Technical characteristics and application prospect of laser automatic cutting equipment

8. Laser cutting is currently the most widely used laser processing technology, in many foreign countries, for example, automobile manufacturing and machine tool industry are using laser cutting sheet metal parts processing. With the high-power laser beam quality continues to improve, laser cutting of the processing of a wide range of objects, including almost all of the metal and non-metallic materials. For example, you can use laser to high hardness, high brittleness, high melting point of the metal material complex shape of the three-dimensional parts cutting, which is the advantage of laser cutting.

To metal cutting, for example, a variety of processing means a flourishing trend, including laser, flame cutting, EDM, line cutting, water cutting. All kinds of cutting tools have their own advantages, but also there are some limitations. From today's cutting-edge technology, laser cutting technology is undoubtedly the best cutting method. In addition to the features described above, the laser cutting also has low noise, pollution and other advantages. With the growing awareness of environmental protection, coupled with the laser source manufacturing costs decline, so that the advantages of laser cutting technology is more prominent. The use of laser cutting technology to replace the flame and plasma cutting, cutting technology will become the future development trend.

Laser cutting is to use a focusing lens to focus the laser beam on the surface of the material to melt the material, while the laser beam with the coaxial compressed gas blown away the molten material, and the laser beam and material along a certain trajectory for relative movement, thus forming A certain shape of the slit. Laser cutting is the world's advanced cutting technology. Its biggest advantage is due to the laser spot is small, the energy concentration, so cutting the slot is small, no dross, almost no thermal deformation, cutting surface smooth. Overall, the laser cutting process and other cutting processes such as flame cutting, plasma cutting, high-pressure water jet cutting compared with the following characteristics:
1. High precision: positioning accuracy of 0.05mm, repeat positioning accuracy of 0.02 mm
2. Narrow slit: the laser beam focused into a small spot, so that the focus to achieve a high power density, the material quickly heated to the degree of evaporation, the formation of holes in the evaporation. As the beam and the material relative to the linear movement, so that the formation of continuous narrow width of the kerf. Incision width is generally 0.10 ~ 0.20mm.
3. Cutting surface smooth: cutting surface without burr, cut surface roughness is generally controlled within Ra12.5.
4. Fast: cutting speed of up to 10m / min, the maximum positioning speed of up to 70m / min, much faster than the line cutting.
5. Cutting quality: no contact cutting, cutting edge heat affected little, basically no hot deformation of the workpiece, completely avoid the material when the collapse of the formation of punching, cutting generally do not need secondary processing.
6. Does not damage the workpiece: the laser cutting head will not be in contact with the material surface to ensure that does not scratch the workpiece.
7. Not affected by the hardness of the material being cut: the laser can be steel, stainless steel, aluminum alloy plate, carbide and other processing, no matter what kind of hardness, can be no deformation cutting.
8. Not affected by the shape of the workpiece: laser processing flexibility, and can process any graphics, you can cut pipe and other profile.
9. Can be non-metallic cutting: such as plastics, wood, PVC, leather, textiles, plexiglass and so on.
10. Saving mold investment: no need to mold, no mold consumption, no need to repair the mold, save the replacement of mold time, thus saving processing costs and reduce production costs, especially for large products processing.
11. Material savings: the use of computer programming, can be different shapes of products for the entire sheet of material sets of cutting, to maximize the utilization of materials.
12. Improve the speed of new product development: product drawings, immediately after the laser processing, in the shortest possible time to get new products in kind.
13. Safety and environmental protection: laser processing slag very little noise minimal, clean, safe, pollution-free, greatly improving the working environment.

Cutting industry development is always inseparable from the development of metal manufacturing enterprises, through close cooperation with these enterprises and technical exchanges, to the cutting industry has brought a lot of different production concepts and challenging experience and technology. Modern metal manufacturing enterprises in order to optimize the structural properties of their products, making the product more economical, shorter production cycle in the international market more competitive. Which must be on its original manufacturing technology and production processes put forward new ideas and requirements, part of the vision and requirements will be achieved in the Cutting Equipment, so our cutting industry has put forward new issues and new design concepts.
Compared with the international laser processing system, China's laser processing system there is still a big gap, but China's laser equipment manufacturing enterprises are steadily entering the power savings, the domestic application market also has great room for development, the laser industry in China will be unprecedented development. Comprehensive reasons, the following aspects:
1. National attention, government departments at all levels are actively concerned about the planning, project, a number of funds are being injected. In particular, the state stressed that the main project by the colleges and universities, scientific research departments to switch to the main business, which promoted the independent innovation of enterprise products, technology upgrades.
2. Various types of domestic manufacturing industry to accept the laser processing technology, which allows them to increase the technological content of products to speed up the replacement product, using it to achieve the "agile manufacturing" level to meet the market for "personalized" products.
3. Domestic industry has gradually formed a complete set of laser components supporting enterprises slowly, all kinds of characteristics of the laser processing system manufacturers have established four domestic laser processing equipment manufacturing industry has formed, they are mainly distributed in central China ; The Pearl River Delta; the Yangtze River Delta and the Bohai Sea economic development area.
4. Some of the world's leading laser processing manufacturers to invest and build factories in China; some domestic joint production, the general trend is to enter, the formation of international competition in the country.
5. Domestic laser in the main aspects of the gradual clearance, access to market applications. Such as high-power axial-flow CO2 lasers, small and medium-power metal-cavity RF CO2 lasers, semiconductor-pumped solid-state lasers, fiber lasers, and double-frequency DPLs and high-power diode modules, are poised to enter the market. . For the domestic appreciation of the laser processing to create new applications to create the conditions.

Laser processing technology has been a national key support and promote the application of a high-tech, especially the Government stressed the need to revitalize the manufacturing sector, which gives laser processing technology applications to bring development opportunities. In the country to develop long-term development plan, turn laser processing as a key support technology, because it involves national security, national defense construction, high-tech industrialization and the development of cutting-edge technology, which laser processing to a high Attention, will also give the laser processing machine manufacturing and upgrading of great business opportunities. Because of the various domestic market publicity, display, popularization and training for users, but also greatly to the laser processing market broadening to broaden the domestic users to use this advanced manufacturing technology, confidence and determination to promote the laser processing to the more More and more widely used external environment, which is what we often say that the market affects. The market affects and promote the laser processing machinery sales, the formation of a chain reaction. Because of this promotion, laser processing machine has now formed more than 200 manufacturing enterprises, employing nearly 20,000, of which about 50% of scientific and technical personnel, with senior titles accounted for about 30% of employees, has formed a considerable strength Of the industrial team. At the same time, it also attracted many laser processing equipment manufacturers around the world's attention and follow-up, the domestic market has been internationalized.