Effect of tool tilt angle on cutting characteristics in micro-ball end milling

Abstract

Generally, in ball end milling, it is effective to perform cutting by give tool tilt angle in order to obtain the cutting speed at the cutting point. However, because the micro-ball end mill has low tool rigidity, it is thought that tool deflection increases when the tool tilt angle is given, and processing accuracy decreases. From this fact, in this research, the effect of cutting with tool tilt angle in micro-ball end milling on the cutting characteristics were investigated. As a result, it was clarified that the cutting accuracy decreased in the cutting given the tool tilt angle in micro-ball end milling, and the cause was examined.