WO2011019703A1 - Procédé et dispositif pour la prévention du glissement des bagues d'un palier - Google Patents

Procédé et dispositif pour la prévention du glissement des bagues d'un palier Download PDF

Info

Publication number
WO2011019703A1
WO2011019703A1 PCT/US2010/044995 US2010044995W WO2011019703A1 WO 2011019703 A1 WO2011019703 A1 WO 2011019703A1 US 2010044995 W US2010044995 W US 2010044995W WO 2011019703 A1 WO2011019703 A1 WO 2011019703A1
Authority
WO
WIPO (PCT)
Prior art keywords
race
engagement
bearing assembly
backface
engagement feature
Prior art date
Application number
PCT/US2010/044995
Other languages
English (en)
Inventor
Michael A. Gromosiak
Jeffrey W. Schumacher
Frederic C. Billet
Justin P. Bill
Original Assignee
The Timken Company
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 The Timken Company filed Critical The Timken Company
Publication of WO2011019703A1 publication Critical patent/WO2011019703A1/fr

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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/063—Fixing them on the shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • 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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/063—Fixing them on the shaft
    • F16C35/0635—Fixing them on the shaft the bore of the inner ring being of special non-cylindrical shape which co-operates with a complementary shape on the shaft, e.g. teeth, polygonal sections
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors

Definitions

  • the present invention relates generally to bearing assemblies, such as found in vehicle wheel hub assemblies, for supporting rotating components, and in particular, to a method and assembly for reducing or eliminating creep or relative rotation between one or more races of the bearing assembly and the adjacent components upon which the bearing assembly is mounted.
  • bearing assemblies for supporting a rotating member axially relative to a fixed or stationary member are known. Rolling elements in these bearing assemblies are disposed between inner and outer races fitted to the members being supported, and provide rolling support between the two members.
  • One common application for bearing assemblies is in the mounting the road wheels of automotive vehicles on the suspension systems of such vehicle.
  • One arrangement relies on a dead spindle which projects from the suspension system - usually from a steering knuckle - into a hub to which a road wheel is bolted.
  • the hub rotates around the spindle on antifriction bearings that are located between the hub and the spindle.
  • the hub to which the road wheel is bolted has a live spindle which projects into a housing which in turn is bolted to a steering knuckle or other suspension system component.
  • An antifriction bearing located between the spindle and housing enables the spindle - and indeed the entire hub - to rotate relative to the housing.
  • the antifriction bearing consists of one or more rows of rolling elements TIMK D314WO - APPLICATION - FINAL
  • the present disclosure provides a bearing assembly having one or more races associated with a rotating structure with backface features which are adapted to rotationally secure the races relative to the rotating structure supported by the bearing.
  • the backface features provide a positive engagement between the one or more races and the rotating structure to reduce or eliminate creep, fretting, and relative rotation between the supported races and the associated rotating structure, such that the races rotate with the rotating structure
  • the present disclosure provides at least one inner race of a bearing assembly with an integrated backface engagement feature configured to secure the inner race relative to a corresponding rotating shaft upon which the bearing assembly is mounted, to reduce or eliminate creep, fretting, and relative rotation between the inner race and the corresponding shaft.
  • the present disclosure provides at least one outer race of a bearing assembly with an integrated backface engagement feature configured to secure the outer race relative to a corresponding rotating structure within which the bearing assembly is mounted, to reduce or eliminate creep, fretting, and relative rotation between the outer race and the corresponding enclosing and rotating structure.
  • each discrete race component incorporates at least one engagement feature within an annular region which abuts a retention element of the corresponding rotating structure upon which the races are mounted.
  • the retention element may be formed material from the rotating structure or other suitable retention means.
  • Figure 1 is a partial sectional view of an exemplary vehicle wheel hub assembly illustrating the positioning of inboard and outboard inner races of a bearing assembly relative to a rotating spindle shaft;
  • Figure 2 is an end view of an inner race backface surface in the vehicle wheel hub assembly of Fig. 1 , illustrating a plurality of engagement features.
  • Figure 3 is a perspective partial end view of a bearing race backface surface incorporating a recessed radial channel as an engagement feature; TIMK D314WO - APPLICATION - FINAL
  • Figure 4 is a perspective partial end view of a bearing race backface surface against which a separate engagement element in the form of a woven wire mesh is disposed;
  • Figure 5 is a perspective partial end view of a bearing race backface surface incorporating a dimple engagement feature
  • Figure 6 is a perspective partial end view of a bearing race incorporating an axial groove engagement feature on an inner circumferential surface.
  • bearing assemblies 40 having at least one race member 100 which is secured against a rotating component 20, such as a rotating shaft, and which is held in place by a retention element 30, such as a shoulder, formed region, or other attachment structure which applies an axially-directed force against an annular portion 102 of the race backface surface 104.
  • an exemplary vehicle wheel hub and bearing assembly 10 is shown consisting of a TIMK D314WO - APPLICATION - FINAL
  • the vehicle wheel hub and bearing assembly 10 enables a vehicle wheel and brake disk to rotate about an axis X on a steering knuckle or other component of an automotive suspension system (not shown).
  • the vehicle wheel hub and bearing assembly 10 includes a hub 24 defined by the rotating spindle 22 and bolt flange 26, to which the road wheel and brake disk are secured, a housing 28 which is mounted on the steering knuckle or other suspension component, and a bearing 40 which is located between the hub 24 and housing 28, and which enables the hub 24 to rotate within the housing 28 with minimum friction.
  • the hub 24 includes the flange 26 and rotating spindle 20 which projects from the flange 26 at a shoulder 25 located on the back face 27 of the flange.
  • the flange 26 is fitted with the lug bolts 22 which project axially from the opposite face.
  • a brake disk (not shown) fits against the flange 26 and the road wheel (not shown) fits against the disk with the lug bolts projecting though each of them.
  • lug nuts are threaded over the bolts to secure the disk and wheel to the hub.
  • the spindle 20 is upset to define a race / bearing retaining element 30, that is, the spindle 20 is deformed outwardly in the provision of a roll formed end having an abutment face that lies perpendicular to the axis X and is presented toward the flange 26.
  • the inner races 100 of the bearing 40 are captured between the shoulder 25 on the flange 26 and the roll-formed abutment face of the retaining element 30.
  • the bearing 40 includes a set of inner races 100 which may be in the form of a discrete inboard inner race 100A and a discrete outboard inner race 100B which fit around the spindle 20, there being an interference fit between each inner race 100A, 100B and the spindle.
  • the set of inner races 100 may have only a single discrete inboard inner race 100A, with the outboard inner race 100B integrally formed with the spindle 20 outer diameter surface.
  • Each discrete inner race 100A, 100B has a tapered raceway 105 that is presented outwardly away from the axis X, a thrust rib 106 at the large end of its raceway, and a back face 102, which is squared off with respect to the axis X on TIMK D314WO - APPLICATION - FINAL
  • the inboard inner race 100A abuts the small end of the outboard inner race 100B along the spindle 20, that is to say, the two inner races abut at their front faces.
  • the bearing 40 includes rolling elements 108 such as tapered rollers arranged in two rows, there being a separate row around each inner race 100A, 100B.
  • the rolling elements 108 extend around the raceways for the inner races 100A, 100B, and with tapered rollers, there being essentially a line contact between the tapered side faces of the rollers and the raceways.
  • the large end faces of the rollers bear against the thrust ribs 106, with the rollers of each row essentially on apex, which means that the envelopes in which their tapered side faces lie have their apices located at a common point along the axis.
  • Each row of rollers 108 has a cage 1 10 to maintain the proper spacing between the rolling elements 108 in that row.
  • the housing 28 surrounds the spindle 20 as well as the set of inner races 100, and the two rows of rolling elements 108.
  • the housing 28 forms part of the bearing 40 in that the housing supports the raceways 1 12A and 1 12B which are presented inwardly toward the axis. In that sense, the housing 28 constitutes a set of outer races 1 12 of the bearing 40.
  • the raceways 1 12A and 1 12B on the housing taper downwardly toward an intervening surface which separates them.
  • the rolling elements 108 likewise lie along the raceways 1 12A and 1 12B of the housing 28, and for tapered rollers, there being essentially a line contact between the raceways 1 12A and 1 12B and the tapered side faces of the rollers.
  • the raceways 1 12A and 1 12B open into short end bores in which the thrust ribs 106 of the two inner races 100 are located.
  • the discrete inner races 100 may flex or bend in relation to the outer diameter of the rotating shaft or spindle 20 with which they are associated. Over time, repeated flexing and bending motion may cause the inner races 100 to "turn”, “creep”, “fret”, TIMK D314WO - APPLICATION - FINAL
  • each backface surface 104 incorporates one or more engagement features 200, such as recessed slots 200A ( Figure 3) or depressions 200B ( Figure 5), or combinations thereof ( Figure 2) within the annular region of abutment 102.
  • the engagement features 200 such as recessed slots 200A, depressions 200B, or combinations thereof within the annular region of abutment 102 on each inner race backface surface 104 provide recessed regions or spaces into which material from the retention element 30 may flow or deform under axial pressure during the assembly process, thereby providing a positive "lock” or engagement between each discrete inner race 100 and the rotating component 20 onto which it is mounted.
  • the resulting positive "lock” or engagement resists the gradual rotational movement or creep of the inner races 100 relative to the rotating component 20, thereby reducing or eliminating the formation of associated stress risers and crack initiation points.
  • the inner race 100 be formed from a material which is harder than that of the retention element 30.
  • the present disclosure will be seen as providing method for securing an annular race 100 of a bearing 40 against rotational movement relative to an axially supported component 20.
  • the fundamental steps in the method require positioning at least one bearing race in operational association with the axially supported component 20; disposing at least one engagement feature between a surface of the bearing race and a surface of the axially supported component; and engaging the engagement feature with the surface of the axially supported component and the surface of the bearing race to positively engage the bearing race with the axially supported component, thereby providing a resistance to rotational movement of the bearing race relative to the supported component.
  • the positive engagement between the bearing race and the axially supported component may be achieved by deforming a portion of the axially supported component, such as a retention element into positive engagement with the engagement feature.
  • the engagement feature itself may be a recessed feature selected from a set of recessed features including slots, channels, grooves, dimples, knurls, or cross-hatching integrally formed in a surface of the bearing race, such as the backface surface or an axial surface, or it may be an engagement structure which is discrete from said race and the axially supported component and is entrapped there between when the race is secured to the axially supported component.
  • retention elements 30 may be utilized to secure the bearing races 100 relative to the associated rotating components or structures, and hence to interact with the engagement features 200 on the race backface surfaces 104 to secure the races 100 against rotational movement relative to their associated rotating components 20 or structures.
  • These retention elements 30 may include formed ends or portion of the associated rotating components 20 or structures, shoulders, flanges, and the like, provided that the TIMK D314WO - APPLICATION - FINAL
  • engagement features 200 may be utilized to facilitate positive engagement between the race backface surfaces 104 of either an inner race 100 or an outer race 1 12 and a retention element 30 associated with a rotating component 20 onto which the race is mounted.
  • a discrete engagement structure 300 may be interposed between the race backface surface 104 and the retention element 30 of the rotating component.
  • an engagement structure 300 in the form of a wire mesh segment is disposed against the race backface surface 104.
  • the engagement structure 300 When the retention element 30 is abuttingly engaged with the race backface surface 104, the engagement structure 300 is entrapped there between, and positively engages both the rentention element 30 and the race backface surface 104, providing a resistation to relative rotational movement.
  • the engagement structure 300 may have a variety of configurations, provided that positive engagement between the retention element 30 and the race backface surface 104 is enabled.
  • the wire mesh segment shown in Figure 4 may be replaced by a knurled or cross-hatched washer.
  • the engagement features 200 utilizes to facilitate positive engagement between the surfaces of either an inner race 100 or an outer race 1 12 and a retention element 30 associated with a rotating component 20 onto which the race is mounted are not limited to placement on the race backface surface 104.
  • an axial engagement feature 400 in the form of a channel or groove may be disposed on an axial surface of the race which is then positively engaged with an axial surface of the rotating component 20, such as a shaft outer diameter.

Landscapes

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

Abstract

L'invention porte sur un ensemble palier 40 destiné à supporter un arbre 20 pouvant tourner par rapport à un boîtier de support 28, dans lequel les bagues intérieures 100A, 100B de l'ensemble palier comprennent des formations en creux de face arrière intégrées 200 configurées pour verrouiller les bagues intérieures 100A, 100B par rapport à l'arbre rotatif 20 sur lequel elles sont montées, afin de réduire ou d'éliminer le glissement fonctionnel, le grippage et la rotation relative entre les bagues intérieures 100A, 100B et l'arbre 20. La surface de face arrière 104 de chaque bague intérieure 100A, 100B présente au moins une formation en creux 200 prévue dans une région annulaire 102 et qui bute contre une partie de retenue 25,30 de l'arbre correspondant 20 sur lequel les bagues 100A, 100B sont montées, de telle sorte que, pendant la mise en place de l'ensemble palier 40 sur l'arbre 20, une déformation de la matière de l'arbre qui est en butée contre chacune des faces arrières des bagues intérieures et qui entre dans des creux ou fentes en creux a pour effet de "verrouiller" les bagues intérieures 100A, 100B en les empêchant de tourner par rapport à l'arbre 20.
PCT/US2010/044995 2009-08-10 2010-08-10 Procédé et dispositif pour la prévention du glissement des bagues d'un palier WO2011019703A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US23257409P 2009-08-10 2009-08-10
US61/232,574 2009-08-10

Publications (1)

Publication Number Publication Date
WO2011019703A1 true WO2011019703A1 (fr) 2011-02-17

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1654596A (en) * 1924-11-17 1928-01-03 Clarence T Olson Bearing construction
US2032491A (en) * 1933-06-14 1936-03-03 Timken Roller Bearing Co Retaining ring attachment for shafts
GB1376534A (en) * 1971-03-08 1974-12-04 Skf Ind Trading & Dev Means for interconnecting two machine elements
US4835829A (en) * 1986-05-30 1989-06-06 Lohr & Bromkamp Gmbh Hub assembly
US4893960A (en) * 1986-10-24 1990-01-16 Lohr & Bromkamp Gmbh Wheel Bearing/constant velocity joint unit
WO1996022474A1 (fr) * 1995-01-20 1996-07-25 The Timken Company Configuration de roulement
DE19805210A1 (de) * 1998-02-10 1999-08-12 Schaeffler Waelzlager Ohg Spannvorrichtung zum Verbinden zweier umeinander angeordneter Bauteile
US20080193071A1 (en) * 2005-04-28 2008-08-14 Schaeffler Kg Hub for a Wheel Bearing Unit
EP2119929A1 (fr) * 2007-01-17 2009-11-18 NTN Corporation Joint homocinétique

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1654596A (en) * 1924-11-17 1928-01-03 Clarence T Olson Bearing construction
US2032491A (en) * 1933-06-14 1936-03-03 Timken Roller Bearing Co Retaining ring attachment for shafts
GB1376534A (en) * 1971-03-08 1974-12-04 Skf Ind Trading & Dev Means for interconnecting two machine elements
US4835829A (en) * 1986-05-30 1989-06-06 Lohr & Bromkamp Gmbh Hub assembly
US4893960A (en) * 1986-10-24 1990-01-16 Lohr & Bromkamp Gmbh Wheel Bearing/constant velocity joint unit
WO1996022474A1 (fr) * 1995-01-20 1996-07-25 The Timken Company Configuration de roulement
DE19805210A1 (de) * 1998-02-10 1999-08-12 Schaeffler Waelzlager Ohg Spannvorrichtung zum Verbinden zweier umeinander angeordneter Bauteile
US20080193071A1 (en) * 2005-04-28 2008-08-14 Schaeffler Kg Hub for a Wheel Bearing Unit
EP2119929A1 (fr) * 2007-01-17 2009-11-18 NTN Corporation Joint homocinétique

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