【正文】 ical control technology, electronics technology, puter technology, such as the development of machine tools bination of mechanical structure and control system has also undergone a tremendous change. With the the aggregate machinetool tools of development: 1） . NC. A bination of CNC machine tools, not only a plete change from the previous relay circuit posed of a the aggregate machinetool tool control system, and the head. Also the mechanical structure and position of machine parts universal standards has or is undergoing an enormous change。 2） . Modular. NC plus one two modular greatly enrich the position of the Universal machine parts, it will cause universal machine bination of a fundamental change，According to modularization design theory, the modules of aggregate machine tool are divided in this paper on the basis of function analysis. Taking UG software as developing flat, the parametric 3D modeling module bank is set up. The database for storing the data used in design is also set up at the same time. Under the guiding of the system, users can plete such tasks as module choice, module bination, and calculation, ,puter aided modularization design of aggregate machine tool can be realize.. 3） . Highspeed. As highspeed processing can greatly reduce the surface roughness and 9 cutting force ponents, greatly reducing cutting temperature, increase productivity, the machine s highspeed research is rising, especially NC machine tool movements and the main feed velocity has reached an alarming highspeed . For example, the . production of processing center, spindle speed up to 15 00060 000r/min, table fast forward speed of up to 90120 m / min. Conform to the trend of highspeed machines, machine tools bination of speed getting higher and higher. For example, the German Volkswagen plant in the processing of aluminum cylinder head bustion chamber side, the use of PCD cutter and milling speed of up to 3 075m/min, feed rate of 3 600mm/min, the CBN has adopted the installation of the new boring knife blade processing Kevin Gray Rail, the cutting speed of 800 m / min, feed rate of I 500 mm / min. 4, precision of. As the realization of NC machine tools, thus increasing the accuracy of processing machine, so that some of the past seem difficult to achieve the accuracy of processing has been realized . Protection of the whole. Completely closed the machine is now a major characteristic, whether single or machine tool production lines, are all closed by the housings, electrical, hydraulic full use of air alignment. All closed protection, not only production line machine tools and their aesthetic appearance, but also improve the safety, reliability and ease of maintenance. Machine tools and automatic bination of technical development trend line Combination of automated machine tools and machine tool portfolio is a dedicated highperformance line of automation technology and equipment, at present, it is still a large number of mechanical products for efficient, highquality and economic production of key equipment, have been widely used in automobiles, tractors, internal bustion engines and pression machines and many other areas of industrial production. Which, in particular the automotive industry is the bination of the largest machine tool and automatic line users? Such as the German Volkswagen plant in Salzgitter engine plant, used in the early 9039。s metalcutting machine is automatic line (60%), Modular Machine Tool (20%) and processing center (20%). It is clear that mass production of machinery in the industrial sector, a large number of binations used in machine tool equipment and automatic lines. Therefore, the the aggregate machinetool and automa