Laser cutting machine cutting technology accuracy is a key indicator to measure its performance, the following from a number of aspects for you to elaborate.


The concept and importance of precision
The cutting accuracy of laser cutting machine refers to the degree of deviation between the actual cutting size and the designed size. High-precision cutting can ensure the dimensional accuracy of processed parts, for aerospace, electronics and other industries that require high precision of parts, precision directly affects the quality and performance of products. For example, in the manufacture of aircraft engines, high-precision machining of parts can ensure the efficient operation and reliability of the engine.
Factors affecting precision
Laser beam quality: the laser beam mode, spot size and energy distribution have an important impact on the cutting accuracy. Base mode (TEM00) laser beam spot is small and concentrated energy, can achieve finer cutting, cutting accuracy is higher; while the high-order mode laser beam energy distribution is not uniform, will lead to the cutting edge quality decline, precision reduction.
Machine accuracy: the stability of the mechanical structure of the machine tool, the straightness of the guide rail and positioning accuracy are directly related to the cutting accuracy of the laser cutting machine. High-precision guide rail and screw drive system can reduce the error in the movement process and ensure the precise movement of the cutting head, thus improving the cutting accuracy. For example, the use of hydrostatic guideway machine tools, the smoothness of its movement is good, can effectively improve the cutting accuracy.
Control system: advanced CNC system can achieve more accurate motion control. The smaller the pulse equivalent of the control system, the more precise the position control of the cutting head. At the same time, the control system with automatic compensation function can compensate for various errors in the cutting process in real time, which further improves the cutting accuracy.
Common precision indicators
Dimensional accuracy: The dimensional accuracy of general laser cutting machines can reach ±0.05 - ±0.1mm, and for some high-end equipment, it can even reach below ±0.01mm under specific conditions. For example, when cutting thin sheet metal, a good quality laser cutting machine can control the dimensional deviation within a very small range.
Cutting seam width: The smaller the width of the cutting seam, the higher the cutting accuracy. Normally, the cutting width of laser cutting machine is between 0.1 - 0.3mm, and the cutting width of fibre laser cutting machine is relatively narrower, which can be as low as about 0.1mm.
Perpendicularity: The perpendicularity between the cutting surface and the surface of the plate is also an important indicator of cutting accuracy. Good perpendicularity can ensure the accuracy of the cut parts in the assembly. Generally speaking, the perpendicularity deviation of laser cutting machine can be controlled at 0.1-0.3mm/m.
Methods to improve accuracy
Optimise laser parameters: According to different materials and cutting requirements, reasonably adjust the laser power, pulse frequency, cutting speed and other parameters to obtain the best cutting effect and accuracy. For example, when cutting stainless steel, appropriately reducing the cutting speed can reduce the heat-affected zone and improve the cutting accuracy.
Regular maintenance of equipment: Regularly maintain and calibrate the optical system, mechanical transmission system and control system of the laser cutting machine to ensure that the equipment is in good operating condition, so as to ensure the stability of cutting accuracy. For example, clean the laser lens regularly and check the lubrication of the guide rail.