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WO2009033457A1 - Cage pour la réception d'un certain nombre de corps roulants d'un roulement et procédé de lubrification d'un roulement - Google Patents

Cage pour la réception d'un certain nombre de corps roulants d'un roulement et procédé de lubrification d'un roulement Download PDF

Info

Publication number
WO2009033457A1
WO2009033457A1 PCT/DE2008/001480 DE2008001480W WO2009033457A1 WO 2009033457 A1 WO2009033457 A1 WO 2009033457A1 DE 2008001480 W DE2008001480 W DE 2008001480W WO 2009033457 A1 WO2009033457 A1 WO 2009033457A1
Authority
WO
WIPO (PCT)
Prior art keywords
cage
lubricant
depot
lubricants
rolling
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.)
Ceased
Application number
PCT/DE2008/001480
Other languages
German (de)
English (en)
Inventor
Arbogast Grunau
Sergej Schwarz
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.)
IHO Holding GmbH and Co KG
Original Assignee
Schaeffler 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 KG filed Critical Schaeffler KG
Publication of WO2009033457A1 publication Critical patent/WO2009033457A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • F16C33/66—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
    • F16C33/6651—Retaining the liquid in or near the bearing in recesses or cavities provided in retainers, races or rolling elements
    • 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

Definitions

  • the invention relates to a cage for receiving a number of rolling elements of a rolling bearing, with a number of the rolling elements receiving pockets, wherein the cage comprises at least one filled with a lubricant depot space to a discharge of the lubricant during operation.
  • the invention further relates to a method for lubricating a rolling bearing.
  • a rolling bearing often comprises a so-called inner ring and an outer ring, wherein between the inner ring and the outer ring, a number of rolling elements is arranged.
  • the rolling elements are usually arranged in a cage, so that the rolling elements are held by the cage at a defined distance from each other.
  • the rolling elements received in the cage roll along a raceway on the inner ring and the outer ring.
  • Lubrication by means of a lubricant is advantageous for the operation of the roller bearing.
  • the amount of available between the rolling elements and the outer / inner ring lubricant often has a direct impact on the life and the functioning of a rolling bearing. If, for example, too little lubricant is present, this can lead to premature wear of the rolling bearing. Too much lubricant leads to an increase in the frictional resistance.
  • the object of the invention is to provide a life-extending cage for a roller bearing which is as versatile as possible.
  • a cage for receiving a number of rolling elements of a rolling bearing, with a number of the rolling elements receiving pockets, wherein the cage comprises at least one filled with a lubricant depot space to a discharge of the lubricant during operation. It is provided that the depot space has at least two depot sections, in which different lubricants are arranged, and that each depot section comprises at least one lubricant-permeable passage area for dispensing the lubricant.
  • Depot sections are generally understood to mean spatial areas in which the lubricants are located.
  • the depot sections for the different lubricants here need not be separated or delimited locally.
  • the depot sections can interlock, for example when the lubricants are immiscible lubricants which are arranged together in one space.
  • a targeted delivery of the lubricant from the corresponding deposit section to the area to be lubricated takes place via the respective pass-through area, for. B. to the rolling elements.
  • This ensures a uniform lubrication between the rolling elements and, for example, the inner ring of the rolling bearing.
  • the passage region is preferably arranged in such a way that delivery of the lubricant takes place into the pockets receiving the rolling bodies.
  • the lubricant will, for example, deliver as a drop into the pocket such that the drop wets the surface of the rolling element in the pocket, so that the lubricant is evenly distributed along the raceway of the rolling elements by the rotation of the rolling element.
  • the corresponding passage region in such a way that delivery of the lubricant takes place directly on the raceway of the rolling element.
  • the delivery of a lubricant via the corresponding passage region then takes place, for example, from a single depot section or alternatively, for example, the delivery of a mixture of several lubricants from different depot sections is possible.
  • the depot space is formed for example as a cavity within the cage, wherein the individual depot sections are separated from each other, for example by walls.
  • the respective lubricants are introduced, for example, as a lubricating oil or as a grease in the depot section.
  • the depot space has a porous This material on, for example, a sponge or a porous cage section, wherein the corresponding lubricant, for example, impregnates the porous material.
  • a lubricant in particular is arranged in the quantity intended for the service life of the rolling bearing, so that no subsequent filling of the depot sections becomes necessary.
  • the passage region and / or the lubricants are preferably designed such that the delivery of the respective lubricant takes place as a function of a current operating state.
  • the lubrication with a lubricant adapted to the respective operating condition ensures the functionality and increases the service life of the rolling bearing.
  • the delivery of the corresponding lubricant is thereby preferably automatically, for example via a speed-dependent force, for. B. via a centrifugal force regulated. It is also possible that a regulation of the delivery of the corresponding lubricant is provided via the action of a chemical reaction, for example via a variable by a chemical reaction control element.
  • the lubricants have different viscosities.
  • the delivery of a lubricant with a high viscosity over the corresponding passage area takes place only under the action of a magnitude larger force acting in the radial direction, for.
  • a centrifugal force as the delivery of a lubricant with a lower viscosity.
  • the lubrication of the bearing takes place with a mixture of lubricants of different viscosities, wherein z. B.
  • the passage region is oriented in the radial direction. Accordingly, the passage region is oriented substantially in the direction of the axis of rotation about which the cage moves during operation, so that the delivery of the lubricant takes place directly into the raceway of the rolling element. As a result, in particular a minimal quantity lubrication is made possible.
  • the delivered amount of lubricant via the action of a force acting in the radial direction, for. As a centrifugal force that acts on the cage during operation to dose in a simple manner as needed. The lubricant quantity required for the current operating state is thus "automatically" metered into the raceway of the rolling element.
  • the cage comprises at least one porous portion forming the passage area, the porous portion being provided for discharging the lubricant.
  • This embodiment is particularly simple and inexpensive to implement by the existing example of plastic or metal cage is designed to be porous overall.
  • the lubricant is then "automatically” forced out of the depot section in the radial direction through the passage area, so that the lubricant is discharged directly into the raceway of the rolling element.
  • the porosity varies within a passband or between different passbands to achieve control of the amount of lubricant dispensed.
  • the passage region comprises a channel for dispensing the lubricant.
  • it is z. B. on the choice of an opening cross-section of the channel possible, in particular to selectively influence the discharge amount of the corresponding lubricant.
  • the delivered amount of lubricant will be reduced to a necessary 5 maneuverable minimum.
  • the channels for the depot sections have different opening cross-sections.
  • a lubricant-specific optimal delivery quantity from the corresponding depot section is controlled via the choice of the corresponding opening cross-section.
  • the opening cross section of the channel is variable, i. it can be varied during operation.
  • the various depot sections are preferably assigned different types of channels whose respective openings change at a different temperature, so that the delivery of a lubricant from the corresponding depot section can be controlled in a temperature-dependent manner.
  • the passage region comprises a closing component, wherein the closure component is provided in FIG.
  • Such a closure component is for example a plug which closes the corresponding channel and which is dissolved, for example, in the presence of an acid or a basic fluid, so that the corresponding channel is opened for the delivery of a lubricant adapted to an acidic or basic ambient condition
  • a closure component is for example one Component that z. B. in the manufacture of the porous portion of the cage, which forms the passage area, is added and depending on the ambient conditions, for example due to chemical or physical processes changed their volume.
  • the component is selected such that it reduces its volume over a certain temperature interval and thus releases the pores of the passage region for the delivery of a lubricant which has been adapted to this temperature interval.
  • the component responds to the ph value of the medium surrounding the cage.
  • the closure component is an active closure component, e.g. B. as a piezoelectric element formed.
  • the closure component is designed such that it acts only once and in particular under certain extraordinary environmental conditions, in particular opens.
  • the suitable lubricant can be selected once.
  • this measure serves to ensure unique emergency running properties in exceptional conditions, for example when the bearing is exposed to aggressive chemicals.
  • the closure component is temperature-dependent, for which purpose a material pairing with different thermal expansion coefficients is provided.
  • a temperature-dependent volume Modification of the closure component of the passage region temperature-dependent for a delivery of the lubricant from the passage section associated depot automatically opened or closed.
  • the temperature-dependent controllable closure component is formed as a tube inserted into the respective channels, wherein the thermal expansion coefficients of the tube and of the material surrounding the channel are different.
  • a plastic tube is simply inserted into a channel assigned to a depot section, so that, for example, the delivery of the lubricant located in the depot section is possible at a low temperature.
  • the plastic tube expands faster than the opening cross-section of the channel, so that from a certain temperature limit, the tube clogged the channel, so to speak, so that the lubricant can no longer flow through the channel.
  • the temperature-dependent expansion behavior of the tubes is predetermined in order to regulate temperature-dependent opening or closing of the channel for dispensing the corresponding lubricant.
  • the object is further achieved according to the invention by a method having the features of claim 15.
  • the advantages and preferred embodiments cited with regard to the cage can also be transferred analogously to the method. With such a method, the advantage of a needs-based, in particular dependent on the ambient conditions lubricant dosage can be achieved. Of particular advantage is further that the lubricant is integrated directly in the cage, so that no complex lubricant supply is required.
  • Fig. 1 in a cross section of a detail of a detail
  • FIG 3 shows in a cross section a detail of a detail of a cage in a third embodiment.
  • a cage 1 of a rolling bearing 2 shown in fragmentary form in the circumferential direction evenly distributed several pockets 3, in each of which a rolling element 4 is received.
  • the cage 1 with the rolling element 4 is between an inner ring. 5 and an outer ring 6 is arranged.
  • the rolling elements 4 protrude out of the pockets 3 and roll in operation on a respective raceway 7 of the inner ring 5 and of the outer ring 6.
  • one of the rings 5, 6 is stationary and the other ring 6, 5 rotates about a central axis of rotation of the roller bearing 2, for example in the direction of movement 10.
  • the cage 1 comprises a number of depot spaces 11. Two depot spaces 11 can be seen in each of the sectional representations of the figures. Each depot space 11 in turn comprises two depot sections 14. Each depot section 14 is filled with a lubricant 15, 15 '. The lubricating properties of the respective lubricants 15, 15 'differ from one another. The dimensions and the volume of the respective depot section 14 are selected so that the amount of lubricant 15, 15 'is sufficient for the service life of the rolling bearing 2.
  • the cage 1 is made in the embodiment of FIG. 1 from a material having porous properties, so that a delivery of the respective lubricant 15,15 'from the corresponding depot section 14 via a porous section 16 of the cage 1 takes place.
  • the depot sections are separated from each other by an inner wall 17.
  • the lubricant 15, 15 ' is then uniformly distributed on the track 7.
  • the porosity of the porous sections 16 differs with each other, depending on which depot section 14 of the porous section 16 is assigned. As a result, it is achieved that the different lubricants 15, 15 'are automatically metered onto the track 7 in a different mixing ratio as a function of the speed. For example, the lubricant 15 'have a higher viscosity, such that z. B.
  • the porous section 16 which is assigned to the corresponding depot section 14, has a higher porosity, ie a greater pore density, the proportion of the lubricant 15 'discharged at a higher speed increases relatively faster than the proportion of the lubricant 15 delivered
  • the suitable mixing ratio of the lubricants 15, 15' for the respective speed range.
  • the lubricant 15,15 ' is forced out of the respective depot section 14 under the action of a force acting in the radial direction 19 and metered onto the raceway 7 of the rolling element 4, whereby the lubricant 15,15' uniformly on the track 7 is distributed.
  • the individual channels 27 have a different diameter 30 and thus a different opening cross-section. This lubricant-specific optimal release amount from the respective depot section 14 can be controlled.
  • lubricants 15,15 ' are preferably filled with different viscosities.
  • a lubricant 15 ' is provided for lubrication at a low temperature up to a limit T1.
  • the other lubricant 15 is provided for lubrication at a higher temperature from a limit T2.
  • Each depot section 14 is assigned in each case a channel 27, via which the respective lubricant 15, 15 'is released under the action of a force acting in the radial direction 19 from the respective depot section 14 and is metered directly onto the track 7.
  • a tube 31 made of a plastic is inserted in one of the channels 27 as a closure component in the exemplary embodiment of FIG.
  • the figure shows the state of the cage 1, as it appears at a high operating temperature, which is above T1:
  • the tube 31 is inserted into the channel 27 associated with the depot section 14 with the low temperature lubricant 15 '.
  • the inserted tube 31 closes the channel 27 and thus prevents the delivery of the corresponding lubricant 15 '. If in this case the temperature drops below a value T1, then the expansion of the tube 31 "shrinks" so that a flow of the lubricant 15 'is made possible. It is different in the channel 27, which is associated with the depot section 14 with the lubricant 15 for a lubrication at a high temperature.
  • the diameter 30 of this channel 27 is chosen such that at a high temperature, which is above a value T2, a delivery of the corresponding lubricant 15 is possible. If in this case the temperature falls below the given limit value T2, the viscosity of the lubricant 15 increases on the one hand, with which the lubricant 15 becomes more viscous. On the other hand, the diameter 30 of the channel 27 "shrinks". Overall, therefore, the lubricant 15 can no longer flow through the channel 27. This ensures automatically adapted to the given temperature condition lubrication of the bearing 2.

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

Abstract

L'invention concerne une cage (1) pouvant recevoir un certain nombre de corps roulants (4) d'un roulement (2), comprenant un certain nombre de logements (3) pour les corps roulants (4), la cage (1) étant dotée d'au moins une chambre de dépôt (11) remplie de lubrifiant (15, 15'), assurant la distribution du lubrifiant (15, 15') au cours du fonctionnement. La chambre de dépôt (11) selon l'invention comporte au moins deux sections de dépôt (14) contenant des lubrifiants (15, 15') différents, et chaque section de dépôt (14) comporte au moins une zone de passage (16, 27) de lubrifiant (15, 15') permettant la distribution de celui-ci.
PCT/DE2008/001480 2007-09-14 2008-09-03 Cage pour la réception d'un certain nombre de corps roulants d'un roulement et procédé de lubrification d'un roulement Ceased WO2009033457A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007044014.8 2007-09-14
DE102007044014A DE102007044014A1 (de) 2007-09-14 2007-09-14 Käfig zur Aufnahme einer Anzahl von Wälzkörpern eines Wälzlagers und Verfahren zur Schmierung eines Wälzlagers

Publications (1)

Publication Number Publication Date
WO2009033457A1 true WO2009033457A1 (fr) 2009-03-19

Family

ID=39957713

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/001480 Ceased WO2009033457A1 (fr) 2007-09-14 2008-09-03 Cage pour la réception d'un certain nombre de corps roulants d'un roulement et procédé de lubrification d'un roulement

Country Status (2)

Country Link
DE (1) DE102007044014A1 (fr)
WO (1) WO2009033457A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014181724A (ja) * 2013-03-18 2014-09-29 Nippon Thompson Co Ltd 貯油板を備えた直動案内ユニット

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010010505A1 (de) 2010-03-06 2011-09-08 Schaeffler Technologies Gmbh & Co. Kg Radialwälzlager
DE102010014321B4 (de) * 2010-04-09 2014-06-05 Oerlikon Leybold Vacuum Gmbh Turbomolekularpumpe
DE102013210526B3 (de) * 2013-06-06 2014-11-27 Aktiebolaget Skf Wälzlager und Verfahren zum Herstellen eines Wälzlagers
DE102013210523B4 (de) 2013-06-06 2024-04-18 Aktiebolaget Skf Wälzlager
DE102013210522A1 (de) 2013-06-06 2014-12-11 Aktiebolaget Skf Wälzlager
DE102013211906B4 (de) * 2013-06-24 2019-07-25 Aktiebolaget Skf Wälzlagerkäfig oder Segment für einen Wälzlagerkäfig und Wälzlager
DE102014222093A1 (de) * 2014-10-29 2016-05-04 Aktiebolaget Skf Wälzlagerkäfig
CN117052795B (zh) * 2023-08-31 2024-01-26 福赛轴承（嘉兴）有限公司 一种轴承

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1136712A1 (fr) * 2000-03-23 2001-09-26 Minebea Co., Ltd. Palier à billes et mèthode de lubrification
US20020041719A1 (en) * 2000-09-22 2002-04-11 Nsk Ltd. Retainer for rolling bearing and rolling bearing
JP2007315587A (ja) * 2006-04-28 2007-12-06 Nachi Fujikoshi Corp 合成樹脂製ベアリング用リテーナ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2821651B1 (fr) 2001-03-01 2004-05-14 Roulements Soc Nouvelle Cage a reserve de substance lubrifiante

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1136712A1 (fr) * 2000-03-23 2001-09-26 Minebea Co., Ltd. Palier à billes et mèthode de lubrification
US20020041719A1 (en) * 2000-09-22 2002-04-11 Nsk Ltd. Retainer for rolling bearing and rolling bearing
JP2007315587A (ja) * 2006-04-28 2007-12-06 Nachi Fujikoshi Corp 合成樹脂製ベアリング用リテーナ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014181724A (ja) * 2013-03-18 2014-09-29 Nippon Thompson Co Ltd 貯油板を備えた直動案内ユニット

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