【正文】 eat Because the main axis milling machine highspeed rotation, cutting a shallow cutting, and feed very quickly, and the blade length of the workpiece contacts and contact time is very short, a decrease of blades and parts of the heat conduction. Highspeed cutting by dry milling or oil cooked up absolute (mist) lubrication system, to avoid the traditional processing tool in contact with the workpiece and a lot of shortings to ensure that the tool is not high temperature under the conditions of work, extended tool life. This is conducive to processing thinwalled parts Highspeed cutting of small cutting force, a higher degree of stability, Machinable with highquality employees pared to the pany may be very good, but other than the pany39。t meet highspeed development of modern numerical control technology39。s own numerical control technology and industry, and implement blockading and restrictive policy to our country in view of highgrade, precision and advanced key technology of numerical control and equipping. In a word, develop the advanced manufacturing technology taking numerical control technology as the core and already bee every world developed country and accelerate economic development in a more costeffective manner, important way to improve the overall national strength and national position. Numerical control technology is the technology controlled to mechanical movement and working course with digital information, integrated products of electromechanics that the numerical control equipment is the new technology represented by numerical control technology forms to the manufacture industry of the tradition and infiltration of the new developing manufacturing industry, namely the socalled digitization is equipped, its technological range covers a lot of fields: (1)Mechanical manufacturing technology。 There are content of intelligence diagnose , intelligent monitoring , diagnosis convenient to be systematic and maintaining ,etc.. Produce the existing problem for the industrialization of solving the traditional numerical control system sealing and numerical control application software. A lot of countries carry on research to the open numerical control system at present, such as NGC of . (The Next Generation WorkStation/Machine Control), OSACA of European Community (Open System Architecture for Control within Automation Systems), OSEC (Open System Environment for Controller) of Japan, ONC (Open Numerical Control System) of China, etc.. The numerical control system melts to bee the future way of the numerical control system open. The socalled open numerical control system is the development of the numerical control system can be on unified operation platform, face the lathe producer and end user, through changing, increasing or cutting out the structure target(numerical control function), form the serration, and can use users specially conveniently and the technical knowhow is integrated in the control system, realize the open numerical control system of different variety , different grade fast, form leading brand products with distinct distinction. System structure norm of the open numerical control system at present, munication norm , disposing norm , operation platform , numerical control systematic function storehouse and numerical control systematic function software development ,etc. are the core of present research. The worked numerical control equipment is a new light spot of the fair of the internationally famous lathe in the past two years. Meeting production line , manufacture system , demand for the information integration of manufacturing pany workedly greatly of numerical control equipment, realize new manufacture mode such as quick make , fictitious enterprise , basic Entrance that the whole world make too. Some domestic and international famous numerical control lathes and systematic manufacturing panies of numerical control have all introduced relevant new concepts and protons of a machine in the past two years, if in EMO2020 exhibition, Cyber Production Center that the pany exhibits of mountain rugged campstool gram in Japan (Mazak) (intellectual central production control unit, abbreviated as CPC)。 (4)Servo drive technology。 The speed and acceleration of main shaft of dual main shaft lathes of Germany DMG Company are up to 120200r/mm and 1g. In machining accuracy, the past 10 years, ordinary progression accuse of machining accuracy of lathe bring 5μm up to from 10μm already, accurate grades of machining center from 3～ 5μm, rise to 1～ , and ultraprecision machining accuracy is it enter nanometer grade to begin already (). In dependability, MTBF value of the foreign numerical control device has already reached above 6 000h, MTBF value of the servo system reaches above 30000h, demonstrate very high dependability . In order to realize highspeed, high finish machining, if the part of function related to it is electric main shaft, straight line electrical machinery get fast development, the application is expanded further . Link and process and pound to process the fast development of the lathe in 5 axes Adopt 5 axles to link the processing of the threedimensional curved surface part, can cut with the best geometry form of the cutter , not only highly polished, but also efficiency improves by a large margin . It is generally acknowledged, the efficiency of an 5 axle gear beds can equal 2 3 axle gear beds, is it wait for to use the cubic nitrogen boron the milling cutter of ultra hard material is milled and pared at a high speed while quenching the hard steel part, 5 axles link and process 3 constant axles to link and process and give play to higher benefit. Because such reasons as plicated that 5 axles link the numerical control system , host puter structure that but go over, it is several times high