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一.引言数字控制是本世纪五十年代初问世的一项新技术,由于具有一系列的优点,它获得了引人重视的应用与发展。其控制对象不断扩大,最普通的应用是金属切削加工,包括有:铣削;车削;镗削;钻削;磨削等。数控加工机床的出现,是机械加工自动化发展史上的一个重要里程碑。至此以前,只有适用于大批量工件加工的固定型自动化,产品结构一旦改变,整个生产系统必须改变。有了数控机床,即开始了可编程的自动化。通过数字、字
I. INTRODUCTION Digital control is a new technology that came out in the early 1950s. Due to a series of advantages, it has gained the important application and development. Its control object is expanding, the most common application is metal cutting, including: milling; turning; boring; drilling; grinding and so on. The emergence of CNC machining machine tools, machining automation is an important milestone in the history of development. Until now, there was only fixed automation that was suitable for the processing of large quantities of workpieces. Once the product structure was changed, the entire production system had to be changed. With CNC machine tools, programmable automation started. Through numbers, words