Adaptive Control Constraint and Automatic Cut Distribution System for Turning Operations

In this paper a control system will be presented which regulates cutting power according to a predetermined value, and which permits automatic distribution of the cutting volume in individual cuts, using a special cutting distribution plan. The NC program only contains technological data and the description of the finished part contour, so that the shape and size of the rough part need not be known. These can therefore vary as they occur, without unnecessary idle travel. The control system required, which was first presented to the public at IHA 73 in Hanover, consists of an analogue part for power control and a digital part for the automatic cut distribution. The functions of the digital part are handled to a large extent by the mini-computer, which is already available in the CNC system. The savings potential with respect to programming and cutting will be demonstrated in a practical example. The technological basis, the derivation and optimization of the control system, the theoretical considerations which led to this cut distribution system, together with the precise method of operation and applications of the system combined with machine programming systems will not be treated here, but will be described in detail in a progress report1.