抄録
We developed a new diagnostic method by using a laser beam. The tooth surface is irradiated by a zonal laser beam from oblique direction, and then an irradiated laser beam line is shifted along the height of the tooth according to gear revolution. The angles between measured gear and laser beam were defined. To apply this method to a helical gear, the arm for setting the laser sensor was assumed as the special closed-loop serial-linkage, and the structure the arm was proposed. By using these proposals, we can diagnose the helical gear as well as a spur gear.
