DE10026652A1 - Cage for rolling elements - Google Patents

Cage for rolling elements

Info

Publication number
DE10026652A1
DE10026652A1 DE2000126652 DE10026652A DE10026652A1 DE 10026652 A1 DE10026652 A1 DE 10026652A1 DE 2000126652 DE2000126652 DE 2000126652 DE 10026652 A DE10026652 A DE 10026652A DE 10026652 A1 DE10026652 A1 DE 10026652A1
Authority
DE
Germany
Prior art keywords
cage
rolling elements
rolling
balls
guide
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.)
Withdrawn
Application number
DE2000126652
Other languages
German (de)
Inventor
Mohammad Mehdianpour
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DE2000126652 priority Critical patent/DE10026652A1/en
Priority to AU2001281703A priority patent/AU2001281703A1/en
Priority to DE10192256T priority patent/DE10192256D2/en
Priority to PCT/DE2001/002019 priority patent/WO2001092737A1/en
Publication of DE10026652A1 publication Critical patent/DE10026652A1/en
Withdrawn legal-status Critical Current

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
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/664—Retaining the liquid in or near the bearing
    • F16C33/6648—Retaining the liquid in or near the bearing in a porous or resinous body, e.g. a cage impregnated with the liquid
    • 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
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller 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
    • 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
    • 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
    • F16C33/3825—Ball cages formed as a flexible belt, e.g. spacers connected by a thin film
    • 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
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
    • F16C33/6607—Retaining the grease in or near the bearing
    • F16C33/6614—Retaining the grease in or near the bearing in recesses or cavities provided in retainers, races or rolling elements

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bearings For Parts Moving Linearly (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

Ein Käfig (3) für Wälzkörper (2) ist mit zu den Wälzkörpern hin offenen Hohlräumen (5) versehen, die als mitlaufendes Schmiermitteldepot dienen. Dadurch werden die Laufeigenschaften des Wälzlagers verbessert.A cage (3) for rolling elements (2) is provided with cavities (5) which are open towards the rolling elements and serve as a running lubricant reservoir. This improves the running properties of the rolling bearing.

Description

Die Erfindung bezieht sich auf einen Käfig für in einer Füh­ rung eines Wälzlagers umlaufende Wälzkörper.The invention relates to a cage for in a Füh rolling bearings.

Übliche Wälzlagerkäfige sind aus Streifenmaterial herge­ stellt, bei dem frei gestanzte und gebogene Lappen die Kugeln führen und auf Abstand halten, so daß eine gegenseitige Rei­ bung vermieden wird.Usual rolling bearing cages are made of strip material provides the balls with the freely punched and curved rag lead and keep at a distance, so that a mutual Rei exercise is avoided.

Durch die EP 0980986 A2 ist ferner eine Kugelumlaufführung für ein Linearlager bekannt geworden, bei dem der bandartige biegeelastische Käfig sich unterschiedlichen Krümmungen der Umlaufbahn anpassen kann.EP 0980986 A2 is also a recirculating ball guide for a linear bearing in which the band-like flexible cage itself different curvatures of the Can adjust orbit.

Zur Schmierung wird üblicherweisev in die Umlaufbahn Schmier­ fett eingebracht. Geringe Schmiermittelmengen können sich re­ lativ schnell verbrauchen, größere Schmiermittelmengen behin­ dern den Kugelumlauf. Insbesondere beim Nachfetten kann die Schmiermittelmenge nicht so genau dosiert werden, daß kein überschüssiges Fett in das Lager gelangt.Lubrication is usually carried out in the orbit for lubrication introduced in bold. Small amounts of lubricant can re Consume relatively quickly, larger quantities of lubricant available the ball recirculation. Especially when relubricating Lubricant amount are not dosed so precisely that none excess fat gets into the bearing.

Der aus dünnwandigem Material geformte Käfig führt die Kugeln im wesentlichen im Bereich der Wälzachse. Lücken in der Füh­ rungsbahn müssen daher sehr eng gehalten werden, um einen möglichst glatten Lauf der Wälzkörper zu erreichen.The cage made of thin-walled material guides the balls essentially in the area of the rolling axis. Gaps in the lead train path must therefore be kept very close to one to achieve smooth running of the rolling elements.

Der Erfindung liegt die Aufgabe zugrunde, die Führung und die Laufeigenschaften der Wälzkörper zu verbessern.The invention is based, the leadership and the task To improve the running properties of the rolling elements.

Diese Aufgabe wird durch die Erfindung gemäß Anspruch 1 ge­ löst. Die mitlaufenden Hohlräume machen es möglich, das Schmiermittel in ein mitlaufendes Depot definiert einzubrin­ gen, wodurch die störenden Fettüberschüsse vermieden werden. This object is achieved by the invention according to claim 1 solves. The moving cavities make it possible for that Introduce lubricants into a moving depot in a defined manner gene, which avoids the annoying excess of fat.  

Durch eine Weiterbildung der Erfindung sind die Hohlräume dicht angrenzend ausgebildet und daher durch die Wälzkörper abgedichtet, so daß das Schmierfett nicht frei austreten kann.Through a development of the invention, the cavities formed closely adjacent and therefore by the rolling elements sealed so that the grease does not leak freely can.

Durch die Weiterbildung nach Anspruch 3 kann der Käfig die Kugeln großflächig umgreifen und auch über Lücken in der Füh­ rungsbahn sicher hinweg führen. Der Käfig ist im Bereich der Kugeln so dünn ausgebildet, daß die Kugeln über die Außenwand des Käfigs hinaus durch die Durchbrüche hindurchragen und so ungehindert an den Laufflächen des Lagers entlang rollen kön­ nen.Through the training according to claim 3, the cage Grasp balls over large areas and also over gaps in the guide lead safely away. The cage is in the area of Balls so thin that the balls over the outer wall of the cage protrude through the openings and so can roll freely along the bearing treads NEN.

Durch die Weiterbildung nach Anspruch 4 ist es möglich, den Käfig für Lager zu verwenden, die keine kreisrunde Umlaufbahn aufweisen. Dies können zum Beispiel Linearlager sein, bei de­ nen sich gekrümmte und lineare Umlaufabschnitte abwechseln.Through the training according to claim 4, it is possible Cage to use for bearings that have no circular orbit exhibit. These can be linear bearings, for example, at de alternate curved and linear orbital sections.

Im folgenden wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert.In the following the invention with reference to one in the drawing illustrated embodiment explained in more detail.

Fig. 1 zeigt einen Schnitt durch einen Teil eines Linearla­ gers mit einem schlauchartigen Käfig, Fig. 1 shows a section through part of a Linearla gers with a tubular cage,

Fig. 2 eine Draufsicht auf einen Abschnitt des Käfigs nach Fig. 1. FIG. 2 is a top view of a portion of the cage of FIG. 1.

Nach den Fig. 1 und 2 weist eine Linearführung eines Line­ arlagers zwei gegeneinander verschiebbare Führungskörper 1 auf, in die lineare Führungsnuten eingeformt sind, in denen als Kugeln ausgebildete Wälzkörper 2 geführt sind. Diese sind mit Abstand zueinander in einem schlauchartigen Käfig 3 auf­ genommen, der mit kreisrunden Durchbrüchen 4 versehen ist, durch die die Wälzkörper 2 eng anliegend partiell hindurchra­ gen. Die Führungsnuten sind im Querschnitt polygonal ausge­ bildet, so daß die Wälzkörper 2 mehrfach abgestützt sind. Dementsprechend sind hier an jeder Kugel zwei Paare der ein­ ander diametral gegenüberliegenden Durchbrüche 4 ausgebildet. According to FIGS. 1 and 2, a linear guide of a Line arlagers two mutually displaceable guide body 1, are formed in the linear guide grooves are performed in which rolling elements configured as balls 2. These are at a distance from each other in a tubular cage 3 , which is provided with circular openings 4 through which the rolling elements 2 closely fitting partially throughra gene. The guide grooves are polygonal in cross section, so that the rolling elements 2 are supported several times. Accordingly, two pairs of diametrically opposite openings 4 are formed on each ball here.

Zwischen den Kugeln ist der Innendurchmesser des Wälzkörpers 2 geringer als der Kugeldurchmesser. Im Bereich der Kugeln ist somit der Käfig ballig erweitert, so daß die Wälzkörper 2 großflächig umschlossen sind. In die verbleibenden Hohlräume 5 des Käfigs 3 kann Schmierfett eingesetzt werden, das als mitlaufendes Schmiermitteldepot dient.Between the balls, the inner diameter of the rolling element 2 is less than the ball diameter. In the area of the balls, the cage is thus crowned, so that the rolling elements 2 are enclosed over a large area. In the remaining cavities 5 of the cage 3 , grease can be used, which serves as an accompanying lubricant depot.

Claims (4)

1. Käfig (3) für in einer Führung eines Wälzlagers umlaufende Wälzkörper (2), dadurch gekennzeichnet, daß der Käfig (3) zwischen den Wälzkörpers (2) unmittelbar an diese angren­ zende Hohlräume (5) aufweist.1. Cage ( 3 ) for rolling elements rotating in a guide of a rolling bearing ( 2 ), characterized in that the cage ( 3 ) between the rolling elements ( 2 ) has these adjacent cavities ( 5 ). 2. Käfig nach Anspruch 1, dadurch gekennzeichnet, daß die dicht angrenzenden Hohlräume (5) mit Schmierfett füllbar sind.2. Cage according to claim 1, characterized in that the closely adjacent cavities ( 5 ) can be filled with grease. 3. Käfig nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Wälz­ körper (2) als Kugeln ausgebildet sind,
daß der Käfig (3) rohrartig ausgebildet ist,
daß der Innendurchmesser des Käfigs (3) in den Abschnitten zwischen den Wälzkörpern (2) kleiner ist als deren Durchmes­ ser,
daß der Innenraum des Käfigs (3) im Bereich der Wälzkörper (2) auf deren Durchmesser ballig erweitert ist und
daß für jeden der Wälzkörper (2) im Käfig (3) zumindest zwei einander diametral gegenüberliegende Durchbrüche (4) vorgese­ hen sind, durch die die Wälzkörper hindurchragen.3. Cage according to claim 1 or 2, characterized in that the rolling bodies ( 2 ) are designed as balls,
that the cage ( 3 ) is tubular,
that the inside diameter of the cage ( 3 ) in the sections between the rolling elements ( 2 ) is smaller than their diameter,
that the interior of the cage ( 3 ) in the area of the rolling elements ( 2 ) is crowned to their diameter and
that for each of the rolling elements ( 2 ) in the cage ( 3 ) at least two diametrically opposite openings ( 4 ) are hen vorgese through which the rolling elements protrude. 4. Käfig nach Anspruch 3, dadurch gekennzeichnet, daß der Käfig (3) als biegeelastischer Kugelschlauch ausgebildet und in ei­ ne Führung eines nicht zirkulären Kugelumlauflagers einsetz­ bar ist.4. Cage according to claim 3, characterized in that the cage ( 3 ) is designed as a flexible elastic hose and can be used in egg ne guide of a non-circular ball bearing.
DE2000126652 2000-05-29 2000-05-29 Cage for rolling elements Withdrawn DE10026652A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE2000126652 DE10026652A1 (en) 2000-05-29 2000-05-29 Cage for rolling elements
AU2001281703A AU2001281703A1 (en) 2000-05-29 2001-05-29 Cage for rolling bodies
DE10192256T DE10192256D2 (en) 2000-05-29 2001-05-29 Cage for rolling elements
PCT/DE2001/002019 WO2001092737A1 (en) 2000-05-29 2001-05-29 Cage for rolling bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2000126652 DE10026652A1 (en) 2000-05-29 2000-05-29 Cage for rolling elements

Publications (1)

Publication Number Publication Date
DE10026652A1 true DE10026652A1 (en) 2002-01-17

Family

ID=7644012

Family Applications (2)

Application Number Title Priority Date Filing Date
DE2000126652 Withdrawn DE10026652A1 (en) 2000-05-29 2000-05-29 Cage for rolling elements
DE10192256T Expired - Fee Related DE10192256D2 (en) 2000-05-29 2001-05-29 Cage for rolling elements

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE10192256T Expired - Fee Related DE10192256D2 (en) 2000-05-29 2001-05-29 Cage for rolling elements

Country Status (3)

Country Link
AU (1) AU2001281703A1 (en)
DE (2) DE10026652A1 (en)
WO (1) WO2001092737A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011017753A1 (en) * 2011-04-29 2012-10-31 Aktiebolaget Skf Cage for receiving rolling elements, linear bearings and method for providing a cage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE297181C (en) * 1900-01-01
DE195673C (en) * 1900-01-01
DE3812377C1 (en) * 1988-04-14 1989-06-01 Skf Linearsysteme Gmbh, 8720 Schweinfurt, De Cage for linear roller bearings
DE3800729A1 (en) * 1988-01-13 1989-07-27 Skf Linearsysteme Gmbh Cage for a roller bearing executing linear or rotary movements
EP0980986A2 (en) * 1998-08-18 2000-02-23 THK Co., Ltd. Linear rolling motion guide apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3073656A (en) * 1963-01-15 Best available copy
DE3434197A1 (en) * 1984-09-18 1986-03-27 Franke & Heydrich Kg, 7080 Aalen Ball cage for a linear guide
FR2644835B1 (en) * 1989-03-23 1995-07-21 Giselbrecht Yves SLIDER FOR RIGHT MOVEMENT OF FURNITURE DOORS
FR2667369B1 (en) * 1990-09-28 1995-01-06 Snr Roulements Sa SELF-LUBRICATING CAGE FOR BEARING OR BEARING.
JPH11294452A (en) * 1998-04-06 1999-10-26 Nippon Seiko Kk Ball chain

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE297181C (en) * 1900-01-01
DE195673C (en) * 1900-01-01
DE3800729A1 (en) * 1988-01-13 1989-07-27 Skf Linearsysteme Gmbh Cage for a roller bearing executing linear or rotary movements
DE3812377C1 (en) * 1988-04-14 1989-06-01 Skf Linearsysteme Gmbh, 8720 Schweinfurt, De Cage for linear roller bearings
EP0980986A2 (en) * 1998-08-18 2000-02-23 THK Co., Ltd. Linear rolling motion guide apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DE-Buch, W. Jürgensmeyer, "Die Wälzlager", Berlin Springer Verlag 1937 S. 38 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011017753A1 (en) * 2011-04-29 2012-10-31 Aktiebolaget Skf Cage for receiving rolling elements, linear bearings and method for providing a cage
DE102011017753B4 (en) * 2011-04-29 2014-06-05 Aktiebolaget Skf Cage for receiving rolling elements, linear bearings and method for providing a cage

Also Published As

Publication number Publication date
WO2001092737A1 (en) 2001-12-06
DE10192256D2 (en) 2003-08-28
AU2001281703A1 (en) 2001-12-11

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8143 Withdrawn due to claiming internal priority