Study on the Influence of Errors on the Meshing Performance of a New Kind of Double-roller Enveloping Hourglass Worm Gearing

The meshing equation, the normal curvature and lubrication angle equations of non-backlash double-roller enveloping hourglass worm gearing which involves several mismatch errors of worm parameters were established for the first time in order to study the effects of the errors on the performance of the worm gearing.By using the corresponding computer program the influence rule of the changing of the setover error of the roller, the angular position error of the worm wheel axis, the centre distance errors, the angular pitch error and the error of shaft angle are analyzed.The study shows that the angular pitch error and the angular position error of the worm wheel axis have major influence upon the performance of the worm compared with other errors.So it is important to reduce the angular pitch error and the angular position error of the worm wheel axis when process planning is made.The results obtained from the study are beneficial to making appropriate process planning and helpful for the next study.