The invention discloses a
slewing bearing worm wheel outer gear ring
processing method and a rotary driving device. The
processing method comprises the following steps: rough turning, semi finish turning, roller path
thermal treatment,
tempering, finish turning,
hobbing, hole
processing and roll path lathing and
grinding. The rotary driving device comprises a worm wheel
slewing bearing and a worm;conical roller bearings are arranged on the two side walls of the worm; a
slewing bearing worm wheel outer gear ring is processed through a large-
diameter hob; when the worm wheel and the worm drivefor operation, certain space exists between the dedendum circle of the worm wheel and the addendum circle of the worm, and an artificial oil
culvert is formed in the space, so that the lubricating condition can be effectively improved and the actual contact area can be enlarged, the
coefficient of friction and the contact stress value are reduced, and the purpose of improving the driving
bearing capacity of the worm wheel and the worm is finally realized; and in addition, the worm wheel is processed by adopting the large-
diameter hob, drum type modification is carried out in the tooth direction, and along with load increase, the
contact spot becomes larger and larger, so that the
bearing capacity of the worm wheel is improved, the transmission
noise of a rod pair is lowered, and the service life is prolonged.