Summary of common problems of CNC laser cutting machine and solutions

CNC laser cutting machine is a relatively common type of equipment with high efficiency and high precision. This article will bring you a summary of common problems and solutions. If you have any needs or purchases for laser cutting machines You can use this as a reference or contact us if you have any questions before.

What is the working principle of the laser cutting machine?

Laser cutting is to irradiate a focused high-power-density laser beam on the workpiece to quickly melt, vaporize, ablate or reach the flash point of the material at the irradiated point, and the molten material is blown by the high-speed airflow coaxial with the beam , A thermal cutting method for cutting the starting material by moving the spot irradiation position through the numerical control mechanical system.

Is it dangerous to operate the laser cutting machine?

Laser cutting is an environmentally friendly cutting method, and generally does not cause any harm to the body. Compared with ion cutting and oxygen cutting, the laser cutting process generates less dust, weaker light and lower noise. However, if the correct safe operation method is not followed, it may cause personal injury to the user or damage to the machine.

1. Be careful of flammable materials when using this machine. Some materials, such as foam core materials, PVC materials, highly reflective materials, etc., will not be cut by a laser cutting machine.

2. When the machine is running, the operator is prohibited from leaving without authorization to avoid unnecessary losses.

3. Do not stare at the laser processing operation. It is forbidden to observe the laser with a telescope, microscope, magnifying glass, etc.

4. Do not store any explosive or flammable materials in the laser processing area.

What are the factors that affect the accuracy of laser cutting machines?

There are many factors that affect the accuracy of laser cutting. Some factors are determined by the equipment itself, such as the accuracy of the mechanical system, the degree of vibration of the worktable, the quality of the laser beam, the influence of auxiliary gas and nozzles, etc. There are also factors that the material has, such as the physical and chemical properties of the material, the reflectivity of the material, and the factors that determine the output power, focal position, cutting speed, auxiliary gas and other related parameters. Choose according to the specific processing object and the quality requirements of the user , And make appropriate adjustments.

How does the laser cutting machine find the focus?

The choice of focus position is particularly important, because the laser power density has a great influence on the cutting speed. The spot size after the laser beam is focused is proportional to the focal length of the lens. In the industrial field, there are three simple methods to determine the cutting focus.

1. Printing method: move the cutting head from top to bottom, print the laser beam on the plastic plate, and concentrate on the small print Diametrically.

2. Inclined plate method: Pull the plastic plate horizontally at a certain angle with the vertical axis to find the small spot of the laser beam and focus it.

3. Blue spark method: remove the nozzle, blow air, focus the pulsed laser on the stainless steel plate, move the cutting head from top to bottom, until the blue spark is very large.

Currently, many manufacturers’ equipment has achieved auto focus. The auto focus function can improve the processing efficiency of the laser cutting machine. The drilling time for thick plates is greatly shortened. By processing workpieces of different materials and thicknesses, the machine can automatically and quickly adjust the focus to a better position.

What are the different types of lasers and what are the differences?

Currently, the lasers used in laser processing and manufacturing mainly include CO2 lasers, YAG lasers and fiber lasers. Among them, high-power CO2 lasers and YAG lasers are widely used in confidential processing. Fiber laser based on fiber position has obvious advantages in reducing threshold, oscillation wavelength range, wavelength tuning performance, etc., and has become a new technology in the current laser field.

What is the cutting thickness of the laser cutting machine?

Currently, the cutting thickness of laser cutting machines is generally less than 25mm, and for materials requiring fine cutting dimensions, less than 20mm, which has obvious advantages compared with other cutting methods.

What is the application range of laser cutting machine?

Laser cutting machine is widely used in automobile manufacturing, kitchenware industry, sheet metal processing, advertising industry, due to its advantages of wide cutting range, fast cutting speed, narrow gap, good cutting quality, small heat-affected zone, and small processing flexibility. Machinery manufacturing, chassis cabinets, elevator manufacturing, fitness equipment and other industries.

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