EFFECT OF TOOTH WIDTH MODIFICATION ON WEAR IN BRASS SPUR GEARS

In this study, load distribution in meshing areas of single and double teeth of spur gears has been investigated. With a teeth modification, the load distribution was brought to a uniform state along the gear profile. In this gear, variable pressure distribution caused by the single and double teeth meshing and the radius of curvature along the active gear profile was approximate kept constant by maintaining a constant ratio of applied load to the tooth width (F/b) on every point. The modification made was solely based on the Hertz surface pressure distribution approach, which enables maintaining uniform distribution along the profile. The gears material was made of forging brass (CuZn38Pb2). In order to investigate clearly the effects of the wear on the gear profile shift were used. Experiments on wear both of modified gear and unmodified gear were made and the results were evaluated. It was found that wear depth along meshing area was almost uniform for the modified gears.