Analysis and experimental study on vibration characteristics of the RV reducer

Abstract

RV reducers are commonly employed in precision transmissions, such as robot joints, owing to their multi-tooth contact characteristics, strong impact resistance, and low backlash. A finite element modal analysis of the RV reducer was conducted in this study to reduce the influence of RV vibration on the transmission performance and improve its transmission characteristics. The transmission characteristics are analyzed according to the transmission characteristics and principles. Combined with the theoretical basis of modal analysis, the finite element analysis method was used to analyze the main transmission components, and the natural frequencies and vibration modes of each main component were obtained. A modal analysis of the input shaft and cycloidal gear was performed, and the natural frequencies and vibration modes were obtained. The vibration patterns of the RV reducer, as well as the input shaft and cycloidal gear, were analyzed comprehensively. The distribution of each order frequency and deformation of the components can be determined by analyzing the frequency and array distribution of the components. An RV reducer transmission performance test platform was established to verify the accuracy of the simulation. Vibration signals under three different working conditions were collected, and the accuracy of the simulation was verified by analyzing the frequency signal, which provided important guidance for the design and optimization of the subsequent RV reducer.