A kind of approximate definition method of grinding worm surface with variable meshing angle is proposed for grinding face gears. The influence of the parameter of the virtual shaper and the alignment errors of the grinding worm on the tooth surface deviation of face gear is investigated. A set of nonlinear contact equations is established for dressing grinding worm with standard double cone dressing wheel based on a kind of 5-axis CNC machine tools. The compensation method used to correct deviations of face gear tooth surface by dressing the corresponding points on the grinding wheel is derived, based on the corresponding relation between surface points of face gear and the meshing angles. Two grinding experiments are performed for both orthogonal and non-orthogonal face gears. The experiments indicated that the tooth surface precision of face gear ground by this method can reach level 6 by Chinese standard GB11365-89 comparing with the same size of bevel gear, and the pitch precision can reach level 4 which is higher.

提出了一种用于磨削面齿轮的变啮合角磨削蜗杆面的近似定义方法。研究了虚拟成形器参数和蜗轮蜗杆对中误差对面齿轮齿面偏差的影响。基于一种五轴数控机床，建立了一套标准双锥修整砂轮修整砂轮蜗杆的非线性接触方程。根据面齿轮齿面点与啮合角的对应关系，推导出了通过修整砂轮上的对应点来修正面齿轮齿面偏差的补偿方法。对正交和非正交面齿轮进行了两次磨削实验。