Compression Spring Co., Ltd. , http://www.nsspring.com
Most of the 20 high-precision large-scale CNC equipment have been delivered
The scientific and technological research of 20 kinds of high-precision large-scale numerical control equipments arranged by the state has been completed, and most of them have been delivered yet. For example, the gantry-type five-axis linkage hybrid machine tool jointly developed by Qiqihar No. 2 Machine Tool Plant, Tsinghua University and Harbin Electric Machinery Factory is mainly used for processing curved parts such as large turbine blades; research and production by Jinan No. 2 Machine Tool Plant and Beijing University of Aeronautics and Astronautics High-speed five-axis gantry machine tool, mainly used to process large-scale water pump blades for the "South-to-North Water Transfer Project"; the five-axis linkage blade machining center developed by Beijing Electromechanical Institute High-Tech Co., Ltd. for Dongfang Steam Turbine Works can meet the processing quality and processing of large blades of 600MW steam turbines. Efficiency requirements, the price is only one-third of the imported similar machine tools. The multi-axis turning and milling composite machining center developed by Shenyang Machine Tool is mainly used for the processing of complex shape parts such as pump body, precision connector, plug-in commutator and spiral blade assembly, diamond tooth gear drill bit, especially suitable for the new defense industry. The development of technical products. The large-scale CNC turning machining unit independently developed by Nanjing CNC Machine Tool Co., Ltd. has the characteristics of large torque, good rigidity, high precision and good dynamic characteristics of the whole machine. It is an urgently needed equipment for processing large pump parts. The five-axis floor-type CNC milling and boring machine developed by Jiangsu Duoling CNC Machine Tool Co., Ltd. is mainly used for processing large and medium-sized diesel engines and large and medium-sized complex structural parts. It is especially suitable for high-speed and high-efficiency machining of complex parts with space curved surfaces.
A major breakthrough in the research of high-end CNC machine tools
By completing the scientific and technological research of 20 kinds of high-precision large-scale numerical control equipment, China has made a major breakthrough in the research of key technologies of high-end CNC machine tools. At present, China has basically mastered the key technologies of multi-(5) coordinate linkage, and developed a milling head with AC swing angle, especially the breakthrough of five-axis linkage programming technology and application technology, which not only broke the technical blockade of foreign countries, but also The application of this technology is put into practical use. At the same time, the research on composite processing technology has also made certain progress. The key equipments such as the five-axis linkage turning and milling compound center, five-axis five-face machining center and double-spindle tool holder turning center have also been commercialized.
In addition, China has made important progress in the research and application of high-speed processing technology. Through the research on the unit technology of high-speed spindle, linear servo motor and high-speed machining tool holder, the development and processing technology of the separated spindle unit of 8000~10000r/min and the motorized spindle unit of 10000~18000r/min are completed. It has been applied to domestic machining centers and CNC machine tools. Developed HSK tool system suitable for high-speed machine tool processing, and has transformed it into a national standard, laying a technical foundation for the next step to accelerate the application. The research on the research and development and application technology of key technologies of linear motors has made substantial progress, and some key technologies such as load variation disturbance, thermal deformation compensation, magnetic isolation and protection have been mastered. Beijing Electromechanical Research Institute and Jiangsu Polyaxial CNC Machine Tool Co., Ltd. The Beijing Machine Tool Research Institute and other units have successively developed high-speed machining centers driven by linear motors and EDM machines, which have filled the gap in the application technology of linear machine tools for CNC machine tools and shortened the gap with foreign countries.
Due to the breakthrough and application of the above high-speed processing unit technology, the technical level of domestic CNC machine tools has been greatly improved. At present, the maximum spindle speed of China's vertical machining center is increased from 6000~8000r/min to 10000~15000r/min, up to 24000r/min; fast feed is increased from 16m/min to 24~40m /min, up to 60m/ Min. The maximum speed of CNC lathe spindle is increased from 3000r/min to 4500r/min, the turning center is up to 7000r/min; the rapid feed is increased from 8m/min to 15m/min, up to 40m/min, which shortens the gap with similar foreign products. , replaced the import.
Some key common technologies developed in China are also used in the development of other products, and dozens of major numerical control devices are derived. According to the survey of 21 major CNC machine tool enterprises in China by the China Machinery Industry Federation, over 3,000 sets of large-scale, precision, high-speed CNC machine tools and automatic production lines have been provided for the national key construction projects.
Mechanism innovation promotes scientific and technological research
In the scientific and technological research of CNC machine tools, the new mechanism has promoted the completion of the research. The development of new products by their independent development and the introduction of foreign advanced technology not only has a high technical starting point, but also greatly shortens the development cycle. For example, the multi-axis linkage turning and milling compound center developed by Shenyang Machine Tool Co., Ltd. is developed in a relatively short period of time through technical cooperation with foreign countries, joint design or introduction of technology.
Their combination of "production, learning, research, and use" ensures that the products developed meet the needs of users in terms of technical performance, and provide users with commercial products. In particular, in the development of major numerical control equipment, the relevant units have strengthened the research on the user's processing technology, and through the close integration with the users, strengthened the pertinence of the research and development content, and ensured that the research and development products can be put into use as soon as possible.
They also adopted an implementation mechanism combining basic common technology research and industrialization technology research, so that the basic common technology research results can be popularized and applied in industrialization research and production.
During the "10th Five-Year Plan" period, the Ministry of Science and Technology has arranged "Precision Manufacturing and Numerical Control Key Technology Application and Demonstration" and "CNC Key Technology and Equipment Industrialization Support Technology" in the National Science and Technology Research Program and the National High Technology Development Plan (863 Program). And application "etc. These projects have invested a total of 542 million yuan in research and development, and China has allocated funds of 124 million yuan. It has arranged 20 kinds of high-precision large-scale numerical control equipments with high technical difficulty, high import prices or foreign imports to China; Research on the industrial support technology of the batch mid-range CNC machine tools and CNC system production base; research on a number of basic common technologies such as numerical control system, servo drive technology, and high-speed spindle and other key functional components. At present, these batches of scientific and technological projects have achieved initial results, and some key technologies have made breakthroughs in research and development, and a number of high-precision large-scale numerical control equipments have been developed. The research and application of basic common technologies have also achieved results.