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随着数控技术不断发展 ,以单片机控制、数码管显示、步进电机进给为代表的数控系统 ,其简单的功能 ,较低的控制精度及可靠性 ,已无法满足用户日益增长的需求。早期用直流伺服进给的数控机床 ,由于长期使用 ,控制系统元件老化 ,故障频繁 ,又无备品备件 ,维修十分困难。这些机床
With the continuous development of numerical control technology, numerical control system represented by single chip microcomputer control, digital tube display and stepper motor feed has been unable to meet the increasing demand of users due to its simple functions, low control accuracy and reliability. Early use of DC servo feed CNC machine tools, due to long-term use, control system components aging, frequent failures, spare parts and spare parts, maintenance is very difficult. These machines