"Now, many people are asking how companies can survive the impact of the financial turmoil? I personally think that companies must start with technology in order to develop. This is the long-term solution." February 27, China Machine Tool Industry Association reputation Chairman Liang Xunxuan said in a speech at China Industry News. Liang Xunxuan believes that the technological evolution of the world's mechanical processing is at least four aspects of the nature of "qualitative change", while other technological advances are mostly "quantitative changes." The so-called "qualitative change" refers to: the fundamental difference between innovative thinking and traditional "quantitative change"; the essential difference in principle between the material carrier and the conventional one; the degree of benefit and influence formed in human production activities depth.

He said, "To be concerned about the technological progress in the field of machining in our country, it is necessary to connect with the development of the world, because technology and science have no borders, and they promote each other. In the past 30 years, the four major qualitative changes in the field of manufacturing technology and equipment in the world, Our country has been actively participating and has made important promotion and contributions, and some aspects have even entered the forefront of the world. These four major qualitative changes are fundamentally derived from the changes in manufacturing tools-machine tools."

The emergence of intelligent production tools

Recently, at a high-level "strategic industry selection" symposium by relevant state departments, Liang Xunxuan put forward a point of view, "The intelligent characteristics of machine tools as production tools are the epoch-making development of human production tools. Human beings are welcoming an era of intelligent production tools. arrival".

Liang Xunxuan explained to this view that the emergence of CNC machine tools marked the beginning of the budding of intelligent machine tools. Looking back on the development history of machine tools, it has been more than 50 years since the first CNC machine tool appeared in 1952, including 30 years of maturity and 20 years of large-scale application. Especially in recent years, intelligent functions of machine tools have appeared one after another. The further increase of machine tool technology marks a qualitative change in the development of machine tool technology.

In recent years, Japan’s Yamazaki Mazak has successively developed smart spindle vibration control, smart thermal barriers, smart anti-collision barriers, and language prompts; Japan’s Okuma Corporation has developed the “thinc smart digital control system” and so on. It shows that with the development of technology, the intelligent function of machine tools, such as production tools, will become more and more advanced and more and more. The development of human intelligent production tools is in the ascendant, and the prospects are bright.

Changes in machine tool structure

In the past 20 years, the emergence of a "parallel structure" machine tool has revolutionized the world's machine tool design. "Parallel structure" is completely different from all traditional machine tool structures. The traditional machine tool structure can be attributed to the series structure, and all its structural geometric accuracy errors, force transmission and stiffness loss will form a series accumulation and become a fatal weak link.

Parallel machine tools use multi-rod structures to move the spindle head simultaneously in space to realize processing. Compared with the serial structure, the parallel structure has a series of main advantages such as simplified, higher rigidity, and better dynamic performance.

Over the past 20 years, more than 20 teams in about a dozen countries have been engaged in research and development in this area. Among them, the Swedish TRICEPT company has supplied more than 400 products, which are widely used in Airbus, Boeing, General Motors and Caterpillar. Construction machinery companies and several teams have exhibited trial products.

Although reports on parallel machine tools have decreased in recent years, the development of parallel machine tools has not stopped. According to Liang Xunxuan, he contacted certain teams engaged in the research and development of parallel machine tools such as Toyota Koki, Okuma, and Index in Germany and learned that these foreign R&D institutions and companies with certain technical strength are still accelerating the research and development of parallel machine tools. Improve its performance.

Liang Xunxuan said that in China’s machine tool industry, there are five or six industry-university-research combinations that are doing research and development in this area. Among them, the parallel structure (six-bar structure) developed by Harbin Measuring Tool Group and Harbin Institute of Technology has been mass-produced and 5 units have been successfully applied. In the blade processing production line of Harbin Steam Turbine Factory; the gantry type "hybrid" structure (ie series and parallel hybrid) machine tools jointly developed by Qiqihar Second Machine Tool Group and Tsinghua University is an independently conceived product in China and has been successfully used in Harbin Electric Motor Factory In the manufacturing of equipment for large hydropower stations.