In terms of measuring instruments, the gap with foreign countries is even greater. In this survey, it is obvious that there are big gaps in the following three technical areas:
(1) CNC machine tool measurement technology and instrumentation, especially the high-precision dynamic and static CNC machine tool precision and performance testing technology represented by laser measurement system and precision compensation technology.
(2) CNC tool measurement technology and instrumentation, especially high-precision CNC numerical control tool measurement technology, CNC tool on-machine measurement technology, and CNC tool pre-adjustment measurement technology and instrument.
(3) On-machine/online digital measurement technology and instruments suitable for production sites, especially on-machine measurement and feedback correction compensation techniques and devices for complex precision contour machining, such as CNC forming gear grinding machine measurement and measurement technology and equipment, steam turbine On-line measurement technology and equipment for blade on-site.
In order to shorten and catch up with the advanced level of foreign countries as soon as possible, under the guidance and support of national policies, key technologies that involve the development of technology in the tool industry will be selected to carry out research projects, which will enhance the competitiveness of China's tool industry and its ability to sustain development. It is of great significance to adapt to the development needs of the national equipment manufacturing industry. With the support of the state and the efforts of the industry enterprises themselves, it is entirely possible for China's tool industry to greatly accelerate the process of narrowing the gap with the advanced level of foreign countries.
Third, the equipment manufacturing industry needs analysis of the tool industry
1. New tool system for high-speed CNC machine tools--HSK and other two-sided clamping positioning tool system for high-speed and high-precision cutting
The two-sided clamping positioning new tool system represented by HSK is developed to meet the development of high-speed and high-precision precision CNC machining technology and meet the advanced processing performance requirements of high-end CNC cutting machine tools. The new tool system is characterized in that when the connection with the machine tool spindle is tightened, the taper surface and the end surface are simultaneously contacted and positioned to realize the two-sided constrained over-position, which enhances the dynamic rigidity/connection of the CNC machine tool spindle-tool system during high-speed machining. Strength and positioning accuracy. Typical examples are the HSK tool system that has become an international standard and the Sandtoc Capto tool system.
Many domestic enterprises have carried out a small amount of trial production and production of HSK tool system. Due to the lack of in-depth research and development of key technologies, no complete set of manufacturing technology and mass production capacity have been formed. After the merger of German Kaishi Company in 2005, Haji has gradually mastered the batch manufacturing technology and process of HSK tool system series from product design to dynamic balance and precision inspection. Now it has an annual output of more than 50,000. The ability of the set (all exported) has achieved remarkable results. Of course, there are still deficiencies in mass production technology, process routes, product quality testing and control, and it is still necessary to continue to absorb and innovate in order to further narrow the gap with foreign countries. Shanghai Tool Factory and Sichuan Yingge have also been able to produce HSK taper shank CNC tools in small quantities, providing users such as Shanghai General Motors. After the acquisition of Shanghai Annex 1 Plant, Shanggong has the ability to batch produce conventional tool systems. It has planned a “new tool holder system project for high-speed CNC machine toolsâ€, introducing design and manufacturing technology, talents and key equipment to achieve an annual output of HSK knife. The production capacity of 20,000 pieces of handle chucks. In fact, China has not yet established a national and industry-level HSK tool system testing system, benchmark delivery system, physical benchmarks at all levels, and product quality certification system. This work is indispensable and should be planned and implemented as soon as possible.
2. Efficient indexable tool series and superhard tool
Efficient indexable tool series and super-hard tools are very important fields in CNC tools. The application of the products is large and wide. The key technologies and research contents involved in different application fields will be different: the indexable inserts used The base material, coating requirements, blade geometry parameters, blade clamping method, overall tool structure design, etc. will all be very different, technical difficulty, and more research content. In addition, the design and manufacturing technology of 3D chipbreaker indexable inserts, including the suppression of precision blanks and edge strengthening, are all pending issues. Hard cutting, ultra-precision cutting and new material cutting, including composite materials, further drive the demand and development of superhard tools. In the development and production of high-quality super-hard tool materials, there is still a big gap in China. Even for domestic super-hard tools, the super-hard blade (PCD, CBN) materials used are mostly from GE and De.
Imported by Beers. The adoption of 3-dimensional shape super-hard blades is a new trend in the development of super-hard tools in recent years, and its manufacturing process is more difficult. In terms of high-efficiency indexable tool series, domestic enterprises such as Zhuzhou Diamond, Xiamen Golden Heron, Zigong Cemented Carbide, Shaanxi Hard, and Chengquan are all produced. Among them, Zhuzhou Diamond has the largest scale, the strongest strength and the highest overall level. A CNC indexable insert production line that is said to have reached the world-class level. The research center established in recent years, including design and development, use technology research, material performance test and cutting experimental equipment, has a good development platform. The Shanggong is in the development and production of super-hard tools, with more mature design and processing experience, advanced and sophisticated manufacturing equipment and successful service application results.
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