Abstract
Gearing is one of the most important rolling nodes in a cycloidal planetary transmission. It consists of gears whose outlines are created according to cycloidal curves and the rollers cooperating with them. The epicycloidal and hypocycloidal gearing can be distinguished. There are power losses during the transmission operation, due to the transmitted load and friction in the gearing. The paper presents an analytical method for determining losses in cycloidal gearing, taking into account the manufacturing deviations of the elements making this gearing. The analysis allowed determining the distribution of intertooth clearances and forces at the points of contact between the profiles and the rollers, and consequently the distribution of power losses in gearing. The distribution of intertooth forces was verified by elastooptic tests of the gears set with cycloidal gearing. The results of the calculations indicate that the influence of eccentricity changes on the distribution of intertooth forces is significant and also that the distribution of power losses in gearing is closely related to the distribution of intertooth forces and has a very similar character.
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