CH356644A - Temporary needle retention sleeve in the outer ring of a needle bearing - Google Patents

Temporary needle retention sleeve in the outer ring of a needle bearing

Info

Publication number
CH356644A
CH356644A CH356644DA CH356644A CH 356644 A CH356644 A CH 356644A CH 356644D A CH356644D A CH 356644DA CH 356644 A CH356644 A CH 356644A
Authority
CH
Switzerland
Prior art keywords
needle
bearing
outer ring
sleeve
cup
Prior art date
Application number
Other languages
French (fr)
Inventor
Pitner Alfred
Original Assignee
Pitner Alfred
Roulements A Aiguilles Sa D
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 Pitner Alfred, Roulements A Aiguilles Sa D filed Critical Pitner Alfred
Publication of CH356644A publication Critical patent/CH356644A/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C21/00Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement
    • F16C21/005Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement the external zone of a bearing with rolling members, e.g. needles, being cup-shaped, with or without a separate thrust-bearing disc or ring, e.g. for universal joints
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/44Needle bearings
    • F16C19/46Needle bearings with one row or needles
    • F16C19/466Needle bearings with one row or needles comprising needle rollers and an outer ring, i.e. subunit without inner ring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/04Preventing damage to bearings during storage or transport thereof or when otherwise out of use
    • F16C41/045Devices for provisionally retaining needles or rollers in a bearing race before mounting of the bearing on a shaft
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2300/00Application independent of particular apparatuses
    • F16C2300/02General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned

Landscapes

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

Description

  

  Douille de retenue provisoire des aiguilles  dans la bague extérieure d'un roulement<B>à</B> 'aiguilles    L'invention a pour objet une     d'ouille    de retenue  provisoire des, aiguilles, utilisable soit dans la     manu-          ten,tion    des: roulements<B>à</B> aiguilles dépourvus, de  bague intérieure et ne comportant pas de moyens  pour retenir les aiguilles en place, soit au cours de  la fabrication de roulements pourvus     d'él6men#ts.    per  manents (bague intérieure, anneaux de, retenue ter  minaux, sertissage,     etc.)    maintenant les aiguilles en  place, pendant les opérations qui précédent la mise  en place de ces éléments permanents.  



  Dans la fabrication<B>de</B> roulements<B>à</B> aiguilles de  ce genre, les aiguilles sont souvent mises en place  dans la bague extérieure du roulement par le fabri  cant et maintenues en place<B>à</B> l'aide, dune graisse  consistante. Toutefois, dans la fabrication en grande  série sur chaîne de fabrication où les pièces     sùbis#     sent des chocs lors du passage     d7une    machine<B>à</B> une  autre ou dans le stockage ou     le    transport<B>de</B>     roule-          nients.    dépourvus de moyens permanents de retenue,  on est amené<B>à</B> utiliser, pour la retenue provisoire  des aiguilles, des organes tubulaires d'un faible prix  de revient,

   qui complètent l'action de retenue par la  graisse et remédient<B>à</B> la perte de pouvoir adhésif  de celle-ci<B>à</B> certaines températures, ces organes  tubulaires pouvant consister en de simples tubes de  carton, que l'on enlève au moment du montage final,  soit en usine, soit chez     rusager.     



  L'extraction de ces organes tubulaires, soit<B>à</B> la  main, soit<B>à</B> l'aide d'outils extracteurs, devrait s'exé  cuter par le     glisse-ment    axial de cet organe le long  de la couronne d'aiguilles, sans effort radial suscep  tible     d'entrainer    une ou plusieurs aiguilles hors de  leur logement et sans risque<B>de</B> coincement. On con-         çoit    que si l'effort d'extraction possède une     co.mpo-          sante    radiale, augmentant la pression du tube de  carton sur certaines aiguilles, celles-ci risquent      & être     entraînées<B>à</B> l'extraction du tube, ou bien il risque de  se produire des coincements.  



  L'invention a pour but de réaliser une douille  de retenue provisoire, conçue de façon<B>à</B> supprimer  pratiquement ce risque.  



  Dans ce but et suivant     Pinvention,    la douille de  retenue provisoire comporte une saillie interne des  tinée<B>à</B> permettre son accrochage et son extraction  axiale.  



  Une telle douille provisoire peut être réalisée de  façon très économique -en métal estampé, ou<B>à</B>     Faide          d%ne    matière plastique moulée, ou au moyen d'un  aggloméré quelconque moulé, par exemple, compor  tant une nervure interne  Lorsque le roulement<B>à</B> aiguilles ne comporte  intérieurement aucune saillie susceptible de limiter  l'enfoncement de la douille de retenue provisoire,  celle-ci peut avantageusement comporter une colle  rette extérieure destinée<B>à</B> venir buter, en fin     d7en-          foncement,    contre la bague -extérieure.  



  Lorsque le roulement<B>à</B> aiguilles comporte une  bague extérieure en forme de cuvette fermée,     co-m-          me    c'est le cas dans certains montages et<U>notamment</U>  lorsqu'il s'agit<B>de</B> monter le roulement dans une  articulation, il est avantageux de constituer la douille  de retenue provisoire elle-même sous la forme d'une  cuvette fermée, dont le fond plein, coopérant avec  le fond obturé de la cuvette du roulement, joue le  rôle d'un piston destiné,<B>à</B> fin de course     d#enfonce,     ment,<B>à</B> refouler de la graisse disposée au fond de la  cuvette du roulement vers la couronne, d'aiguilles.

        Le dessin annexé représente,<B>à</B> titre d'exemple,  trois formes     d7exécution    de la douille faisant l'objet  de l'invention.  



  La     fig.   <B>1</B> est une coupe axiale de la première  forme, mise     en    place dans un roulement<B>à</B> bague  extérieure cylindrique<B>;</B>  la     fig.    2 est une coupe analogue     d7une    douille  en forme de, cuvette, mise en place dans un roule  ment dont la bague extérieure est également en for  me de cuvette;  la     fig.   <B>3</B> est une vue analogue<B>à</B> la     fig.    2, mon  trant une variante.  



  En se référant au dessin,<B>1</B> désigne la douille  de retenue provisoire enfoncée dans la couronne  d'aiguilles<B>A</B> tapissant la paroi interne de la bague  extérieure B du roulement. La     douillé,   <B>1</B> comporte  au moins une saillie intérieure d'accrochage, pour  l'extraction<B>de</B> la douille, cette saillie étant, par  exemple, une nervure circulaire 2. Pour limiter l'en  foncement, la douille<B>1</B> peut comporter une, collerette  extérieure<B>3</B> destinée<B>à</B> buter, en fin de course d'en  foncement, contre la bague extérieure B. Cette colle  rette possède l'avantage d'augmenter la rigidité de  la douille<B>1,</B> qui peut être réalisée sous une épais  seur très faible.

   Dans le même but, la douille<B>1</B> peut  comporter     une    collerette intérieure 4 qui pourrait,  d'ailleurs, remplacer la nervure 2 et constituer     -elle-          même    la saillie d'accrochage susvisée. On notera que  la collerette<B>3</B> ne doit pas être utilisée pour l'extrac  tion de la douille, car l'expérience montre que l'on  retomberait alors dans les inconvénients que     l'inven,          tion    se propose     d?éviter.     



  Dans l'exemple de la     fig.    2, la douille<B>1,</B> munie       d7une    nervure interne d'accrochage 2, possède un  fond<B>5</B> et elle s'engage dans la couronne d'aiguilles  <B>A,</B> tapissant la paroi interne d'une bague extérieure       C,    en forme de cuvette fermée en<B>D.</B> Dans la posi  tion d'enfoncement maximum, représentée<B>à</B> la     fig.     2, le fond<B>5 de</B> la douille vient presque au contact  du fond<B>D</B> de la cuvette du roulement, de sorte que  la graisse, déposée contre le fond<B>D,</B> est refoulée par  la douille<B>1</B> jouant     le    rôle de piston distributeur,  dans la couronne d'aiguilles<B>A,

  </B> l'enfoncement maxi  mal de la douille étant limité par la butée de son  fond<B>5</B> sur une saillie<B>d</B> du fond<B>D. Il</B> convient, en  effet,<B> & </B> éviter en général le contact intime avec inter  position     d1n    film continu de graisse, car l'ensemble  formerait une ventouse qui gênerait l'opération  d'extraction.    Les aiguilles peuvent, avant mise en place de la  douille<B>1</B> de la     fig.    2, être maintenues provisoirement  <B>à</B>     Paide    d'un peu de graisse, ou bien elles peuvent  être réparties<B>à</B> l'aide d'un distributeur entre la  douille<B>1</B> et lia bague<B>C,</B> les parties<B>d</B> servant<B>à</B> leur  centrage mutuel.  



  La saillie 2 doit se trouver, de préférence, vers  le fond de la cuvette de la     fig.    2 ou vers     Pextrémité     opposée<B>à</B> celle      & introduction    de la douille     (fig.   <B>1),</B>  car l'expérience a montré que, de cette façon, l'ex  traction axiale se fait avec le, minimum de risque,  d'extraire en même temps des aiguilles ou<B>de</B> voir la  douille<B>de</B> retenue se coincer dans la couronne d'ai  guilles.  



  La douille<B>de</B> retenue de la     fig.    2 a aussi pour  fonction d'empêcher<B>le</B> dépôt de corps étrangers au  fond de la cuvette     CD.    Si de tels corps étrangers  pénètrent dans la cuvette<B>5,</B> ils sont extraits en  même temps que la douille de retenue<B>1.</B> Enfin,<B>le</B>  fond<B>5</B> donne<B>à</B> la douille<B>1,</B> même si elle est très  mince, une rigidité suffisante.  



  Dans la variante de la     fig.   <B>3,</B> la douille<B>1</B> com  porte<B>à</B> la fois un fond<B>5</B> et une collerette extérieure  <B>3</B> complétant la protection contre les poussières.



  Provisional needle retaining sleeve in the outer ring of a needle bearing <B> </B> The invention relates to a provisional needle retaining sleeve, usable either in handling des: <B> needle </B> bearings without an inner ring and not comprising means for retaining the needles in place, or during the manufacture of bearings provided with elements. permanent (inner ring, rings, terminal retainer, crimping, etc.) holding the needles in place, during the operations preceding the installation of these permanent elements.



  In the manufacture of <B> </B> needle bearings of this kind, the needles are often placed in the outer race of the bearing by the manufacturer and held in place <B> to </B> using a consistent fat. However, in mass production on a production line where the subject parts # feel shocks when passing from one machine <B> to </B> another or in the storage or transport <B> of </B> rollers. deprived of permanent retaining means, it is necessary to <B> </B> use, for the temporary retention of the needles, low-cost tubular members,

   which complete the retaining action by the grease and remedy <B> to </B> the loss of adhesive power of the latter <B> at </B> certain temperatures, these tubular members being able to consist of simple tubes of cardboard, which is removed at the time of final assembly, either in the factory or at rusager.



  The extraction of these tubular members, either <B> by </B> by hand or <B> by </B> using extractor tools, should be carried out by the axial sliding of this member along the needle crown, without radial force liable to drive one or more needles out of their housing and without risk of <B> of </B> jamming. It is conceived that if the extraction force has a radial force, increasing the pressure of the cardboard tube on certain needles, they risk & to be entrained <B> during </B> extraction. tube or there is a risk of jamming.



  The object of the invention is to provide a provisional retaining sleeve, designed in such a way <B> to </B> practically eliminate this risk.



  For this purpose and according to the invention, the provisional retaining sleeve comprises an internal projection of the tines <B> to </B> allowing its attachment and its axial extraction.



  Such a provisional socket can be made very economically - from stamped metal, or from molded plastic, or from any molded chipboard, for example, comprising a rib. internal When the <B> needle </B> bearing does not have any internal projection likely to limit the sinking of the provisional retaining sleeve, the latter can advantageously include an external glue intended <B> for </B> come up against the outer ring at the end of the drive.



  When the <B> needle </B> bearing has an outer ring in the form of a closed cup, as is the case in certain assemblies and <U> in particular </U> when it comes to <B> to </B> mount the bearing in a joint, it is advantageous to constitute the provisional retaining sleeve itself in the form of a closed bowl, the solid bottom of which cooperates with the sealed bottom of the bowl of the bearing, plays the role of a piston intended, <B> to </B> push-in limit switch, <B> to </B> to force the grease placed at the bottom of the bearing cup towards the crown, hands.

        The appended drawing represents, <B> by </B> by way of example, three embodiments of the socket forming the subject of the invention.



  Fig. <B> 1 </B> is an axial section of the first form, placed in a bearing <B> with </B> cylindrical outer ring <B>; </B> in fig. 2 is a similar section through a cup-shaped bushing fitted into a bearing, the outer ring of which is also in the form of a cup; fig. <B> 3 </B> is a view similar to <B> to </B> FIG. 2, my variant.



  Referring to the drawing, <B> 1 </B> denotes the provisional retaining sleeve embedded in the needle ring <B> A </B> lining the inner wall of the outer ring B of the bearing. The bush, <B> 1 </B> comprises at least one interior hooking projection, for the extraction <B> of </B> the bush, this projection being, for example, a circular rib 2. To limit when sinking, the socket <B> 1 </B> may include an outer collar <B> 3 </B> intended <B> to </B> abut, at the end of the sinking stroke, against the outer ring B. This glue has the advantage of increasing the rigidity of the sleeve <B> 1, </B> which can be produced under a very low thickness.

   For the same purpose, the sleeve <B> 1 </B> may include an inner flange 4 which could, moreover, replace the rib 2 and itself constitute the aforementioned hooking projection. It will be noted that the collar <B> 3 </B> must not be used for the extraction of the sleeve, because experience shows that one would then fall back into the disadvantages which the invention proposes to have. ?to avoid.



  In the example of FIG. 2, the sleeve <B> 1, </B> provided with an internal hooking rib 2, has a bottom <B> 5 </B> and it engages in the crown of needles <B> A, < / B> lining the internal wall with an outer ring C, in the form of a closed bowl at <B> D. </B> In the maximum depression position, shown <B> to </B> in fig. 2, the bottom <B> 5 of </B> the sleeve almost comes into contact with the bottom <B> D </B> of the bearing cup, so that the grease, deposited against the bottom <B> D, </B> is driven back by the sleeve <B> 1 </B> playing the role of distributor piston, in the needle ring <B> A,

  </B> the maximum badly sinking of the sleeve being limited by the stop of its bottom <B> 5 </B> on a projection <B> d </B> of the bottom <B> D. It </B> should, in fact, <B> & </B> in general avoid intimate contact with the interposition of a continuous film of grease, because the assembly would form a suction cup which would hamper the extraction operation. The needles can, before fitting the sleeve <B> 1 </B> of fig. 2, be held temporarily <B> at </B> with a little grease, or they can be distributed <B> at </B> using a distributor between the socket <B> 1 < / B> and the ring <B> C, </B> the parts <B> d </B> serving <B> for </B> their mutual centering.



  The projection 2 should preferably be towards the bottom of the bowl of FIG. 2 or towards the end opposite <B> to </B> that & insertion of the sleeve (fig. <B> 1), </B> because experience has shown that, in this way, the axial extraction is done with the minimum risk of extracting the needles at the same time or <B> of </B> seeing the <B> de </B> sleeve retained get stuck in the needle ring.



  The socket <B> of </B> retained in fig. 2 also has the function of preventing <B> the </B> deposit of foreign bodies at the bottom of the CD bowl. If such foreign bodies enter the cuvette <B> 5, </B> they are extracted at the same time as the retaining sleeve <B> 1. </B> Finally, <B> the </B> bottom < B> 5 </B> gives <B> to </B> the socket <B> 1, </B> even if it is very thin, sufficient rigidity.



  In the variant of FIG. <B> 3, </B> the socket <B> 1 </B> com carries <B> to </B> both a bottom <B> 5 </B> and an outer collar <B> 3 < / B> supplementing the protection against dust.

 

Claims (1)

<B>REVENDICATION</B> Douille de retenue provisoire des aiguilles dans la bague extérieure d'un roulement<B>à</B> aiguilles, carac térisée en ce quelle comporte une saillii e interne destinée<B>à</B> permettre son accrochage et son extrac tion axiale. SOUS-REVENDICATIONS <B>1.</B> Douille de retenue suivant la revendication, caractérisée en ce qu'elle comporte une collerette extérieure destinée<B>à</B> venir buter, en fin d7enfonce- ment, contre la bague extérieure. 2. <B> CLAIM </B> Sleeve for provisional retaining of needles in the outer ring of a <B> needle </B> bearing, characterized in that it has an internal projection intended for <B> </ B > allow its attachment and axial extraction. SUB-CLAIMS <B> 1. </B> Retaining sleeve according to claim, characterized in that it comprises an outer flange intended <B> to </B> come into abutment, at the end of depression, against the ring exterior. 2. Douille de retenue suivant la revendication, pour un roulement<B>à</B> aiguilles comportant une bague extérieure en forme<B>de</B> cuvette fermée, caractérisée -en ce que la douille de retenue est en forme de cuvette fermée, dont le fond plein, coopérant avec le fond obturé de la cuvette du roulement, joue le rôle d'un piston destiné,<B>à</B> fin de course d'enfonce ment,<B>à</B> refouler<B>dé</B> la graisse disposée au fond de la cuvette<B>d'a</B> roulement vers la couronne & aiguilles. <B>3.</B> Douille de retenue suivant la revendication, caractérisée en ce que la saillie d'accrochage est disposée vers l'extrémité de la douille qui s'engage la première dans la couronne & aiguilles. Retaining sleeve according to claim, for a <B> needle </B> bearing having an outer ring in the form of a closed cup, characterized in that the retaining sleeve is in the form of a cup closed, whose solid bottom, cooperating with the sealed bottom of the bearing cup, acts as a piston intended, <B> to </B> push-in limit switch, <B> to </ B > push back <B> dice </B> the grease placed at the bottom of the <B> a </B> bearing bowl towards the crown & hands. <B> 3. </B> Retaining sleeve according to claim, characterized in that the hooking projection is disposed towards the end of the sleeve which first engages in the crown & hands.
CH356644D 1959-03-24 1959-07-22 Temporary needle retention sleeve in the outer ring of a needle bearing CH356644A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR356644X 1959-03-24

Publications (1)

Publication Number Publication Date
CH356644A true CH356644A (en) 1961-08-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
CH356644D CH356644A (en) 1959-03-24 1959-07-22 Temporary needle retention sleeve in the outer ring of a needle bearing

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CH (1) CH356644A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999045284A1 (en) * 1998-03-04 1999-09-10 INA Wälzlager Schaeffler oHG Needle bearing
DE102005027486A1 (en) * 2005-06-15 2006-12-28 Schaeffler Kg Rotationally symmetric assembly e.g. needle bearing, for e.g. slide bearing, has retaining lug formed at circumferential position of assembly so that non-interrupted material connection is realized between retaining lug and assembly
DE102016223815B3 (en) 2016-11-30 2018-04-19 Schaeffler Technologies AG & Co. KG Bearing ring, and using the same formed bearing assembly

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999045284A1 (en) * 1998-03-04 1999-09-10 INA Wälzlager Schaeffler oHG Needle bearing
US6478470B1 (en) 1998-03-04 2002-11-12 INA Wälzlager Schaeffler oHG Needle bearing
DE102005027486A1 (en) * 2005-06-15 2006-12-28 Schaeffler Kg Rotationally symmetric assembly e.g. needle bearing, for e.g. slide bearing, has retaining lug formed at circumferential position of assembly so that non-interrupted material connection is realized between retaining lug and assembly
DE102005027486B4 (en) * 2005-06-15 2012-04-19 Schaeffler Technologies Gmbh & Co. Kg Radial needle bearing, in particular needle sleeve
DE102016223815B3 (en) 2016-11-30 2018-04-19 Schaeffler Technologies AG & Co. KG Bearing ring, and using the same formed bearing assembly

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