SYSTEMS AND METHODS FOR MEASURING BEARING ENDPLAY

• US 20120079893A1
• Filed: 04/21/2011
• Published: 04/05/2012
• Est. Priority Date: 10/01/2010
• Status: Active Grant

• Current Assignee: Temper AXLE Products Corporation, Temper Corporation
• Original Assignee: John E. Rode
• Inventors: RODE, John E.
• Granted Patent: US 8,359,936 B2
• Time in Patent Office: Days
• US Class Current: 73/862.23
• CPC Class Codes: F16C 2226/60 with threaded parts, e.g. bolt and nut connections in general F16B23/00 - F16B43/00
• CPC Class Codes: F16C 2229/00 Setting preload
• CPC Class Codes: F16C 25/06 Ball or roller bearings
• CPC Class Codes: F16C 41/008 Identification means, e.g. markings, RFID-tags; Data transfer means
• CPC Class Codes: G01L 5/24 for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
• CPC Class Codes: Y10T 29/53104 Roller or ball bearing
• CPC Class Codes: Y10T 29/5383 having fluid operator

Abstract

A system for use in measuring an end play of a wheel hub assembly includes a follower configured to extend through an opening in a cover connected to a wheel hub. The cover covers the wheel hub such that the cover inhibits access to an end of a shaft of the wheel hub assembly, and the follower is configured to contact the end through the opening. The follower is received in a holder engageable with the cover such that the follower is movable relative to the cover and the holder to allow the follower to extend from the holder to contact the end of the shaft. A frame has a cavity receiving a measurement probe extending outwardly from the cavity. The probe contacts the follower and is configured to measure movement of the follower to determine endplay of the bearing assembly on the shaft. The frame includes a plurality of legs extending from the frame to a hub mounted on the shaft and coupled to the bearing to support the frame relative to the hub.

Claims

1. A system for use in measuring an endplay of a bearing of a wheel hub assembly, the system comprising:

a follower configured to extend through an opening in a cover connected to a wheel hub, the cover covering the wheel hub such that the cover inhibits access to an end of a shaft of the wheel hub assembly, said follower configured to contact said end through said opening;

said follower received in a holder engageable with the cover such that said follower is movable relative to said cover and said holder to allow said follower to extend from said holder to contact the end of the shaft; and

a frame having a measurement probe attached thereto, said probe configured to contact said follower and measure relative movement of said follower to determine an endplay of a bearing of the hub assembly on the shaft;

said frame comprising a plurality of legs extending from said frame to a hub of the hub assembly mounted on said shaft and coupled to said bearing to support said frame relative to the hub.

2. The system of claim 1 further comprising a handle connected to said frame, said handle extending substantially perpendicularly relative to an axis of the shaft and extending to opposite sides of the axis.

3. The system of claim 1 further comprising a handle connected to said frame, said frame, said plurality of legs and said handle sufficiently rigid to allow a user to apply a force to said handle to move the hub in an axial direction relative to the shaft until a cessation of movement of the hub relative to the shaft

4. The system of claim 1 wherein said cover comprises a hubcap.

5. The system of claim 1 wherein said frame is spaced from said follower when said follower contacts the shaft to allow said frame to move toward and away from said follower and to allow said probe to measure movement of said frame relative to said follower.

6. The system of claim 1 further comprising a resilient member engaging said follower and said holder to bias a distal end of said follower away from said probe.

7. The system of claim 1 further comprising a resilient member engaging said follower and said holder to bias a distal end of said follower toward the shaft.

8. The system of claim 1 further comprising a spring engaging said follower and said holder to bias a distal end of said follower toward the shaft.

9. The system of claim 1 wherein said probe and said follower are axially aligned with an axis of the shaft.

10. The system of claim 1 further comprising an opening between two legs of said plurality of legs to allow a user to insert a tool into the opening such that the tool engages a nut holding said hub assembly on the shaft when the cover is separated from the hub.

11. The system of claim 1 wherein said plurality of legs is connectable to a plurality of wheel lugs of a wheel hub of the wheel hub assembly mounted on the shaft.

12. The system of claim 2 wherein said handle extends a substantially equal distance on each side of the axis of the shaft.

13. The system of claim 2 wherein said handle is connected to said frame by a plurality of connecting legs, said handle located on an opposite side of said frame relative to said follower.

14. A method for determining an endplay of a bearing of a wheel hub assembly mounted on a shaft, the method comprising;

extending a follower through an opening in a hub cover covering a hub of the wheel hub assembly and extending away from the hub, the follower contacting an end of the shaft;

connecting a plurality of legs of an endplay measuring apparatus to a hub of the hub assembly mounted on the shaft;

connecting a measurement probe to a frame of the apparatus;

the probe contacting the follower;

applying a force to the apparatus to move the hub in a first axial direction until a cessation of movement of the hub, determining a first measurement of the probe;

applying a force to the apparatus in a second axial direction opposite to the first axial direction until a second cessation of movement of the hub;

determining a second measurement of the probe after the second cessation of movement; and

determining a movement of the follower by the probe to determine an endplay of the bearing by comparing the first measurement to the second measurement.

15. The method of claim 14 further comprising extending a handle of the apparatus substantially perpendicularly relative to an axis of the shaft and extending to opposite sides of the axis.

16. The method of claim 14 further comprising receiving the follower in a holder engaging the hub cover such that the follower is movable relative to the cover and the holder to allow the follower to extend from the holder to contact the end of the shaft.

17. The method of claim 14 wherein the applying the force to the apparatus comprises applying the force to a handle of the apparatus connected to the frame and the plurality of legs to move the hub in a first axial direction until the cessation of movement of the hub.

18. The method of claim 14 further comprising turning the hub while the device is mounted to the hub to analyze roller alignment of the bearing.

19. The method of claim 14 further comprising removing the hub cover from the hub and using a wrench to adjust a tightness of a nut holding the hub assembly by extending the wrench through an opening between two legs of the plurality of legs.

20. The method of claim 14 further comprising a resilient member engaging the follower and the holder to bias a distal end of the follower away from the probe.

21. The method of claim 14 further comprising a resilient member engaging the follower and the holder to bias a distal end of the follower toward the shaft.

22. The method of claim 14 further comprising a spring engaging the follower and the holder to bias a distal end of the follower toward the shaft.