Abstract
The hypoid gear is an excellent gear and its quality is estimated from the tooth contact pattern. In general, when the load changes under operation, the relative positions of the pinion and gear also change slightly, and the tooth contact pattern moves from the central part of the tooth surface towards the toe or the heel. It is considered that this is caused by such factors as the deflection of the housing or bearing, and assembly error. However, in all such cases a good tooth contact pattern must be maintained to transmit revolution with an exact angular velocity ratio. Therefore we study the characteristics of the hypoid gear tooth contact pattern that are caused by movement to both sides of the tooth surface. In the present report, the theoretical analysis for obtaining an accurate tooth contact pattern is described.
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