【正文】 y. Along with the development of high new technology with ask for the quality and performance of mechanical and electrical products rise the user of machine tool is also more and more high for the requirement of the processing precision of machine tool. To satisfy the needs of user near e to, ordinary series for more than 10 years control the processing precision of machine tool already from 177。 Change knife speed within 1 seconds voluntarily, 。 the revolution of main shaft in thirty thousands turn divide (some is as high as onehundred thousands turn / divide) more than。 strengthen munication function, rise into line , unite net ability. It is systematic that the new a algebra of open architecture is controlled, its hardware, software and the standard of bus line are opening, since having, is adequate and soft, hardware resource for use, not only make the systematic manufacturer of numerical control go on with user system integration get strong support, also is also user develop twice bring maximum convenience, Having promoted extensive application and the development of the systematic much class and much kind of numerical control, pass through liter files or cutting out form the system of numerical control of various classes , and may form the system of numerical control of the different type machine tool of numerical control through development, development production period shortens greatly . This kind of system of numerical control may escalate with CPU upgrading, need not change on structure. a algebra control systematic control performance large raisingThe system of numerical control melts on control performance to intelligence to develop. Along with artificial intelligence the infiltration in puter field with development, the system of numerical control has led into from adaptive control and the control mechanism of nerve network and vague system, not only has automatic programming, before Key control , vague control and learning control , pensate and move from adaptive control, technology parameter automatic generation and threedimensional cutting tool parameter development pensation etc. function, Manmachine interface is friendly, have fault diagnosis expert system make tend to more from diagnosis and fault monitoring function perfect. The servo systematic intelligent alternating drive and intelligent feed servo installation of main shaft can be distinguished voluntarily load and automatic optimization adjustment parameter. the generator drive of straight line system already practical melt.In a word, new a algebra control systematic technical horizontal large raising, have promoted the performance of numerical control of machine tool, make the flexible automation level of processing technique unceasing to high accuracy, high speed and high flexible direction development, raising. machine tool of numerical control develops tendencyTo satisfy market and the needs of the development of science and technology, to reach modern production technology put forward for the technology of numerical control higher requirement, the current, world technology and its equipment of numerical control develop tendency major embodiment in some following aspects: speed, efficiency, high accuracy and high reliabilityTo raise processing efficiency, first, must rise, cut, with feed speed, at the same time, still shorten handling time。 the systematic reliability unceasing raising of numerical control. In a word, even the machine tool of numerical control is technical, unceasing development has more and more perfect function and more and more convenient use, has more and more high reliability, price performance is also more and more high. Go to the 1990 years, worldwide systematic special field of numerical control manufacturer home produce per year the systematic contract covers of one hundred and thirty thousands of numerical control. the foreign systematic technical development of numerical control overall develop tendency is: a algebra control system to adopt open architectureEnter 90 decade, since, because of puter technology develop fast, promote the technology of numerical control of machine tool more rapid renovation. World go up a lot of systematic manufacturers of numerical control home develop the new a algebra of open architecture using the rich resource of personal puter of software and hardware control system. Open architecture makes the system of numerical control have better versatility, is flexible, adaptability and development, and melts to intelligence, network direction large development. In last few years a lot of countries study development one after another this kind of system, make center as American science (NCMS) lead together with air force the next a acting working station / controller architect