Abstract
In conventional studies, cutting force optimization methods from NC simulation result have been proposed, and have been widely used. These methods are based on an assumption that machine tool is driven exactly as NC data command. However, the actual motion of recent highly-efficient machine does not often match with trajectory command by NC data. In such a case, it is difficult to predict the exact cutting force, and will lead to the sudden tool breakage or to excessively low feed rate to prevent the foregoing events. This paper deals with the development of off-line system of predicting the cutting force by using the actual cutting motion information for each machine axis from the CNC controller. The effectiveness of the proposed method has been confirmed by examining the experimental result of the prediction of surge cutting force especially in the corner area of workpieces.
