Title: Ball transfer mechanism with polycrystalline diamond bearing support

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.

Inventors:

Raymond, David W.

Issue Date:

2021-04-06

Research Org.:

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1823806

Patent Number(s):

10968700

Application Number:

15/726,506

Assignee:

National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL B06B - METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, {e.g.} FOR PERFORMING MECHANICAL WORK IN GENERAL

E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING

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B - PERFORMING OPERATIONS B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL B06B - METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, {e.g.} FOR PERFORMING MECHANICAL WORK IN GENERAL

B06B1/183 - {operating with reciprocating masses}

E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING

E21B17/076 - {between rod or pipe and drill bit}
E21B19/086 - with a fluid-actuated cylinder
E21B21/01 - Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
E21B4/003 - {Bearing, sealing, lubricating details
E21B4/02 - Fluid rotary type drives
E21B4/10 - continuous unidirectional rotary motion of shaft or drilling pipe effecting consecutive impacts

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01B - MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES

F01B1/0644 - {Pistons}

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DOE Contract Number:  

NA0003525

Resource Type:

Patent

Resource Relation:

Patent File Date: 10/06/2017

Country of Publication:

United States

Language:

English