Abstract
In general, NC data used for machining is made by a CAM software. However, it is requires knowledge and skill to judge whether the tool path and tool postures are suitable or not. This paper is aiming at developing a system to experience cutting force in 3-axis controlled milling process. In this study, operating the end mill by a haptic device that can manipulate objects in a virtual space, the cutting condition is estimated from the removed voxel, and the force in the cutting process can be calculated. It was confirmed that the experience of cutting force had become possible by force feedback, which depends on the difference between uses of end mills such as up-cut and down-cut, grooving and side milling.