Abstract
A NC geometric cutting simulator is widely used software that is enable to verify a tool path without real machining process by executing the machined shape check and the interference check between a tool and a workpiece. The purpose of this study is to develop a high-accuracy NC geometric cutting simulator which is able to predict the tool deflection and wear based on removal volume. This paper describes about calculation algorithm of the tool deflection, tool wear, and direction of the tool deflection based on removal volume, and refers to the result of comparison of the tool deflection and wear between NC geometric cutting simulation and machining experiment.