Abstract
Milling is one of the most important metal cutting processes. If we measure the cutting force, we can make cutting process optimum, prevent tool breakage, and improve efficiency of process. However in the case of using an end mill with small diameter, it is very difficult to identify whether cutting process is good or not. In this paper, we proposed the cutting force measurement technique by using image processing. In the technique, we captured a image of the end mill during cutting process, determined deflection of the tool and then estimated cutting force. Finally, we can estimate small cutting force with high accuracy.
