When we are holding beautiful and thin mobile phones, when we are sitting on high-speed and convenient high-speed trains and airplanes, we rarely associate these accustomed life scenes with the machine tool industry. However, the fact is that machine tools, the "machine-manufacturing `machine`", is even more related to the "national weight tool" for the improvement of comprehensive national strength.
Although China's machine tool industry continues to grow, it is accompanied by numerous difficulties such as intensified international technology blockade and bottlenecks in independent research and development. In particular, high-end machine tools in important fields such as aerospace are still under control. The development of the industry is facing "big but not strong" "The dilemma.
The creation of Chinese own high-end machine tools has become an "proposition of the times" that urgently needs to be addressed.
At the recently held China (Beijing) International Machine Tool Exhibition (CIMT2021), the "High-speed Vertical Five-axis Machining Center VMC40U" jointly developed by University of Shanghai for Science and Technology (hereinafter referred to as Shanghai Polytechnic) and Qinchuan Machine Tool Group The eyes of the domestic and foreign industries. This school-enterprise team composed of teachers from Shanghai Polytechnic University and engineers from Qin Chuan has made domestic machine tools "transformed" in only two years, and surpassed the technical level of similar international machine tools. This "breakthrough war" has awakened the domestic market. Manufacturing potential in traditional industries.
To be the new "wind maker" in the machine tool industry
The technical gap between the existing domestic high-precision machine tools is not large. High-precision manufacturing can be achieved only by increasing the weight. However, high-speed machine tools require the structure of the machine to be light, which will lead to high-speed operation. Vibration makes it impossible to achieve high precision. Therefore, it is difficult to satisfy both high-precision and high-speed modes. Yan Jianbo, Secretary of the Party Committee and Chairman of Qinchuan Group, once said that if a machine tool is described in one sentence, it is: a mechanical product from a distance, a handicraft from a closer look, and a closer look at the foundations of mathematics, physics, chemistry, etc. The application of the subject. For example, the thermal characteristics of CNC machine tools have an important impact on machining accuracy, and the thermal characteristics here involve knowledge of physics.
"Machine tools in the aerospace field can only rely on imports. Two years ago, we wanted to buy a'rotating table' for machine tools from a German company, but we were directly rejected and told not to sell it to us." The team responsible for this research and development project is responsible Ren, Professor Li Haolin from the School of Mechanical Engineering of Shanghai Polytechnic University, said, [This also stimulated our fighting spirit to a certain extent. We must build one by ourselves and stop talking with the faces of others." It happened that Qin Chuan was at that time. The group also aims to provide "high-precision and sophisticated machine tools" for the aviation industry, not for quantity, but to make the world's top machine tools. So the Shanghai Polytechnic team and Qinchuan engineers hit it off and started the road of research and development.
In the view of Professor Li Haolin, the process of research and development is also "flow-in-place". Shanghai Polytechnic is good at design and research, while Qin Chuan is proficient in manufacturing and assembly. In the end, the "high-speed vertical five-axis machining center VMC40U" they built became the first high-end CNC machine tool in my country with a motion acceleration of 2G, achieving a positioning accuracy of 4 microns and a repeating positioning accuracy of 2 microns. In terms of accuracy and high-speed technical indicators All have reached the world-class level, and this school-enterprise cooperation R&D team will also become a new "wind maker" in the machine tool industry.
