Abstract
A newly contact detecting device which detects the collision between a dresser and a grinding wheel is developed in this study. This device uses the piezoelectric-element to detect the contact. It is obviously application of piezoelectric-elements is widely spread, and the cost of piezoelectric-elements is low priced. Therefore, it is considered that the use of piezoelectric-elements makes it facilitates to reduce the price of the detecting device. This report presents the way of development of the device using a piezoelectric-element, and experimental results of the comparison to acoustic emission sensor.