Superhard tools are mainly made of diamond and cubic boron nitride. Among them, synthetic diamond composite (PCD) tools and cubic boron nitride composite (PCBN) tools dominate. Many cutting concepts, such as green machining, car grinding, milling grinding, hard machining, high speed cutting, dry cutting, etc., are all due to the application of superhard tools, so superhard tools have become impossible in cutting. An important means of lack. With the advancement of science and technology, the rapid development of manufacturing industry, the rapid development of CNC machining technology and the widespread use of CNC machine tools, the production and application of super-hard tools are becoming more and more extensive. PCD and PCBN tools have been widely used in traditional fields such as machinery, metallurgy, geology, petroleum, coal, stone, construction, etc., high-tech fields such as electronic information, aerospace, defense and military, as well as emerging industries such as automobiles and home appliances. Greatly promoted the rapid development of cutting processing and advanced manufacturing technology, and the market has also expanded rapidly. According to reports, China's current PCD, PCBN\\CBN cutting tools have an annual output of 400,000, with sales of less than 20,000 yuan, and the authority of the department The survey shows that the potential market sales of the two types of tools will exceed $1.5 billion. It can be said that the superhard tool industry is promising. Despite this, for China's super-hard tools, there is still a lot of work to be done to catch up with this fast-growing development. Because super-hard tools are mostly high-end products, the manufacturing strength is high and the technical threshold is high. For the control of foreign manufacturers, China has only a small share. According to a survey conducted by a domestic consulting website based on the manufacturers and downstream users of the super-hard tool industry, in 2009, the market share of the composite super-hard tool materials market was before. Several companies are all foreign companies, namely Element Six (30%), DI Company (20%), Sumitomo (18%), Korea Rijin (9%), MegaDiamond (4.5%), TomeiDiamond (4.5 %), Dennistools (4%), several companies accounted for 90% of the market. It can be said that China's super-hard tools are still in the initial stage, and there are some problems that restrict the rapid expansion of tool companies, mainly the following points. 1. Domestic PCD and PCBN materials have poor uniformity of tool materials and unstable tool quality. 2. Domestic super-hard tool sharpening manufacturing equipment technology is backward, and it is not yet able to provide tool sharpening machine tools equivalent to foreign companies. 3. China's superhard tools have not yet formed a standardization and serialization, resulting in poor product quality consistency. 4. The basic research of superhard tool application is not deep enough, it is not enough system, and can not correctly guide the correct and reasonable application of downstream enterprises. 5. China's super-hard tools also have a series of problems such as the connection and clamping method with the machine tool, the blade clamping mechanism, the tool material and structure, the tool clamping measures in the high-speed spindle, and the dynamic balance of the rotary tool. 6. High-precision and complex structure of super-hard tool design and manufacturing technology is not relevant. For example, Chinese companies that are used to process automotive and aerospace key parts cannot be manufactured.
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