; if the workbench is not flat or other reasons, it will also affect the processing accuracy of the fibre laser cutting machine.

4. Auxiliary gas and nozzle

In the processing of laser metal cutting machine, auxiliary gas and nozzle play a role in cleaning and controlling the cutting speed. Uneven pressure and temperature in the gas flow will cause changes in the density of the gas flow field, which will make the focusing of the beam energy dry, resulting in refocusing or beam dispersion, affecting the accuracy of metal cutting.