摘要：In order to improve the processing precision and shorten the hob manufacturing cycle of the face gear,a precision generating hobbing method for face gear with the assembly spherical hob is ***,the evolution of the cylindrical gear to spherical hob basic worm is analyzed,then the spherical hob basic worm is designed,thus the basic worm and spiral angle equation of spherical hob are ***,based on the design method of the existing hob,the development method of the assembly spherical hob is analyzed,the cutter tooth and the cutter substrate of the assembly hob are designed,and the whole assembly is ***,based on the need of face gear hobbing,a numerical control machine for gear hobbing is developed,and the equation of the face gear is ***,for reducing the face gear processing errors induced by equivalent installation errors,the error analysis model is established and the impacts of each error on the gear tooth surface are ***,the assembly spherical hob is manufactured and the gear hobbing test is *** to the measurement results,the processing parameters of face gear hobbing are modified,and the deviation of tooth surface is significantly reduced.