Real-time Prediction Of The Cutting Tools Wear

In this paper, we present a nonlinear observer to predict on-line the wear of cutting tools during machining. The observer provides the components of the flank wear and the crater wear as state variables. The cutting parameters: feed, cutting speed, depth-of-cut and rake angle are the input variables of the system; the process output is the measured machining force. The simulation results are compared to those obtained by others researchers. The states of the wear estimated by the observer are in good agreement with those given by the mathematical model of the cutting process behaviour.