Patent ID: 11236803

Abstract:
A nutational cycloidal reducer reduces an input speed to an output speed by a reduction ratio. The reducer includes a timing ring having an internal wall with a series of longitudinally extending tooth profiles, an output connected to the timing ring, a pulley having a central opening, a series of longitudinally extending tooth profiles and a plurality of circumferentially disposed pin bores. An input shaft has first and second shaft portions. The first portion is concentric with a longitudinal axis and the second portion is eccentric to the axis. A plate has a central opening. The pulley is positioned in the timing ring with some of the pulley and timing ring tooth profiles engaged with each other. The second shaft portion is positioned in the pulley and the plate and drives the pulley in a nutational movement. The pulley has one or more less tooth profiles than the timing ring, such that the reduction ratio is defined by # of timing ring tooth profiles/(# of timing ring tooth profiles−# of pulley tooth profiles).