齿轮装夹倾斜误差对齿轮精度检测的影响分析

针对一种可胀芯轴装夹齿轮产生倾斜误差影响齿轮精度检测的问题,基于齿轮装夹定位原理,分析造成齿轮装夹倾斜误差的原因。应用小位移旋量SDT(Small Displacement Torsor)方法构建含误差的齿面模型,分析了装夹倾斜误差对齿轮偏差精度影响程度,利用打表找正方法设置3种装夹倾斜角度,通过齿轮检测中心对齿轮3种装夹倾斜角度下的9项偏差指标进行检测,得出了装夹倾斜误差对齿轮精度检测的影响规律。结果表明,装夹倾斜误差对齿轮检测精度影响较大是f_Hβ、F_β和F_p,影响较小的是f_fα、f_Hα和F_α,影响不敏感或微小的是f_fβ、f_pt和F_r,进一步完善了齿轮装夹工艺理论。

Analysis of the Influence of Gear Clamping Tilt Error on Cylindrical Gear Accuracy in Testing

Aiming at the problem that the tilting error caused by the clamping gear with expandable core shaft affects the accuracy test of the gear,the cause of the tilting error is analyzed based on positioning principle of gear clamping.By using the Small Displacement Torsor(SDT)Method,the tooth surface model with error is constructed,the influence of clamping tilting error on gear deviation accuracy is analyzed.The nine deviation indexes of three clamping angles of gears are detected by gear detection center,playing table alignment method setting three clamping angle,the influence law of clamping tilting error on gear precision detection is obtained.The results show that,the great influence of clamping tilting error on gear detection accuracy is fHβ,Fβand Fp,the less important influence is ffα,fHαand Fα,the influence is insensitive or subtle is ffβ,fpt and Fr,so that further improve the gear clamping process theory.