On the Localization of CNC Machine Tool Abstract: China started to develop CNC technology from 1958, and has now established a certain scale system. Up to now, the numerical control market in China is mostly occupied by foreign numerical control systems. This paper mainly discusses how domestic low-cost CNC machine tools, high-speed and high-efficiency CNC machine tools and heavy CNC machine tools occupy the domestic market. Keywords: domestic CNC machine tools; Low-cost, high-speed and heavy-duty CNC machine tools; After-sales guarantee mechanism Since 1958, China began to study numerical control technology, and established an industrial system with middle and low-grade numerical control machine tools as the mainstay. The ultimate success of NC industrialization will be reflected in the national industrialization and market share of NC machine tools. Up to now, China's numerical control market is mostly occupied by foreign numerical control systems, such as Japanese FANUC system, German Siemens system and other well-known foreign brands occupy a large market in China, while domestic systems are ignored for various reasons. Numerical control technology and equipment are the important foundation of manufacturing modernization. Whether this foundation is solid or not will directly affect a country's economic development and comprehensive national strength, which is related to a country's strategic position. Therefore, we must quickly recover lost ground in the domestic market and make steady progress in the international market in order to win the domestic CNC machine tool market. The following is a brief discussion on the development of low-cost CNC machine tools, high-speed and efficient CNC machine tools and heavy CNC machine tools. First, vigorously develop low-cost CNC machine tools. Low-cost CNC machine tool is a popular CNC machine tool with the function of satisfying users' small batch and multi-variety production (without wasting functions), moderate technical index, good reliability and low price, which can be accepted by small and medium-sized enterprises. This kind of machine tool has become one of the development trends of CNC machine tools in the international market, and it is also a product that many domestic users yearn for. It is more suitable for China's national conditions and has a broad market prospect. However, if we develop low-priced machine tools with foreign numerical control systems (including servo components) according to the traditional thinking, it is difficult to reduce the price to a level acceptable to the majority of users. Therefore, adopting the new integrated domestic data system proposed in this paper will be the most promising way to develop high-performance and low-cost CNC machine tools. As long as there is a certain batch, the price of popular CNC lathes in China can be controlled within 6.5438+10,000 yuan, the three-coordinate CNC milling machine can be controlled around150,000 yuan, and the machining center can be controlled around 20,000 yuan. Domestic CNC machine tools at this price will have strong competitiveness. Second, accelerating the development of high-speed and efficient high-speed CNC machine tools is another major trend in the development of CNC machine tools. There are several technical ways to develop high-speed and high-efficiency CNC machine tools: ① By increasing cutting speed and feed speed, we can achieve the processing effect of doubling the production efficiency and effectively improving the surface processing quality and accuracy of parts. This method can also solve the efficient processing problems of some special materials (such as aluminum-titanium alloy, die steel, quenched steel) and parts with special shapes (such as complex thin-walled parts) that are difficult to solve in conventional processing. (2) The installation times of workpieces can be reduced through process combination, which can effectively shorten the handling and clamping time. If the five-face five-axis machining center and vertical lathe are combined into a universal machining center, most (or all) machining tasks of parts can be completed by clamping at one time. (3) By adopting high-speed and high-precision circumferential milling, new machining methods such as spiral trajectory interpolation and direct tapping without drilling bottom hole can be completed, which can greatly reduce the number of tool changes and improve machining efficiency. (4) Develop the intelligent positioning processing function of CNC machine tools, eliminate the dependence on precision fixture and manual alignment, and effectively shorten the preparation time for single piece and small batch processing. Under the realistic conditions of our country, if we follow the traditional thinking, it is difficult to realize the above-mentioned ways. We must base ourselves on the national conditions, combine the reality, be brave in innovation and boldly explore new ways. Considering that the general structure of conventional CNC machine tools basically adopts the scheme that the workpiece and the tool move together along their respective guide rails, on the one hand, it is difficult for moving parts to obtain higher feed speed because of the lack of rigidity of the transmission link of the machine tool and the large friction resistance in the guide rails; On the other hand, because the total mass of workpiece, fixture and worktable is relatively large, it is difficult to obtain high acceleration. In addition, the traditional machine tool structure is series open chain structure, with many parts and complicated structure. Because of the connection gap between the cantilever part and the connecting rod, it is difficult to obtain higher overall stiffness, so it is difficult to adapt to the special requirements of high-speed and efficient machining. Therefore, in the development of domestic high-speed and high-efficiency CNC machine tools, a new structure suitable for high-speed and high-efficiency machining centers can be adopted, that is, the workpiece is fixed, the parallel short chain composed of linear motors directly drives the spindle and the cutter to move, and the combination of high-speed and high-precision transmission and high-rigidity support. The high-speed and high-efficiency CNC machine tool with this structure not only has high speed and stiffness, but also can achieve higher machining accuracy and quality than the conventional machine tool if it is properly handled in transmission and control. But also has obvious advantages of simple mechanical structure, high standardization degree of parts, low manufacturing cost, easy economic mass production and the like. Therefore, the development of high-speed and efficient CNC machine tools along this line of thinking will be a road that conforms to the national conditions and is easy to succeed. Third, break through the design and manufacturing technology of heavy CNC machine tools. Heavy CNC machine tools (especially multi-coordinate heavy CNC machine tools) are important key equipment in national economy and national defense production and belong to strategic materials. It is impossible for foreign countries to sell us truly advanced heavy CNC machine tools. Therefore, we must rely on our own strength to solve the problems in the development of CNC products in China in the next century. The development of heavy CNC machine tools must have a solid foundation. In the process of localization of CNC machine tools, we should constantly sum up experience, strengthen the research on basic technologies and key technologies, give full play to the advantages of combining domestic and Industry-University-Research, and make joint efforts with various departments to make breakthrough progress in a short time. Fourth, establish a strong after-sales guarantee mechanism. As typical high-tech products, CNC system and CNC machine tools are very important for users' technical support and service. Besides reliability, another big problem is the lack of strong technical support and services. Users spend a lot of money to buy CNC machine tools or CNC systems, but once there is a problem, it is called daily failure, and the ground is invalid. Even if the manufacturer agrees, the maintenance personnel can not be in place in time, and the technical level of maintenance personnel is uneven. In this era of efficiency, such after-sales service is not feasible. Who will dare to buy our products at this rate? Therefore, technical support and service to users should become our important daily work, so that we can further advance in the market and have a strong rear as a guarantee. Therefore, in order to win the overall market competition of CNC products, we must establish a strong after-sales service foundation with technical support and service as the core.