数控专业毕业设计外文翻译----中国数控车床的现状和发展趋势分析

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1、Not only the Chinese numerical control lathe present situation and the trend of development analysis numerical control technology application has brought the revolutionary change for the traditional manufacturing industry, causes the manufacturing industry to become the industrialization the symbol,

2、 moreover along with numerical control technology unceasing development and application domain expansion, it to national economy and the peoples livelihood some important professions (IT, automobile, light industry, medical service and so on) development more and more vital role, because these profe

3、ssions must equip the digitization already was the modern development major tendency. The current numerical control lathe presents following trend of development. 1. high speed, high precision High speed, precise is the engine bed development eternal goal.Development progresses by leaps and bounds w

4、hich along with the science and technology, the mechanical and electrical products renewal speed speeds up, increasingly is also high to the components processing precision and the surface quality request.In order to satisfy this complex changeable market the demand, the current engine bed to the hi

5、gh-speed cutting, is doing the cutting and does the direction of cut to develop, the processing precision also in unceasingly enhances. On the other hand, the electricity main axle and the straight line electrical machinery success application, the ceramics ball bearing, the high accuracy lead great

6、ly hollow in cold and the ball bearing nut strong cold low temperature high speed ball bearing guide screw vice-and the belt ball bearing retainer straight line guide rail vice-and so on engine bed function part appearing on the market, also for the engine bed to high speed, the precise development

7、has created the condition. The numerical control lathe picks uses electricity the main axle, has cancelled links and so on leather belt, band pulley and gear, reduced the master drive rotation inertia greatly, enhanced the main axle dynamic speed of response and the work precision, when thorough set

8、tlement main axle high-speed operation transmission and so on leather belt and band pulley vibrations and noise question.Picks uses electricity the main axle structure to be possible to enable the main axle rotational speed to achieve above 10000r/min. The straight line motor-driven speed is high, a

9、dds the moderating properties to be good, has the superior response characteristic and the followed precision. Made the servo with the straight line electrical machinery to actuate, to omit the ball bearing guide screw this intermediate drive link, eliminated the transmission gap (including reverse

10、gap), the movement inertia was small, the system rigidity was good, could locate precisely under high speed, thus increased the servo precision enormously. Straight line trundle guide rail, because it has respectively to the gap for the zero and the extremely small rolling friction, wears slightly,

11、gives off heat may ignore, has the extremely good thermostability, increased the entire journey pointing accuracy and the repetition pointing accuracy. Through the straight line electrical machinery and the straight line trundle guide rail vice-application, may make the engine bed the rapid traverse

12、 speed to enhance 6080m/min from present 1020m/mim, even reaches as high as 120m/min. 2. redundant reliable numerical control engine bed reliability is a numerical control engine bed product quality crucial target.Whether does the numerical control engine bed display its high performance, the high a

13、ccuracy and the high efficiency, and obtains the good benefit, the key is decided by its reliable height. 3. function recombine function recombine goal is further enhances the engine bed the production efficiency, uses reduces to few in the non-processing non-cutting time.Through the function recomb

14、ine, may expand the engine bed the use scope, enhances the efficiency, realizes multipurpose one machine, one machine many energy, namely a numerical control lathe already may realize the turning function, also may realize the milling processing； Or in also may realize the abrasive machining by the

15、mill primarily engine bed on. 4. intellectualizations, the network, the flexibility and the integrated 21st century numerical control equipments has certain intellectualized system. In order to pursue the processing efficiency and the processing quality aspect intellectualization, like processing pr

16、ocess adaptive control, craft parameter automatic production； In order to enhance the actuation performance and the use connection aspect intellectualization, like feed-forward control, electrical machinery parameter auto-adapted operation, automatic diagnosis load automatic designation model, self

17、regulating grade； Simplification programming, simplification operation aspect intellectualization, like intellectualized automatic programming, intellectualized man-machine contact surface and so on； Also has the intelligence to diagnose, aspect and so on intelligent monitoring contents, by facilita

18、tes the system the diagnosis and the service and so on. The numerical control engine bed the tendency which develops to the flexibility automated system is: From (numerical control single plane, processing center and numerical control compound processing engine bed), line (FMC, FMS, FTL, FML) to sur

19、face (construction section workshop independent manufacture island, FA), body (CIMS, distribution network integration manufacture system) the direction develops, on the other hand develops to the attention utility and the efficient direction. The flexible automation technology is the manufacturing i

20、ndustry adapts the dynamic market demand and the product rapid renewal main method, is the various countries manufacturing industry development mainstream tendency, is the advanced manufacture domain foundation technology.Its key point is by enhances the system the reliability, changes into the prem

21、ise practical, take the easy networking and the integration as the goal, the attention enhancement unit technology development and the consummation.The CNC single plane to the high accuracy, the high velocity and the high flexible direction develops. The numerical control engine bed and the constitution flexibility manufacture system can conveniently and joints and so on CAD, CAM, CAPP and MTS, develops to the information integration direction.The network system to the opening, the integration and the intellectualized direction develops.