In 2005, China's machine tool output reached US$5.1 billion, ranking third in the world, with 59,600 CNC machine tools. Behind the long-term development, compared with the machine tool industry in developed countries, the gap is still obvious, especially the key functional components represented by electric spindles, both in terms of product variety, technical level, reliability and industrialization. There is a clear gap, and 60% have to rely on imports, which has become the soft underbelly restricting the development of CNC machine tools in China.
High-speed spindle system has always been one of the three high-tech CNC machine tools. With the rapid development of numerical control technology and cutting tools, more and more mechanical manufacturing equipment is constantly developing to high speed, high precision, high efficiency and high intelligence. The built-in electric spindle unit, referred to as the electric spindle, has become the most suitable for the above. One of the core functional components of CNC machine tools for high performance applications. Especially in many advanced products such as multi-axis linkage, polyhedral machining, parallel machine tools, and compound machining machines, the excellent characteristics of the electric spindle are that other types of spindle units cannot be replaced.
The electric spindle is a high-tech product that integrates the machine tool spindle and the spindle motor. The electric spindle system consists of an electric spindle, a drive controller, an encoder, and a communication cable. The technical level of the electric spindle and the performance of the performance directly determine and affect the technical level and performance of the CNC machine tool, and also limit the development speed of the host.
The development of domestic electric spindles is not satisfactory
Compared with the long-term development of CNC machine tools, the development of domestic electric spindles has lagged behind, which has aroused the attention of the industry and relevant national ministries.
Some experts pointed out that the proportion of electric spindles used in CNC machine tools is 10%. In 2005, the number of electric spindles for CNC machine tools was about 6,000, which has become the main force in the electric spindle market.
The reason why domestic electric spindles rely heavily on imports is that the quality of domestic electric spindles is not guaranteed, except for the fact that the output has not kept up. At present, China has developed electric spindles that can be applied to CNC machine tools and machining centers, and has been equipped with some domestic CNC machine tools. However, in general, compared with foreign products, domestically produced electric spindles have large gaps in performance, variety and quality. Therefore, the current domestic high-speed, high-precision CNC machine tools and machining centers are still mainly used. Imported from abroad.
There are many industry experts who have expressed their opinions on whether there is a technical bottleneck in the production of electric spindles. Some experts have analyzed the electric spindle technology and thought that the technical difficulty of the electric spindle is not great. Electric spindles do require integrated technology, but as long as one company has one of these technologies, it can produce electric spindles. Because products corresponding to other technologies are completely outsourced. For example, a bearing factory can purchase a motor, and a motor factory can also purchase a bearing. This is a common practice of some foreign electric spindle manufacturers. The world's top electric spindle manufacturers do not have a full set of technology, they also outsource products or technology.
According to Minister Qiu Xianguo of the Spindle Development Department of Luoyang Axis Technology Co., Ltd., the electric spindle seems to be simple, but it is not easy. Getting started is easy and it's not easy to get started. The electric spindle is actually a combination of many disciplines and many high-tech applications, involving mechanical, electronic, automatic control and so on. If it is only precision machining and assembly, others rely on outsourcing and relying on low-cost labor to obtain profits, which may be realized in the initial stage. However, in terms of the core competitiveness of the electric spindle, it is inevitable that it can compete with foreign companies. It is simple to take advantage of the core technology and key technologies, and it will be subject to people. The electric spindle industry cannot develop healthily and can only be followed by others. . It is precisely because of the gap between high-speed bearing technology, precision machining technology, motor technology, drive control technology and foreign advanced level that it has affected the market competitiveness of domestic electric spindles. Qiu Xianguo pointed out that the practice of Luoyang Axis Technology Co., Ltd. shows that every breakthrough in technology will bring new improvements to the level of domestic electric spindles.
How to improve the localization level of electric spindle
Experts pointed out that to speed up the pace of localization of electric spindles, we must pay attention to the following aspects: --- Strengthen the research on key technologies of electric spindles and improve the ability of independent innovation. Such as strengthening high-speed, high-rigidity bearing research, bearing lubrication cooling research, new generation of drive technology research, new material and new structure of motor technology research.
--- Accelerate the standardization of the electric spindle. In the past, there was no uniform standard for domestic electric spindles. Each manufacturer determined the size of the electric spindle itself, which made it impossible to interchange and difficult for users to select. At present, the industry standard for the first CNC machine tool electric spindle developed by Luoyang Axis Technology Co., Ltd. has entered the approval stage.
--- The government should increase support for functional components such as electric spindles. For example, increase investment in science and technology, increase support for technical reform funds, increase policy support for encouraging localization of electric spindles, and enjoy tax incentives for CNC machine tools.
---Enterprises should improve the equipment level of electric spindle production to ensure product quality and reliability.
---Strengthen publicity and communication to enhance the trust of users. Some users and OEMs do not trust the quality and reliability of domestic electric spindles, and they have chosen foreign products to make the domestic electric spindles difficult to mass-produce, which restricts the industrial development of electric spindles.
--- Encourage the support of the high-quality electric spindle produced by professional manufacturers to replace the traditional spindles produced by each machine tool manufacturer. The development of functional components and its specialized production not only help to shorten the development and manufacturing cycle of new products, but also because the functional components have occupied a considerable proportion of the cost of CNC machine tools, its industrialization also helps to enhance the price competitive advantage of CNC machine tools. The spindle unit as a key component should be serialized, engineered and manufactured, and continuously improve the performance indexes such as the spindle speed, so that the spindle unit becomes an independent intellectual property right, which can be used by users, and can be mass-produced and stably supplied. Quality parts.
High-speed spindle system has always been one of the three high-tech CNC machine tools. With the rapid development of numerical control technology and cutting tools, more and more mechanical manufacturing equipment is constantly developing to high speed, high precision, high efficiency and high intelligence. The built-in electric spindle unit, referred to as the electric spindle, has become the most suitable for the above. One of the core functional components of CNC machine tools for high performance applications. Especially in many advanced products such as multi-axis linkage, polyhedral machining, parallel machine tools, and compound machining machines, the excellent characteristics of the electric spindle are that other types of spindle units cannot be replaced.
The electric spindle is a high-tech product that integrates the machine tool spindle and the spindle motor. The electric spindle system consists of an electric spindle, a drive controller, an encoder, and a communication cable. The technical level of the electric spindle and the performance of the performance directly determine and affect the technical level and performance of the CNC machine tool, and also limit the development speed of the host.
The development of domestic electric spindles is not satisfactory
Compared with the long-term development of CNC machine tools, the development of domestic electric spindles has lagged behind, which has aroused the attention of the industry and relevant national ministries.
Some experts pointed out that the proportion of electric spindles used in CNC machine tools is 10%. In 2005, the number of electric spindles for CNC machine tools was about 6,000, which has become the main force in the electric spindle market.
The reason why domestic electric spindles rely heavily on imports is that the quality of domestic electric spindles is not guaranteed, except for the fact that the output has not kept up. At present, China has developed electric spindles that can be applied to CNC machine tools and machining centers, and has been equipped with some domestic CNC machine tools. However, in general, compared with foreign products, domestically produced electric spindles have large gaps in performance, variety and quality. Therefore, the current domestic high-speed, high-precision CNC machine tools and machining centers are still mainly used. Imported from abroad.
There are many industry experts who have expressed their opinions on whether there is a technical bottleneck in the production of electric spindles. Some experts have analyzed the electric spindle technology and thought that the technical difficulty of the electric spindle is not great. Electric spindles do require integrated technology, but as long as one company has one of these technologies, it can produce electric spindles. Because products corresponding to other technologies are completely outsourced. For example, a bearing factory can purchase a motor, and a motor factory can also purchase a bearing. This is a common practice of some foreign electric spindle manufacturers. The world's top electric spindle manufacturers do not have a full set of technology, they also outsource products or technology.
According to Minister Qiu Xianguo of the Spindle Development Department of Luoyang Axis Technology Co., Ltd., the electric spindle seems to be simple, but it is not easy. Getting started is easy and it's not easy to get started. The electric spindle is actually a combination of many disciplines and many high-tech applications, involving mechanical, electronic, automatic control and so on. If it is only precision machining and assembly, others rely on outsourcing and relying on low-cost labor to obtain profits, which may be realized in the initial stage. However, in terms of the core competitiveness of the electric spindle, it is inevitable that it can compete with foreign companies. It is simple to take advantage of the core technology and key technologies, and it will be subject to people. The electric spindle industry cannot develop healthily and can only be followed by others. . It is precisely because of the gap between high-speed bearing technology, precision machining technology, motor technology, drive control technology and foreign advanced level that it has affected the market competitiveness of domestic electric spindles. Qiu Xianguo pointed out that the practice of Luoyang Axis Technology Co., Ltd. shows that every breakthrough in technology will bring new improvements to the level of domestic electric spindles.
How to improve the localization level of electric spindle
Experts pointed out that to speed up the pace of localization of electric spindles, we must pay attention to the following aspects: --- Strengthen the research on key technologies of electric spindles and improve the ability of independent innovation. Such as strengthening high-speed, high-rigidity bearing research, bearing lubrication cooling research, new generation of drive technology research, new material and new structure of motor technology research.
--- Accelerate the standardization of the electric spindle. In the past, there was no uniform standard for domestic electric spindles. Each manufacturer determined the size of the electric spindle itself, which made it impossible to interchange and difficult for users to select. At present, the industry standard for the first CNC machine tool electric spindle developed by Luoyang Axis Technology Co., Ltd. has entered the approval stage.
--- The government should increase support for functional components such as electric spindles. For example, increase investment in science and technology, increase support for technical reform funds, increase policy support for encouraging localization of electric spindles, and enjoy tax incentives for CNC machine tools.
---Enterprises should improve the equipment level of electric spindle production to ensure product quality and reliability.
---Strengthen publicity and communication to enhance the trust of users. Some users and OEMs do not trust the quality and reliability of domestic electric spindles, and they have chosen foreign products to make the domestic electric spindles difficult to mass-produce, which restricts the industrial development of electric spindles.
--- Encourage the support of the high-quality electric spindle produced by professional manufacturers to replace the traditional spindles produced by each machine tool manufacturer. The development of functional components and its specialized production not only help to shorten the development and manufacturing cycle of new products, but also because the functional components have occupied a considerable proportion of the cost of CNC machine tools, its industrialization also helps to enhance the price competitive advantage of CNC machine tools. The spindle unit as a key component should be serialized, engineered and manufactured, and continuously improve the performance indexes such as the spindle speed, so that the spindle unit becomes an independent intellectual property right, which can be used by users, and can be mass-produced and stably supplied. Quality parts.
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