Research on Bending Strength Properties of Spur Gears with a Thin Rim

抄録

In the present paper, the stresses and deformtion at tooth and rim of gears with a thin rim caused by loading on tooth were examined by various experiments and finite element method. Moreover, the bending fatigue strength of gears with a thin rim was compared with that of solid gears. The following conclusions were obtained. (1) The change of stresses at the root fillet of tooth of gears with a thin rim is partial alternating. For this reason the bending fatigue strength is lower than that of solid gears. (2) A practical formla of stresses at loaded side of the root fillet of tooth corresponding to the center of sector hole can be introduced, and consequently the bending fatigue limit of gears with a thin rim can be estimated from the endurance limit diagram.