【導讀】生物技術及其產(chǎn)業(yè)、航空、航天等國防工業(yè)產(chǎn)業(yè)）的使能技術和最基本的裝備。什么勞動資料生產(chǎn)”。而數(shù)控技術又是當今先進制造技術和裝備最為核心的技術。當今世界各國制造業(yè)。此外，世界上各工業(yè)發(fā)達國家還將數(shù)控技術及數(shù)控裝備列為國家的戰(zhàn)。數(shù)控關鍵技術和裝備方面對我國實行封鎖和限制政策。總之，大力發(fā)展以數(shù)控技。國家地位的重要途徑。提高產(chǎn)品的質量和檔次，縮短生產(chǎn)周期和提高市場競爭能力。情況下，才能對這些筋、壁進行加工。近來采用大型整體鋁合金坯料“掏空”的方。結方式拼裝，使構件的強度、剛度和可靠性得到提高。從EMO2020展會情況來看，高速加工中心進給速。部分替代組合機床。美國CINCINNATI公司的HyperMach機床進給速度最大達。在加工精度方面，近10年來，普通級數(shù)控機床的加工精度已由10μm提高到5μm，在可靠性方面，國外數(shù)控裝置的MTBF值已達6000h以上，伺服系統(tǒng)的MTBF值達到30000h以上，表現(xiàn)出非常高的可靠性?；?，其制造難度和成本大幅度降低，數(shù)控系統(tǒng)的價格差距縮小。

　　

【正文】 ng 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。s basic team. Though has made considerable progress in research and development and industrialization of numerical control technology, but we will realize soberly, the research and development of the technology of advanced numerical control of our country, especially there is greater disparity in current situation and current demand of our country of engineering level in industrialization. Though very fast from watching the development of our country vertically, have disparity horizontally more than (pare foreign countries with) not merely engineering level, there is disparity too in development speed in some aspects, namely the engineering level disparity between some highgrade , precision and advanced numerical control equipment has the tendency to expand . Watch from world, estimate roughly as follows about the engineering level of numerical control of our country and industrialization level. （ 1） On the engineering level, in probably backward 101 years with the advanced level in foreign countries, it is bigger in highquality precision and sophisticated technology. （ 2） On the industrialization level, the occupation rate of market is low, the variety coverage rate is little, have not formed the largescale production yet。 The specialized level of production of function part and ability of forming a plete set are relatively low。 Appearance quality is relatively poor。 Dependability is not high, the mercialized degree is insufficient。 One39。s own brand effect that the domestic numerical control system has not been set up yet, users have insufficient confidence. （ 3） On the ability of sustainable development, research and development of numerical control technology, project ability is relatively weak to the petition。 It is not strong that the technological application of numerical control expands dynamics。 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 industry39。s process arduousness , plexity and longterm characteristic of domestic numerical control insufficiently。 It is difficult to underestimate to add strangling, system, etc. to the unstandard, foreign blockade of the market。 It is not enough to analyse to the technological application level and ability of numerical control of our country. （ 2） System. Pay close attention to numerical control industrialization many in the issue, consider numerical control industrializa