Dynamic Behavior of Light-Loaded Gear

A testing machine was made to investigate the dynamic behavior of an especially light-loaded gear whose load was due to the friction occurring between the gear and the gear shaft. A hobbed gear and a ground gear were used as the light-loaded gear to measure the fillet stresses of the gears in the cases with unifrom transmitted tooth load and with varying transmitted tooth load. Furthermore, the theoretical analysis was done by considering both the separation of teeth and the mesh with back faces which was not usually used. The main results were as follows. Applying transmitted tooth load variation, the degrees of the separation of teeth and the meshing with the back faces increased, and the fillet stress of the light-loaded gear increased. When the errors of the light-loaded gear decreased, the fillet stress can be decreased.