2019年5月22日星期三

Analysis of laser engraving machine



In the past 2-3 years, large metal cutting machine manufacturers have sprung up, which can be seen from several large metal processing exhibitions in China. Such a market scale, such manufacturers are coming to the fore, what are the advantages and disadvantages brought to the Chinese metal laser cutting industry?


After learning about the development history of these emerging large-scale laser engraving machine equipment manufacturers, we can easily find that they are mainly transformed from the following manufacturers: the original production of plasma cutting equipment manufacturers, the original production of cutting plotter manufacturers, the original production machinery The manufacturer of the cutting machine, the manufacturer of the original large CNC machine tool, and so on. All of these transformed companies are equipped with YAG or fiber optics as the laser source, and the CO2 laser source that is most suitable for metal cutting is abandoned. In recent years, due to the maturity of laser technology and the industrialization of its supporting equipment, the assembly of laser control systems and lasers has become very easy, and these emerging companies have been able to quickly enter the laser industry that they were not familiar with. The fiber laser cutting machine directly uses fiber optic transmission to connect the cutting head; while the YAG laser cutting machine installs the entire laser on the machine's X-axis and processes it through a cutting head. Furthermore, the external components of the laser cutting machine are easy to purchase and integrate, and the requirements for the production and operation accuracy of the machine tool are not very high. These major factors have led to a low threshold for the laser industry. In addition, some middle and high-end technicians in the original laser industry chose to start their own businesses and set up companies one after another, which also created a group of fast-moving companies in the laser industry.


But such low entry barriers do not mean that these emerging companies can easily take their place in the metal cutting industry. Although the number of manufacturers in the industry is increasing, the laser industry is still monopolized by several giants. They have accumulated many years of technology in the laser field, and have in-depth exploration of related technical indicators such as laser processing technology and process requirements.


After comparing the best in the domestic and international laser industry, it is not difficult to find that these large laser giants are mainly based on CO2 laser light sources. The reason is that high-power CO2 lasers have high processing efficiency and strong cutting ability. These technical indicators are Fiber and YAG lasers can't be reached.


The technical strength of the emerging cutting machine manufacturers lags far behind the traditional laser industry manufacturers with CO2 as the main light source, mainly in:


1 laser source difference. In terms of cutting thin plates, fiber cutting machines can reach the level of CO2 metal cutting machines, but in terms of cutting thick plates, the level of CO2 metal cutting machines cannot be achieved by fiber cutting machines, so CO2 is used in the application of cutting metals. Laser light source is the well-deserved technology mainstream.


2 machine performance differences. Only high-precision machine tools guarantee high-quality cutting results. Cutting machines equipped with CO2 lasers use flying optical paths, which require much higher accuracy for the entire cutting machine than those with fiber and YAG lasers. However, the machine tool technology level of these emerging companies is based on the original level, and they can't meet the requirements of CO2. Therefore, they can only choose the laser light source with lower requirements for the machine tool, and the cutting effect will be the same. Can be imagined.


3 differences in the mastery of the processing technology. The laser processing technology is very complicated. The laser processing precision is very demanding on the dynamic index of the whole structure during high-speed machining, which is not something that the emerging company can master in a short time.


It is understood that these emerging laser companies have caused great trouble to customers. Due to the relatively backward and immature technology, the equipment frequently fails, and the after-sales maintenance is still unable to keep up, and the repairs often lack parts and repairs. The technology is not high, and the after-sales service is not in place. Not only has it lost the customer's reputation, but it has also had a bad impact on the entire laser industry, making customers no longer trust the manufacturers, affecting the development of the entire industry.


Laser application entered China in the early 1990s, which is an emerging industry, but its research and development, like all high-tech industries, requires a difficult, steady and long process. The internationally renowned laser giants have achieved considerable success. The well-known domestic laser companies have at least a decade of development history, and these accumulations and successes are not achieved by the emerging laser companies. The market potential of metal laser cutting machines is huge, and the surrounding industries all want to get a piece of it, which leads to the mixed laser industry, which is mixed. However, it is gratifying to note that in this chaotic situation, there are still many traditional laser companies that are always engaged in the research and development of the laser field like the laser. They are still doing some high-end, high-stability intently and carefully. Sexual laser equipment.