數(shù)控技術(shù)發(fā)展趨勢外文-展示頁
2024-08-23 09:57本頁面
【正文】 sion and upgrading, can be posed of different grades, different types, different degree of integration CNC system. Closedloop control mode is the traditional CNC system only for single closedopenloop control mode proposed. The manufacturing process is a multivariable control and the role of integrated processing plex process, including processing, such as size, shape, vibration, noise, temperature and thermal deformation, and other factors, therefore, to achieve the process of multiobjective optimization, Multivariable must adopt the closedloop control, realtime processing in the dynamic adjustment process variables. Processing the adoption of open universal realtime closedloop control mode the whole dynamic, easy realtime intelligent puter technology, network technology, multimedia technology, CAD / CAM, servo control, adaptive control, dynamic data management and dynamic tool pensation, dynamic simulation and other high technology into one, a tight closedloop manufacturing process control system to achieve integrated, intelligent, networkbased. 3 PCNC new generation of intelligent CNC system Research and Development adapted to the current plexity of the manufacturing process, with the structure of the closedloop control system, a new generation of intelligent PCNC CNC system has bee possible. PCNC NC intelligent system will be a new generation of intelligent puter technology, network technology, CAD / CAM, servo control, adaptive control, dynamic data management and dynamic tool pensation, dynamic simulation and other high technology into one, a tight closure of the manufacturing process Central control system.。s CNC system for traditional closed architecture, but only as a nonintelligent CNC machine controller. Process variables based on experience in the form of prefixed parameters, processing procedures before the actual processing by hand or through CAD / CAM and automatic programming system prepared. CAD / CAM and CNC have no feedback control link, the entire manufacturing process CNC is a closed ringopening implementing agencies. In a plex and changing environment under the conditions of processing tool in the process of position, workpiece material, spindle speed, feed rate, tool path, cutting depth, step, allowance and other processing parameters, not at the scene circumstances under external interference and realtime dynamic random factors, not by random amendment feedback control link CAD / CAM settings volume, in turn, affect the work of CNC machining efficiency and product quality. Clearly, the traditional fixed CNC system that controlled mode and closed architecture, limiting the CNC to the development of more intelligent control variables, can no longer meet the increasingly plex manufacturing process, therefore, the CNC technology in the potential for change inevitable. 2 NC technology development trends Performance development direction (1) highspeed highprecision efficient speed, accuracy and efficiency of machinery manufacturing technology is the key performance indicators. As a result of the highspeed CPU chips, RISC chip, as well as multiCPU control system with highresolution detector of the absolute
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