DESIGN AND STRUCTURAL ANALYSIS OF A PLANETARY DRIVE SPEED REDUCER USING ANSYS WORKBENCH

Abstract

A planetary drive or planetary speed reducer is a mechanism for reducing the speed of an input shaft by a certain ratio. Planetary speed reducers are capable of high ratios in compact sizes. The input shaft drives an eccentric bearing that in turn drives the planetary disc in an eccentric, planetary motion. The perimeter of this disc is geared to a stationary ring gear and has a series of output shaft placed through the face of the disc. These output shafts directly drive the output shaft as the planetary disc rotates. The radial motion of the disc is not translated to the output shaft. Rotational force analysis is to carry out based on the calculated rpms at gears and pulleys. Gravity analysis is carried out for checking the acceleration inside the components. This project is about gear calculation and dimensioning, of the elements in a planetary stage of a speed reducer. The idea is to use the results from this project and go into production of such reducer to cover another segment of the market. The companies are interested in supplying transmissions for robust systems and for various industrial purposes, where large ratios of speed reduction are needed. For the determination of forces on the elements, models and drawings are to be made in CAD software like CATIA V5 and analysis by Ansys software. The quality mesh is prepared in converged solution and the solver set as analysis package with high optimizing results. The resultant calculation process can be used for designing the geometry and determination of the properties regarding the planetary reducer.