Ball transfer mechanism with polycrystalline diamond bearing support
| DWPI Title: Ball transfer mechanism for harmonic drive and piston motor, has retainers that are preloaded to enable bi-directional cycling of motor, and seat portion is provided with hard metal outer layer and polycrystalline diamond core portion |
| Abstract: A ball transfer mechanism for a harmonic drive and linear piston motor is disclosed. The ball transfer mechanism includes a spherical ball and a cylindrical seat portion. The seat portion defines a hemispherical shaped recess with a contour for receiving the ball. The ball transfer mechanism is in an exterior wall of a housing for converting rotary motion to linear motion, driving a linear piston motor. The harmonic drive drives a rotor of the linear piston motor. The harmonic drive includes a hollow cylindrical coupler portion engaging a rotor portion for transferring torque to the rotor portion. Transfer mechanisms disposed along a housing wall of the linear piston motor engage the coupler portion. The coupler portion includes harmonic cam grooves for receiving spherical balls in the ball transfer mechanism that drives rotational motion in the rotor in response to axially linear movement of the piston assembly. |
| Use: Ball transfer mechanism for harmonic drive and linear piston motor. |
| Advantage: The drive ball retainers are installed over cylindrical coupler with openings that match axial location of harmonic cam grooves to receive installation of ball transfer assemblies. |
| Novelty: The mechanism has multiple spherical balls and corresponding cylindrical seat portions of a hollow cylindrical housing. The corresponding seat portions define a hemispherical recess with a contour for receiving spherical balls. The ball transfer mechanism main portion is placed within an exterior wall of the hollow cylindrical housing for converting rotary motion to linear motion for driving linear piston motor (100) placed within the housing. The retainers for hollow cylindrical housing are preloaded to enable bi-directional cycling of the linear piston motor. The seat portion is provided with a hard metal outer layer and a polycrystalline diamond core portion. |
| Filed: 10/6/2017 |
| Application Number: US15726506A |
| Tech ID: SD 14330.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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