基于数控切齿的弧线齿面齿轮啮合特性研究

研究了弧线齿面齿轮的数控切齿及其啮合特性.基于假想产形齿轮的概念,同时考虑了刀具法向截面的修形,推导弧线齿面齿轮的齿面方程;以坐标变换为工具,建立其机床加工模型,确定各运动轴的多项式表达式;在此基础上,建立了考虑安装误差的弧线齿面齿轮副接触分析模型.计算结果表明:通过面齿轮的齿面修形,可以降低啮合转换点处的传动误差幅值,并获得较好的传动误差曲线.

Study on meshing characteristics of face gear drive with arcuate tooth based of manufacture on NC machine

Numerical control machining of face gear with arcuate tooth has been proposed,and the meshing characteristics was investigated.Tooth surface equation that was based on the concept of imaginary gear cutter has been derived,flank modification had also been considered;the machining principle in the general multi-axle numerical control machine tool was created by using coordinate transformation,then the polynomial expression of the motion axes can be obtained;tooth contact analysis(TCA)model under different assembly conditions was established.The numerical results reveal that the bearing contacts are not sensitive to the errors of misalignments,and a more favorable type of parabolic function of transmission errors with better symmetry and reduced amplitude may be obtained according to the modification of the face gear.