Tooth contact analysis of face-gear drives

Based on the face-gear generation process, the analytical geometry of the face-gear drive and its mathematical model for tooth contact analysis of the face-gear and the spur pinion meshing were derived. The tooth contact paths and the transmission errors due to assembly error along the axis of face-gear, misalignment of crossed and angular displacements between axes of spur pinion and face-gear were analyzed. Furthermore, the conditions of undercutting and pointing in the generation process were studied. Several design charts were then developed. Finally, the conditions of undercutting and pointing for a face-gear drive were all identified in meshing with and without assembly error along the direction of the axis of face-gear and misalignment of angular displacement between axes of spur pinion and face-gear. Several numerical examples were also presented.