Abstract
This paper presents a study on the root stresses of thin-rimmed spur gears due to press-fitting. The stresses of the gear were analysed by means of the finite element method (FEM). In this analysis, elastic contact between the gear and the shaft or bush was taken into consideration. Also, the root stresses were measured. The effects of the rim and bush thicknesses, the number of teeth, and the interference on the stresses at the root fillet and at the contacting surface were examined. On the basis of these computed results, a practical formula for the mdximum true root stress of a thin-rimmed spur gear press-fitted to a shaft was derived.
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