Optimisation of the Tooth Flank Geometry for Non-Standard Spur gear

Abstract

In order to increase the transmissible power level of the plastic spur gears, a non-standard tooth is designed, with a variable geometry along the gear facewidth. The variation of the tooth flank geometry, generated by a simple kinematics, is a consequence of a specific cutting-tool geometry and position. Due to the gear tooth complex geometry, the traditional numerical modeling and analysis of the 3D surfaces is replaced by the solid modeling technique. The non-standard gear generation process is simulated and the virtual gears are further used to investigate the gear basis formats and other criteria of gear quality. The data base unable the selection of the tooth flank geometry that would lead to a proper gear mesh.