At present, the rapid development of CNC machine tools, CNC Lathe high-speed, high-precision, composite, intelligent, open, parallel drive, network, extreme, CNC Lathe green has become the development trend of CNC machine tools and direction. China as a manufacturing power, mainly rely on labor, prices, resources and other aspects of comparative advantage, and in product innovation and independent development of foreign counterparts with the gap is still great. China's CNC industry can not be satisfied with the status quo, should seize the opportunity to continue to develop, and strive to develop their own advanced technology, increase technological innovation and personnel training efforts to improve the comprehensive service capabilities, and strive to shorten the gap between developed countries. And strive to achieve the early realization of CNC machine tool products from low to high-end, CNC Lathe from the primary product processing to sophisticated manufacturing changes, from China to China to create, from manufacturing to power to change the manufacturing power.
CNC machine tool accuracy requirements are now not limited to static geometric accuracy, machine tool movement accuracy, thermal deformation and vibration monitoring and compensation more and more attention.
(1) to improve the accuracy of CNC system control: the use of high-speed interpolation technology to achieve a small program block continuous feed, the CNC control unit refinement, CNC Lathe and the use of high-resolution position detection device to improve the location detection accuracy (Japan has developed 106 pulse / turn of the built-in position detector AC servo motor, the position detection accuracy can reach 0.01μm / pulse), CNC Lathe position servo system using feedforward control and nonlinear control and other methods;
(2) the use of error compensation technology: the use of backlash compensation, CNC Lathe screw pitch error compensation and tool error compensation technology, CNC Lathe the equipment of the thermal deformation error and spatial error of comprehensive compensation. The results show that the application of the integrated error compensation technique can reduce the machining error by 60% ~ 80%.
(3) the use of grid inspection and improve the machining center of the trajectory accuracy, and through simulation to predict the machining accuracy of the machine to ensure that the positioning accuracy and repeat the positioning accuracy, long-term stability of its performance can be completed under different operating conditions Kind of processing tasks, CNC Lathe and to ensure the quality of processing parts.
The development of large-scale and well-equipped CNC machine tools is required for large-scale industrial equipment such as the development of defense, aviation and aerospace. The ultra-precision machining technology and micro-nano technology is the 21st century strategic technology, need to develop to meet the small size and micro-nano processing accuracy of the new manufacturing process and equipment, so micro-machine tools, CNC Lathe including micro-cutting (car, milling, grinding) machine , Micro-machining machine tools, micro-laser processing machine tools and micro-press, and other demand is gradually increasing.