Optimum design and manufacturing robustness for gear whine of helical gear

This paper shows the effect of both gear dimensions (macro design) and tooth surface design (micro design) with manufacturing errors on transmission error, a major exciter of gear whine. Gear dimensions, i.e. helix angle, face width and so on, and tooth surface modification, i.e. profile and lead crowning and bias modification, affect the meshing performance of helical gear sets that includes the progress of meshing and the shape on both contact lines and the path of contact due to the diagonal location of the contact lines of helical gear sets. As a result, transmission error is affected by the location and tooth surface shape along these contact lines. The effect of manufacturing deviation of tooth surface errors, i.e. surface slope and crowning errors, on transmission error is simultaneously considered. Designing gear sets, gear dimensions themselves could mainly decide the characteristics of transmission error, even when the different amounts of optimized tooth surface modification are added.