Abstract
We developed a new diagnostic method by using a laser beam. First, 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 variations of laser reflection between the initial and the present conditions are compared, and it can estimate the condition on the tooth surface. Next, to apply this method to a helical gear, we made the three-dimensional model which located the relation between the helical gear and the laser sensor, and derived the conditional equation that the helical gear can be irradiated by the laser sensor along the tooth trace of the helical gear. By using this equation, we can diagnose the helical gear as well as a spur gear.
Published Version
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