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Internal and external factors that affect the cutting accuracy of laser cutting machines

by:VENTECH     2022-01-16

When many people buy a laser cutting machine, they all care about the accuracy of the machine. To a large extent, accuracy has become a standard for measuring the quality of a machine. There are many factors that affect the accuracy of laser cutting. Of course, there are factors of the equipment itself, but at the same time, the accuracy also changes with different factors such as materials and materials.

1. External factors:

1. Cutting material: Under the same circumstances, the cutting accuracy of different materials is slightly different, even if it is The same material, if the composition of the material is different, the cutting accuracy will also be different. Generally speaking, under the same conditions, the smoother the material, the higher the cutting accuracy;

2. Assist gas and nozzle: During the laser cutting process, the assist gas and nozzle play a certain degree of cleaning And the role of controlling the cutting speed. If there is uneven pressure and temperature in the airflow, it will cause changes in the density of the airflow field. Such a density gradient results in a change in the refractive index in the field, thereby constricting the focus of the beam energy, causing refocusing or beam divergence.

2. Factors of the equipment itself:

1. The quality of the laser beam: laser The smaller the beam spot is, the smaller the slit and the higher the processing accuracy;

2. Vibration degree of the worktable: During laser cutting, the worktable vibrates with the vibration of the laser head. A high-precision worktable with a stable linear guide and a stepping motor will increase the cutting accuracy;

It is important to realize that the accuracy of the laser cutting machine is not only It is related to the equipment itself, but also related to external factors. When we use the laser cutting machine, we must set and adjust the relevant parameters of the equipment according to the specific processing materials and the quality requirements of the user, such as: power, focus position, cutting speed, auxiliary gas, etc., in order to Achieve the product accuracy requirements required by users.

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