WO2011018489A1 - 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
WO2011018489A1
WO2011018489A1 PCT/EP2010/061726 EP2010061726W WO2011018489A1 WO 2011018489 A1 WO2011018489 A1 WO 2011018489A1 EP 2010061726 W EP2010061726 W EP 2010061726W WO 2011018489 A1 WO2011018489 A1 WO 2011018489A1
Authority
WO
WIPO (PCT)
Prior art keywords
cage
cage segment
webs
segment according
rolling
Prior art date
Application number
PCT/EP2010/061726
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 WO2011018489A1 publication Critical patent/WO2011018489A1/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
    • F16C33/3806—Details of interaction of cage and race, e.g. retention, centring
    • 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
    • F16C33/38—Ball cages
    • F16C33/3837—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages
    • F16C33/3862—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages comprising two annular parts joined together
    • F16C33/3875—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages comprising two annular parts joined together made from plastic, e.g. two injection moulded parts joined by a snap fit
    • 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
    • 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 of a radial grooved ball bearing, which is to be operable at operating temperatures up to 150 0 C and has a pitch circle diameter greater than 500 mm.
  • 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 rolling elements.
  • the cage segments lie loosely against one another at 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.
  • German Patent Disclosures DE 10 2006 022 951 A1 and DE 10 2007 048 655 A1 disclose 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 deep groove ball bearing (single or multi-row), whereby particular value is attached to a simple assembly in a self-retaining rolling bearing value. Furthermore, an improved guidance of the cage in the rolling bearing is to be achieved.
  • a further object is to provide a radial deep groove ball bearing with a plastic cage formed from segments. The object is achieved by a cage segment having the features of claim 1 and by a rolling bearing having the features of claim 13.
  • 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 is provided on a first end side and a second coupling element is provided on a second end side, each of which is shaped 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.
  • Between the outer webs and two connecting webs cage pockets are formed for receiving a rolling element.
  • the connections at the coupling points are provided with a clearance fit.
  • the clearance has a size that corresponds to a swelling or thermal expansion of the cage material in a predetermined tolerance range.
  • one or more pockets may be formed.
  • the cage segment has an axial pitch with a connection point.
  • the connection point can be provided either between one of the outer webs and the connecting webs of the other outer web or in each case in the connecting webs and should preferably not be able to be separated without destruction.
  • connection point is executed in a preferred embodiment as a snap or snap connection and geometrically designed so that the joining takes place under a certain compressive force and an independent decoupling not can be done. If the connection point is provided in the middle of the track in the connecting webs, it must be formed in the circumferential direction so that no contact with the rolling elements takes place. If necessary, the joint is geometrically set back from the raceway.
  • the advantages of the invention are to be seen in particular in that the assembly of the rolling bearing with a plastic cage is easily possible.
  • the rolling elements are first inserted between the two bearing rings.
  • the cage segments divided in the axial direction which were preferably assembled beforehand in the direction of rotation to form a "half" cage, are introduced from both bearing side surfaces between the rolling elements and connected to one another.
  • the connection point in the circumferential direction is preferably structurally designed so that the connection can be released when a limit force is exceeded and when the speed falls below it, it can also be reconnected or latched together.
  • the connection point is designed as a snap connection, rivet or screw connection.
  • the guide of the cage formed from the segments takes place via the flange surfaces of the bearing and / or via the rolling elements.
  • the contact of the rolling elements in the cage pocket is to be loosened geometrically such that the rolling element (for example the ball) touches the cage pocket to the right and left of its largest diameter.
  • the rolling element for example the ball
  • Half the ball diameter should run freely in the middle. As a result, there is no stripping of the lubricant.
  • 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 skid shape to the friction and the sliding on the board surfaces improve.
  • An inventive rolling bearing in particular a radial deep groove ball bearing comprises an inner ring, an outer ring and between them arranged in a cage rolling elements, wherein the cage is composed of the previously described segments.
  • the flange surfaces on the outer ring can be ground to improve the sliding properties.
  • 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 so that the rolling elements, especially the ball touches the cage only in a small diameter range and the segment is touched and guided only in this area of the balls. This largely prevents the wiping of the lubricant.
  • FIGS. 1 shows a schematic representation of a rolling element-guided plastic cage according to the invention made of segments
  • FIG. 2 shows a schematic representation of a board-guided plastic cage according to the invention, formed from segments
  • Fig. 3 five schematic representations of an axial connection point of a cage segment
  • Fig. 4 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 principle known type and will be explained in more detail below.
  • the cage segment 07 is according to the invention divided in the axial direction and connectable at a junction 09. The leadership of the cage is done by the balls 04 via guide elements, not shown.
  • Fig. 2 also shows a schematic representation of a radial deep groove ball bearing with a board-guided plastic cage.
  • the bearing basically has the same known structure, therefore, carry the same components the same reference numerals as in Fig. 1.
  • the guide of the cage takes place on board surfaces 10 of the inner ring 02 and the outer ring 01.
  • guide webs 11 are formed for guiding the cage on the flange surfaces 10.
  • the guide webs 11 are formed skid-shaped to minimize frictional forces.
  • FIG. 3 several exemplary possibilities of the axial connection point 09 are shown.
  • snap and screw or rivet can be selected.
  • the snap connections are each carried out with complementarily shaped axial coupling elements 12, 13 which have the following different cross-sectional shapes: Fig. A) rectangular, Fig. B) spherical, Fig. C) semicircular, Fig. D) disc-shaped (rectangular cross-section).
  • a connection by means of connecting means 14 is shown, which must be secured against self-loosening by known means.
  • connecting means 14 resists, pins, screws or the like
  • a positive mounting aid 16 may be provided.
  • FIG. 4 shows various possibilities of radial coupling elements.
  • 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.
  • the outer webs 17 coupling recesses 23, in wel surface can engage the corresponding coupling webs 22 of a further identically constructed cage segment.
  • latching projections 24 are provided which engage in latching 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 latching recesses 26, in which latching 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 locking projection 24 within the recess 26 has a game s in the circumferential direction of the cage segment to accommodate expansions can.
  • Fig. C shows an asymmetrical design of the radial coupling elements.
  • 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 Rastaus fundamentalun- gene 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, en particulier pour une couronne d'orientation conçue comme roulement à billes rainuré radial. Le segment de cage comporte 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, le segment de cage est divisé dans la direction axiale. Un élément d'accouplement axial (12, 13) est situé à un site de liaison (09). La présente invention concerne en outre un palier à roulement pourvu d'une cage selon l'invention.
PCT/EP2010/061726 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 WO2011018489A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009037422.1 2009-08-13
DE102009037422A DE102009037422A1 (de) 2009-08-13 2009-08-13 Käfigsegment für einen Kunststoffkäfig eines Wälzlagers und Wälzlager mit einem solchen Käfigsegment

Publications (1)

Publication Number Publication Date
WO2011018489A1 true WO2011018489A1 (fr) 2011-02-17

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PCT/EP2010/061726 WO2011018489A1 (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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Country Link
DE (1) DE102009037422A1 (fr)
WO (1) WO2011018489A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012104194A3 (fr) * 2011-01-31 2012-11-29 Aktiebolaget Skf Cage à segments et procédé de montage d'un palier à roulement
DE102015201101A1 (de) * 2015-01-23 2016-07-28 Schaeffler Technologies AG & Co. KG Wälzlager

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013215204A1 (de) * 2013-08-02 2015-02-05 Schaeffler Technologies Gmbh & Co. Kg Geteilter Wälzkörperkäfig aus Kunststoff
DE102015206533A1 (de) 2015-04-13 2016-10-13 Schaeffler Technologies AG & Co. KG Käfigsegment eines Käfigs eines Wälzlagers und Käfig eines Wälzlagers
ITUB20152816A1 (it) * 2015-08-03 2017-02-03 Skf Ab Gabbia per un cuscinetto di rotolamento e cuscinetto di rotolamento associato
DE102015219277A1 (de) 2015-10-06 2017-04-06 Schaeffler Technologies AG & Co. KG Käfigsegment eines Wälzlagers
DE102016206072B4 (de) 2016-04-12 2018-02-22 Schaeffler Technologies AG & Co. KG Wälzlagerkäfig
DE102016207034A1 (de) 2016-04-26 2017-10-26 Schaeffler Technologies AG & Co. KG Käfigsegment eines Zylinderrollenlagers
DE102016219892A1 (de) 2016-10-12 2018-04-12 Schaeffler Technologies AG & Co. KG Käfigsegment eines Wälzlagers

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1914884U (de) * 1965-03-03 1965-04-29 Duerkoppwerke Ag Waelzlager mit kunststoffkaefig.
DE1575714A1 (de) * 1966-12-03 1970-02-12 Leipziger Kugellagerfabrik Dkf Waelzkoerperkaefig
DE3908413C1 (en) * 1989-03-15 1990-05-10 Skf Linearsysteme Gmbh, 8720 Schweinfurt, De Cage for rolling bodies
DE10246825A1 (de) 2002-10-08 2004-04-22 Aktiebolaget Skf Käfig für ein Wälzlager
DE102006022951A1 (de) 2006-05-17 2007-11-22 Schaeffler Kg Käfigsegment für einen Käfig eines Wälzlagers
DE102006030950A1 (de) * 2006-07-05 2008-01-10 Ab Skf Kammdeckelkäfig für ein Wälzlager
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
DE1914884U (de) * 1965-03-03 1965-04-29 Duerkoppwerke Ag Waelzlager mit kunststoffkaefig.
DE1575714A1 (de) * 1966-12-03 1970-02-12 Leipziger Kugellagerfabrik Dkf Waelzkoerperkaefig
DE3908413C1 (en) * 1989-03-15 1990-05-10 Skf Linearsysteme Gmbh, 8720 Schweinfurt, De Cage for rolling bodies
DE10246825A1 (de) 2002-10-08 2004-04-22 Aktiebolaget Skf Käfig für ein Wälzlager
DE102006022951A1 (de) 2006-05-17 2007-11-22 Schaeffler Kg Käfigsegment für einen Käfig eines Wälzlagers
DE102006030950A1 (de) * 2006-07-05 2008-01-10 Ab Skf Kammdeckelkäfig für ein Wälzlager
DE102007048655A1 (de) 2007-10-10 2008-02-07 Schaeffler Kg Käfigsegment eines Kunststoffkäfigs sowie Wälzlager mit dem Kunststoffkäfig

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012104194A3 (fr) * 2011-01-31 2012-11-29 Aktiebolaget Skf Cage à segments et procédé de montage d'un palier à roulement
US9057405B2 (en) 2011-01-31 2015-06-16 Aktiebolaget Skf Method for installing a rolling-element bearing
DE102015201101A1 (de) * 2015-01-23 2016-07-28 Schaeffler Technologies AG & Co. KG Wälzlager

Also Published As

Publication number Publication date
DE102009037422A1 (de) 2011-02-17

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