Patent ID: 7165473
Filing Date: 2007-01-23
Classification: F16C,F16H,Y10T

Abstract:
1. A wave gear device, comprising: an annular rigid internal gear; an annular flexible external gear; a wave generator for radially flexing the flexible external gear to form partial meshing with the rigid internal gear and to circumferentially move meshing positions of the gears; and a bearing for supporting the rigid internal gear and the flexible external gear in a relatively rotatable manner; wherein an outer ring of the bearing is fixed to the flexible external gear, and an inner ring of the bearing is a composite member in which the rigid internal gear is integrated; and wherein the composite member comprises an annular inner ring-forming member, a raceway surface formed on an outer peripheral surface of the inner ring-forming member, an annular internal teeth-forming member integrated with an inner peripheral surface of the inner ring-forming member, and internal teeth formed on an inner peripheral surface of the internal teeth-forming member; the inner ring-forming member is composed of bearing steel; the internal teeth-forming member is composed of a ductile casting; and the internal teeth-forming member is integrated with the inner ring-forming member by diffusion bonding.