A study of structural stress analysis of reducers for supporting reliability design

Abstract

Reducer is extensively used in many devices for speed reduction of rotational motions. It must possess the properties including high rigidness, large reduction ratio and structure compactness when it is applied in robots. This paper presents an innovative design for reducers based on differential displacements of deceleration gears for satisfying the above properties. The structural stresses including vibration frequencies of the reducer are analyzed using Finite Element Methods (FEM) to observe the designed weaknesses of the related components. The kinematic characteristics of the reducer are simulated by SolidWorks motion analysis to identify the accuracy of the mechanisms. The geometric models are leaded into ANSYS to analyze the structural stresses and the vibrations. The analyzed results are further integrated with probabilistic theories to perform reliability design for the reducer. The studied results can provide useful information including the allowed loading and the reliabilities for the high speed-reduction reducer in using.