一、引言目前数控机床,特别是数控车床在国内已得到较为广泛的应用。实际运行的机床,开环控制占绝大多数,受到各方面的限制,很少采用反馈控制,同时在数控车床的对刀问题上,还在继续寻求简便易行、廉价的方法。如果要进一步提高加工质量,缩短辅助 I. Introduction At present, CNC machine tools, especially CNC lathes in the country have been more widely used. The actual operation of machine tools, open-loop control accounted for the vast majority, subject to various constraints, rarely use feedback control, while the CNC lathe knife problem, is still continuing to seek easy, cheap method. If you want to further improve the quality of processing, shortening the auxiliary