DE102006044802A1 - Combined sliding ball bearing for supporting shaft in gear construction, has balls and rollers unroll on remaining shoulder surfaces, where bearing is formed as four-point ball bearing, so that running grooves have contact points - Google Patents

Combined sliding ball bearing for supporting shaft in gear construction, has balls and rollers unroll on remaining shoulder surfaces, where bearing is formed as four-point ball bearing, so that running grooves have contact points Download PDF

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Publication number
DE102006044802A1
DE102006044802A1 DE200610044802 DE102006044802A DE102006044802A1 DE 102006044802 A1 DE102006044802 A1 DE 102006044802A1 DE 200610044802 DE200610044802 DE 200610044802 DE 102006044802 A DE102006044802 A DE 102006044802A DE 102006044802 A1 DE102006044802 A1 DE 102006044802A1
Authority
DE
Germany
Prior art keywords
bearing
ball bearing
balls
rollers
ring
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
DE200610044802
Other languages
German (de)
Inventor
Thorsten Dipl.-Ing. Biermann (FH)
Roland Kern
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
Priority to DE200610044802 priority Critical patent/DE102006044802A1/en
Publication of DE102006044802A1 publication Critical patent/DE102006044802A1/en
Ceased legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/49Bearings with both balls and rollers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/58Raceways; Race rings

Abstract

The combined sliding ball bearing (1) has an inner ring (2) and an outer ring (3), which are provided with respective running grooves (4, 5). Rollers (14) and balls (15) are guided between the running grooves in a retainer (16). The balls in the running grooves and the rollers unroll on remaining shoulder surfaces (10-13). The bearing is formed as four-point ball bearing, so that the running grooves have contact points (18-21), where the four point ball bearing has undivided bearing rings.

Description

  • Field of application of the invention
  • The The invention relates to a combined roller ball bearing with a Inside and one Outer ring, with one each Running grooves are provided, between which in a cage guided roles and Unroll balls of different diameter, with the balls Roll in the grooves and rollers on remaining shoulder surfaces.
  • Background of the invention
  • combined Roller ball bearings are already in various embodiments known.
  • For example, in the DE-OS 2 304 389 such a camp described above. That in the drawings 1 to 5 shown bearing has an inner race 10 of L-shaped cross-section, which has a cylindrical outer bearing surface 10a and a bearing surface arranged at a right angle thereto 10b forms. To the race 10 around is an oppositely directed outer race 11 arranged, which also has an L-shaped cross section and a cylindrical outer bearing surface 11a as well as a storage area 11b determines that at a right angle to the bearing surface 11a is arranged and is opposite her. Between the races is an arrangement of alternating rollers 12 and bullets 13 intended. The roles 12 have a slightly larger diameter than the balls 13 and are with their axes parallel to the bearing surfaces 10a and 11a arranged so that they form a roller bearing between these two surfaces. The axial length of the rollers 12 is slightly smaller than the diameter of the balls 13 so that the latter axial forces between the bearing surfaces 10b and 11b able to transfer.
  • adversely It is that the smaller diameter bearing balls in no Groove, but roll on a flat surface. This has the consequence that the bearing balls only axially acting forces, but no radial attacking personnel be able to record. from that results in a lower load rating of the entire bearing assembly. About that In addition, this combined roller ball bearings due to the L-shaped design its bearing rings axial forces record only in one direction.
  • Another combined roller ball bearing is from the DE 41 42 433 C1 previously known. Like from the 1 . 2 and 3 shows, the cage points 4 of the rolling bearing 1 between the roller bags 5 as holding areas each ball pockets 9 on, in which captive balls 10 are arranged as rolling elements. These balls 10 run after 3 in the Wälzbahnen 7 and 8th of the inner and outer ring 2 and 3 , The cage 4 can here at least three, symmetrically distributed over the circumference balls 10 which are in the ball pockets 9 are arranged. By mating roles 6 and bullets 10 as well as by clipping the balls 10 in the bullet pockets 9 This results in an arrangement of different rolling elements. The cage 4 will be between the rings 2 . 3 led the camp so perfectly that he can not slide out sideways.
  • The disadvantage here is that the balls also roll on even treads and so can not transmit axial forces. The transmission of axial forces takes place through the rollers 10 However, this is associated with an increased friction, since the rollers abut with their faces on the edges of the bearing rings grinding. When the part of the rolling bearing cage 4 with the bearing balls 10 is located in the load range, au is a reduction in the load rating given au. In this pre-publication, the bearing balls 10 only to a perfect guidance of the bearing cage 4 intended.
  • A generic combined roller bearings is from the DE 1 898 225 U1 previously known. The camp after the 1 consists of the outer ring 1 , the inner ring 2 and the between the two bearing rings 1 . 2 arranged roles 3 and bullets 4 , The balls 4 roll into the into the two bearing rings 1 . 2 incorporated grooves 5 and 6 and the roles 3 on the shoulders 7 . 8th . 9 and 10 on both sides of the grooves 5 and 6 from. A cage 11 holds the individual rolling elements 3 . 4 in stock. This cage 11 is after 2 alternating with bags 12 . 13 for the roles 3 and for the balls 4 Mistake. While the bags 12 for the roles 3 closed on both sides are the bullet pockets 13 open to one side. This makes it possible to roll with 3 stocked cage 11 from the side into the pre-assembled bearing, ie, the balls 4 were already in a known manner between the two bearing rings 1 . 2 introduced. In order to avoid falling out of the cage during operation, the ball pockets 13 caulked at their open sides in a known manner, ie, by material deformations 15 and 16 the opening is closed. At the cage 11 to 3 in which between two balls 17 three needles 18 are arranged, the holder of the cage 11 through at the open ends of the ball pockets 19 provided elastic tongues 20 , When inserting the cage 11 give the elastic tongues 20 after, so the balls 17 can snap.
  • The disadvantage here is that this combined roller ball bearing has a pressure angle of almost 0 °, so that it can absorb relatively small forces in the axial direction. Also in this generic camp, which is designed primarily for receiving radial forces, the Ku used to fix the cage.
  • Summary of the invention
  • outgoing from the disadvantages of the known prior art is the invention the task is based, a generic combined roller bearings to provide the best possible given load conditions is adjustable in both the axial and in the radial direction and that about it also easy to handle.
  • According to the invention this Task according to the characterizing part of claim 1 in conjunction solved with the preamble by the fact that the ball bearing as a four-point ball bearing is formed so that the grooves two points of contact each exhibit.
  • Four-point contact ball bearings have on the inner ring and on the outer ring two circular arc-shaped each Raceways whose centers of curvature are offset from each other so that the balls at the races Touch radial load in four points. The bearings are for changing, purely axial load or predominant Axial load suitable. Touch it the balls the inner and outer ring only at one point, as in an axially loaded angular contact ball bearing. The balls, which, as already stated above, in particular for receiving of axial forces serve, are arranged in the grooves, while the Rollers that serve to absorb the radial forces on the remaining shoulder surfaces roll. In the bearing structure according to the invention Accordingly, the radial load capacity primarily from the rollers and the axial load capacity adopted primarily from the four-point ball bearing. By This separation of radial and axial load bearing, it is possible through different position and number of rollers and balls the combined Concretely adapt roller roller bearings to the respective load case.
  • Further advantageous embodiments The invention are described in the subclaims.
  • So is provided according to claim 2, that the four-point ball bearing undivided Has bearing rings. The compactly designed bearing rings ensure that The combined roller ball bearing does not fit into its individual parts Transport can decay. About that In addition, the assembly is also the end user by this design Such a bearing simplifies since it is delivered as a captive unit becomes.
  • To Claim 3 is provided that the four-point ball bearing a pressure angle of 35 ° should. This high pressure angle ensures that high axial forces in both Directions can be recorded.
  • To a further feature according to claim 4 it is provided that the rollers and the balls are symmetrical in the Cage arranged are, with one roll of a ball or multiple rolls of multiple balls follow in the circumferential direction. The type of rollers arranged in the cage and Balls are determined by the particular application. Become high radial and slightly lower axial forces are absorbed, so cylindrical rollers are present in the first place, while in the opposite case, primarily balls are arranged.
  • Finally is provided according to a last feature of the invention according to claim 5 that this Combined roller ball bearings for shaft bearings in gearbox construction is used. This is always especially the case when high Strains occur in both axial directions and where a close axial guidance and a small bearing width are required.
  • The Invention will be explained in more detail in the following embodiment.
  • Brief description of the drawings
  • Further Features of the invention will become apparent from the following description and from the drawings, in which an embodiment of the invention is shown in simplified form.
  • It demonstrate:
  • 1 a longitudinal section through an inventively combined roller bearings and
  • 2 a perspective view of circumferentially successively arranged rollers and balls of the bearing in 1 ,
  • Detailed description of the drawings
  • That in the 1 and 2 illustrated roller ball bearings 1 consists of the inner ring 2 and the outer ring 3 around the axis 17 are arranged concentrically with each other. Both the inner ring 2 also the outer ring 3 are with grooves 4 . 5 provided, on both sides of the shoulders 6 . 7 . 8th . 9 are limited. Shoulders 6 and 7 of the inner ring 2 be from the shoulder surfaces 10 and 11 continued, parallel to the bearing axis 17 run. The same is true for the shoulders 12 and 13 of the outer ring 3 too, which is also parallel to the bearing axis 17 run. Between both bearing rings 2 and 3 are rolling elements in the form of rollers 14 and bullets 15 arranged in the common cage 16 are housed.
  • The assembly of the combined roller ball bearing 1 takes place in such a way that initially the undivided bearing rings 2 . 3 be moved eccentrically to each other and in the sickle-like space, the maximum number of balls 15 be filled. Size and number of balls 15 are sized so that you have the inner ring 2 between first and last ball 15 taking advantage of the elasticity of both bearing rings 2 . 3 in the outer ring 3 can bring concentric position. Then the balls 15 evenly distributed on the circumference and the cage 16 can with the roles 14 be used laterally.
  • As in particular from 2 it can be seen, in the exemplary embodiment, the arrangement of the rolling bodies is chosen so that in the circumferential direction a roller 14 behind a ball 15 is arranged, in turn, a role 14 and in turn a ball 15 follows. The raceways for the rollers 14 on the one hand from the shoulder surfaces 10 and 11 of the inner ring 2 and on the other hand from the shoulder surfaces 12 and 13 of the outer ring 3 posed. The balls 15 in turn roll on raceways 4 . 5 designed so that their two centers of curvature are offset against each other, so that the balls 15 at radial load in the points of contact 18 . 19 of the inner ring 2 and the touch points 20 . 21 of the outer ring 3 touch. How out 1 further recognizable, the four-point ball bearing has the pressure lines 22 and 23 on the one hand from the touch points 18 and 21 and on the other hand from the touch points 19 and 20 are limited. The associated pressure angle α is from the radial plane 24 as well as from the printing lines 22 and 23 limited.
  • Of the 1 is further removable that within the roller ball bearing 1 a strict separation of male radial and axial forces is ensured. In a firmly anchored in a housing, not shown outer ring 3 be from the shoulder surfaces 10 . 11 of the inner ring 2 outgoing radial forces over the rollers 14 on the shoulder surfaces 12 and 13 of the outer ring 3 transfer. The balls 15 in contrast, take over the transmission of axial forces in both directions. Will the inner ring 2 according to the arrow acted upon by a force acting from left to right F1, it is from the Berühungspunkt 19 of the inner ring 2 to the point of contact 20 of the outer ring 3 and thus transferring the housing. In the opposite case, which is represented by the second arrow, the transmission of the axial force F2 takes place from the point of contact 18 of the inner ring 2 to the point of contact 21 of the outer ring 3 right up to the case.
  • The The roller ball bearing according to the invention described above becomes particularly used advantageously for the storage of shafts in gearbox construction. By The combination of roller and four-point ball bearings are on tight Space, that is, with a small width, a high radial and axial Load capacity realized. The splitting into radial and axial forces receiving Rolling element makes it possible that the bearing to each application with the respective load cases exactly is adjustable, in particular in the axial direction through the Four-point ball bearing high position accuracy through the low axial play is given. Due to this is one such Bearings with its low friction ratio at high speeds well suitable.
  • 1
    Roller Bearings
    2
    inner ring
    3
    outer ring
    4
    groove
    5
    groove
    6
    shoulder
    7
    shoulder
    8th
    shoulder
    9
    shoulder
    10
    shoulder surface
    11
    shoulder surface
    12
    shoulder surface
    13
    shoulder surface
    14
    role
    15
    Bullet
    16
    Cage
    17
    bearing axle
    18
    point of contact
    19
    point of contact
    20
    point of contact
    21
    point of contact
    22
    pressure line
    23
    pressure line
    24
    radial plane
    α
    contact angle
    F1
    force
    F2
    force

Claims (5)

  1. Combined Roller Ball Bearing ( 1 ) with an interior ( 2 ) and an outer ring ( 3 ), each with an associated track ( 4 . 5 ), between which in a cage ( 16 ) guided roles ( 14 ) and balls ( 15 ) roll with different diameter, the balls ( 15 ) in the grooves ( 4 . 5 ) and the roles ( 14 ) on remaining shoulder surfaces ( 10 . 11 . 12 . 13 ), characterized in that the ball bearing is designed as a four-point ball bearing, so that the grooves ( 4 . 5 ) two touch points each ( 18 . 19 . 20 . 21 ) exhibit.
  2. Combined Roller Ball Bearing ( 1 ) according to claim 1, characterized in that the four-point ball bearing undivided bearing rings ( 2 . 3 ) having.
  3. Combined Roller Ball Bearing ( 1 ) according to claim 1, characterized in that the four-point ball bearing has a pressure angle (α) of 35 °.
  4. Combined Roller Ball Bearing ( 1 ) according to claim 1, characterized in that the rollers ( 14 ) and the balls ( 15 ) symmetrical in the cage ( 16 ) are arranged, wherein a roll ( 14 ) of a ball ( 15 ) or multiple roles ( 14 ) several balls ( 15 ) follow in the circumferential direction.
  5. Combined Roller Ball Bearing ( 1 ) according to claim 1, characterized in that it is used for the storage of shafts in gearbox construction.
DE200610044802 2006-09-22 2006-09-22 Combined sliding ball bearing for supporting shaft in gear construction, has balls and rollers unroll on remaining shoulder surfaces, where bearing is formed as four-point ball bearing, so that running grooves have contact points Ceased DE102006044802A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200610044802 DE102006044802A1 (en) 2006-09-22 2006-09-22 Combined sliding ball bearing for supporting shaft in gear construction, has balls and rollers unroll on remaining shoulder surfaces, where bearing is formed as four-point ball bearing, so that running grooves have contact points

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610044802 DE102006044802A1 (en) 2006-09-22 2006-09-22 Combined sliding ball bearing for supporting shaft in gear construction, has balls and rollers unroll on remaining shoulder surfaces, where bearing is formed as four-point ball bearing, so that running grooves have contact points

Publications (1)

Publication Number Publication Date
DE102006044802A1 true DE102006044802A1 (en) 2008-03-27

Family

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DE200610044802 Ceased DE102006044802A1 (en) 2006-09-22 2006-09-22 Combined sliding ball bearing for supporting shaft in gear construction, has balls and rollers unroll on remaining shoulder surfaces, where bearing is formed as four-point ball bearing, so that running grooves have contact points

Country Status (1)

Country Link
DE (1) DE102006044802A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010038305A1 (en) * 2010-07-23 2012-01-26 Aktiebolaget Skf Rolling bearing assembly with a holding device
CN102562794A (en) * 2012-02-23 2012-07-11 威海利奥泰儆自动化设备有限公司 Wire raceway bearing and manufacturing method thereof
EP2520814A1 (en) * 2011-05-06 2012-11-07 Aesculap Ag Surgical instrument, surgical hand-held tool and surgical drive system
DE102014107681A1 (en) * 2014-06-02 2015-12-03 Robert Bosch Automotive Steering Gmbh MOTOR VEHICLE STEERING WITH AT LEAST ONE BASED WAVE ASSEMBLY
CN105134775A (en) * 2015-10-12 2015-12-09 山东凯美瑞轴承科技有限公司 Hybrid bearing with center regulating function
DE102014218047A1 (en) 2014-09-10 2016-03-10 Schaeffler Technologies AG & Co. KG Combined roller ball bearing
DE102015200299A1 (en) 2015-01-13 2016-07-14 Schaeffler Technologies AG & Co. KG Roller Needle cross journal
DE102016202107A1 (en) * 2016-02-12 2017-02-09 Schaeffler Technologies AG & Co. KG Cage and bearings with a cage
DE102015223531A1 (en) 2015-11-27 2017-06-01 Siemens Aktiengesellschaft Superconducting roller bearing and rolling bearing assembly
DE102016208259A1 (en) 2016-05-13 2017-11-16 Siemens Aktiengesellschaft Electric machine with double rotor arrangement

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1068018A (en) * 1911-01-24 1913-07-22 Henry Stuebner Antifriction-bearing.
US1420852A (en) * 1921-01-07 1922-06-27 Lofstrom Fredrik Ellis Ball and roller bearing
US1982893A (en) * 1934-05-19 1934-12-04 Wilson Odell Antifriction bearing
CH241985A (en) * 1942-07-09 1946-04-15 Alfa Romeo Milano Napoli Sa Rolling bearing.
DE1039790B (en) * 1956-04-30 1958-09-25 Franke & Heydrich K G Single or multi-row rolling bearing
DE1898225U (en) * 1964-05-09 1964-08-06 Skf Kugellagerfabriken Gmbh Roller ball bearings.
DE2304389A1 (en) * 1972-02-08 1973-08-16 Robert Ernest Froggatt Combined thrust and axle roller bearing
DE4142433C1 (en) * 1991-12-20 1993-05-27 Ibo Gesellschaft Fuer Beschaffung Und Absatz Von Industrieguetern Mbh, 8011 Kirchheim, De Combined roller and ball bearing with inner and outer races - is of thin race type with rollers and balls of same dia. and on same race tracks
JP2006144815A (en) * 2004-11-16 2006-06-08 Ntn Corp Roller bearing
JP2006144921A (en) * 2004-11-19 2006-06-08 Nsk Ltd Rolling bearing

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1068018A (en) * 1911-01-24 1913-07-22 Henry Stuebner Antifriction-bearing.
US1420852A (en) * 1921-01-07 1922-06-27 Lofstrom Fredrik Ellis Ball and roller bearing
US1982893A (en) * 1934-05-19 1934-12-04 Wilson Odell Antifriction bearing
CH241985A (en) * 1942-07-09 1946-04-15 Alfa Romeo Milano Napoli Sa Rolling bearing.
DE1039790B (en) * 1956-04-30 1958-09-25 Franke & Heydrich K G Single or multi-row rolling bearing
DE1898225U (en) * 1964-05-09 1964-08-06 Skf Kugellagerfabriken Gmbh Roller ball bearings.
DE2304389A1 (en) * 1972-02-08 1973-08-16 Robert Ernest Froggatt Combined thrust and axle roller bearing
DE4142433C1 (en) * 1991-12-20 1993-05-27 Ibo Gesellschaft Fuer Beschaffung Und Absatz Von Industrieguetern Mbh, 8011 Kirchheim, De Combined roller and ball bearing with inner and outer races - is of thin race type with rollers and balls of same dia. and on same race tracks
JP2006144815A (en) * 2004-11-16 2006-06-08 Ntn Corp Roller bearing
JP2006144921A (en) * 2004-11-19 2006-06-08 Nsk Ltd Rolling bearing

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8926186B2 (en) 2010-07-23 2015-01-06 Aktiebolaget Skf Rolling-element bearing assembly having a retaining device
DE102010038305A1 (en) * 2010-07-23 2012-01-26 Aktiebolaget Skf Rolling bearing assembly with a holding device
DE102010038305B4 (en) * 2010-07-23 2019-09-05 Aktiebolaget Skf Rolling bearing assembly with a holding device
DE102011050193A1 (en) * 2011-05-06 2012-11-08 Aesculap Ag Surgical instrument, surgical handpiece and surgical drive system
EP2706247A1 (en) * 2011-05-06 2014-03-12 Aesculap Ag Surgical instrument, surgical hand-held tool and surgical drive system
EP2520814A1 (en) * 2011-05-06 2012-11-07 Aesculap Ag Surgical instrument, surgical hand-held tool and surgical drive system
US9175723B2 (en) 2011-05-06 2015-11-03 Aesculap Ag Surgical instrument, surgical handpiece and surgical drive system
CN102562794A (en) * 2012-02-23 2012-07-11 威海利奥泰儆自动化设备有限公司 Wire raceway bearing and manufacturing method thereof
DE102014107681A1 (en) * 2014-06-02 2015-12-03 Robert Bosch Automotive Steering Gmbh MOTOR VEHICLE STEERING WITH AT LEAST ONE BASED WAVE ASSEMBLY
DE102014218047A1 (en) 2014-09-10 2016-03-10 Schaeffler Technologies AG & Co. KG Combined roller ball bearing
DE102015200299A1 (en) 2015-01-13 2016-07-14 Schaeffler Technologies AG & Co. KG Roller Needle cross journal
CN105134775A (en) * 2015-10-12 2015-12-09 山东凯美瑞轴承科技有限公司 Hybrid bearing with center regulating function
DE102015223531A1 (en) 2015-11-27 2017-06-01 Siemens Aktiengesellschaft Superconducting roller bearing and rolling bearing assembly
DE102016202107A1 (en) * 2016-02-12 2017-02-09 Schaeffler Technologies AG & Co. KG Cage and bearings with a cage
DE102016208259A1 (en) 2016-05-13 2017-11-16 Siemens Aktiengesellschaft Electric machine with double rotor arrangement
WO2017194352A1 (en) 2016-05-13 2017-11-16 Siemens Aktiengesellschaft Electrical machine having a double rotor arrangement

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