A Study on Feed Rate Optimization in the Ball End-milling Process Regarding of Tool Path and Workpiece Shape

볼 엔드밀을 이용한 금형가공에 있어서 이송 속도 최적화에 대한 연구

In the ball end-milling process of a 3-dimensional mold, it is important to select cutting conditions and tool path considering the geometrical shape of a workpiece to reduce machining time. In this study, experiments were performed to decide allowable feed rate not breaking stability of system for different geometrical shapes. It was found that downcut is more stable than upcutting in machining side wall and downward is preferable to upward in inclined part depending on the angle of the inclination and depth of cut.