The improving of cutting cantilever-fixed parts on CNC lathes

The paper presents the method of improving movement accuracy of the tool and the blank when turning cantilever-fixed parts. One of the reasons limiting accuracy improvement in cantilever-fixed parts turning is an untimely sending correction signals to the control actuator. In a real drive it is impossible to check the time of sending correction signals, since registration, processing and transmission of the signal via feedback channels takes a certain amount of time. As a result of the feedback signal falling, there is a tool correction delay in the turning process. It results in the additional error component. When using a computer model of the cutting process in the guidance loop, it is possible to create and send a feedback signal to the control channel without any delay. This lets the actuator adjust the tool movement in advance.