Nowadays, a monitoring technology has been attracted attention in the factory automation fields regarding IoT (Internet of Things). However, it is difficult to monitor the process information from a round tool during rotating operation in machine tools. We therefore develop a novel tool holder equipped with a wireless communication function to monitor tool vibration. In the present report, we attempt to measure the vibration of the tool holder during ball-end-milling processes and the servo driving information for different machine tools. As a result, we demonstrate that the developed tool holder with a wireless system makes it feasible to improve the machined free form surface by considering the servo driving information.
