Tooth flank twist compensation method and test verification for gear grinding with variable-lead worm grinding wheel
YANG Jianjun
WU Guoshuo
FANG Yi
ZHANG Ling
LIU Gang
SU Jianxin
Abstract：[Objective]During the grinding of helical gears with helical crowning,tooth flank twist defects frequently occur,which degrade tooth flank accuracy and transmission performance.Accordingly,an anti-twist grinding method using variable-lead worm grinding wheels was proposed for helical gears with helical crowning.[Methods]Firstly,the instantaneous contact lines between the worm grinding wheel and the helical gear were calculated based on their meshing relation,and the tooth flank inclination deviation and tooth flank twist at different tooth width positions were obtained.Secondly,a variable-lead dressing motion model between the dressing roller and the compensation section of the worm grinding wheel was established according to the calculated twist values at three measurement positions.Finally,the calculation algorithm of tooth flank twist and the dressing motion algorithm of the roller were integrated into the numerical control system to develop a numerical control dressing program for variable-lead worm grinding wheels.[Results]The results show that after twist compensation,the twist of the left and right tooth flanks is reduced by 93.6%and 81.4%,respectively,which verifies the effectiveness of the proposed twist compensation algorithm.
Keywords：Helical crowningHigh speed transmissionTooth flank deviationVariable-lead worm grinding wheelTwist compensation
Publication Date：2026-08-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：6( 179-184 )