外文翻译--论数控技术的发展趋势-数控设计(编辑修改稿)

外文翻译--论数控技术的发展趋势-数控设计(编辑修改稿)内容摘要：

ced manufacturing technology has bee the world39。 s developed countries to accelerate economic development, enhance overall national strength and an important way to statehood. CNC technology is to use digital information on the mechanical movement and the work process control technology, CNC numerical control technology and equipment is represented by new technologies on traditional manufacturing industries and the peration of the formation of new manufacturing electromechanical integrated product, socalled digital equipment , and its technology, covering many areas: (1) Mechanical manufacturing technology。 (2) information processing, processing and transmission technology。 (3) automatic control technology。 (4) servo drive technology。 (5) sensor technology。 (6) software technology. Second, the development of numerical control system at home and abroad overview With the rapid development of puter technology, the traditional manufacturing industries began a fundamental change, the industrialized countries invested heavily in modern manufacturing technology research and development and put forward a new manufacturing model. In modern manufacturing systems, numerical control technology is the key technology, which bines microelectronics, puter, information processing, automatic detection, automatic control and other hightech in one, with high precision, high efficiency, flexibility and automation features to achieve flexible manufacturing automation, integrated, intelligent play a decisive role. At present, the numerical control technology is undergoing a fundamental transformation, from specialpurpose closedopenloop control mode to the generalpurpose realtime dynamic openloop control mode. In an integrated basis, numerical control system to realize ultrathin, ultrasmall。 in based on intelligent, integrated puters, multimedia, fuzzy control, neural works, multidisciplinary technical, numerical control system to realize highspeed, highprecision, efficient control of during processing can automatically correct, regulation and pensation of various parameters to achieve an online intelligent fault diagnosis and treatment. For a long time, China39。 s numerical control system for the traditional closed architecture, CNC machine tool only as a nonintelligent motion controller. Machining process variables based on experience in advance the form of a fixed parameter setting, the actual processing of preprocessing by hand or through a CAD / CAM and automated programming systems to prepare. CAD / CAM and CNC is no feedback between the control link, the entire manufacturing process, CNC is a closeddoor openloop enforcement agency. In a plex environment and the changeable conditions, the bination of processing tool, workpiece material, spindle speed, feed rate, tool path, cutting depth, step length, machining allowance, and other processing parameters can not be in the field environment, under the external disturbances and random factors, realtime dynamic adjustment of feedback control can not be more random links to amend CAD / CAM in the set amount, thus affecting the working efficiency and product CNC machining quality. Thus, the traditional CNC system, such a fixed process control mode and closed architecture, limited to the multivariable intelligent control of CNC development, has not suited to the increasingly plex manufacturing process, therefore, to develop numerical control technology as the core of the advan。