Load-carrying analysis for turning arm bearings of cycloidal gear reducers with manufacturing errors
摘要
The performance and wear condition of the turning arm bearing of the two-stage cycloidal reducer are closely associated with the rotary accuracy and lifespan of the reducer. In this study, the actual turning arm bearing of the 150BX-type cycloidal reducer is regarded as the research object. Firstly, a model of the turning arm bearing is developed, and the maximum load along with its direction is determined. Then, a motion model including manufacturing errors for the cycloidal gear and crankshaft is established. Next, the impact of manufacturing errors on the movement of the turning arm bearing is analyzed and the location of maximum interference of the turning arm bearing is identified. An error selection method for key components of the cycloidal reducer is introduced, which decreases the maximum contact stress by 21.67% according to simulation results. In the end, a test is performed to verify the method of selective assembly presented in this paper. The wear condition of the inner wall surface of the cycloidal gear bearing hole in the cycloidal gear reducer has greatly improved over the same operation time. The theoretical calculation model and selective assembly enhance the durability of the cycloidal gear reducer and offer valuable guidance for selecting components in the practical manufacturing process.