Introduction to the relevant principles of 15w green laser cutting machine equipment

As a new type of tool, laser cutting machine equipment is increasingly used in various industries, including laser cutting machines, laser engraving machines, laser marking machines, laser welding machines, etc. So how is laser cutting used, and how to distinguish between good and bad laser cutting? First, the energy of the laser is concentrated in the form of light into a high-density beam, and the beam is transmitted to the working surface to generate enough heat to melt the material. In addition, the high-pressure gas coaxial with the beam directly removes the molten metal to achieve the purpose of cutting, which shows that the laser cutting process is essentially different from the machining of the machine tool.

532 laser cutting machine

The laser cutting machine uses the laser beam emitted from the laser generator to focus into a high-power density laser beam irradiation condition through the optical path system. The laser heat is absorbed by the workpiece material, and the temperature of the workpiece rises sharply. After reaching the boiling point, the material starts to vaporize A hole is formed, along with the high-pressure air flow, as the relative position of the beam and the workpiece moves, finally the material forms a slit. The process parameters (cutting speed, laser power, gas pressure, etc.) and motion trajectory during slitting are controlled by the numerical control system, and the slag at the slit is blown away by a certain pressure of auxiliary gas.

The quality of laser cutting can be measured by the following 6 standards

Generally speaking, the quality of laser cutting can be measured by the following 6 standards. 1. Cutting surface roughness. 2. Cut slag size. 3. The verticality and slope of the cutting edge. 4. The size of the rounded corners of the cutting edge. 5. Drag after stripes. 6. The working principle of flatness F. Laser is a kind of light. Like other luminous bodies in nature, it is produced by the transition of atoms (molecules or ions, etc.) and is caused by spontaneous radiation. Although the laser is light, it is obviously different from ordinary light in that the laser only relies on spontaneous emission for a very short period of time, and the subsequent process is completely determined by the excitation radiation. Therefore, the laser has a very pure color and almost no divergent directivity. , Very high luminous intensity. The laser also has high coherence, high intensity, and high directivity. After the laser is generated by the laser, it is transmitted by the reflector and irradiated on the processed object through the focusing mirror, so that the processed object (surface) is subjected to strong heat and the temperature increases sharply. The point is quickly melted or vaporized due to high temperature, and the operation track of the laser head is matched to achieve the purpose of processing. The application of laser processing technology in the advertising industry is mainly divided into two working methods: laser cutting and laser engraving. For each working method, there are some differences in the operation process.

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Laser cutting: we can understand it as the separation of edges

Laser engraving: It is mainly carried out on the surface of the object. It is divided into two types: bitmap engraving and vector engraving: bitmap engraving: we first carry out the screen processing of the graphics we need to engrave in PHOTOSHOP and convert them into monochrome BMP format. Then open the graphic file in the dedicated laser engraving and cutting software. According to the material we are processing, we can set the appropriate parameters, and then click Run, the laser engraving machine will engrave according to the dot matrix effect produced by the graphic file. Vector engraving: use vector software such as Coreldraw, AutoCad, Illustrator and other typesetting design, and export the graphics to PLT, DXF, AI format, marking machine, and then use the special laser cutting and engraving software to open the graphic file and send it to laser engraving Processing in the machine. In the advertising industry, it is mainly suitable for the processing of wood, two-color boards, plexiglass, colored paper and other materials. Laser cutting: We can understand it as the separation of edges. For such processing purposes, we should first make the graphics in the form of vector lines in CORELDRAW, AUTOCAD, pneumatic marking machine, and then save it in the corresponding PLT, DXF format, and open the file with the laser cutting machine operating software. According to our The processed material can be run after setting the parameters such as energy and speed. The laser cutting machine will automatically cut according to the flight path generated by the software after receiving instructions from the computer. For example, the existing laser cutting machine can draw a template according to the computer, and then directly input it into the computer to automatically cut the graphics.