Abstract
RV reducers are widely used in high-precision gear transmissions. Assembly errors and elastic deformation of the components have great influence on the transmission accuracy, which is an important indication on the evaluation of performance. A RV reducer dynamic transmission accuracy analysis model is established which is based on the rigid-flexible coupled multibody dynamics. For the modelling, the input gear shaft, the planetary gear, the crankshaft, the cycloid gear and the pin gear are considered as flexible bodies, while other components are identified as rigid bodies. Based upon the model, the influence of geometric errors of key load-carrying components such as the cycloid gear, the pin gear and the crankshaft on the dynamic transmission accuracy are studied. Through the sensitivity analysis, a control method on the dynamic transmission accuracy of the RV reducer is proposed, which provides a theoretical support for further optimization of the transmission performance for RV reducer.
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