The invention provides a direct-drive
actuator for
robot finger joints, and belongs to the technical field of
robot accessories. The direct-drive
actuator for the
robot finger joint comprises an outer rotor motor, an inner rotor motor and an
actuator body, the
harmonic reducer comprises a flexible bearing, a flexible wheel and a steel wheel, the damping
assembly comprises a rigid constraint ring and a damping
rubber ring, the outer ring surface of the rigid constraint ring is matched and fixedly connected with the inner ring of the flexible bearing, the inner ring surface of the rigid constraint ring is circular, the outer ring surface of the damping
rubber ring is fixedly connected with the inner ring surface of the rigid constraint ring, and the damping
rubber ring is fixedly connected with the inner ring surface of the rigid constraint ring. The inner ring surface of the damping rubber ring is fixedly connected with the outer circumferential surface of the outer rotor, main ribs are arranged at the two ends of the inner ring surface of the rigid restraint ring in the
long axis direction and the two ends of the inner ring surface of the rigid restraint ring in the
short axis direction, and the main ribs protrude in the radial direction and sink into the inner ring surface of the damping rubber ring. The direct-driven actuator for the
robot finger joint can effectively prevent deformation of the outer rotor serving as a wave generator.