Design and simulation of a two-tooth-difference cycloidal pinwheel RV reducer
Xian Zhang
Dalian Jiaotong University
Junhua Bao
Dalian Jiaotong University
DOI: https://doi.org/10.59429/esta.v13i2.14566
Keywords: two-tooth difference; cycloidal pinwheel drive; 3D modeling; RecurDyn simulation
Abstract
To address the requirements of industrial robot joint drives for high precision, high load capacity, high smoothness, and compact structure, a design and simulation study of a double-difference cycloidal pinwheel RV reducer was conducted. First, basic parameters such as the number of teeth on the pinwheel and the cycloidal wheel were determined based on the principles of cycloidal pinwheel transmission. Subsequently, models of components such as the cycloidal wheel and pinwheel were created and assembled, and a dynamic model was established in RecurDyn. Simulation results indicate that after the system reaches steady state, the output speed curve remains stable, with an error of 0.21% relative to the theoretical gear ratio. Contact force analysis shows that the maximum contact force occurs between the pinion and cycloid wheel 1. SMISES equivalent stress contour plots reveal that high stresses are primarily concentrated in the meshing contact area between the cycloid wheel and the pinion. The research results indicate that the designed reducer possesses good motion transmission accuracy, meshing stability, and load-carrying capacity. It provides a strong theoretical basis and technical support for the design and application of double-difference cycloidal pinwheel RV reducers, thereby promoting their further development in the field of industrial robot joint drives.
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