Current Status and Development of CNC Tool and Measuring Instrument Technology in China (5)

3. Ultra-fine grain solid carbide coating tool series

Ultra-fine grain solid carbide coated tools are used in the automotive industry, aerospace and energy industries. At present, the whole solid carbide coated tools used in key CNC machine tools are mostly monopolized by imported tools, and domestically produced tools are often The purchase of foreign ultra-fine grained carbide rods for processing, its own development is constrained. In recent years, some tool factories with solid carbide powder manufacturing capacity in China, such as Zhuzhou Diamond, Xiamen Golden Heron, and Shaanxi Hard, have developed ultra-fine grain carbide tool materials through technical transformation, introduction of technology and equipment. Acquired preliminary results (achieved sub-micron level. In recent years, advanced nano-coating technology has been adopted, and the quality of tool performance has been significantly improved. The work plan will implement the "ultra-fine grain solid carbide coated tool project" to achieve ultra-fine Development of complete technology for die-hard alloy materials and tool manufacturing. Domestic enterprises need to make the mass production of cemented carbides stable to ultra-fine 0.3~0.5μm, further improve the quality and narrow the gap with foreign advanced products. Basic techniques such as technology and technology are used to carry out technical research. In addition, how to have enough cobalt-rich layer on the front surface of the coating after finishing the tool is a key technology to improve the quality of the coating, which has yet to be tackled.

4. High-performance high-performance precision complex CNC tool

High-performance, high-precision, sophisticated CNC tools represented by gear hobs, pinion cutters, shavers and various types of broaches, in the manufacture of gear transmissions in the automotive, wind power nuclear, aerospace, marine, railway, construction machinery and other industries It is widely used and important.

The target parameters listed in the project are reasonable and necessary. There are two main problems in domestic precision gear cutters and broaches: material and coating. At present, the key occasions are all U-cobalt high-speed steel and powder metallurgy high-speed steel materials. Recently, many production plants have carried out technical transformation and equipment investment, using advanced coatings (such as TiAlN, TiAlCN, etc.) and high-speed steel heat treatment technology and not prepared, so that the quality performance of domestic gear cutters and broaches has been greatly improved, and has been reduced abroad. The gap partially replaces foreign products. In the past two years, 'Ha Yigong' has invested nearly 120 million yuan in the construction of new plants and advanced equipment at home and abroad. It is a complex CNC tool manufacturer that has become the first domestic broach production, gear cutter and indexable CNC tool. And work hard. Hanjiang Tool Factory has seized the opportunity of development in recent years and has become the most powerful gear hob manufacturer in China. Through cooperation with Balzers, the plant has ensured the quality of the gear cutter coating and improved the performance of the tool. The high-speed and high-efficiency machine-clamp type non-re-grinding CNC forming gear cutter is a new direction for the development of gear cutters and deserves industry consideration.

5. High-precision, fully automatic tool pre-adjustment measuring instrument series

The development of digital tool pre-adjustment measuring instrument in China started late. In 2005, at the Beijing Machine Tool Exhibition, Haliang and Tianjin Tianmen debuted the digital tool pre-adjusting measuring instrument prototype with area array CCD. Since Harbin acquired the German company Kaiying in 2005, based on the digestion and absorption of its advanced design and manufacturing technology, it has developed a series of high-precision tool pre-adjustment measuring instruments. The factory has set up a knife adjustment instrument production section, which has an annual output of 500 to 600 sets of knife adjustment instruments. Currently, it is mainly used for manual export. For high-precision, CNC-automated, network-equipped tool presetting instruments, the plant is actively planning and developing to quickly catch up with today's advanced levels abroad. In addition, domestic Tianjin Tianmen, Chengquan, etc. are all under development, but there is still a certain gap in technology level and quality, and it is still necessary to continue to work hard.

6. High performance laser measuring system

The high-performance laser measuring system is mainly used for the precision detection and evaluation of high-end numerical control equipment such as CNC machine tools and coordinate measuring machines. In recent years, the development direction of laser measurement systems is: high resolution, high precision, multi-function, miniaturization, the main manufacturers are Renishaw of the United Kingdom, API, Agilent and Photonics, and SIOS of Germany, etc. Xiao products have the largest sales volume in China. The new XL-80 light laser interferometry system, which was launched in 2007, is equipped with the XC-80 sensor to achieve miniaturization and improved performance. The measurement distance is 40m/80m, the resolution is 1nm, and the highest measurement speed is 1m/s. American API company's XD laser interferometry system has 5D/6D measurement function, which improves the efficiency and accuracy of CNC machine tool precision detection. China's domestic laser interferometry system, which is mainly developed and produced by Chengdu Tool Research Institute, has a certain gap compared with foreign advanced level. In recent years, through the support of the National Research Institute fund project, the measurement principle and measurement technology have made breakthroughs, and some achievements have been made in improving the performance of the domestic laser measurement system.

In short, through this survey, it is further confirmed that China's tool manufacturing industry has a large gap with foreign countries in terms of the technical level and performance quality of CNC tools and measuring instruments. However, after years of technological innovation investment, introduction and development, the gap has been narrowed, but the innovation capability is still insufficient. This is the result of insufficient basic attention and development of basic technology experimental research and overall lack of technical accumulation in the industry. Convinced that under the guidance of the policy of "production, learning, research and use", with the support of the state, the synergy of the industry, and the efforts of enterprises, China's tool manufacturing industry will be able to develop rapidly and rapidly narrow the gap with the advanced level of foreign countries. Adapt to the needs of the continuous and rapid development of China's machinery manufacturing industry.

Recently, the storm of global economic recession has rapidly expanded from virtual economy to real economy. The impact and impact on the overall tool industry in China suddenly appeared in mid-October 2008. This is a severe test. All tool factories have made great efforts to formulate strategies, adjust plans, and actively respond to the difficulties: at the same time actively strengthen internal strength, accelerate product upgrading, optimize transformation work, and prepare for the early recovery of the industry.

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