Stress analysis of the interference fit in helical gear transmission

摘要

The material mechanics method is important for structure analysis and for reducing the volume and weight of the driving parts in gear transmission. In this paper, a mathematical model is presented for the calculation and analysis of the interference fit joint. The formulation for the gear and shaft are provided in the paper. The calculation includes two aspects: first, calculating the contact stress in the matching surface and the minimum interference required under a known load; second, calculating the maximum allowable interference for the connecting parts in which no deformation or rupture occur. This method may also be applied to other interference fit joints.