the principle of toroidal drive and the forming process of the stator for this kind of drive system are analyzed. By enveloping method of gear meshing theory
the tooth profile equation of the stator is introduced. on the basis discussed above
the enveloping method of manfactruing the stator is studied and the equipment to accomplish the enveloping method is designed and manufactured. Finally
the stator of toroidal drive is manufactured on the hobbing machine by enveloping method.