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The backwardness of machine tools was the bottleneck of the development of China's manufacturing industry. After ten years of development, domestically produced machine tools in some fields are no less than similar products from abroad.
Ten years ago, in the series of "Technical Bottlenecks Talks" organized by Science and Technology Daily, Qu Xianming, then deputy director of the Technical Committee of the Mechanical Science Research Institute, said in an exclusive interview that the state’s investment in manufacturing industry is difficult to get rid of "introduction, backwardness, The re-introduction of the "circle", although the introduction of some or all of the imported technology to the domestic similar products, but almost no innovation.
At that time, experts pointed out that the research and development of CNC machine tools is a top priority, and the "flexibility, processing accuracy and efficiency of the machine tool should be greatly improved, which will cause a fundamental change in our manufacturing and processing levels." At that time, China's CNC machine tool market was also monopolized by foreign businessmen. Due to the lack of stability of our own machine tools, it is difficult to compete with foreign high-quality machine tools.
Machine tools are the starting point for all manufacturing industries. In the past ten years, is the machine tool level still the bottleneck of China's manufacturing industry? The reporter recently interviewed Qu Xianming experts again.
“In the past ten years, China’s manufacturing industry has grown rapidly. According to the previous year’s data, it is about 25% per year.†Qu Xianming pointed out that the rapid growth of manufacturing industry has boosted the demand for domestic machine tools and promoted the technological progress of domestic machine tools. . At the CNC Machine Tool Expo held in Nanjing this year, we looked at it, mostly domestically produced machine tools.
“Compared with a decade ago, China’s CNC machine tools have improved a lot.†Qu Xianming said, for example, five-axis linkage machine tools, China could not produce ten years ago, and now there are several domestic brands.
Qu Xianming believes that the remarkable progress in the level of machine tools in recent years has enabled us to achieve breakthroughs in some manufacturing sectors. As an example: the successful domestically produced 36,000-ton vertical extrusion machine enabled China to produce large-diameter thick-walled tubes, so the price of similar products in Japan was forced to be significantly reduced. Other heavy-duty machine tools have also reached the international advanced level, and the domestic five-axis machine tool is also an iconic achievement.
However, some important high-end CNC equipments are still not in production technology, which makes us constrained in some of the most important manufacturing fields such as large aircraft and integrated circuit production. Therefore, in order to achieve a full-scale development of the manufacturing industry, high-end CNC equipment is still a difficult point to overcome.
"In advanced technology, we are still in the following stage." Qu Xianming said that China's CNC machine tools still have a staged gap in terms of speed and precision. For products of the same specifications, the speed of foreign machine tools is about three times that of domestic machine tools, and the accuracy is close to an order of magnitude higher.
Qu Xianming told reporters that CNC machine tools are a very complex industry in the production chain. The technical bottleneck of domestic machine tools is difficult to boil down to a single specific link. In general, CNC machine tools consist of digital control systems and machine tools. China has a gap in these two aspects.
On the one hand, high-performance CNC systems are a key factor in determining the performance and cost of the entire machine. The domestic high-end CNC machine tools exhibited at the Nanjing Expo this year are all CNC systems of foreign companies such as Siemens or Fanaco. The domestic CNC system has a significant gap with respect to the world's advanced level in terms of high-speed, high-precision, five-axis machining and intelligent functions. This is due to the comprehensive gap between the domestic CNC system architecture (hardware platform, software platform, fieldbus), high-speed high-precision control algorithm, and servo drive. On the other hand, the functional components such as electric spindle, double oscillating head, turntable, nano-precision grating, and the core technology of design and manufacture of the whole machine are also the key constraints for the manufacture of high-end machine tools in China. The improvement of the overall technology of CNC machine tools in China is ultimately inseparable from the support of the advanced functional components industry.
The gaps mentioned above come from many reasons such as poor quality management, insufficient technical accumulation, and low R&D investment. It takes a long time to solve the problem. Despite this, Qu Xianming’s expectations are still optimistic. He believes that the huge domestic market demand is a positive factor in stimulating technological progress. It can be expected that by 2020, a large number of high-end CNC machine tools required in various fields of manufacturing will be produced domestically.
Ten years ago, in the series of "Technical Bottlenecks Talks" organized by Science and Technology Daily, Qu Xianming, then deputy director of the Technical Committee of the Mechanical Science Research Institute, said in an exclusive interview that the state’s investment in manufacturing industry is difficult to get rid of "introduction, backwardness, The re-introduction of the "circle", although the introduction of some or all of the imported technology to the domestic similar products, but almost no innovation.
At that time, experts pointed out that the research and development of CNC machine tools is a top priority, and the "flexibility, processing accuracy and efficiency of the machine tool should be greatly improved, which will cause a fundamental change in our manufacturing and processing levels." At that time, China's CNC machine tool market was also monopolized by foreign businessmen. Due to the lack of stability of our own machine tools, it is difficult to compete with foreign high-quality machine tools.
Machine tools are the starting point for all manufacturing industries. In the past ten years, is the machine tool level still the bottleneck of China's manufacturing industry? The reporter recently interviewed Qu Xianming experts again.
“In the past ten years, China’s manufacturing industry has grown rapidly. According to the previous year’s data, it is about 25% per year.†Qu Xianming pointed out that the rapid growth of manufacturing industry has boosted the demand for domestic machine tools and promoted the technological progress of domestic machine tools. . At the CNC Machine Tool Expo held in Nanjing this year, we looked at it, mostly domestically produced machine tools.
“Compared with a decade ago, China’s CNC machine tools have improved a lot.†Qu Xianming said, for example, five-axis linkage machine tools, China could not produce ten years ago, and now there are several domestic brands.
Qu Xianming believes that the remarkable progress in the level of machine tools in recent years has enabled us to achieve breakthroughs in some manufacturing sectors. As an example: the successful domestically produced 36,000-ton vertical extrusion machine enabled China to produce large-diameter thick-walled tubes, so the price of similar products in Japan was forced to be significantly reduced. Other heavy-duty machine tools have also reached the international advanced level, and the domestic five-axis machine tool is also an iconic achievement.
However, some important high-end CNC equipments are still not in production technology, which makes us constrained in some of the most important manufacturing fields such as large aircraft and integrated circuit production. Therefore, in order to achieve a full-scale development of the manufacturing industry, high-end CNC equipment is still a difficult point to overcome.
"In advanced technology, we are still in the following stage." Qu Xianming said that China's CNC machine tools still have a staged gap in terms of speed and precision. For products of the same specifications, the speed of foreign machine tools is about three times that of domestic machine tools, and the accuracy is close to an order of magnitude higher.
Qu Xianming told reporters that CNC machine tools are a very complex industry in the production chain. The technical bottleneck of domestic machine tools is difficult to boil down to a single specific link. In general, CNC machine tools consist of digital control systems and machine tools. China has a gap in these two aspects.
On the one hand, high-performance CNC systems are a key factor in determining the performance and cost of the entire machine. The domestic high-end CNC machine tools exhibited at the Nanjing Expo this year are all CNC systems of foreign companies such as Siemens or Fanaco. The domestic CNC system has a significant gap with respect to the world's advanced level in terms of high-speed, high-precision, five-axis machining and intelligent functions. This is due to the comprehensive gap between the domestic CNC system architecture (hardware platform, software platform, fieldbus), high-speed high-precision control algorithm, and servo drive. On the other hand, the functional components such as electric spindle, double oscillating head, turntable, nano-precision grating, and the core technology of design and manufacture of the whole machine are also the key constraints for the manufacture of high-end machine tools in China. The improvement of the overall technology of CNC machine tools in China is ultimately inseparable from the support of the advanced functional components industry.
The gaps mentioned above come from many reasons such as poor quality management, insufficient technical accumulation, and low R&D investment. It takes a long time to solve the problem. Despite this, Qu Xianming’s expectations are still optimistic. He believes that the huge domestic market demand is a positive factor in stimulating technological progress. It can be expected that by 2020, a large number of high-end CNC machine tools required in various fields of manufacturing will be produced domestically.
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