Influence of the turning process on the distortion of disks for gear manufacture

This study presents investigations on the fundamental mechanisms of part distortion during the machining of disks (cylindrical gear base bodies). The work focuses on the effects of machining induced residual stresses and inhomogeneous material removal. In this context the workpiece clamping was investigated as a major impact factor on the distortion. In order to analyze and describe the complex shape deviations, an appropriate distortion characterization method was developed. Since the distortion of disks directly affects the gear wheel quality, the results will help to understand the formation of gear distortion as well as to reduce and compensate it.