DYNAMIC BEHAVIOR OF PLANETARY GEAR - 2. DISPLACEMENT OF SUN GEAR AND RING GEAR.

Abstract

The displacement of sun and ring gear from their basic positions was measured. Then, the relations among the dynamic loads of sun gear tooth, the load distribution and the displacement of sun and ring gear were studied. The results are as follows: in the low speed region, the center of sun gear are shown with the geometrical locus irregularly coursed by various errors of gear equipment. However, in the high speed region this locus approaches to circle but the radius grows large with increase of speed; the displacement of ring gear mainly occurs by elastic deformation. The ring gear resonates when the mesh frequency of teeth coincides to the natural frequency; variation of the dynamic load of gear tooth and load distribution are closely connected with the displacement of sun and ring gear.