ECCENTRIC ROCKING TYPE GEAR DEVICE AND ASSEMBLING METHOD FOR CRANK SHAFT IN ECCENTRIC ROCKING TYPE GEAR DEVICE

摘要

An eccentric oscillating gear device comprises a crankshaft 46 having an eccentric portion 46a, 46b, an externally toothed gear 48a, 48b having external teeth and a through-hole in which the eccentric portion 46a, 46b is inserted, an outer cylinder 12, and a carrier 14. The carrier 14 rotatably supports the crankshaft 46. The outer cylinder 12 has internal teeth 24 meshed with the external teeth of the externally toothed gear. The eccentric oscillating gear device is provided with rotational phase adjusting means 58 for setting an orientation of the crankshaft 46 about an axis thereof, on the basis of orientations of the outer cylinder 12 and the carrier 14 about an axis thereof.