In recent years, the German numerical control machine tool development momentum is good, the development of machine tools to high precision, high speed, high efficiency, compound and so on. German machine tools not only high-tech, but also have the characteristics of energy efficient. German advanced development of CNC machine tools, behind its own must have its own know-how. First, improve the efficiency of CNC machining of advanced technology Improve the efficiency of CNC machining to improve cutting speed, feed rate, jerk, reduce the tool change time, loading and unloading time means, such as linear feed rate of 150m / min, acceleration 1g. It uses a linear motor, torque motor, shorten the transmission chain, improve the dynamic characteristics of the system. Lightweight design, structural optimization of moving parts, composite materials such as carbon fiber to reduce the quality of moving parts. High material strength, light weight, about 30% lighter than metal, can be used as a car shell and other major components to replace the material. Adopt electric spindle to increase spindle speed. Exchange table, refueling time 2.2s, improve the efficiency of loading and unloading. Robot loading and unloading, instead of manual loading and unloading. Gaga speed, from 50m / s3 to 150m / s3, processing efficiency increased by 30%. Second tool change, tool change time is shortened to 1s or less. Second, advanced processing technology In addition to conventional milling and turning machines and double spindle machining machines, RWTH Aachen Germany explores milling and laser surface treatment compounding, milling on substrates with low hardness and good toughness, and then laser welding on the surface A layer of material with special properties; Germany EEW and HugoRost companies, wind blades in the five-axis machine tool X-ray detection equipment, milling and flaw detection achieved in a single fixture to complete. Third, improve the processing of advanced technology Cooling of the heating elements in CNC machine tools, such as primary and secondary linear drives, CNC turntables and spindles, can reduce the effect of thermal deformation on machine tool accuracy. Positioning accuracy 6μm, repeat positioning accuracy 4μm. Application of GPS Positioning Technology in Improving Assembly Precision. Fourth, modular machine technology German machine tool companies have a very small division of labor, the modular concept runs through the whole process of machine tool production: First, the machine tool modular design: the machine tool for a rational division of mechanical and electrical integration design. Second, in accordance with the results of modular design, direct procurement of components such as motors, leadscrews, guides, tool magazines, racks, columns, beams and other components are outsourced to make most machine tool enterprises not to carry out any small amount of machining. Finally, modular assembly: In order to improve machine assembly efficiency, the first component-level assembly (including electromechanical liquid gas), the module has a convenient interface, making the module has more independence, to facilitate transportation and assembly. Fifth, intelligent automatic machine technology German high-tech development strategy is reflected in the machine tool is the digital factory, production, processing automation, energy saving and adapt to different requirements. In Heidenhain small parts logistics company uses fully automated intelligent AGV car, to achieve the automatic planning, automatic obstacle avoidance, automatic door opening and closing, automatic up and down elevator and other functions, with high intelligence. German machine tool equipment trends are automated, efficient, energy saving, machine tool equipment to meet the basic processing functions, and gradually to provide users with integrated and automated solutions. For example, the company not only sells machine tools in China, but more importantly, it plans and provides overall automobile manufacturing workshops, production lines and equipment for Chinese automobile manufacturers. Its products are widely used in automation of loading and unloading machines to make machine processing more efficient and more automated Greatly improve. The reason why German CNC machine tools lead the world is that it has its own unique mode of development, its own machine tool technology and its own way of development. Now all countries are demanding that manufacturing industries adopt renewable resources. According to this development model, the future of German CNC machine tools may be Will be energy-saving equipment, machine tools change.