The level of domestic high-end CNC machine tools has achieved a breakthrough
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The machine tool industry won 17 projects of the 2006 China Machinery Industry Science and Technology Award, including 2 first prizes, 4 second prizes and 11 third prizes. These award-winning projects are all independent innovation products.
First Prize: Substantial breakthroughs In recent years, China's high-end CNC machine tools have improved their independent research and development capabilities, and the technical level has achieved a staged breakthrough. From the 2006 machine tool industry declaration and the “China Machinery Industry Science and Technology Award†project, it can be seen that the machine tool enterprises have increased the intensity of research and development of high-end CNC machine tools and their supporting components, greatly improving the ability to develop high-end CNC machine tools. Developed a number of major equipment needed for national key projects such as power generation equipment, transportation, aerospace, and defense military. The projects that won the first prize have high technical level, technical difficulty, good social and economic benefits, and have a great influence on the technological progress of the industry.
The "Q1-105 CNC cranking special machine tool" project completed by Qizhong Numerical Control Equipment Co., Ltd. won the first prize. This machine tool is mainly used for the processing of the opening, outer cylindrical surface and chamfering of large-scale marine cranking and turning. The machine has a maximum turning diameter of 5,500 mm and a maximum workpiece weight of 60 tons. The machine table and the bed are separated by a structure, and the center of the table is equipped with a unloading mechanism. The table spindle system and the table static pressure guide are integral structures. The slide plate adopts a large overhanging balance device, and the fixture has a workpiece weight balance mechanism. , so that the table rotation is always in balance. They solved the technical problems of large overhang, eccentric load, impact load and large cutting force in the design and manufacture of machine tools, so that the whole machine has high vibration resistance. The CNC crank machine ended the history of long-term dependence on imports of domestic CNC crank machines. The successful development of this machine tool has provided urgently needed key equipment for key projects such as large-scale ships and military industries in the country. Its main performance indicators have reached the international advanced level of similar products.
The “Key Technology of High-Accuracy High-Precision Grinding of Camshaft and CNC8312 Grinding Machine†completed by Hunan University and Huhaijiejie Manufacturing Technology Co., Ltd. also won the first prize. The project incorporates research results from processes, tests, high-speed machining, precision machining, software development, process optimization, etc. that they have studied for many years, and integrates and systematically configures these results. For the key technology of high-speed precision CNC cam grinder, they systematically studied the high-speed grinding, strong grinding and precision grinding of non-circular contours, solved the machining problems of alloy cold-excited cast iron camshafts, and proposed the contour surface of the workpiece. The constant line speed grinding method established the dynamic model of the high-speed grinding machine and the high-precision discrete cam profile. The CNC non-circular contour high-speed grinding software was developed, which achieved a major breakthrough in the processing technology and method. The project has won 6 national patents. The CNC8312 CNC high-speed camshaft grinding machine developed by them is an innovative achievement with independent intellectual property rights, and the overall technology has reached the domestic leading level.
The second prize: the project with the second-class award for comprehensive technical improvement has a high technical level, indicating that the technical level of the domestic CNC machine tool has been comprehensively improved.
The "μ2000/800H High-precision Horizontal Machining Center Development" project completed by Beijing Machine Tool Precision Electromechanical Co., Ltd. won the second prize. The high-precision horizontal machining center has a maximum spindle speed of 12000r/min, rapid movement of 48m/min, positioning accuracy of 0.006mm, and repeatable positioning accuracy of 0.003mm, enabling five-axis linkage. They have successfully developed a new high-speed and high-torque spindle unit, which makes the machine have good dynamic and static stiffness and dynamic stability, low temperature rise, low noise, low speed and no creep, and can achieve high speed and high torque cutting. The main technical indicators of the whole machine have reached the international advanced level.
The “hard cutting technology, development of superhard tools and cutting database†completed by Harbin University of Science and Technology also won the second prize. The project mainly studies the hard cutting rules of tools, defines the application range of hard cutting technology, and finds out the law of reducing tool wear speed and improving tool life under hard dry cutting conditions. It has developed a complete set of superhard tool manufacturing technology and developed independently. Development of special-structured diamond wheels and other super-hard tooling products. The performance of the tool products they developed is at the domestic leading level, which can partially replace imported products. It is widely used in military, aviation, automobile, power station, bearing, instrument, heavy machinery, etc. It is especially suitable for CNC machine tools and automatic production lines with high automation. . They also developed the super-hard tool multimedia cutting database, which has guiding and promoting the promotion and application of PCBN, PCD and other tools. Super-hard tools are high-efficiency tools, which have the advantages of greatly improving processing efficiency, shortening processing cycle, reducing processing cost, grinding by car, and reducing environmental pollution.
Third Prize: Filling a number of blanks The projects that won the third prize are mostly filled with domestic blanks and products with advanced technology, and all have produced good economic benefits and promoted the technological advancement of the machine tool industry. effect.
In recent years, various economic indicators of China's machine tool industry have been growing rapidly. From the perspective of the 2006 machine tool industry declaration and award-winning projects, the technical level of China's high-end CNC machine tools and related products has been further improved, and the number and variety are constantly increasing. increase. It shows that machine tool enterprises have generally raised their awareness of independent innovation, paying more and more attention to the technical level of products and the research and development of new products. The market concept is constantly strengthening, paying more attention to the research and development and production of key equipment needed for national key projects, and more concerned about the development of new The economic benefits of the product.