数控专业外文翻译数控技术和数控装备精品.docx

1、数控专业外文翻译数控技术和数控装备精品附录4翻译资料翻译资料(英文)NC technology and NC equipmentNC technology and NC equipment manufacturing industry is an important foundation for modernization. This is the basis of a strong direct impact on the countrys economic development and comprehensive national strength, and bearing on a c

2、ountrys strategic position. Therefore, the worlds industrialized countries have taken significant steps to develop their own technologies and their industrialization NC. In China, the CNC technology and equipment development has also been a high degree of attention in recent years has made considera

3、ble progress. Particularly in the area of general computer numerical control, PC-based platform for domestic CNC systems, has been at the forefront of the world. China, however, is in NC technology research and development industries also have many problems, particularly in the ability of technologi

4、cal innovation and commercialization process, and other aspects of market share is even more conspicuous. In the arrival of the new century, how to effectively solve these problems, Chinas NC areas along the path of sustainable development, from the overall comprehensive entered the ranks of the adv

5、anced world, we in the international competition in a pivotal position, will be NC research and development departments and manufacturers facing the important task. To accomplish this task, first of all, must be established in line with Chinas national conditions and development. Therefore, this art

6、icle from the overall strategic and technical level and two line CNC system, functional components, NC complete machine, and several specific aspects of the development in the new century means. 1 Development with Chinese characteristics and a new generation of PC NC system NC system is the core of

7、all types of CNC equipment, first through the development of scientific and technological innovation with Chinese characteristics, the new NC system, will be to promote the industrialization process of NC effective technical means. Practice has proven that the past 10 years we are moving in the PC N

8、C road is completely correct. PC machines (including industrial PC) output is big, cheap, technological progress, and quickly improve performance, and high reliability (MTBF host PC industry has reached 30 3). Therefore, as a CNC system with the hardware and software platform can greatly improve the

9、 cost-NC system, but also make full use of existing generic computer hardware and software resources and sharing the latest achievements in the field of computers, such as large memory capacity, high - color display, multimedia information exchange, networking and communications. In addition, as the

10、 common computer platform can also access NC rapid technological progress, when PC-upgrading, NC system can also be corresponding upgrades to maintain long-term technical advantages in the competition to be invincible. At present, the PC architecture CNC system comes in two main forms: (1) for the f

11、ront of the PC and NC composite structure; (2) General and PC-card-hierarchical structure. Another is the development of a number of distributed architecture. DSP will be its programmer is composed of digital servo through the media, such as fiber optic cable network to link up with the NC device, t

12、he NC formed a complete system. Although the performance of this system is very good, but because of the high costs of development and production, the recent difficult to be accepted by domestic users. We believe that the above-mentioned structure is not in line with Chinas national conditions the b

13、est solution to Chinas national conditions should be all full-function CNC Softwares integrated structure, such as the structure of the smallest hardware, and is conducive to lower system costs, but, more importantly, can effectively improve the reliability of the system. Decades of experience show

14、that the reliability of domestic CNC system is good or bad can the key to development. Although the NC system reliability impact of a number of factors, but the large-scale hardware and the hardware manufacturers lower level of reliability tend to pose the greatest threat. Previously, domestic CNC s

15、ystem in the design, the limit for a variety of reasons, do not have to use too much technical indicators ordinary CPU, so, for the completion of the complex function NC often need more CPU to component systems, and sometimes plus some special need or common hardware circuit NC system to achieve rea

16、l-time high of some functions (such as small interpolation, position servo control, etc.), resulting in large-scale system hardware. NC system for small quantities of such products in the country under the conditions of the existing process, it is difficult from the perspective of hardware manufactu

17、rers ensure that the reliability of the system As a result, domestic production in the NC system at the poor performance of the domestic few control system the image and reputation of a serious impact makes many users now also fear. Therefore, we in the development of the new NC system, priority sho

18、uld be given to selection of new high-performance CPU (such as the high-speed Pentium II, Pentium III, etc.) as a system and control core computing, and software to achieve as far as possible all the features of NC . This can drastically reduce the size of the system hardware. Also, the software des

19、ign, power supply design, the design and selection of connectors, grounding and shielding design and construction, such as the adoption of strong anti-nuisance high reliability design and manufacturing technology, and thereby improve the reliability of the system. Since a new high-performance CPU ca

20、n replace dozens of ordinary CPU (such as the 80286,80386, etc.), therefore, based on the high-performance CPU on the PC platform, not only can fulfill the basic functions of CNC system (such as information processing, knives meeting, interpolation, acceleration and deceleration control, etc.) and o

21、n-off control function (PLC contents), but also to be completed servo control functions. Thus, before the completion of the DSP digital servo control functions (such as position control, speed control, transformation vector control, etc.) from a PC can be completed in the CPU, thus realizing the con

22、tents of servo controls, which not only effectively reduce the size of the hardware part of NC , but also significantly reduce the servo control of the hardware scale. Such contents PLC and servo control of the entire contents of the integrated software CNC system, the hardware will reach its minimu

23、m, the entire CNC system, in addition to a PC platform, the only remaining driver of the sports machine interface and feedback power interface. This not only effectively improve the reliability of the system, eliminating the transmission of information bottlenecks, improve system performance, but ca

24、n also significantly reduce system cost, the system (including motor) to the existing price will be about half the CNC system. Obviously, this high performance, high reliability, low cost, the new NC system is highly competitive, is expected to open up a new situation in China to contribute to NC. I

25、n addition, the integration of PC NC system there is a big advantage, that is easy to achieve open architecture. This is because such a system is the hardware itself has been completely open, open a CNC system completely in software, as long as the proper formulation of standards and protocols, info

26、rmation processing, path interpolation, acceleration and deceleration control, Switch control to servo control can be achieved and opening up, thus greatly facilitate user access. 2 NC components advancing specialized production NC system to resolve the problem, how to achieve CNC machine tool desig

27、n and manufacture of modular machine tool manufacturing enterprises in China is the rapid response to market demand, competition won another key. CNC machine tools to achieve the design and manufacture of modular, we must solve the NC machine tool components of specialized production. China in this

28、regard from the actual demand there is still a considerable gap. Therefore, in the next few years, we must vigorously promote the CNC machine tool components and the development of specialized production. The main points are as follows: (1) New permanent magnet electric spindle, spindle units on the

29、 international market has become the most popular CNC machine tool features. But almost all of these products for asynchronous induction type, presence following major problems: there rotor windings, high current flow, heat rotor serious direct impact on the spindle precision; small and low-speed ou

30、tput torque ripple, be difficult to meet the wide range of cutting requirements; efficiency and low power factor, not only motor size and weight requirements of the inverter and a large capacity, energy and more complex control system, the high cost. (2) Cheap, high-performance servo system is, a fe

31、ed AC servo system (motor + drive) prices are generally in the million more than the price axis servo system up to a few million, has become a lower domestic CNC machine tools the cost of a major obstacle. Therefore, should be in line with the new integrated domestic CNC system development, vigorous

32、ly develop the contents of cheap, high-performance servo system. The contents of the hardware only servo motor and power interface, and make full use of Chinas permanent resource advantages, and specialized production by the motor can cost down, and the intelligent use of IPM as a power module inter

33、faces are cheap, will be the contents of feed servo control in the price of several thousand dollars within, the contents of spindle servo control in the price of less than 20,000 yuan, it is entirely possible. (3) linear AC servo system linear AC servo system is the next century CNC machine tool indispensable components, the present China