【正文】 EMO2001 in the exhibition, the new Japanese machineprocessing machine used five main axis of the first to achieve four vertical plane of any point of processing and processing, making 5 of 5axis machining processing and the same machine can be achieved, Can achieve tiltand inverted coneprocessing. German panies at DMG DMUVoution series of processing centres, a fixture in the 5processing and 5axis machining, CNC system can be controlled or CAD / CAM direct or indire。 At present, due to the emergence of spindle, making 5axis processing to achieve the main axis of the first structure greatly simplified and its manufacturing difficulties and costs significantly reduced, the NC system to narrow the price gap. Therefore promotion of the first type of spindle 5axis machine tools and posite Machines (including 5Machines) development. Using a 5axis threedimensional surface of the parts processing, the best available tool for cutting geometry, not only finish high, but also substantially improve efficiency. Is generally believed that, one 5axis machine efficiency can be equivalent to 2 sets of 3axis machine tools, in particular the use of superhard materials such as cubic boron nitride for highspeed milling cutter hardened steel parts, 5axis processing parable threeaxis Processing to play a higher efficiency. But in the past due to 5axis NC system, host of plex reasons, its price than the threeaxis CNC machine tools is several times higher, plus the programming more difficult, and restricted the 5axis machine tool development. The reliability of foreign NC devices MTBF value has reached more than 6000h, the servo system MTBF value reached more than 30000 h, showing a very high reliability. In order to achieve highspeed, highfinished, its acpanying features such as the spindle, linear motor has been the rapid development of applications to further expand. 5axis processing and rapid development of the processing machine s twospindle lathe spindle speed and acceleration respectively 12000 r / mm And 1g.In the processing precision, the past 10 years, the general level of processing precision CNC machine tools by 10 μ m to 5 μ m, Precision Machining Center from 3 ~ 5 μ m, to 1 ~ μ m, and ultraprecision machining accuracy has begun to enter the nano ( μ m). s largest machine tool feed rate of 60 m / min, quick to 100 m / min, acceleration of 2 g, spindle speed has reached 60 000r/min. A thinwalled processing aircraft parts, only 30 min, and the same highspeed milling machine parts in the general processing takes 3 h, in the general processing and milling machine to be 8 h。s automobile plants, including China39。 (6) software technology.1 NC technology development trends NC technology applications not only to the traditional manufacturing industry has brought revolutionary changes to the manufacturing sector to bee a symbol of industrialization, and with the continuous development of NC technology and the expansion of application fields, he Guojiminsheng some of the important sectors (IT , Automobiles, light industrial, medical, etc.) development plays an increasingly imp ortant role, because these industries for the digital equipment is the major trend of modern development. NC from the world39。s developed countries to accelerate economic development and enhance overall national strength and status of the important ways.NC technology is the use of digital information on the mechanical movement and process control technology, equipment NC Ntechnology as the representative of the new tec hnologies on traditional manufacturing industries and create new manufacturing the infiltration of electromechanical integration products, the socalled The digital equipment, its technology covering many areas: (1) For Manufacturing Technology (2) information processing, processing, transmission technology, (3) automatic control technology, (4) servo drive technology。s industrialized countries will also NC technology and equipment as a country of strategic materials, not only to take significant measures to develop its own technology and its industrialization NC, and the sophisticated technology and key equipment NC Aspects of the implementation of China39。s advanced manufacturing technology and equipment of the core technologies. 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