【正文】 c 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)。s needs more and more already. For this reason, studying and making a kind of new CNC system standard ISO14649 (STEPNC) in the world, its purpose is to offer a kind of neutral mechanism not depending on the concrete system, can describe the unified data model in cycle of whole life of the products, thus realize the whole manufacture process, standardization of and even each industrial field product information. The appearance of STEPNC may be a revolution of the technological field of the numerical control, on the development and even the whole manufacturing industry of numerical control technology, will exert a farreaching influence. First of all, STEPNC puts forward a kind of brandnew manufacture idea, in the traditional manufacture idea, NC processes the procedures to all concentrate on individual puter. Under the new standard, NC procedure can be dispersed on Inter, this is exactly a direction of open , worked development of numerical control technology. Secondly, STEPNC numerical control system can also reduce and process the drawing (about 75%), process the procedure to work out the time (about 35%) and process the time (about 50%) greatly. At present, AmericanEuropean countries pay much attention to the research of STEPNC, Europe initiates IMS plan () of STEPNC. 20 CAD/CAM/CAPP/CNC users, manufacturers and academic organizations from Europe and Japan participated in this plan. STEP Tools Company of . is a developer of the data interchange software of manufacturing industry in the global range, he has already developed the super model (Super Model ) which accuses of information exchange of machine tooling by counting, its goal is to describe all processing courses with the unified norm. Such new data interchange form has already been verified in allocating the SIEMENS, FIDIA and European OSACANC numerical control at present. 2 pairs of basic estimations of technology and industry development of numerical control of our country The technology of numerical control of our country started in 1958, the development course in the past 50 years can roughly be divided into 3 stages: The first stage is from 1958 to 1979, namely closed developing stage. In this stages, because technology of foreign countries blockade and basic restriction of terms of our country, the development of numerical control technology is paratively slow. During Sixth FiveYear Plan Period , the Seventh FiveYear Plan Period of the country in second stage and earlier stage in the Eighth FiveYear Plan Period , namely introduce technology, digest and assimilate, the stage of establishing the system of production domesticization arisesing tentatively. At this stage , because of reform and openingup and national attention , and study the improvement of the development environment and international environment, research , development and all making considerable progress in production domesticization of the products of the technology of numerical control of our country. The third stage is and during the Ninth FiveYear Plan Period on the later stage in the Eighth FiveYear Plan Period of the country, namely implement the research of industrialization, enter market petition stage. At this stage, made substantive progress in industrialization of the domestic numerical control equipment of our country. In latter stage for the Ninth FiveYear Plan , the domestic occupation rate of market of the domestic numerical control lathe is up to 50%, it is up to 10% too to mix the domestic numerical control system (popular). Make a general survey of the development course in the past 50 years of technology of numerical control of our country, especially through tackling key problems of 4 FiveYear Plans, all in all has made following achievements. （ 1） Have established the foundation of the technical development of numerical control, has mastered modern numerical control technology basically. Our country has already, the numerical control host puter, basic technology of special plane and fittings grasped and driven from the numerical control system and survey basically now, among them most technology have already possessed and mercialized the foundation developed, some technology has already, industrialization mercialized. （ 2） Have formed the industrial base of numerical control tentatively. In tackling key problems the foundation that the achievement and some technology mercialize, set up the systematic factories of numerical control with production capacity in batches such as numerical control in Central China, numerical control of the spaceflight etc.. Electrical machinery plant of Lanzhou, such factory and the first machine tool plant of Beijing , the first machine tool plant of Jinan ,etc. several numerical control host puter factories of a batch of servo systems and servo electrical machineries as the numerical control in Central China, etc.. These factories have formed the numerical control industrial base of our country basically. （ 3） Have set up a numerical control research, development, managerial talent39。 Dependability is not high, the mercialized degree is insufficient。 Research, formulation that relevant standards are normal lag behind. It is analyzed that the main reason for having abovementioned disparity has the following several respect. （ 1） Realize the respect. Know to industry