Compared with traditional processing technology, metal laser cutting machine has higher processing accuracy, better cross-section effect, and no secondary processing is required, which is also the reason why many enterprises choose metal laser cutting machine. However, many enterprises have found that the cutting accuracy of laser cutting equipment is sometimes not ideal, affecting the subsequent processing flow. So what factors affect the machining accuracy?
1. Processing material
When laser cutting machine processes metal, the cutting accuracy is also different in the face of different materials. Even for the same material, if the composition of the material is different, the cutting accuracy will be different. Therefore, the workpiece material also has a certain impact on the laser cutting accuracy. Generally, the smoother the material, the higher the machining accuracy.
Therefore, when processing different metal materials, samples can be made in advance to find out the parameter settings more suitable for such materials.
2. Shape of laser beam
The light beam emitted by the laser of the metal laser cutting machine is conical, so the cut gap is also conical. The shape of laser beam is also a major factor affecting the cutting accuracy of metal laser cutting machine. The smaller the spot after laser beam aggregation, the smaller the slit and the higher the machining accuracy.
Under the condition of this conical laser beam, the greater the thickness of the workpiece, the lower the accuracy will be, so the larger the slit will be. Therefore, when processing metals with different thicknesses, choosing the appropriate laser power can obtain better results.
3. Accuracy of workbench
When the metal laser cutting machine processes, the workbench vibrates with the vibration of the laser head. High precision worktable with stable linear guide rail and stepping motor, the higher the precision of cutting; If the workbench is uneven or for other reasons, it will also affect the processing accuracy of the laser cutting machine.
4. Auxiliary gas and nozzle
In the process of metal laser cutting machine, auxiliary gas and nozzle play the role of cleaning and controlling cutting speed. The uneven pressure and temperature in the air flow will cause the change of the density of the air flow field, which will dry the focusing of the beam energy, cause refocusing or beam divergence, and affect the metal cutting accuracy.