WO2014062622A1 - Anti-rotation feature for sleeves and washers in speed gears - Google Patents

Anti-rotation feature for sleeves and washers in speed gears Download PDF

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Publication number
WO2014062622A1
WO2014062622A1 PCT/US2013/064948 US2013064948W WO2014062622A1 WO 2014062622 A1 WO2014062622 A1 WO 2014062622A1 US 2013064948 W US2013064948 W US 2013064948W WO 2014062622 A1 WO2014062622 A1 WO 2014062622A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
washer
tab
planar surface
slot
Prior art date
Application number
PCT/US2013/064948
Other languages
French (fr)
Inventor
James Burns
Giovanni DIMATTEO
Donnie BABB
Original Assignee
Koyo Bearings Usa Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koyo Bearings Usa Llc filed Critical Koyo Bearings Usa Llc
Publication of WO2014062622A1 publication Critical patent/WO2014062622A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • F16C33/605—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings with a separate retaining member, e.g. flange, shoulder, guide ring, secured to a race ring, adjacent to the race surface, so as to abut the end of the rolling elements, e.g. rollers, or the cage

Definitions

  • the present invention relates generally to transmission bearing assemblies.
  • the present invention relates to a feature for preventing relative motion between a sleeve and a washer in the transmission bearing assembly.
  • Wear is known to occur in various types of transmissions due to the relative movement between the washers and the adjacent sleeves that are utilized in bearing assemblies in the speed gears of transmissions. Typically, this wear occurs at the location at which the end face of the sleeve abuts the adjacent face of the washer. As would be expected, the wear products that are produced by this relative rotation can lead to reduced bearing assembly performance, as well as reduced performance of the transmission.
  • One embodiment of the present disclosure provides a sleeve having a first end face, a second end face, and a cylindrical body extending therebetween, an outer surface of the body defining a raceway, a washer having an inner perimeter, an outer perimeter, a first planar surface and a second planar surface extending therebetween, the first planar surface and the second planar surface being substantially parallel and the first planar surface abutting the first end face of the sleeve, and a plurality of rollers disposed adjacent the raceway of the sleeve.
  • a diameter of the inner perimeter of the washer is less than a diameter of the outer surface of the sleeve, and the washer is non-rotatably fixed to the sleeve.
  • a sleeve having a first end face, a second end face, and a cylindrical body extending therebetween, an outer surface of the body defining a raceway, a washer having an inner perimeter, an outer perimeter, a first planar surface and a second planar surface extending therebetween, the first planar surface and the second planar surface being substantially parallel and the first planar surface abutting the first end face of the sleeve, a lock ring including an inner perimeter, an outer perimeter, a first planar surface and a second planar surface extending therebetween, and at least one tab disposed on its inner perimeter, and a plurality of rollers disposed adjacent the raceway of the sleeve.
  • the tab of the lock ring engages both the washer and the sleeve so that the washer is non-rotatably fixed to the sleeve.
  • Figure 1 is a perspective, partial cross-sectional view of a transmission bearing assembly including an anti-rotation feature in accordance with an embodiment of the present disclosure
  • Figure 2 is a perspective, partial cross- sectional view of the transmission bearing assembly as shown in Figure 1 ;
  • Figure 3 is a perspective view of a lock ring of the transmission bearing assembly as shown in Figures 1 and 2;
  • Figure 4 is a perspective view of a sleeve of the transmission bearing assembly as shown in Figures 1 and 2;
  • Figure 5 is a perspective view of a washer of the transmission bearing assembly as shown in Figures 1 and 2;
  • Figure 6 is a perspective view of a transmission bearing assembly including an alternate embodiment of an anti-rotation feature in accordance with the present disclosure.
  • Figure 7 is a partial cross-sectional view of the transmission bearing assembly as shown in Figure 6.
  • an anti- rotation device in accordance with the present disclosure includes a lock ring 10 having at least one tab 12, preferably two tabs 12, disposed on its inner perimeter 14, as best seen in Figure 3.
  • Each tab 12 includes a radially-extending portion 12a extending inwardly from inner perimeter 14 toward the longitudinal center axis of the lock ring, and an axially-extending portion 12b extending from the distal end of radial portion 12a.
  • Axial portion 12b is substantially perpendicular to radial portion 12a and is substantially parallel to the longitudinal center axis.
  • sleeve 20 and washer 30 each include a number of slots 26 and 32, respectfully, corresponding to the number of tabs 12 on lock ring 10. Slots 26 and 32 are configured to receive a portion of each tab 12 when assembled, thereby non-rotatably locking the sleeve, the washer and the lock ring.
  • Each slot 26 of sleeve 20 extends axially- inwardly from an end face 24 of sleeve 20.
  • the width of slot 26 in the circumferential direction about sleeve 20 is substantially the same as the width of radial portion 12a of tab 12.
  • Each slot 26 can be machined, ground, broached, milled or forged into the end face of sleeve 20.
  • Each slot 32 of washer extends radially-outwardly from inner perimeter 34 of washer 30.
  • the width of each slot 32 in the circumferential direction is substantially the same as the width of axial portion 12b of tab 12.
  • Each slot 32 of washer 30 can be stamped, machined, ground or fine blanked into the inner perimeter 34 which defines the washer's bore.
  • the disclosed anti-rotation ring 10 can be used with a single sleeve and washer arrangement, as well as for washers which are positioned between two adjacent sleeves.
  • an additional pair of slots 32 can be formed in washer 30 to receive a pair of tabs 12 of an additional lock ring 10, positioned on the opposite side of washer 30 from the first lock ring.
  • FIG. 6 A second embodiment of an anti-rotation device in accordance with the present disclosure is shown in Figures 6 and 7.
  • the anti-rotation feature includes a washer 30 that is non-rotatably fixed to sleeve 20 by a plurality of pins 50, more specifically three pins in the present example.
  • a first end of each pin 50 is received in a corresponding blind bore 28 formed in an end face 24 of sleeve 20.
  • Each blind bore 28 is configured such that a portion of a corresponding pin 50 received therein extends outwardly beyond end face 24.
  • the axially-extending portions of the pins are received in corresponding through bores 36 defined by washer 30, thereby non- rotatably fixing washer 30 to sleeve 20.
  • Pins 50 are preferably received in bores 28 and 36 in a light press-fit.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

A roller bearing assembly, comprising a sleeve (20) having a first end face, a second end face, and a cylindrical body extending therebetween, an outer surface (22) of the body defining a raceway, a washer (30) having an inner perimeter (34), an outer perimeter, a first planar surface and a second planar surface extending therebetween, the first planar surface and the second planar surface being substantially parallel and the first planar surface abutting the first end face (24) of the sleeve (20), and a plurality of rollers (44) disposed adjacent the raceway of the sleeve. A diameter of the inner perimeter (34) of the washer (30) is less than a diameter of the outer surface (22) of the sleeve (20), and the washer (30) is non-rotatably fixed to the sleeve (20).

Description

NAME OF INVENTION
ANTI-ROTATION FEATURE FOR SLEEVES
AND WASHERS IN SPEED GEARS
FIELD OF THE INVENTION [0001] The present invention relates generally to transmission bearing assemblies.
More particularly, the present invention relates to a feature for preventing relative motion between a sleeve and a washer in the transmission bearing assembly.
BACKGROUND OF THE INVENTION [0002] Wear is known to occur in various types of transmissions due to the relative movement between the washers and the adjacent sleeves that are utilized in bearing assemblies in the speed gears of transmissions. Typically, this wear occurs at the location at which the end face of the sleeve abuts the adjacent face of the washer. As would be expected, the wear products that are produced by this relative rotation can lead to reduced bearing assembly performance, as well as reduced performance of the transmission.
[0003] The present invention recognizes and addresses considerations of prior art constructions and methods.
SUMMARY OF THE INVENTION
[0004] One embodiment of the present disclosure provides a sleeve having a first end face, a second end face, and a cylindrical body extending therebetween, an outer surface of the body defining a raceway, a washer having an inner perimeter, an outer perimeter, a first planar surface and a second planar surface extending therebetween, the first planar surface and the second planar surface being substantially parallel and the first planar surface abutting the first end face of the sleeve, and a plurality of rollers disposed adjacent the raceway of the sleeve. A diameter of the inner perimeter of the washer is less than a diameter of the outer surface of the sleeve, and the washer is non-rotatably fixed to the sleeve.
[0005] Another embodiment of the present disclosure provides a sleeve having a first end face, a second end face, and a cylindrical body extending therebetween, an outer surface of the body defining a raceway, a washer having an inner perimeter, an outer perimeter, a first planar surface and a second planar surface extending therebetween, the first planar surface and the second planar surface being substantially parallel and the first planar surface abutting the first end face of the sleeve, a lock ring including an inner perimeter, an outer perimeter, a first planar surface and a second planar surface extending therebetween, and at least one tab disposed on its inner perimeter, and a plurality of rollers disposed adjacent the raceway of the sleeve. The tab of the lock ring engages both the washer and the sleeve so that the washer is non-rotatably fixed to the sleeve.
[0006] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate one or more embodiments of the invention and, together with the description, serve to explain the principles of the invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] A full and enabling disclosure of the present invention, including the best mode thereof, directed to one of ordinary skill in the art, is set forth in the specification, which makes reference to the appended drawings, in which:
[0008] Figure 1 is a perspective, partial cross-sectional view of a transmission bearing assembly including an anti-rotation feature in accordance with an embodiment of the present disclosure;
[0009] Figure 2 is a perspective, partial cross- sectional view of the transmission bearing assembly as shown in Figure 1 ;
[0010] Figure 3 is a perspective view of a lock ring of the transmission bearing assembly as shown in Figures 1 and 2;
[0011] Figure 4 is a perspective view of a sleeve of the transmission bearing assembly as shown in Figures 1 and 2;
[0012] Figure 5 is a perspective view of a washer of the transmission bearing assembly as shown in Figures 1 and 2;
[0013] Figure 6 is a perspective view of a transmission bearing assembly including an alternate embodiment of an anti-rotation feature in accordance with the present disclosure; and
[0014] Figure 7 is a partial cross-sectional view of the transmission bearing assembly as shown in Figure 6.
[0015] Repeat use of reference characters in the present specification and drawings is intended to represent same or analogous features or elements of the invention according to the disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0016] Reference will now be made in detail to presently preferred embodiments of the invention, one or more examples of which are illustrated in the accompanying drawings. Each example is provided by way of explanation, not limitation, of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope and spirit thereof. For instance, features illustrated or described as part of one embodiment may be used on another embodiment to yield a still further embodiment. Thus, it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.
[0017] More specifically, as shown in Figures 1-5, one embodiment of an anti- rotation device in accordance with the present disclosure includes a lock ring 10 having at least one tab 12, preferably two tabs 12, disposed on its inner perimeter 14, as best seen in Figure 3. Each tab 12 includes a radially-extending portion 12a extending inwardly from inner perimeter 14 toward the longitudinal center axis of the lock ring, and an axially-extending portion 12b extending from the distal end of radial portion 12a. Axial portion 12b is substantially perpendicular to radial portion 12a and is substantially parallel to the longitudinal center axis.
[0018] As shown in Figures 4 and 5, sleeve 20 and washer 30 each include a number of slots 26 and 32, respectfully, corresponding to the number of tabs 12 on lock ring 10. Slots 26 and 32 are configured to receive a portion of each tab 12 when assembled, thereby non-rotatably locking the sleeve, the washer and the lock ring. Each slot 26 of sleeve 20 extends axially- inwardly from an end face 24 of sleeve 20. The width of slot 26 in the circumferential direction about sleeve 20 is substantially the same as the width of radial portion 12a of tab 12. Each slot 26 can be machined, ground, broached, milled or forged into the end face of sleeve 20. Each slot 32 of washer extends radially-outwardly from inner perimeter 34 of washer 30. The width of each slot 32 in the circumferential direction is substantially the same as the width of axial portion 12b of tab 12. Each slot 32 of washer 30 can be stamped, machined, ground or fine blanked into the inner perimeter 34 which defines the washer's bore.
[0019] Referring now to Figures 1 and 2, the transmission bearing assembly is shown in the assembled state, including the first embodiment of the anti-rotation feature of the present disclosure. When assembled, inner perimeter 14 of lock ring 10 is adjacent outer surface 22 of sleeve so that radial portion 12a of each tab 12 is received in a corresponding slot 26 of sleeve 20. Similarly, an axial portion 12b of each tab 12 is received in a corresponding slot 32 of washer 30. As such, sleeve 20 and washer 30 are non-rotatably fixed to each other by lock ring 10. The anti-rotation feature is constructed so as not to interfere with the operation of roller elements 44 which are received in roller pockets 42 of bearing cage 40.
[0020] Note, the disclosed anti-rotation ring 10 can be used with a single sleeve and washer arrangement, as well as for washers which are positioned between two adjacent sleeves. For example, an additional pair of slots 32 can be formed in washer 30 to receive a pair of tabs 12 of an additional lock ring 10, positioned on the opposite side of washer 30 from the first lock ring.
[0021] A second embodiment of an anti-rotation device in accordance with the present disclosure is shown in Figures 6 and 7. As shown, the anti-rotation feature includes a washer 30 that is non-rotatably fixed to sleeve 20 by a plurality of pins 50, more specifically three pins in the present example. A first end of each pin 50 is received in a corresponding blind bore 28 formed in an end face 24 of sleeve 20. Each blind bore 28 is configured such that a portion of a corresponding pin 50 received therein extends outwardly beyond end face 24. The axially-extending portions of the pins are received in corresponding through bores 36 defined by washer 30, thereby non- rotatably fixing washer 30 to sleeve 20. Pins 50 are preferably received in bores 28 and 36 in a light press-fit.
While one or more preferred embodiments of the invention are described above, it should be appreciated by those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope and spirit thereof. It is intended that the present invention cover such modifications and variations as come within the scope and spirit of the appended claims and their equivalents.

Claims

What is claimed is:
1. A roller bearing assembly, comprising:
a sleeve having a first end face, a second end face, and a cylindrical body extending therebetween, an outer surface of the body defining a raceway; a washer having an inner perimeter, an outer perimeter, a first planar surface and a second planar surface extending therebetween, the first planar surface and the second planar surface being substantially parallel and the first planar surface abutting the first end face of the sleeve; and
a plurality of rollers disposed adjacent the raceway of the sleeve,
wherein a diameter of the inner perimeter of the washer is less than a diameter of the outer surface of the sleeve, and the washer is non-rotatably fixed to the sleeve.
2. The roller bearing assembly of claim 1 , further comprising:
a lock ring including an inner perimeter, an outer perimeter, a first planar surface and a second planar surface extending therebetween, and at least one tab disposed on its inner perimeter;
at least one slot extending axially inwardly from the first end face of the sleeve; and at least one slot extending radially outwardly from the inner perimeter of the washer, wherein the lock ring is slidably received about the outer surface of the body of the sleeve and the at least one tab is received in both the at least one tab of sleeve and the at least one tab of the washer.
3. The roller bearing assembly of claim 2, wherein the inner perimeter of the lock ring is concentric about the outer surface of the sleeve and the first planar surface of the lock ring is adjacent to, and parallel to, the first planar surface of the washer.
4. The roller bearing assembly of claim 2, wherein the at least one tab further comprises a radially-extending portion and an axially-extending portion disposed at a distal end of the radially extending portion.
5. The roller bearing assembly of claim 4, wherein the radially-extending portion of the at least one tab is received in the at least one slot of the sleeve and the axially-extending portion of the at least one tab is received in the at least one slot of the washer.
6. The roller bearing assembly of claim 5, wherein the at least one tab further comprises a pair of tabs, the at least one slot defined by the sleeve further comprises a pair of slots, and the at least one slot defined by the washer further comprises a pair of slots, wherein each tab is received by a corresponding slot of the sleeve and a corresponding slot of the washer.
7. The roller bearing assembly of claim 4, wherein a circumferential width of the at least one slot defined by the sleeve is substantially the same as a circumferential width of the radially-extending portion of the at least one tab, and a circumferential width of the at least one slot defined by the washer is substantially the same as a circumferential width of the axially- extending portion of the at least one tab.
8. The roller bearing assembly of claim 1 , further comprising:
at least one locking pin;
at least one axially-extending throughbore defined by the washer; and
at least one axially-extending blind bore defined in the first end face of the sleeve, wherein the at least one locking pin is received in both the throughbore and blind bore in a press fit.
9. The roller bearing assembly of claim 8, wherein the at least one locking pin further comprises a pair of locking pins, the at least one blind bore defined by the sleeve further comprises a pair of blind bores, and the at least one through bore defined by the washer further comprises a pair of through bores, wherein each locking pin is received by a corresponding blind bore of the sleeve and a corresponding through bore of the washer.
10. A roller bearing assembly, comprising:
a sleeve having a first end face, a second end face, and a cylindrical body extending therebetween, an outer surface of the body defining a raceway;
a washer having an inner perimeter, an outer perimeter, a first planar surface and a second planar surface extending therebetween, the first planar surface and the second planar surface being substantially parallel and the first planar surface abutting the first end face of the sleeve;
a lock ring including an inner perimeter, an outer perimeter, a first planar surface and a second planar surface extending therebetween, and at least one tab disposed on its inner perimeter; and
a plurality of rollers disposed adjacent the raceway of the sleeve,
wherein the tab of the lock ring engages both the washer and the sleeve so that the
washer is non-rotatably fixed to the sleeve.
11. The roller bearing assembly of claim 10, further comprising:
at least one slot extending axially inwardly from the first end face of the sleeve; and at least one slot extending radially outwardly from the inner perimeter of the washer, wherein the lock ring is slidably received about the outer surface of the body of the sleeve and the at least one tab is received in both the at least one tab of sleeve and the at least one tab of the washer.
12. The roller bearing assembly of claim 11 , wherein the at least one tab further comprises a radially-extending portion and an axially-extending portion disposed at a distal end of the radially extending portion.
13. The roller bearing assembly of claim 12, wherein the radially-extending portion of the at least one tab is received in the at least one slot of the sleeve and the axially-extending portion of the at least one tab is received in the at least one slot of the washer.
14. The roller bearing assembly of claim 13, wherein a circumferential width of the at least one slot defined by the sleeve is substantially the same as a circumferential width of the radially-extending portion of the at least one tab, and a circumferential width of the at least one slot defined by the washer is substantially the same as a circumferential width of the axially- extending portion of the at least one tab.
15. The roller bearing assembly of claim 10, wherein the at least one tab further comprises a pair of tabs, the at least one slot defined by the sleeve further comprises a pair of slots, and the at least one slot defined by the washer further comprises a pair of slots, wherein each tab is received by a corresponding slot of the sleeve and a corresponding slot of the washer.
PCT/US2013/064948 2012-10-15 2013-10-15 Anti-rotation feature for sleeves and washers in speed gears WO2014062622A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261713963P 2012-10-15 2012-10-15
US61/713,963 2012-10-15

Publications (1)

Publication Number Publication Date
WO2014062622A1 true WO2014062622A1 (en) 2014-04-24

Family

ID=49667551

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2013/064948 WO2014062622A1 (en) 2012-10-15 2013-10-15 Anti-rotation feature for sleeves and washers in speed gears

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5390155U (en) * 1976-12-24 1978-07-24
DE3212976A1 (en) * 1982-04-07 1983-10-13 Robert Bosch Gmbh, 7000 Stuttgart Rolling contact bearing
WO1996022474A1 (en) * 1995-01-20 1996-07-25 The Timken Company Bearing arrangements
JP2000065847A (en) * 1998-08-20 2000-03-03 Nippon Seiko Kk Rolling bearing unit with rotational speed detection device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5390155U (en) * 1976-12-24 1978-07-24
DE3212976A1 (en) * 1982-04-07 1983-10-13 Robert Bosch Gmbh, 7000 Stuttgart Rolling contact bearing
WO1996022474A1 (en) * 1995-01-20 1996-07-25 The Timken Company Bearing arrangements
JP2000065847A (en) * 1998-08-20 2000-03-03 Nippon Seiko Kk Rolling bearing unit with rotational speed detection device

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