An innovative generated approach to dressing the worm for grinding spur face gears

Abstract For the worm grinding of spur face gears, a new geometric analysis of the worm surface is implemented to reveal the theoretical basis for dressing the worm with generated approaches. It shows the worm surface can be described as a swept surface generated from its axial cross-sectional profile, which is designated as the profile of dressing wheel. Comparing to the previous approaches, the appropriate profile is found to the dressing tool, so the worm, as well as the face gear can be accurately manufactured. Example is given to validate the proposed method with theoretical calculation, simulations, and practical experiments.