WO2011018490A1 - Segment de cage pour une cage en plastique de palier à roulement et palier à roulement pourvu d'un tel segment - Google Patents

Segment de cage pour une cage en plastique de palier à roulement et palier à roulement pourvu d'un tel segment Download PDF

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Publication number
WO2011018490A1
WO2011018490A1 PCT/EP2010/061727 EP2010061727W WO2011018490A1 WO 2011018490 A1 WO2011018490 A1 WO 2011018490A1 EP 2010061727 W EP2010061727 W EP 2010061727W WO 2011018490 A1 WO2011018490 A1 WO 2011018490A1
Authority
WO
WIPO (PCT)
Prior art keywords
cage
rolling
webs
bearing
segments
Prior art date
Application number
PCT/EP2010/061727
Other languages
German (de)
English (en)
Inventor
Rudolf Zeidlhack
Original Assignee
Schaeffler Technologies Gmbh & Co. Kg
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 Schaeffler Technologies Gmbh & Co. Kg filed Critical Schaeffler Technologies Gmbh & Co. Kg
Publication of WO2011018490A1 publication Critical patent/WO2011018490A1/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
    • 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
    • F16C33/3812—Ball cages formed of interconnected segments, e.g. chains
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/50—Cages for rollers or needles formed of interconnected members, e.g. chains
    • F16C33/502—Cages for rollers or needles formed of interconnected members, e.g. chains formed of arcuate segments retaining one or more rollers or needles
    • 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
    • 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
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • F16C43/06—Placing rolling bodies in cages or bearings
    • 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
    • F16C2226/70—Positive connections with complementary interlocking parts
    • F16C2226/74—Positive connections with complementary interlocking parts with snap-fit, e.g. by clips
    • 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
    • F16C2300/10—Application independent of particular apparatuses related to size
    • F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm

Definitions

  • the invention relates to a cage segment for a plastic cage according to the preamble of claim 1.
  • Generic cage segments comprise two concentric circumferential webs and connecting webs arranged therebetween. In each case between two connecting webs and the peripheral webs a pocket for receiving a rolling element is formed.
  • the inventions fertil particularly relates to a retainer segment for radial, axial and angular contact ball bearings, which are to be operable at operating temperatures up to 150 0 C and have a pitch circle diameter greater than 500 mm.
  • the invention also relates to a rolling bearing with a composite of segments plastic cage.
  • plastic cage segments are known from the prior art for some time and appreciated especially because of their low weight and cost-effective production.
  • DE 102 46 825 A1 describes a plastic cage, which consists of several segments.
  • the cage described is particularly suitable for use in very large bearings with relatively small roles.
  • the cage segments lie loosely against one another on their outwardly directed concave end faces.
  • the dimensioning of the segments is to be selected so that in a gap-free juxtaposition of the segments between the adjacent end faces of the first and the last segment, a gap remains to accommodate a swelling and / or temperature-induced expansion of the segments.
  • the potential gap between see the cage segments has the disadvantage that during operation in and between the cage segments higher forces occur, which can lead to a plastic deformation or cracking of the cage segments. Increased bearing friction, noise, temperatures and thus a shortened bearing life are the result.
  • plastic cage segments for large rolling bearings which carry coupling elements on the end faces in order to achieve a play-related connection of the segments to the cage. Due to the even distribution of the play between the cage segments, mechanical stresses can be avoided.
  • the described cage segments are designed for tapered roller bearings.
  • the object of the invention is to provide a cage segment for a plastic cage, in particular for a radial or axial deep groove ball bearing or an angular contact ball bearing (single or multi-row), whereby particular importance is attached to a simple assembly in a self-retaining bearings , Furthermore, an improved guidance of the cage in the rolling bearing is to be achieved.
  • Another object is to provide a radial, axial or angular contact ball bearing with a plastic cage formed from segments ready. The object is achieved by a cage segment having the features of claim 1 and by a rolling bearing having the features of claim 6.
  • a cage segment according to the invention initially comprises in a known manner two outer webs, which are interconnected by connecting webs.
  • the outer webs are offset axially.
  • Several segments can be connected to form a cage.
  • the segments on their end faces coupling elements, which are each connected to the coupling element of the next segment.
  • a first coupling element are provided on a first end side and a second coupling element is provided on a second end side, which are in each case formed complementary to one another and can be connected to one another in a form-fitting manner. This makes a simple connection to a cage (ring) possible.
  • each cage pockets are formed for receiving a respective rolling element.
  • connection points are provided with a transition fit in the direction of a slight press fit.
  • a swelling or temperature expansion of the cage formed by a plurality of segments can be accommodated in the coupling elements without mechanical stresses occurring.
  • the fit has a size that corresponds to a swelling or thermal expansion of the cage material within a predetermined tolerance range.
  • one or more pockets may be formed.
  • the guidance of the cage formed from the segments takes place via the flange surfaces of the bearing and / or via the rolling bodies.
  • the contact of the rolling elements in the cage pocket is geometrically to be solved so that the rolling elements (eg the ball) touches the cage pocket to the right and left of its largest diameter. Half the ball diameter should run freely in the middle. As a result, there is no stripping of the lubricant.
  • the advantages of the invention are to be seen in particular in that the assembly of the ball bearing with a plastic cage is easily possible. To do this, the balls in radial ball bearings are inserted via a filling hole between the two bearing rings and latched into the already inserted cage.
  • the rolling elements with the cage segments When used with axial ball bearings, the rolling elements with the cage segments are inserted into the raceway of one bearing ring (horizontal bearing raceway, top raceway). Subsequently, the second bearing ring is placed with the track down on the rolling elements. The warehouse is now complete.
  • the segment is preferably held and guided in its position by means of guide knobs or webs both outwardly and inwardly toward the board diameters.
  • the guide webs are formed in runner shape in order to improve the friction and the sliding on the board surfaces.
  • a roller bearing according to the invention in particular a radial deep groove ball bearing, comprises an inner ring, an outer ring and rolling elements arranged in a cage between them, wherein the cage is composed of the previously detected segments.
  • the outer ring has at least one filling hole over which the balls are filled into the bearing and snapped into the already mounted cage.
  • the filling hole is provided in the bearing ring, which receives point load. During bearing assembly, this bearing ring is then installed and secured against rotation so that the filling hole is always in the load-free zone and remains.
  • shaft washer and housing washer are available accordingly.
  • the flange surfaces on the outer ring or on the outer disk or housing disk can be ground to improve the sliding properties.
  • the person skilled in the art knows the variants of the geometric design of such cages, therefore details of these are not described in detail. went.
  • the outer webs are tuned in height so that there is still a sufficiently large free space through which a lubricant can be fed into the camp interior.
  • the wall thicknesses are designed such that the rolling elements, especially the ball, only touch the cage in a small diameter range and the segment is only touched and guided by the balls in this area. As a result, the wiping of the lubricant is largely prevented.
  • the guidance of the segments can also take place via the raceways of the rolling elements.
  • the cage segments according to the invention can of course also be used for two- or multi-row bearings with a corresponding modification.
  • FIGS. 1 shows a schematic representation of a radial deep groove ball bearing with a rolling body guided, made of segments plastic cage according to the invention
  • FIG. 2 shows a schematic representation of a radial deep groove ball bearing with a board-guided plastic cage according to the invention, formed from segments;
  • FIG. 3 shows a schematic representation of an axial deep groove ball bearing with a rolling body guided, made of segments plastic cage according to the invention
  • 4 shows a schematic representation of an axial deep groove ball bearing with a board-guided plastic cage according to the invention, formed from segments;
  • Fig. 5 four variants of radial coupling elements in spatial representations.
  • Fig. 1 shows a schematic representation of a detailed view of a radial deep groove ball bearing with a rolling body guided plastic cage.
  • the bearing comprises in known manner an outer ring 01 and an inner ring 02, which are arranged concentrically to a bearing bore 03.
  • Several balls 04 are arranged and held as rolling elements between the outer ring 01 and inner ring 02 in a raceway 06.
  • the camp is self-holding.
  • the balls 04 are held by a plastic cage, which is composed of several cage segments 07, at a distance.
  • the cage segment 07 comprises radial coupling elements 08, with which a plurality of cage segments can be connected to form a cage.
  • the radial coupling elements 08 are designed in a basically known manner and will be explained in more detail below.
  • the leadership of the cage is done by the balls 04 via guide elements, not shown.
  • the bearing has on its outer ring 01 on a filling hole 09 through which the balls 04 are filled during assembly of the bearing.
  • the balls are inserted through the filling hole 09 in each case a cage pocket and locked there.
  • Fig. 2 also shows a schematic representation of a radial grooved ball bearing with a board-guided plastic cage.
  • the warehouse has basically In addition, the same known structure, therefore, the same components carry the same reference numerals, as in Fig. 1st
  • the guide of the cage takes place in this embodiment on board surfaces 10 of the inner ring 02 and the outer ring 01.
  • guide webs 11 are formed to guide the cage on the board surfaces 10.
  • the guide webs 11 are formed skid-shaped to minimize frictional forces.
  • the ball has more play in the cage pocket.
  • FIG. 3 and 4 show embodiments of the invention for axial deep groove ball bearings, each comprising a wave washer 12 and a housing plate 13 in a parallel arrangement in each case instead of the outer and inner ring.
  • the bearing bore 03 is known to be arranged so that shaft washer 12 and housing plate 13 are offset in the axial direction.
  • the cage segments 07 have the same structure as in the variants described above.
  • FIG. 3 shows a rolling body-guided cage analogous to FIG. 1, while FIG. 4 shows an on-board cage analogous to FIG. 2.
  • FIG. 5 different possibilities of radial coupling elements are shown.
  • the figures each show a cage segment with outer webs 17, which are interconnected by connecting webs 18. Between the connecting webs 18 pockets 19 are formed for receiving a respective rolling element.
  • coupling webs 22 are provided in extension of the outer webs (Fig. A).
  • the outer webs 17 have coupling recesses 23, into which the corresponding coupling webs 22 of a further, identically constructed cage segment can engage.
  • Locking projections 24 are provided which engage in recesses 26 of the coupling recess 23 during assembly. The breakdown into such segments facilitates the production especially for large bearing diameters.
  • Fig. B) shows that the coupling webs 22 have the locking recesses 26, in which locking projections 24 of the next cage segment can engage.
  • the latching projections 24 protrude in the longitudinal direction of the cage segment in each case to the outside.
  • the latching projection 24 within the latching recess 26 has a play s in the circumferential direction of the cage segment in order to accommodate expansions.
  • Fig. C) shows an asymmetrical design of the radial coupling elements. At each of the end faces 21, a coupling web 22 and a coupling recess 23 are provided in each case.
  • the coupling webs 22 carry the latching projections 24, while the recesses 26 are provided on the coupling recesses 23.
  • a dovetail-like radial coupling point is shown, in which on the coupling webs 22 dovetail-shaped locking recesses 26 are formed, while at the coupling recesses 23 complementary shaped locking projections 24 are provided.

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

Abstract

Segment de cage pour une cage en plastique de palier à roulement, et palier à roulement comportant une cage en plastique composée de segments. Un tel segment de cage comporte au moins deux barres externes (17) et au moins deux arcades de liaison (18) reliant entre elles les barres externes (17), une poche (19) destinée à recevoir un corps de roulement (04) étant formée entre les barres externes (17) et deux arcades de liaison (18). Selon l'invention, les segments de cage sont guidés dans le palier à roulement à l'aide d'éléments de guidage situés sur des surfaces de bord du palier à roulement et/ou sur les corps de roulement.
PCT/EP2010/061727 2009-08-13 2010-08-12 Segment de cage pour une cage en plastique de palier à roulement et palier à roulement pourvu d'un tel segment WO2011018490A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009037421A DE102009037421A1 (de) 2009-08-13 2009-08-13 Käfigsegment für einen Kunststoffkäfig eines Wälzlagers und Wälzlager mit einem solchen Käfigsegment
DE102009037421.3 2009-08-13

Publications (1)

Publication Number Publication Date
WO2011018490A1 true WO2011018490A1 (fr) 2011-02-17

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PCT/EP2010/061727 WO2011018490A1 (fr) 2009-08-13 2010-08-12 Segment de cage pour une cage en plastique de palier à roulement et palier à roulement pourvu d'un tel segment

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DE (1) DE102009037421A1 (fr)
WO (1) WO2011018490A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013225995A1 (de) * 2013-12-16 2015-06-18 Schaeffler Technologies AG & Co. KG Kunststoff-Wälzlagerkäfig für ein Schrägkugellager und Schrägkugellager

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2610511A1 (fr) * 2011-12-28 2013-07-03 Siemens Aktiengesellschaft Cage et roulement à éléments roulants
DE102012202894A1 (de) 2012-02-27 2013-08-29 Schaeffler Technologies AG & Co. KG Kunststoffkäfigsegment

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3336889A1 (de) * 1983-10-11 1985-04-25 FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt Segmentkaefig fuer rollenlager
DE8607236U1 (de) * 1986-03-15 1986-05-07 SKF GmbH, 8720 Schweinfurt Segmentkäfig
DE3509190A1 (de) * 1985-03-14 1986-09-18 FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt Segmentkaefig fuer rollenlager
DE10246825A1 (de) 2002-10-08 2004-04-22 Aktiebolaget Skf Käfig für ein Wälzlager
FR2876169A1 (fr) * 2004-10-05 2006-04-07 Defontaine Sa Element de cage de roulement
DE102006022951A1 (de) 2006-05-17 2007-11-22 Schaeffler Kg Käfigsegment für einen Käfig eines Wälzlagers
DE102007048655A1 (de) 2007-10-10 2008-02-07 Schaeffler Kg Käfigsegment eines Kunststoffkäfigs sowie Wälzlager mit dem Kunststoffkäfig

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3336889A1 (de) * 1983-10-11 1985-04-25 FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt Segmentkaefig fuer rollenlager
DE3509190A1 (de) * 1985-03-14 1986-09-18 FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt Segmentkaefig fuer rollenlager
DE8607236U1 (de) * 1986-03-15 1986-05-07 SKF GmbH, 8720 Schweinfurt Segmentkäfig
DE10246825A1 (de) 2002-10-08 2004-04-22 Aktiebolaget Skf Käfig für ein Wälzlager
FR2876169A1 (fr) * 2004-10-05 2006-04-07 Defontaine Sa Element de cage de roulement
DE102006022951A1 (de) 2006-05-17 2007-11-22 Schaeffler Kg Käfigsegment für einen Käfig eines Wälzlagers
DE102007048655A1 (de) 2007-10-10 2008-02-07 Schaeffler Kg Käfigsegment eines Kunststoffkäfigs sowie Wälzlager mit dem Kunststoffkäfig

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013225995A1 (de) * 2013-12-16 2015-06-18 Schaeffler Technologies AG & Co. KG Kunststoff-Wälzlagerkäfig für ein Schrägkugellager und Schrägkugellager

Also Published As

Publication number Publication date
DE102009037421A1 (de) 2011-02-17

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