"Now, many people are asking about the impact of the financial turmoil, how should companies spend? I personally think that enterprises must start with technology, so this is the long-term solution." February 27th China Machine Tool Industry Association reputation Chairman of the Board of Directors, Liang Xunqi, said in a speech at China Industrial News.
Liang Xunzhen believes that the technological evolution of the world's mechanical processing belongs to at least four aspects of the "quality change" nature, while most other technological advances are "quantitative changes." The so-called "quality change" refers to: the fundamental difference between the innovative thinking and the traditional "quantitative change"; the essential difference between the material carrier and the conventional principle; the benefit and influence degree formed in human production activities depth
He said, "It is necessary to contact the development of the world in the field of mechanical processing in China, because technology and science have no national boundaries and are mutually reinforcing. In the past 30 years, the world's manufacturing technology and equipment fields have undergone four major changes. China has been actively participating and making important contributions and contributions, and some have even entered the forefront of the world. These four qualitative changes are fundamentally derived from the change of manufacturing tools - machine tools.
Intelligent production tools appear
Recently, at a high-level "strategic industry selection" symposium of relevant state departments, Liang Xunzhen put forward a point of view, "The intelligent nature of machine tools as production tools is an epoch-making development of human production tools. Human beings are welcoming an era of intelligent production tools. arrival".
Liang Xunyi explained that this point of view, the emergence of CNC machine tools marks the beginning of the development of intelligent machine tools. Back to the development history of machine tools, from the first CNC machine tools in 1952 to more than 50 years, including 30 years of maturity and 20 years of large-scale application, especially in recent years, the emergence of machine tool intelligent functions The further addition marks the qualitative change of machine tool technology on the road of development.
In recent years, Japan's Yamazaki Mazak Company has successively developed intelligent spindle vibration control, intelligent thermal barrier, intelligent anti-collision barrier, and language prompts; Japan's Otsuka has developed the "thinc intelligent digital control system". It shows that with the development of technology, the intelligent function of the production tool of the machine tool will become more and more advanced and more and more. The development of human intelligent production tools is in the ascendant and bright prospects.
Breakthrough in processing methods
Rapid prototyping technology is a processing method that has emerged in the past 20 years. It is a major breakthrough in the reverse thinking of processing methods and a great change in the processing principle.
Unlike the traditional "removal of materials" method that has been used to this day, rapid prototyping technology is actually the opposite of "material stacking" or "material accumulation" method, "additive manufacturing method" To achieve a method of manufacturing a prototype of a workpiece.
Rapid prototyping technology uses composite paper, high-polymer materials, metal powders, high-temperature alloys, composite ceramics, foundry sands, etc. as processing raw materials; using electrothermal, laser beam, electron beam as energy source, layered solid manufacturing (LOM); melting Deposition molding (FDM), ultraviolet laser curing (SLA), laser zone sintering (SLS) and other methods to achieve prototype part modeling, used to quickly assess the correctness and feasibility of part design, greatly shortening the development cycle of the whole machine. In addition to the application of prototypes for the manufacture of mechanical parts, sand cores, and even into the field of three-dimensional art shaping and human medical biomimetic parts (such as bone and joint) manufacturing. This is the latest product of the integrated development of computer science, new materials science, and new energy science.
In this field, China's state-owned and private scientific research units and enterprises such as Huazhong University of Science and Technology, Tsinghua University, Xi'an Jiaotong University, Tongji University, Chinese Academy of Sciences and Shanghai Liantai, Beijing Ruikeda, Wuhan Binhu Electromechanical Technology Industry Co., Ltd. . The products developed have entered the ranks of the world's advanced level, and the products put into the market are more diverse, with an annual output of several hundred units, and the technology has been exported to Singapore.
Machine tool structure change
In the past 20 years, the emergence of a "parallel structure" machine tool has revolutionized the world's machine tool design. The "parallel structure" is completely different from all traditional machine tool structures. The traditional machine tool structure can be reduced to a series structure, and all structural geometric accuracy errors, force transmission and loss of stiffness will form a series of fatal links.
The parallel structure machine tool realizes the machining action by moving the spindle head simultaneously by moving the multi-rod structure in space. Compared with the series structure, the parallel structure has a series of main advantages such as more simplification, higher rigidity and better dynamic performance.
In the past 20 years, more than 20 teams from more than 10 countries around the world have been engaged in research and development in this area. Among them, Sweden TRICEPT has supplied more than 400 products, which are widely used in Airbus, Boeing and General Motors, and Caterpillar. Construction machinery companies, in addition to a number of teams have exhibited exhibits.
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