Abstract
A new compact design of three-stage differential cycloidal planetary gear drive based on the concept of the so-called RV-reducer is proposed for high reduction ratio. The aim of the paper is to explore the structural and the loading characteristics of this new design. The drive consists of an involute stage and The reduction ratio of this drive type can be positive or negative depending on the tooth numbers of the gears. The relation of transmitted torques onto each component are derived based on the relations of torque and power equilibrium. The loaded tooth contact analysis of the drive is also developed based on the influence coefficients method. The influence of the two mechanism types and the arrangement of the cranks on the shared loads and contact stress acting on multiple tooth-pairs as well as the transmitted torques are analyzed and discussed in the paper.
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