Research of Influence of Engagement Pairing of the Corrected Worm Gear with Involute Worm on the Life and Contact Pressure

The impact of meshing type in involute worm gears as well as the effect of tooth correction and their wear are analyzed by the author's own method for calculating worm gear life. Qualitative and quantitative regularities are established regarding the effect of tooth wear on the variation in the maximum contact pressures and minimum life of the gear. The minimum life of the gear with triple-pair meshing is higher by 1.46 times when compared to that of the gear with double-pair meshing. Following the tooth correction, the minimum gear life is increased by 1.22 times. The maximum contact pressure under the triple-pair meshing conditions is lower by 1.22 times when compared to the double-pair meshing case, and the correction of the gear teeth leads to a reduction in the maximum contact pressure by 1.28 times. Predictive estimation of the specified contact parameters and tribotechnical characteristics of the worm gear was performed using experimentally determined indicators of material wear resistance.