Abstract
AbstractA circle’s involute curve is widely used to design tooth profiles of non-circular gear drives in general and oval gear drives in particular. Nevertheless, the tooth shape and size, so as the kinematics of the meshing process, have not been thoroughly studied. Meanwhile, these factors affect the working ability and load capacity of the gear drive. To solve the above problems in this paper, the authors used an oval gear drive as the representative object for non-circular gear drives to survey and research the above characteristics without generality is lost. The research results show that the teeth distributed in the centrode position with a minimal radius often have tooth pointing and the weakest load capacity. In addition, for the non-circular gear with an involute tooth profile, it is necessary to distribute many teeth on the gear to avoid undercutting phenomena. Naturally, that results in small teeth and reduced load capacity of the gear drive.KeywordsOval gearRack cutterInvolute profileUndercutting
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