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WO2017084659A1 - Cage de palier à roulement - Google Patents

Cage de palier à roulement Download PDF

Info

Publication number
WO2017084659A1
WO2017084659A1 PCT/DE2016/200476 DE2016200476W WO2017084659A1 WO 2017084659 A1 WO2017084659 A1 WO 2017084659A1 DE 2016200476 W DE2016200476 W DE 2016200476W WO 2017084659 A1 WO2017084659 A1 WO 2017084659A1
Authority
WO
WIPO (PCT)
Prior art keywords
rolling
bearing cage
rolling bearing
pocket
cage
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/DE2016/200476
Other languages
German (de)
English (en)
Inventor
Jörg NEUKIRCHNER
Tobias Hock
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and 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 AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of WO2017084659A1 publication Critical patent/WO2017084659A1/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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • 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
    • F16C33/3837—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages
    • F16C33/3843—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
    • F16C33/3856—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window 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
    • F16C33/3887—Details of individual pockets, e.g. shape or ball retaining means
    • 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
    • F16C39/00—Relieving load on bearings
    • F16C39/02—Relieving load on bearings using mechanical means
    • 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
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • 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
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/44—Hole or pocket sizes
    • 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
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/70—Diameters; Radii

Definitions

  • the invention relates to a rolling bearing cage, which has a plurality of rolling bearing pockets, in particular pockets for receiving balls, wherein the roller bearing cage is guided by the rolling elements.
  • a roller bearing cage can be performed on the bearing inner ring, the bearing outer ring or by the rolling elements of the bearing.
  • Rolling element-guided cages are known, for example, from DE 10 2014 205 051 A1 and from DE 10 2006 057 512 A1. In both cases, these are rolling bearing cages for roller bearings.
  • the invention is therefore based on the object, a roller body guided, in particular suitable for a ball bearing bearing cage relative to the State of the art with regard to friction properties and wear behavior further develop.
  • the roller bearing cage has a plurality of rolling bearing pockets which are dimensioned the same, that is to say in particular have the same pocket diameter.
  • a circle defined by the centers of the rolling body pockets is identical to the pitch circle which is laid through the center points of the rolling bodies, in particular balls, which guide the roller bearing cage.
  • the individual rolling-element pockets of the roller bearing cage also referred to as a bearing cage or cage in short, are separated from one another by webs, on the inside of which retaining projections are located.
  • the retaining projections which are directed radially inwardly from the overall annular rolling bearing cage, can be connected as separate parts to an annular base body of the roller bearing cage.
  • the holding projections are integral parts of the roller bearing cage, which are integrally connected to the rest of the cage.
  • the retaining projections of the bearing cage are located within the pitch circle of the rolling bearing, in particular ball bearing.
  • the two retaining projections which are arranged on opposite sides of a rolling body pocket, have a distance measured radially from the center of the respective rolling body pocket and thus also from the center of the rolling body guided in the rolling body body which is at least 37.5% and in a preferred embodiment at most 47.5 % of the pocket diameter corresponds.
  • a circle formed by the retaining projections and concentric with the center axis of the roller bearing cage and thus also with the axis of rotation of the rolling bearing is smaller than the pitch circle of the rolling element, the radius of the pitch circle being greater than the radius by at least three quarters of the rolling pocket radius of the circle laid by the retaining projections.
  • the Wälz stressestaschen- diameter must correspond at least to the rolling element diameter, said relations are preferably also with respect to the WälzMech devises. This means that the distance measured in the radial direction of the rolling bearing from the center of a rolling element to a holding projection corresponds to at least 37.5% and preferably at most 47.5% of the rolling element diameter.
  • the invention is based on the consideration that imbalances may occur during operation of a roller bearing, which are accompanied by forces between the roller bearing cage and rolling elements.
  • the rolling bearing cage if it is guided by rolling elements, is supported on diametrically opposed rolling elements. If this support is located in areas which, measured in the radial direction, are close to the pitch circle of the rolling bearing, forces acting between individual rolling elements and the roller bearing cage can be generated which are substantially higher than the unbalance forces.
  • the inventive design of the roller bearing cage and the entire bearing provides a force input from the rolling bearing cage into individual rolling elements, which is realized by contacting points, namely retaining projections, far within the pitch circle, namely close to the inner ring of the bearing.
  • the line contacts are the shape of the rolling elements, in particular spherical shape, adapted and aligned substantially parallel to the roller bearing axis. Due to the low-friction design of the contact between the roller bearing cage and rolling elements, the entire rolling bearing has an increased grease service life and a longer bearing life compared to conventional bearings.
  • the rolling bearing according to the invention is suitable for uses that would make necessary an external cooling in conventional bearing structure.
  • the distance measured in the tangential direction between the two opposite holding projections of a rolling body pocket is preferably not more than 70%, in particular not more than 40%, of the pocket diameter.
  • the rolling body pockets each have an open towards the outside, cylindrical portion.
  • This cylindrical portion transitions radially inwardly into a tapered portion on which the retaining projections are formed.
  • the cylindrical section preferably extends radially inwards beyond the center of the rolling body pocket and thus also when the rolling bearing is completed, beyond the center of the rolling body.
  • the rolling bearing cage can be used in particular in a spindle bearing, for example in a machine tool.
  • the rolling bearing is preferably a ball bearing, in particular a deep groove ball bearing or an angular ball bearing.
  • the rolling bearing designed as a ball bearing has a ball rolling groove, which may be formed by an inner ring or directly by a shaft. Instead of balls that roll as rolling elements on the ball track groove, for example, ball rollers or barrel rollers can be used. In all cases, the holding projections of the roller bearing cage are pulled so far inward that they protrude into the ball tracking groove. In other words, the inner diameter of the rolling bearing cage is smaller than the diameter of the bearing inner race measured immediately outside the ball raceway groove.
  • the rolling bearing cage is preferably made of plastic, for example fiber-reinforced plastic.
  • FIG. 2 shows a further view of the arrangement according to FIG. 1,
  • FIG. 3 shows the roller bearing cage of the roller bearing according to FIG. 1 in a perspective view
  • Figure 4 is a diagram of force relationships and geometric relationships on the rolling bearing of Figure 1. Detailed Description of the drawings
  • FIGS. 1 and 2 show, in different views, a detail of a rolling bearing designated overall by the reference numeral 1, namely gellager. Visible are an inner ring 2, a rolling element 3, and a roller bearing cage 4, which is guided by the rolling elements 3 and further, not shown rolling elements.
  • the inner ring 2 has a ball running groove 5, on which the rolling elements 3 roll.
  • An outer ring of the rolling bearing 1, which provides a further ball raceway, is not shown in FIGS. 1 and 2.
  • FIG. 3 shows in isolation the roller bearing cage 4, which is produced in one piece from plastic.
  • rolling bearing cage 4 In rolling bearing cage 4 are rolling elements pockets 6, in each of which a rolling element 3, that is, a ball, is guided. In the circumferential direction, the rolling body pockets 6 are separated from one another by webs 7. Two circumferential edge strips 8 of the rolling bearing cage 4 are connected to each other by the webs 7.
  • the diameter of each rolling element pocket 6 is designated pocket diameter D and is minimally larger than the rolling element diameter.
  • the pocket diameter D corresponds approximately to twice the rolling element radius r.
  • the center M of the rolling element 3, that is, the ball center is identical to the center of the rolling element pocket 6.
  • two sections 9, 10 are distinguishable from one another, namely a cylindrical section 9 and a radially inwardly tapering section 10.
  • the cylindrical section 9 merges directly into the tapering section 10.
  • Both sections 9, 10 are formed by the webs 7.
  • the tapered portion 10 in the form of holding projections 1 1, 12, namely curved, substantially parallel to the roller bearing axis aligned retaining strips, from which define a Wälz Eisen 6 in both circumferential directions.
  • the rolling element 3 contacts both retaining projections 11, 12.
  • a support of the rolling bearing cage 4 on the inner ring 4 or on the associated outer ring, on the other hand, is not provided.
  • a measured in the radial direction distance a between the retaining projections 1 1, 12 on the one hand and the center M of WälzConsequently 6 and the rolling element 3 on the other hand is more than 37.5% of the pocket diameter D and more than 75% of the WälzSystemradius r.
  • the measured in the tangential direction of the rolling bearing cage 4 distance between the retaining projections 11, 12 is denoted by d and is less than 75% of the pocket diameter D.
  • the rolling element radius r corresponds to the sum of the radial distance a between the retaining projections 11, 12 and the center M and a height h measured in the same direction, which is the radial distance between the lowest point of the ball tracking groove 5 and the retaining projections 11, 12 denotes.

Landscapes

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

Abstract

L'invention concerne une cage de palier à roulement (4), en particulier pour un roulement de fusée qui a un nombre de brides de roulement (6) présentant le même diamètre de poche (D), un cercle formé à travers les centres (M) des brides (6) décrivant un cercle partiel. Les brides de roulement (6) sont séparées les unes des autres par des traverses (7), des saillies de retenue (11, 12) étant disposées sur la face intérieure des traverses (7) pour venir en contact avec les roulements (3) et leur distance (a) mesurée dans la direction radiale du centre (M) de la bride de roulement respective (6) correspond au moins à 37,5 % du diamètre de poche (D).
PCT/DE2016/200476 2015-11-17 2016-10-19 Cage de palier à roulement Ceased WO2017084659A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015222658.1 2015-11-17
DE102015222658.1A DE102015222658A1 (de) 2015-11-17 2015-11-17 Wälzlagerkäfig

Publications (1)

Publication Number Publication Date
WO2017084659A1 true WO2017084659A1 (fr) 2017-05-26

Family

ID=57348414

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2016/200476 Ceased WO2017084659A1 (fr) 2015-11-17 2016-10-19 Cage de palier à roulement

Country Status (2)

Country Link
DE (1) DE102015222658A1 (fr)
WO (1) WO2017084659A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114183460A (zh) * 2022-01-10 2022-03-15 中国科学院金属研究所 角接触球轴承保持架、角接触球轴承

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450449A (en) * 1967-07-13 1969-06-17 Skf Ind Inc Rolling bearing assembly
US4019791A (en) * 1975-12-10 1977-04-26 Industrial Tectonics, Inc. Ball bearing retention construction
JPH06173956A (ja) * 1991-07-11 1994-06-21 Ngk Spark Plug Co Ltd 転がり軸受
JPH0949525A (ja) * 1995-05-30 1997-02-18 Ntn Corp 固体潤滑転がり軸受
JP2000205268A (ja) * 1999-01-14 2000-07-25 Tok Bearing Co Ltd ベアリング
DE102006057512A1 (de) 2006-12-06 2008-06-12 Schaeffler Kg Wälzlagerkäfig
DE102010047962A1 (de) 2010-10-08 2012-04-12 Minebea Co., Ltd. Kugellager-Käfig
EP2787229A1 (fr) 2011-11-29 2014-10-08 NSK Ltd. Cage et palier à billes
DE102014205051A1 (de) 2014-03-19 2015-09-24 Schaeffler Technologies AG & Co. KG Wälzlagerkäfig für Kegelrollenlager

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450449A (en) * 1967-07-13 1969-06-17 Skf Ind Inc Rolling bearing assembly
US4019791A (en) * 1975-12-10 1977-04-26 Industrial Tectonics, Inc. Ball bearing retention construction
JPH06173956A (ja) * 1991-07-11 1994-06-21 Ngk Spark Plug Co Ltd 転がり軸受
JPH0949525A (ja) * 1995-05-30 1997-02-18 Ntn Corp 固体潤滑転がり軸受
JP2000205268A (ja) * 1999-01-14 2000-07-25 Tok Bearing Co Ltd ベアリング
DE102006057512A1 (de) 2006-12-06 2008-06-12 Schaeffler Kg Wälzlagerkäfig
DE102010047962A1 (de) 2010-10-08 2012-04-12 Minebea Co., Ltd. Kugellager-Käfig
EP2787229A1 (fr) 2011-11-29 2014-10-08 NSK Ltd. Cage et palier à billes
DE102014205051A1 (de) 2014-03-19 2015-09-24 Schaeffler Technologies AG & Co. KG Wälzlagerkäfig für Kegelrollenlager

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114183460A (zh) * 2022-01-10 2022-03-15 中国科学院金属研究所 角接触球轴承保持架、角接触球轴承
CN114183460B (zh) * 2022-01-10 2025-09-05 中国科学院金属研究所 角接触球轴承保持架、角接触球轴承

Also Published As

Publication number Publication date
DE102015222658A1 (de) 2017-05-18

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