Method for Improving the Accuracy of Planetary Transmissions based on Spectral Analysis Experimental Evaluation and Mathematical Modeling of Kinematic Errors

Contemporary mechanical engineering requires mechanisms with high kinematic and dynamic characteristics and low manufacturing costs. Planetary gears are widely used in machines and mechanisms. One of the main problems in the production of these gears is the difficulty of manufacturing them with high precision. Planetary gears with intermediate rolling elements are the most technologically advanced compared to epicycloidal gear and can provide high kinematic accuracy and smooth operation at low cost. For these transmissions, a method has been developed to increase accuracy based on spectral analysis of the harmonic components of the kinematic error experimentally evaluated on an automated stand. The developed method makes it possible to increase the accuracy of transmission during design by reducing the errors of only the most critical parts, while reducing manufacturing costs. The method also includes computer modeling, which makes it possible to assess the effect of dynamic loads and manufacturing errors on the kinematic accuracy of transmission. The method can be used to create mechanisms for modern production based on planetary gears with intermediate rolling elements.