FR2607062A1 - Plastic cage for grooved ball bearing - Google Patents

Plastic cage for grooved ball bearing Download PDF

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Publication number
FR2607062A1
FR2607062A1 FR8716365A FR8716365A FR2607062A1 FR 2607062 A1 FR2607062 A1 FR 2607062A1 FR 8716365 A FR8716365 A FR 8716365A FR 8716365 A FR8716365 A FR 8716365A FR 2607062 A1 FR2607062 A1 FR 2607062A1
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FR
France
Prior art keywords
cage
casting
mold
pockets
injection
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR8716365A
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French (fr)
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FR2607062B1 (en
Inventor
Robert Stolz
Herbert Dobhan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SKF GmbH
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SKF GmbH
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Filing date
Publication date
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Publication of FR2607062A1 publication Critical patent/FR2607062A1/en
Application granted granted Critical
Publication of FR2607062B1 publication Critical patent/FR2607062B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/2628—Moulds with mould parts forming holes in or through the moulded article, e.g. for bearing cages
    • 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
    • F16C33/38—Ball cages
    • F16C33/41—Ball cages comb-shaped
    • F16C33/412—Massive or moulded comb cages, e.g. snap ball cages
    • F16C33/414—Massive or moulded comb cages, e.g. snap ball cages formed as one-piece cages, i.e. monoblock comb cages
    • F16C33/416—Massive or moulded comb cages, e.g. snap ball cages formed as one-piece cages, i.e. monoblock comb cages made from plastic, e.g. injection moulded comb cages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/04—Bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/04—Bearings
    • B29L2031/045—Bushes therefor
    • 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
    • F16C2220/00—Shaping
    • F16C2220/02—Shaping by casting
    • F16C2220/04—Shaping by casting by injection-moulding
    • 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
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Rolling Contact Bearings (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Mould tool produces the snap-fitting cage for a grooved ball bearing by casting or injection moulding plastics and moulding to be ejected. The mould for the cage pockets is in one piece and has sections forming the pockets distributed round the circumference of its centre ring; an axial space through is between each pair of such sections. The parts between the pocket-forming sections and the annular surfaces forming the face of the cage are radiused or bevelled off.

Description

Moule de coulee ou d'iniection pour la fap@ication a-une cace a encllcuetaoe oour roulements a billes riaides et cache a encilauetaae
fabriauee dans cet outil
La presente invention concerne un moule de coulee ou d'injection pour la fabrication d'une cage a encliquetage pour roulements a billes rigides ou a gorges profondes, notamment en matiére plastique. Par ailleurs, l'invention concerne une cage a encliquetage qui est fabriquée dans un tel moule.Casting or injection mold for the fap @ ication has an encllcuetaoe or riaides ball bearings and encilauetaae cover
fabriauee in this tool
The present invention relates to a casting or injection mold for the manufacture of a snap-in cage for rigid ball bearings or with deep grooves, in particular made of plastic. Furthermore, the invention relates to a snap-in cage which is produced in such a mold.

Sur des moules de coulee ou d'injection connus le moule dessine a former les poches ou alvéoles a billes est compose de trots parties de moule, å savoir un noyau, un goujon spherique et une partie extérieure. De ce fait, aux deux endroits de separation entre la partie de moule extérieure et le goujon spherique et entre le goujon spherique et le noyau, il se forme une bavure et eventuellement meme une membrane de Joint de moule. De plus sur la cage finie, des aretes vives ne peuvent pas etre évitées aux transitions entre la surface d'enveloppe ou a alesage et les surfaces des poches a billes. On known casting or injection molds, the mold designed to form the pockets or ball cells is composed of three mold parts, namely a core, a spherical stud and an external part. Therefore, at the two points of separation between the outer mold part and the spherical stud and between the spherical stud and the core, a burr is formed and possibly even a mold joint membrane. Furthermore, on the finished cage, sharp edges cannot be avoided at the transitions between the envelope or bore surface and the surfaces of the ball pockets.

L'invention a pour but de creer, au moyen d'un moule ce coulee ou d'injection realise de façon particuliere, une cage a encliquetage pour roulements a billes rigides, par exemple en matiere plastique, qui ne presente pas de bavure de separation et n'a pas tendance a former des membranes dans la zone de sa surface d'enveloppe suite a la separation du moule. The object of the invention is to create, by means of a cast or injection mold produced in a particular manner, a snap-in cage for rigid ball bearings, for example made of plastic, which does not have any separation burrs. and does not tend to form membranes in the area of its envelope surface following separation from the mold.

Conformement a l'invention, ce but est atteint par le iair que la partie de moule pour former par coulee ou injection les poches ce cage est réalisez d une seule piece et presente dans sa portion circulaire centrale plusieurs portions reparties sur sa periphérie. In accordance with the invention, this object is achieved by the air that the mold part for forming by casting or injection the pockets this cage is made in one piece and present in its central circular portion several portions distributed over its periphery.

pourvues de surfaces latérales et formant les poches ce cage. et qu'un espace vide débouchant axialement est prevu entre ceux portions, les transitions entre les portions formant les poches ce cage, et les surfaces annulaires formant les surfaces d-aesage et d'enveloppe de la cage, étant realisees avec un arroyo. ou un chanfrein. Cette realisation fait que les aretes aux transitions entre la surface d'enveloppe ou d alesage de la cage et les surfaces des poches a billes sont arrondies ou chanfreinees de maniere rationnelle.provided with lateral surfaces and forming the pockets this cage. and that an empty space opening axially is provided between those portions, the transitions between the portions forming the pockets of this cage, and the annular surfaces forming the d-bore and envelope surfaces of the cage, being produced with an arroyo. or a chamfer. This realization means that the edges at the transitions between the envelope or bore surface of the cage and the surfaces of the ball pockets are rounded or chamfered in a rational manner.

Selon d'autres caractéristiques de l'invention, les plaques de fermeture pour la partie de moule sont pourvues de saillies orientées axialement qui forment les languettes de cage dans la zone de l'ouverture des poches et des évidements axiaux sur l'autre face frontale de la cage. According to other characteristics of the invention, the closure plates for the mold part are provided with axially oriented projections which form the cage tongues in the area of the opening of the pockets and the axial recesses on the other front face. from the cage.

L'invention est décrite ci-dessous a l'aide d'exemples de réalisation en relation avec le dessin, sur lequel
la figure 1 represente une coupe selon A-A de la figure 2 de la partie de moule formant les poches de cage, conforme a l'invention,
la figure 2 represente une vue laterale de droite de la partie de moule representee dans la figure 1, cette vue etant representee en coupe dans sa moitie inférieure,
la figure 3 represente une vue laterale de gauche de la partie de moule montree dans la figure 1,
la figure 4 represente la vue de dessus de la partie de moule montree dans les figures 1 et 2, cette partie etant executee en coupe B-B' (fig.2) dans la zone de la portion spherique formant la poche de cage,
la figure 5 représente un detail Z selon la figure 4, a une échelle agrandie,
la figure 6 représente un détail X, dessine a une echelle agrandie, de la partie de moule selon la figure 2,
la figure 7 représente un détail Y agrandi de la partie de moule selon la figure 1,
la figure 8 représente une coupe selon C-C de la figure 9 d'une partie de moule modifiee formant les poches de cage, conforme a l'invention,
la figure 9 represente une vue latérale de droite de la partie de moule montree dans la figure 8, cette vue etant representee en coupe dans sa moitie lnferieure,
la figure 10 représente un détail V, dessine a une echelle agrandie, de la partie de moule selon la figure 9,
les figures li à 13 representent une electrode destinee a l'usinage, a partir du cte droit, de la partie de moule selon la figure 1, la figure il étant montree en coupe selon D-D de la figure 12,
les figures 14 à 16 representent une électrode destinee a l'usinage a partir du coté gauche, de la partie de moule selon la figure 1, la figure 14 montrant une coupe selon E-E de la figure 15,
la figure 17 represente une coupe d'un moule d'injection complet avec une piece injecte,
la figure 18 represente une portion d'une cage a encliquetage finie, dans la zone d'une poche de cage,
la figure 19 represente une portion d'une vue de dessus de la cage a encliquetage en coupe selon F-F de la figure 18.The invention is described below with the aid of exemplary embodiments in relation to the drawing, in which
FIG. 1 represents a section along AA of FIG. 2 of the mold part forming the cage pockets, in accordance with the invention,
FIG. 2 represents a right side view of the mold part represented in FIG. 1, this view being represented in section in its lower half,
FIG. 3 represents a left side view of the mold part shown in FIG. 1,
FIG. 4 represents the top view of the mold part shown in FIGS. 1 and 2, this part being executed in section BB ′ (FIG. 2) in the area of the spherical portion forming the cage pocket,
FIG. 5 represents a detail Z according to FIG. 4, on an enlarged scale,
FIG. 6 represents a detail X, draws on an enlarged scale, of the mold part according to FIG. 2,
FIG. 7 represents an enlarged detail Y of the mold part according to FIG. 1,
FIG. 8 represents a section along CC of FIG. 9 of a modified mold part forming the cage pockets, in accordance with the invention,
FIG. 9 represents a right side view of the mold part shown in FIG. 8, this view being represented in section in its lower half,
FIG. 10 represents a detail V, draws on an enlarged scale, of the mold part according to FIG. 9,
FIGS. 1 to 13 represent an electrode intended for machining, from the right side, of the mold part according to FIG. 1, the figure being shown in section according to DD of FIG. 12,
FIGS. 14 to 16 represent an electrode intended for machining from the left side of the mold part according to FIG. 1, FIG. 14 showing a section along EE of FIG. 15,
FIG. 17 represents a section of an injection mold complete with an injected part,
FIG. 18 represents a portion of a finished snap-in cage, in the area of a cage pocket,
FIG. 19 represents a portion of a top view of the snap-in cage in section along FF of FIG. 18.

Les figures 1 à 7 représentent une partie de moule 1 destinee a la fabrication d'une cage a encliquetage pour roulements a billes rigides. Cette partie de moule 1 possede plusieurs portions 3 disposees sur sa periphérie et comportant des surfaces laterales 2 spheriques, qui relient les surfaces annulaires 4, 5 formant les surfaces d'alesage et d'enveloppe de la cage, un espace vide 6 debouchant axialement étant prevu entre deux portions 3. Les surfaces laterales 2 spheriques forment les surfaces Interieures des poches de cage. Les espaces vides 6 de la partie de moule 1 sont usines par électro-erosion.Cela évite deja les arêtes vives sur la cage injectée finie, car l'intervalle diélectrique autour des surfaces a éroder fournit déjà un rayon minimal theorique de 0,03mm sans tenir compte de l'usure de l'électrode. Les figures S a lu representent une partie de moule la qui correspond essentiellement a la partie de moule 1 des figures 1 à 7. Simplement, sur la partie de moule la les surfaces laterales 2 formant les poches de cage 36 se composent d'une surface 2a cylindrique centrale et de deux surfaces 2b coniques exterieures. Figures 1 to 7 show a mold part 1 intended for the manufacture of a snap-in cage for rigid ball bearings. This mold part 1 has several portions 3 arranged on its periphery and comprising lateral spherical surfaces 2, which connect the annular surfaces 4, 5 forming the bore and envelope surfaces of the cage, an empty space 6 opening axially being provided between two portions 3. The lateral 2 spherical surfaces form the Inner surfaces of the cage pockets. The empty spaces 6 of the mold part 1 are produced by electro-erosion. This already avoids sharp edges on the finished injected cage, because the dielectric interval around the surfaces to be eroded already provides a theoretical minimum radius of 0.03 mm without take into account the wear of the electrode. Figures S a lu represent a part of the mold which essentially corresponds to the part of mold 1 of Figures 1 to 7. Simply, on the part of the mold the side surfaces 2 forming the cage pockets 36 consist of a surface 2a central cylindrical and two external conical surfaces 2b.

Les électrodes 7, 8 destinées à l'usinage des espaces vides 6 sont représentées dans les figures 11 a 16. Ces électrodes 7, 8 se composent d'un disque 9, 10 comportant des saillies 11, 12 axiales qui sont avancées en direction axiale dans la partie de moule 1 lors de l"électro-érosion. L'électrode 7 représentée dans les figures 11 à 13 est avancée du coté droit dans la partie de moule 1 et présente des surfaces sphériques 13 qui forment les surfaces spheriques 2 de la partie de moule 1 jusqu au plan I-I selon la figure 4 ou 7. The electrodes 7, 8 intended for machining the empty spaces 6 are shown in FIGS. 11 to 16. These electrodes 7, 8 consist of a disc 9, 10 comprising axial projections 11, 12 which are advanced in the axial direction in the mold part 1 during electro-erosion. The electrode 7 shown in FIGS. 11 to 13 is advanced on the right side in the mold part 1 and has spherical surfaces 13 which form the spherical surfaces 2 of the mold part 1 up to plane II according to FIG. 4 or 7.

L'électrode 8 representée dans les figures 14 à 16 comporte, sur les surfaces 14 se faisant face des saillies 12, des bossages 15 et est enfoncee dans la partie de moule 1 a partir de la face frontale gauche 16 Jusqu'à atteindre la position terminale, de sorte que les surfaces spheriques 2 sont générées sur l'autre face du pian I-I.The electrode 8 shown in Figures 14 to 16 has, on the surfaces 14 facing the projections 12, bosses 15 and is pressed into the mold part 1 from the left front face 16 Until reaching the position terminal, so that the spherical surfaces 2 are generated on the other face of yaws II.

Par deviation de l'électrode 8, on forme ensuite la contre-depoulile 17 representee dans les figures 4 et 5, par laquelle sont formees sur la cage finie, dans la zone de l'ouverture des poches, des surfaces obliques correspondantes. Tant que l'électrode 8 n'est pas deviée, elle genère sur la partie de moule 1 des surfaces paralleles qui forment, comme le montre la figure 18, des surfaces paralleles correspondantes sur la cage finie dans la zone de l'ouverture des poches 21.By deflection of the electrode 8, the counter-pulp 17 shown in FIGS. 4 and 5 is then formed, by which are formed on the finished cage, in the zone of the opening of the pockets, corresponding oblique surfaces. As long as the electrode 8 is not deflected, it generates on the mold part 1 parallel surfaces which form, as shown in FIG. 18, corresponding parallel surfaces on the finished cage in the area of the pocket opening 21.

Une déviation supplémentaire de l'électrode 7, 8 peut, en fonction du sens du déplacement, agrandir les arrondis R ou former un aplatissement. Les arrondis R sur la partie de moule 1, qui évitent les arêtes vives des poches sur la cage injectée finie, sont particuliérement bien visibles dans les figures 6 et 7. Ces arrondis
R évitent également que les arêtes entre les poches de cage et la surface d'alésage ou d'enveloppe de la cage s'effritent pendant le fonctionnement.An additional deflection of the electrode 7, 8 may, depending on the direction of movement, enlarge the rounding R or form a flattening. The rounded R on the mold part 1, which avoid the sharp edges of the pockets on the finished injected cage, are particularly well visible in Figures 6 and 7. These rounded
R also prevent the edges between the cage pockets and the bore or shell surface of the cage from crumbling during operation.

La figure 17 montre un moule d'injection complet pour une cage a encliquetage de roulement a billes rigide, ce moule étant compose ae la partie de moule : representee par les figures 1 a 7 et oes ceux plaques de fermeture le. 19. Les languettes de cage 20 elastiques (fig.18) se trouvant dans la zone de l'ouverture oes poches 2! sont formees par des saillies 22 de la plaque de fermeture 18. et les evidements 23a sur la face se trouvant a l'oppose des ouvertures des poches 2! sont formés par des saillies 23 de l autre plaque de fermeture 19.Les tiges ejectrices 24 pour la plece injecte 25, guidees dans la plaque de fermeture 18, sont prevues entre deux languettes de cage 20 d'une barrette de cage 26 et agissent sur une surface plane 27 de la cage 28. L'éjecteur central 29 pour la carotte 3û est dispose de façon deplacarle dans un alesage 31 de la plaque de fermeture 18 et un alesage 32 de la partie de moule 1.Apres l'operation d'injection, la plaque de fermeture 18 et la partie de moule 1 sont d'abord deplacees en direction axiale, la cage 28 et la carotte 3û reliee a celle-cl demeurant encore dans la partie de moule 1. Ensuite les éjecteurs 24, 29 sont deplaces en direction de la plaque de fermeture 19, ce qui separe la piece Injecte finie 25 ae la partie ae moule i.Il ressort de la figure 19 qu'aux transitions entre la surface d'enveloppe 33 ou la surface d'alesage 34 ae la cage 26 et les surfaces 35 ces poches ae cage 34. les aretes aes pocnes presentent un arrondi 21. Les portions 36a ae la cage 26 avec les pocnes oe cage 36 sont reilees par des barrettes 26 dans le sens peripherique. FIG. 17 shows a complete injection mold for a cage with a snap-on bearing for a rigid ball bearing, this mold being composed of the mold part: represented by FIGS. 1 to 7 and in those those closing plates. 19. The elastic cage tabs 20 (fig.18) located in the area of the pocket opening 2! are formed by projections 22 of the closure plate 18. and the recesses 23a on the face located opposite the openings of the pockets 2! are formed by protrusions 23 of the other closure plate 19. The ejector rods 24 for the injected material 25, guided in the closure plate 18, are provided between two cage tongues 20 of a cage strip 26 and act on a flat surface 27 of the cage 28. The central ejector 29 for the core 3û is arranged in a way in a bore 31 of the closure plate 18 and a bore 32 of the mold part 1.After the operation of injection, the closing plate 18 and the mold part 1 are first moved in the axial direction, the cage 28 and the core 3û connected to it remaining still in the mold part 1. Then the ejectors 24, 29 are displacements in the direction of the closing plate 19, which separates the finished injected part 25 from the mold part i. It appears from FIG. 19 that at the transitions between the envelope surface 33 or the bore surface 34 ae the cage 26 and the surfaces 35 these cage pockets 34. the edges with pockets present t is rounded 21. The portions 36a have the cage 26 with the poles or cage 36 are reiled by bars 26 in the peripheral direction.

Les modes de realisation qui viennent d'étre aecrits ne sont que ces exemples a un moule de coulee ou c injectif. conforme a l'invention. Des mociifications aans la construction aes differents elements sont tout a fait possibles dans le cadre de l'invention. The embodiments which have just been described are only these examples of a casting or c injective mold. according to the invention. Associations in the construction of different elements are quite possible within the framework of the invention.

Ainsi il est possible de realiser le moule ae coulee ou d'injection comme moule multiple, ce qui reduit les couts pour la faprication de la cage. Par ailleurs. Il est possible de munir les transitions entre les arrondis R et les surfaces laterales 2 spheriques des portions 8 de la partie de moule 1 d'un palacissment 37 (fug.7). Thus it is possible to make the mold for pouring or injection as a multiple mold, which reduces the costs for making the cage. Otherwise. It is possible to provide the transitions between the rounded R and the lateral spherical surfaces 2 of the portions 8 of the mold part 1 with a palacissment 37 (fug. 7).

Claims (8)

RevendicationsClaims 1. Moule de coulee ou d'injection pour la fabrication a une cage a encliquetage pour roulements a billes rigides. notamment ei matiere plastique, qui est poussee hors du moule par des éjecteurs apres le processus de coulee ou d'inection, caracterise en ce que la partie de moule < l,la) pour former par coulee ou injection les poches de cage (36) est realisee d'une seule piece et presente dans sa portion circulaire centrale plusieurs portions (3) reparties sur sa peripherie, pourvues de surfaces laterales (2) et formant les poches de cage (36), et qu'un espace vide (6) débouchant axialement est prevu entre deux portions (3), les transitions entre les portions (3) formant les poches de cage, et les surfaces annulaires (4,5) formant les surfaces d'alesage et d'enveloppe de la cage (28J.  1. Casting or injection mold for manufacturing a snap-in cage for rigid ball bearings. in particular plastic, which is pushed out of the mold by ejectors after the casting or injection process, characterized in that the mold part (l, la) for forming by casting or injection the cage pockets (36) is made in one piece and present in its central circular portion several portions (3) distributed over its periphery, provided with lateral surfaces (2) and forming the cage pockets (36), and that an empty space (6) opening axially is provided between two portions (3), the transitions between the portions (3) forming the cage pockets, and the annular surfaces (4,5) forming the bore and envelope surfaces of the cage (28J. etant realisees avec un arrondi (R) ou un chanfrein.being carried out with a rounding (R) or a chamfer. 2. Moule de coulee ou d'injection selon la revenoication caracterise en ce que les transitions entre les arrondis (R) et les surfaces laterales (2) des portions (3) sont chacune pourvues d'un aplatissement (37).  2. Casting or injection mold according to the revenoication characterized in that the transitions between the rounded (R) and the lateral surfaces (2) of the portions (3) are each provided with a flattening (37). 3. Moule de coulee ou d'injection selon la revendication i ou 2. caracterise en ce que les surfaces laterales (2) ae la partie oe moule (1). qui forment les poches de cage < 36), sont spheriques. 3. casting or injection mold according to claim i or 2. characterized in that the lateral surfaces (2) has the part of the mold (1). which form the cage pockets <36), are spherical. 4. Moule ae coulee ou å injection selon la revendication i ou 2. caracterise en ce que les surfaces laterales (2) de la partie ce moule (la), qui forment les poches de cage (36), se composent a une surface cylindrique mediane (2a) et de deux surfaces exterieures coniques (2D).  4. A mold for casting or injection according to claim i or 2. characterized in that the lateral surfaces (2) of the part of this mold (la), which form the cage pockets (36), consist of a cylindrical surface median (2a) and two conical outer surfaces (2D). 5. Moule de coulee ou d'injection selon l'une quelconque des revendications 1 a 4, caracterise en ce que les portions (3) ae la partie de moule (1,la), qui forment les poches de cage (36), sont pourvues aans la zone de leur face frontale (16) d'une contre-depouille (17). 5. casting or injection mold according to any one of claims 1 to 4, characterized in that the portions (3) ae the mold part (1, la), which form the cage pockets (36), are provided in the region of their front face (16) with an undercut (17). 6. Moule de coulee ou d'injection selon l'une quelconque des revendications 1 a 5, caracterise en ce qu'il comprend une plaque cie fermeture (18) presentant aes sa:liles (22), csrigees axiaiement. 6. casting or injection mold according to any one of claims 1 to 5, characterized in that it comprises a closing plate (18) having aes sa: liles (22), axially csrigees. pour former des languettes ae cage (20) eiastiques.to form tongues with a flexible cage (20). 7. Moule de coulee ou d'injection selon l'une quelconque des revendications 1 à 6. caracterise en ce que l'autre plaque ce fermeture (19) possede des saillies (23) pour former ces evidements (23a) s'étendant axialement sur la face de la cage (28) qui est a l'oppose de l'ouverture des poches (21).  7. casting or injection mold according to any one of claims 1 to 6. characterized in that the other plate this closure (19) has projections (23) to form these recesses (23a) extending axially on the face of the cage (28) which is opposite the opening of the pockets (21). 8. Cage a encliquetage pour roulements a billes rigides. 8. Snap-in cage for rigid ball bearings. notamment en matiere plastique. cette cage etant faoriquee dans un moule de coulee ou d inJection conforme a l;une quelconque ces revendications 1 a 7, caracterise en ce que les arétes ces pocnes presentent, aux transitions entre la surface d'enveloppe ou ae la surface d'alesage de la cage (28) et les surfaces (35) ae ia poche de bille (36), un arrondi (R1) ou un chanfrein. especially in plastic. this cage being made in a casting or injection mold according to any one of claims 1 to 7, characterized in that the edges of these poles have, at the transitions between the envelope surface or the bore surface of the cage (28) and the surfaces (35) ae ia ball pocket (36), a rounding (R1) or a chamfer.
FR8716365A 1986-11-26 1987-11-25 CASTING OR INJECTION MOLD FOR THE MANUFACTURE OF A LOCKING CAGE FOR RIGID BALL BEARINGS AND A LOCKING CAGE MADE IN THIS TOOL Expired - Lifetime FR2607062B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863640391 DE3640391A1 (en) 1986-11-26 1986-11-26 Casting mould or injection mould for producing a snap cage for deep-groove ballbearings and snap cage produced in said mould

Publications (2)

Publication Number Publication Date
FR2607062A1 true FR2607062A1 (en) 1988-05-27
FR2607062B1 FR2607062B1 (en) 1991-01-11

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FR8716365A Expired - Lifetime FR2607062B1 (en) 1986-11-26 1987-11-25 CASTING OR INJECTION MOLD FOR THE MANUFACTURE OF A LOCKING CAGE FOR RIGID BALL BEARINGS AND A LOCKING CAGE MADE IN THIS TOOL

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JP (1) JPS63172617A (en)
DE (1) DE3640391A1 (en)
FR (1) FR2607062B1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09303402A (en) * 1996-05-20 1997-11-25 Nippon Seiko Kk Retainer for ball bearing
DE102005028756A1 (en) * 2005-06-22 2007-01-04 Texparts Gmbh Snap-fit cage for ball bearings comprises ring of pockets and base ring, pockets being undercut on base ring side, forming bars which connect them on their inner side
JP5012499B2 (en) * 2007-12-27 2012-08-29 日本精工株式会社 Deep groove ball bearing
JP5012498B2 (en) * 2007-12-27 2012-08-29 日本精工株式会社 Deep groove ball bearing
CN102119281B (en) 2008-12-10 2014-02-26 日本精工株式会社 Ball bearing, and transmission for hybrid vehicle
JP5348271B2 (en) * 2012-03-22 2013-11-20 日本精工株式会社 Ball bearing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3469894A (en) * 1967-10-12 1969-09-30 Superior Die Set Corp Die set leader pin with sectional bearing cage
FR2348043A1 (en) * 1976-04-12 1977-11-10 Schaeffler Ohg Industriewerk Ejectors for moulded plastic ball race cases - act at ball pockets, instead of on connecting bars, so that balls can be closer packed

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3469894A (en) * 1967-10-12 1969-09-30 Superior Die Set Corp Die set leader pin with sectional bearing cage
FR2348043A1 (en) * 1976-04-12 1977-11-10 Schaeffler Ohg Industriewerk Ejectors for moulded plastic ball race cases - act at ball pockets, instead of on connecting bars, so that balls can be closer packed

Also Published As

Publication number Publication date
JPS63172617A (en) 1988-07-16
FR2607062B1 (en) 1991-01-11
DE3640391A1 (en) 1988-06-01

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