Do you know anything about laser cutting machines? With the development of laser cutting technology, the application fields of laser cutting are becoming more and more extensive, and there are also more and more suitable materials. But can you answer the questions that laser cutting machines often encounter without hesitation? How many questions can you answer?

What is the working principle of a laser cutting machine?

Is laser cutting machine operation dangerous?

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

How to find the focus of a laser cutting machine?

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

What is the cutting thickness of the laser cutting machine?

What are the application ranges of laser cutting machines?

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What is the working principle of a laser cutting machine?

Laser cutting is a thermal cutting method that uses a focused high-power density laser beam to irradiate a workpiece, causing the material at the irradiated area to quickly melt, vaporize, ablate, or reach the ignition point. At the same time, the molten material is blown out by a high-speed airflow coaxial with the beam, and the workpiece is cut open by moving the spot irradiation position through a CNC mechanical system.

Is laser cutting machine operation dangerous?

Laser cutting is a very environmentally friendly cutting method that generally does not pose any harm to the body. Compared to ion cutting and oxygen cutting, laser cutting generates less dust, weak light, and low noise. However, if the correct and safe operation methods are not followed, it can also cause personal injury to the user or damage to the machine.

Be careful of flammable materials when using the machine. Some materials are not allowed to be cut on the laser cutting machine, including foam core materials, any PVC materials, high reflective materials, etc.

2. During the operation of the machine, it is prohibited for the operator to leave without authorization to avoid unnecessary losses.

3. Do not stare at laser processing operations. It is prohibited to observe the laser through binoculars, microscopes, magnifying glasses, etc.

4. Do not store 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 of which are determined by the equipment itself, such as the accuracy of the mechanical system, the degree of workbench vibration, the quality of the laser beam, the influence of auxiliary gases and nozzles, etc; Some are inherent factors of the material, such as its physical and chemical properties, reflectivity, etc; There are also some factors that are selected based on specific processing objects and user quality requirements, and corresponding adjustments are made to determine relevant parameters, such as output power, focus position, cutting speed, and auxiliary gas.

How to find the focus of a laser cutting machine?

Due to the significant impact of laser power density on cutting speed, the selection of focus position is particularly important. The size of the spot after laser beam aggregation is proportional to the focal length of the lens. There are three simple methods for determining the cutting focus in the industrial field:

1. Printing method: Move the cutting head from top to bottom and perform laser beam printing on a plastic plate, with the smallest printing diameter as the focus.

2. Oblique plate method: Use a plastic plate placed at an angle to the vertical axis to pull it horizontally, searching for the minimum point of the laser beam as the focal point.

3. Blue spark method: Remove the nozzle, blow air, and apply a pulse laser to the stainless steel plate, causing the cutting head to move from top to bottom until the maximum blue spark is the focus.

Currently, many manufacturers' machines have achieved automatic focusing. With the automatic focusing function, the processing efficiency of laser cutting machines can be significantly improved: the perforation time of thick plates is greatly reduced; Processing workpieces of different materials and thicknesses, the machine can automatically adjust the focus to the most suitable position.

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

Currently, lasers used for laser processing and manufacturing mainly include CO2 lasers, YAG lasers, and fiber lasers. High power CO2 lasers and YAG lasers are widely used in confidential processing; Fiber lasers based on fiber position matrices have obvious advantages in reducing threshold, oscillating wavelength range, wavelength tunable performance, and have become an emerging technology in the current laser field.

What is the cutting thickness of the laser cutting machine?

At present, the thickness cut by laser cutting machines generally does not exceed 25mm. Compared with other cutting methods, it has significant advantages in cutting materials with precise dimensions below 20mm.

What are the application ranges of laser cutting machines?

Laser cutting machine is widely used in automobile manufacturing, kitchenware industry, sheet metal processing, advertising industry, machinery manufacturing, chassis and cabinet, elevator manufacturing, fitness equipment and other industries with its advantages of wide cutting range, high cutting speed, narrow cutting seam, good cutting quality, small Heat-affected zone, flexible processing, etc. But generally, laser cutting machines are mainly divided into two types: metal cutting and non-metal cutting, and there are also mixed cutting, both metal and non-metal can be used, but it is not recommended to use. The types of laser cutting machines produced by different laser cutting machine production enterprises also differ, and their focus is also different.