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Prospects and Difficulties of Probe Measuring Instruments for CNC Machine Tools and CNC Automatic Measuring Tools

2022-11-04

The machine tool industry has always been an important strategic deployment point for major countries and leading enterprises. The changes and adjustments of the future manufacturing pattern, especially in the global automotive, aerospace, high-end equipment manufacturing and other strategic industries, the machine tool industry is an important strategic fulcrum and will play an important role in the future competitiveness fulcrum. "Made in China 2025" lists CNC machine tools and basic manufacturing equipment as "strategic battlefields for accelerating breakthroughs", and proposes to strengthen forward-looking deployment and key technological innovation, actively occupy future technological and industrial competition manufacturing venues, and improve the level of international division of labor and the right to speak.

 

1. The development of CNC machine tools in China

 

In recent years, under the background of national policy interests and the continuous pursuit of innovation by enterprises, my country's CNC machinery industry has developed rapidly. Data show that in 2019, the scale of China's CNC machinery industry reached 327 billion won. Affected by the epidemic and the constraints of energy supply, the mayor/market size of China's CNC machine tool industry in 2020 will slightly decrease, and the mayor/market size will be 247.3 billion yuan, a year-on-year decrease of 24.4%. In 2021, the mayor/market size of China's CNC machinery industry will grow again to 268.7 billion yuan. The China Business Research Institute predicts that the scale of the digital control machinery industry will reach 295.7 billion won in 2022. During the "14th Five-Year Plan", my country actively cultivated advanced manufacturing clusters and promoted the innovation and development of advanced CNC machinery industry. The industry is expected to usher in a period of rapid development.

 

Source: China Institute of Commerce and Industry.

 

CNC machine tool is the abbreviation of computer numerical control machine tool, which is an automatic machine tool equipped with a program control system. The control system can use control codes or other symbolic instructions to logically process the program, decode it, display it as a coded number, and input it into the numerical control device through the information transmitter. After working, the digital control unit sends various control signals to automatically process the parts according to the shape and size required by the drawing.

 

2. The cutting point of CNC machine tools in China

 

1. From a technical point of view, digital control machines produced in my country, especially high-end digital control machines, generally do not master the core technology, and are more in the assembly and manufacturing process. (Albert Einstein, Northern Exposure, artwork) Core components, basic high-end materials and other core technologies are controlled by humans. Insufficient self-sufficiency of high-end materials and components. High-end chips, high-quality large-scale casting and forgings, high-performance motors, high-standard bearings, and high-end manufacturing materials are mostly imported from abroad. The main disadvantages of CNC machine tools in my country are:

 

It is the main engine, and the core components, the main shaft and the conveying mechanism, are the shortcomings of our country.

 

Second, CNC equipment. The core of CNC machine tools, including hardware printed circuit boards and their software, is a domestic eye-catching short board.

 

The third part is the drive unit. The drive part of the CNC machine tool actuator includes a spindle drive device, a feed device spindle motor and a feed motor. As the core components of CNC machine tools, China still needs to import. 2. From a market perspective, the mayor/market share of CNC machine tool companies is very low. Chinese CNC machine tool enterprises lack high-level high-quality talents, low RD capacity, limited production capacity, and low mayor/market share. Their development is mainly based on the capacity expansion of low-end products, and the RD investment of high-end digital control machines is insufficient. In the ranking of international CNC machinery enterprises, my country's CNC machinery production enterprises are next in the ranking, with low popularity and insufficient attention. Among all brands of digital control machines, users' attention to digital control machines from Germany, the United States, Japan, South Korea, Taiwan Province and other brands has accounted for more than 60% of the mayor/market total.

 

The performance of CNC machine tools lags behind. The overall level of my country's industrial base is not high, and it often lacks core technologies. Coupled with the blockade of foreign machinery manufacturing technology, the performance and quality of domestic CNC machine tools are very different from those of foreign countries. First, domestic advanced CNC machine tools have poor reliability, high failure rate and unstable performance. Second, the machining accuracy of domestic advanced CNC machine tools cannot meet higher requirements. Third, the machinability of domestic advanced CNC machine tools is insufficient, and it cannot withstand complex processing. It is difficult to be recognized by most users, which affects the scope of application.

 

3. Scan China's high-end CNC machine tool policy

 

Luo Junjie, deputy director of the Equipment Industry Department of the Ministry of Industry and Information Technology, said that digitally controlled machine tools are the "machine tools" of the industry. The development of advanced digital control machines is not only an objective requirement for supply-side structural reform in the industrial and information fields, but also an urgent requirement for realizing the in-depth development strategy of military-civilian integration and ensuring national security.

 

1). In 2009, the National Science and Technology Major CNC Machine Tool Project, namely the Advanced CNC Machine Tool and Basic Manufacturing Equipment Project, was officially launched. Since the special implementation, a total of 3,956 invention patents, 2,951 new products and new technologies have been developed, and the new output value is about 70.6 billion won. Through special implementation, through a batch of core core technologies, the "bottleneck" problem of national defense core projects is solved, and the urgent demand for important high-end CNC equipment in key areas of the national economy is met. Some products have reached the international advanced level and entered the market of developed countries.

 

According to statistics, in the past 8 years, 38 of the 57 key host products identified in the early stage of the special implementation have reached the international advanced level. The average trouble-free running time of machine tools has increased from 400 to 500 hours to about 1,200 hours, and some products have reached the international advanced 2,000 hours. In the field of advanced numerical control system, it also broke the monopoly of foreign technology and realized a large number of matching of main functional components. Domestic mayor/market share increased from less than 1% to around 5%. The special standard of "five-axis linkage machinery S-type prototype" has been approved by the International Standards Committee, which has achieved a "zero" breakthrough in the field of my country's advanced CNC machinery international standards.

 

2). The "Made in China 2025" degree announced by the state also proposes that by 2025, the numerical rate of major projects in my country should be increased from the current 33% to 64%.