随着科学技术的发展,数控机床及其数控技术也在不断的发展。我国早期制造的数控机床和陆续从国外引进的数控机床,已有相当一部分机械精度下降、电气控制元件损坏、数控系统已老化被淘汰,配件很难买到。因此造成部分机床处于停机状态,或机床时好时坏,经常修理。对于这些早期数控 With the development of science and technology, CNC machine tools and its numerical control technology are also constantly developing. China’s early manufacture of CNC machine tools and CNC machines imported one after another have been a considerable part of the decline in mechanical precision, electrical control components damaged, numerical control system has been eliminated aging, accessories are difficult to buy. As a result, some machine tools are in a shutdown state, or the machine tool is in good or bad condition, often repaired. For these early NCs