一 the development trend of digital technology CNC technology to traditional manufacturing industries has not only brought about revolutionary changes in the manufacturing sector has become a symbol of industrialization， and along with the continuous development of digital technology and the expansion of application fields， he trades some of the important people's livelihood (IT ， automobiles， light industry， medical， ) the development of playing an increasingly important role， because these industries have the digital equipment is the general trend of modern From the world of CNC technology and its trends in equipment development， the main research focus include the High-speed， high precision technology and new trends in equipment Efficiency， quality is the subject of advanced manufacturing High-speed， high precision technology can greatly improve efficiency， improve product quality and grade， to shorten the production cycle and improve market To this end， Japan will make a technical study tip 5 as one of modern manufacturing technology， the International Society for Production Engineering (CIRP) to determine the center of the 21st century， one of research In the car industry， annual production of 300，000 beat is 40 seconds / vehicles， and more varieties of processing equipment is a car that must be addressed one of the key issues; in the field of aviation and aerospace industry， and its processing for the thin-walled parts and thin bars， poor stiffness， material for aluminum or aluminum alloy， only a very small high-speed and cutting force， the order of these bars， wall Recently， the use of large-scale whole billet aluminum alloy， "hollowed out" approach to make the wings， fuselage and other parts to replace a large number of parts through a large number of rivets， screws and other assembly connection means， so that components of strength， stiffness and reliabilityI These are made of processing equipment， high-speed， high precision and high flexibility Improve the situation from the EMO2001 exhibition， high-speed machining center feed speed up to 80m/min， or even higher， and air speed up to about 100m/ At present， many of the world's automobile plants， including China's Shanghai General Motors， have adopted high-speed machining center part of the production line， composed of modular machine tool CINCINNATI US HyperMach company's largest machine tool feed rate of 60m/min， quick to 100m/min， acceleration up to 2g， spindle speed has reached 60 000r/ A plane machining of thin-walled parts， only 30min， and the same parts in the general high-speed milling machine to be 3h， in the ordinary milling machine to be 8h; Germany DMG's two-spindle lathe spindle speed and acceleration， respectively， of 12 *! 000r/mm and Accuracy in the processing， the past 10 years， the general level of machining accuracy of CNC machine tools has been 10μm to 5μmPrecision Machining Center from 3～5μm， up to 1～5μm， and the accuracy of ultra-precision machining has begun to enter the nano-scale ( 01μm) Reliability， the MTBF NC abroad value reached more than 6 000h， servo system MTBF value reached more than 30000h， showing a very high In order to achieve high-speed， high precision， with features such as supporting electro-spindle， linear motor has been a rapid development of applications to further
Abstract NC advanced manufacturing technology is the basis of NC in the modernization of production showed great To the modern manufacturing， numerical control machine tools suitable for those who shape very complex， sophisticated and small quantities of And general general machine tools simply can not meet this Even the copying machine and the combination of high precision machine tools can resolve them with small quantities this So NC is very suitable for aviation， aerospace， power， transport and manufacturing parts such as electronic processing Parts processing facing a major problem is the high-precision products， diversity and small quantities of This requires from all of CNC machine tools to the need Because of CNC systems using software control， with a lot of Modern CNC machine tools highlight the advantages of high-precision processing can be carried out and diversification of processing， can replace the other processing As According to the NC machine tools is the automatic processing procedures， the process does not require manual intervention， processing accuracy can be corrected by software and compensation， so parts of the processing can improve the accuracy， stability， the quality of the Particularly for multi-species， especially small quantities of Key words: CNC Technology， Huazhong century-HNC-21， cutter models， cutting the amount， manual programming
