EP2018486A2 - Segment de cage pour un palier à roulement - Google Patents
Segment de cage pour un palier à roulementInfo
- Publication number
- EP2018486A2 EP2018486A2 EP07722401A EP07722401A EP2018486A2 EP 2018486 A2 EP2018486 A2 EP 2018486A2 EP 07722401 A EP07722401 A EP 07722401A EP 07722401 A EP07722401 A EP 07722401A EP 2018486 A2 EP2018486 A2 EP 2018486A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cage
- coupling
- cage segment
- segment
- webs
- 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- Withdrawn
Links
- 230000008878 coupling Effects 0.000 claims abstract description 84
- 238000010168 coupling process Methods 0.000 claims abstract description 84
- 238000005859 coupling reaction Methods 0.000 claims abstract description 84
- 238000005096 rolling process Methods 0.000 claims abstract description 52
- 230000002093 peripheral effect Effects 0.000 claims abstract description 24
- 230000008961 swelling Effects 0.000 claims description 8
- 230000000295 complement effect Effects 0.000 claims description 6
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 229920002530 polyetherether ketone Polymers 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 239000012815 thermoplastic material Substances 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 239000004760 aramid Substances 0.000 claims 1
- 229920003235 aromatic polyamide Polymers 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 230000035882 stress Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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
- F16C33/46—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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
-
- 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
- F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
- F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
- F16C33/4635—Massive or moulded cages having cage pockets surrounding the rollers, 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
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/20—Thermoplastic resins
- F16C2208/36—Polyarylene ether ketones [PAEK], e.g. PEK, PEEK
-
- 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
-
- 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
- F16C2360/00—Engines or pumps
- F16C2360/31—Wind motors
Definitions
- the invention relates to a cage segment for a cage of a rolling bearing, a cage formed therefrom and a rolling bearing with such cage segments.
- the invention will be described with reference to a large roller bearing (with a pitch circle diameter of more than 500mm) for all bearing types.
- Cages for rolling bearings are widely known and serve to provide cage pockets in which rolling elements are held and guided. In the operation of such a rolling bearing, however, it may come to a swelling and / or thermal expansion of the material from which the cage segments are made. This can lead to strong stresses in the cage, because usually the material of the cage or the cage segments expands much more thermally than the rolling bearing usually made of steel. The mechanical stresses can lead to an increase in friction, jamming or even breakage of the cage.
- a cage comprising a plurality of cage segments which are not connected to one another, ie are loosely installed and which are dimensioned such that, when the adjacent stimuli are juxtaposed, a last one and a first one Cage segment remains a gap to accommodate a swell and / or temperature-induced expansion, so that mechanical stresses are avoided.
- Such cages are used in particular in play-free or preloaded bearings for wind turbines.
- the potential gap between the cage segments has the disadvantage that during operation in and between the cage segments due to swelling and expansion higher forces occur, which can lead to plastic deformation or cracking of the plastic cage segments. Also, this can significantly increase friction in the bearing. Higher temperatures and / or wear can occur.
- Object of the present invention is to avoid the disadvantages mentioned above and in particular to provide a cage segment for a cage of a rolling bearing, with the one hand mechanical stresses of a cage formed from the cage segments for a rolling bearing and on the other hand avoided increased wear due to constraining forces can be. Furthermore, it is an object of the present invention to provide a cage with such cage segments and a rolling bearing available. In addition, a cost-effective cage design is provided and reduces both the friction and the weight of the cage become. Also, a segment with sufficient strength and rigidity is to be provided and a satisfactory dimensional stability of the cage segment can be achieved.
- a bearing cage is to be made available, which is particularly suitable for large roller bearings as an alternative to steel bolt cages and thus offers a technically equivalent or even better, but less expensive * solution.
- a cage segment for a cage of a roller bearing.
- the cage segment has at least two circumferential webs extending in the circumferential direction of the cage and at least two connecting webs, wherein the peripheral webs and the connecting webs form at least one pocket for receiving a rolling element.
- the cage segment has a coupling unit which is designed to connect the cage segment to the end face of a further cage segment.
- the cage segment according to the invention allows the construction of a cage for a rolling bearing, in which the cage segments are on the one hand coupled to each other, so that a counter-hammering of the cage segments during operation of the bearing can be avoided.
- a Cages produced according to the invention can be produced less expensively than the steel bolts known from the prior art - studs - cages.
- the coupling unit is designed such that a connection with the further cage segment has a clearance fit.
- the coupling unit is designed so that the clearance has a size to accommodate swelling and temperature expansions of the cage segment.
- the construction of the cage segments is designed so that there is a pocket or cassette around each rolling element, which together give a common larger unit for several rolling elements.
- the cage segment can be described so that there is a wall or a connecting web in the circumferential direction of the cage between each rolling element and these walls or webs on both sides in the circumferential direction with a peripheral ridge or connecting web, which also as a band or Board can be referred to, are connected.
- the size of the cage segments and their number per row of rolling elements is matched to the bearing size, the raceway diameter and the bearing ring geometry.
- per cage segment 2 to 10 pockets are provided for 2 to 10 rolling elements.
- the cage segment according to the invention preferably has a first coupling element with respect to the circumferential direction on a first end side and a second coupling element on a second end side, which are complementary to one another.
- the first and the second coupling element are formed so that they can be positively connected to one another.
- the cage segments are connected to one another or inserted into one another in such a way that a substantially even distribution of play preferably results on the circumference of the cage and the segments can maintain their position even with swelling or temperature expansion.
- first and the second coupling element can be designed as complementary plug-in connection elements, so that similar cage segments can be connected to one another to form a cage.
- the geometry of the segments is preferably adjusted so that the distance between the radial guide diameter of the closed segments and the outer ring raceway of the rolling bearing is carried out sufficiently large to accommodate the possibly additionally occurring diameter magnifications can still. This will be explained in more detail below with reference to a bearing according to the invention.
- the first coupling element has a coupling web protruding in the circumferential direction
- the second coupling element has a coupling recess for receiving the coupling web of a first coupling element of a further cage segment.
- the coupling web may be formed as an extension of one of the peripheral webs.
- the coupling web may be provided with a latching element projecting therefrom, wherein in the region of the coupling recess a Verrastungsaus Principleung is provided, which is engageable behind by the Verrastungselement a first coupling element of another cage segment with respect to the circumferential direction to provide a positive connection.
- the latching element can be designed as a pin, which can be received in a latching opening in the coupling recess of the second coupling element.
- the coupling web can be provided with a latching recess, and wherein in the region of the coupling recess a latching element is provided to engage in the latching recess of a first coupling element of a further cage segment with respect to the circumferential direction in order to create a positive connection.
- the latching element preferably protrudes from the peripheral web in a longitudinal direction of the composite cage. However, the latching element can also protrude radially outward.
- the cage segment is formed with a thermoplastic, in particular with a glass / KohleVAramidverstärkung.
- the thermoplastic may comprise polyether ether ketone having a fiber content of between 10 to 50 percent by weight.
- other plastics can be used.
- a cage for a rolling bearing having a plurality of the cage segments described above, wherein the cage segments are connected to each other frontally by means of the coupling units, so that they form a closed ring.
- the invention is further directed to a rolling bearing with at least one cage segment of the type described above and to a rolling bearing with a cage of the type described above.
- the connecting webs of the cage are spaced from a raceway of an outer race of the rolling bearing in a radial direction of the rolling bearing.
- this spacing at least small expansions of the bearing cage are possible without that it comes to tension of the bearing cage.
- the geometry of the cage segments is adjusted such that the distance or clearance between the radial guide diameter of the closed segments and the outer ring raceway is sufficiently large in order to still be able to absorb the thermally induced increases in diameter.
- radially outwardly facing guide elements are provided on the connecting webs and these in turn are spaced from the raceway of the outer ring in such a way that expansions of the cage relative to the outer ring can be accommodated.
- a clearance fit between the individual ring segments is not mandatory, but advantageous.
- the distance to the outer ring is not mandatory, since, for example, thermally induced expansions can be absorbed by the clearance.
- the inner radius of the raceway of the outer ring and the geometric outer radius of the connecting webs (or the guide elements) are matched to one another such that swelling or temperature-induced increases in diameter of the cage can be accommodated.
- Fig. 1 is a perspective view of a cage segment according to a first embodiment of the invention
- Fig. 2 is an illustration of a detail of a cage, which from the
- Cage segments is formed according to Figure 1;
- FIG. 3 is a perspective view of a cage segment according to another embodiment of the invention.
- FIG. 4 is an illustration of a detail of a cage formed from the cage segments of FIG. 3;
- FIG. 5 shows a further embodiment of a cage segment according to the invention.
- FIG. 6 shows a detailed representation of two interlocking cage segments according to FIG. 5; and 7 shows a further embodiment of a cage segment according to the invention
- FIGS 1 and 2 a perspective view of a cage segment and a representation of a section of a composite of such cage segments cage for a rolling bearing, in particular for a tapered roller bearing, are shown.
- a rolling bearing can be used, for example, to support a rotor of a wind turbine.
- the cage segment 1 has an inner circumferential web 2 and an outer circumferential web 3.
- the inner circumferential ridge 2 here has a smaller radius of curvature than the outer circumferential ridge 3.
- the rolling elements to be introduced here have a conical shape.
- the connecting webs 4 guide elements 6, with which the position of the rolling elements 20 is secured in the pockets 5.
- two guide elements 6 are provided for each adjacent pocket 5, which protrude in the same direction from the connecting webs 4 with respect to the axial direction of the cage to be formed by the cage segments 1.
- the guide elements 6 also serve as support elements in order to support the cage, for example in the case of a temperature-induced expansion, with respect to the raceway of an outer ring.
- a projection 7 is provided in each case, which the cage segment 1 in case of need supported on a (not shown) running surface of the inner ring.
- the outer circumference formed by the ends 6a of the guide elements is less than the circumference of the inner raceway (not shown) to allow for small dimensions of the cage.
- the circumferential webs 2, 3 have two legs 2a, 2b, 3a, 3b, so that they have an L-shaped cross-section in the circumferential direction. In each case one of the legs extends in the radial direction of the cage.
- support elements 8 are provided at regular intervals on the circumferential webs 2, 3, so that a predefined angle, e.g. a right angle, between the legs of the peripheral webs 2, 3 is ensured.
- the illustrated cage segment 1 has four pockets 5, which are formed by five connecting webs 4.
- the two outer connecting webs simultaneously form end faces 9 of the cage segment 1, which in the assembled state are opposite end faces or end faces of further cage segments.
- the outer connecting webs since they each adjoin only one pocket, in each case only two guide elements 6 in order to guide rolling elements in the pocket of the respective cage segment.
- the cage segment 1 has four pockets for rolling elements in the exemplary embodiment shown, but it is also possible for more or fewer pockets and preferably pockets for 2 to 10 rolling elements to be provided.
- two coupling webs 10 are provided, which constitute an extension of the circumferential webs 2, 3.
- the circumferential webs 2, 3 corresponding coupling Ausheue ments 11, can engage in the corresponding coupling webs 10 of another similarly constructed cage segment 1.
- the coupling recess 11 is formed in the embodiment shown in Figure 1 by a taper of the peripheral webs 2, 3.
- the circumferential webs 2, 3 have no L-shaped cross-section in the region of the coupling recesses, ie the legs 2 b, 3 b are missing here.
- latching projections 12 which serve as latching elements, are provided both on the inner circumferential web 2 and on the outer circumferential web 3.
- Verrastungsausappel traditions 13 are provided on the coupling webs, which represent Verrastungskanten for the locking projections 12.
- the latching projections 12 are tapered outwardly in the radial direction and the Verrastungsausappel traditions 13 formed in a corresponding complementary shape. In this way, two similar cage segments can be inserted into each other in the radial direction, so that they are positively coupled with respect to tensile forces in the circumferential direction.
- the tapered shape of the latching projection 12 and the corresponding shape of the latching recess 13 serve to ensure that the cage segments 1 are connected to one another only in one direction and can be released from each other in the opposite direction, thus facilitating the assembly of the cage.
- the geometries of the coupling webs and the coupling recesses are preferably adapted so that the coupling webs can be slidably received in the coupling recesses 11.
- the geometries of the latching projections 12 and the Verrastungsaus supraung 13 are preferably coordinated so that in the latched, ie in each other plugged state is a clearance fit, which allows a displacement of the cage segments 1 against each other in the circumferential direction of the cage by a certain way.
- the clearance fit is dimensioned such that the source and temperature expansions of each cage segment 1 occurring during operation of the rolling bearing are absorbed.
- the clearance fit can be dimensioned so that a clearance of 0.1 to 2% of the circumferential length of the cage segment 1 exists.
- the clearance fit can amount to 1% of the length of the cage segment in the circumferential direction.
- the latching projection 12 in the recess 11 of the first peripheral web 2, and the latching projection 12 of the recess 11 of the second circumferential web 3 each rise in the longitudinal direction L of the rolling elements (not shown) to the outside.
- the latching recesses 13 on the coupling webs 10 are provided opposite one another on the inside of the coupling segments 10 with respect to the cage segment 1.
- FIG. 2 shows a section of a cage for a roller bearing with cage segments 1, as shown in FIG. 1, in an assembled state. It can be seen that the cage segments are connected to each other by plugging together, wherein the cage segments are inserted into each other substantially in circumferential view. If the inner and outer circumferential webs 2, 3 of the individual segments are connected to one another, the respective projection 12 is received in the latching recess 13 with a clearance fit, so that at least one clearance with respect to a pressure but preferably also with respect to a circumferential tension.
- the dimensioning of the cage segments 1 is preferably selected so that at an average ambient temperature or at room temperature, each of the coupling units between the cage segments 1 has a clearance fit in the tensile and compressive directions with respect to the circumferential direction.
- the length of the cage segment 1 is essentially Chen chosen so that is to form a cage for a roller bearing with an integer number of cage segments 1.
- FIG. 2 it can be seen in FIG. 2 how the rolling elements 20 are held in the pockets 5 of the cage segments 1 with the aid of the guide elements 6. This allows operating temperatures of up to 150 ° C to be recorded.
- the cage segment 1 is preferably formed from a thermoplastic material with glass / carbon fiber reinforcement.
- a base material for example, polyether ether ketone having a fiber content between 10 and 50 percent by weight (preferably 15-25 percent by weight) can be provided.
- Other additives such as toughening modifiers and aging inhibitors may also be provided in the material of the cage segment 1.
- the cage or segments formed by the cage segments 1 may be designed differently with respect to the guidance of the rolling elements, i. essentially in any desired combination of inner ring guide, outer ring guide, inner raceway guide, outer race guide and / or rolling element guide.
- inner ring raceway-guided and / or outer ring-guided embodiments are also conceivable.
- FIG. 3 a cage segment 1 according to another embodiment of the present invention is shown in perspective. To describe this embodiment, the same reference numerals are used for the same elements or elements of the same or comparable function.
- the illustrated cage segment 1 accordingly has a first (inner) circumferential ridge 2, a second (outer) circumferential ridge 3, connecting webs 4, pockets 5, guide elements 6, projections 7, support elements 8 and end faces 9.
- the coupling webs 10 are formed as in the embodiment of Figure 1 as an extension of the circumferential webs 2, 3, but instead of Verrastungsaus Principleung 13 each have a pin 15 which protrudes from the coupling web 10 in a direction different from the circumferential direction, in particular perpendicular thereto and serves as a latching element.
- the circumferential webs 2, 3 On the front side 9 located opposite the end face 9 provided with the coupling webs 10, the circumferential webs 2, 3 have correspondingly coupling recesses 11, which are designed to receive the coupling webs 10 of a further cage segment.
- the circumferential webs 2, 3 In the area of the coupling recesses 11, the circumferential webs 2, 3 have a latching recess 16 in the form of a through-hole in order to receive the corresponding pin 15 on the coupling web of a further cage segment.
- the Verrastungsausnaturalung 16 and the corresponding pin 15 of two cage segments 1 are dimensioned in the coupled state so that a clearance fit, ie the respective coupling web 10 can in the recess 11 of the corresponding adjacent cage segment 1 in the game of a plug connection between the pin 15th and the VerrastungsausNFung 16 slide.
- the peripheral webs are also L-shaped with support elements 8, wherein the connecting webs 4 guide elements 6, which are directed in the direction of the corresponding leg of the L-shaped peripheral webs 2, 3.
- the sliding projections 7 indicate accordingly away from the bearing surface of the cage segment 1.
- FIG. 4 shows a section of a cage with cage segments according to FIG. 3 and rolling elements 20 inserted.
- the cage segments are, as shown in Figure 4, connected to each other in a similar manner as the cage segments 1 according to the first embodiment by nesting.
- Fig. 5 shows a further embodiment of a cage segment according to the invention.
- the coupling units are designed differently here than in the embodiment shown in FIG. 3.
- the coupling webs 10 have in this embodiment recesses Verrastungsaus traditions 19, which can engage in latching projections 18 of a further cage segment.
- the latching projections 18 protrude in the longitudinal direction L of the cage segment in each case to the outside.
- Fig. 6 shows a detailed representation of two interlocking cage segments. It can be seen that the latching projection 18 within the latching recess 19 has a certain play in the circumferential direction of the cage segment in order, as mentioned above, to be able to absorb the thermally induced expansions.
- Fig. 7 shows a further embodiment of a cage segment according to the invention.
- the coupling units are asymmetrical here. While in the preceding embodiments both the inner circumferential web 2 and the outer peripheral web 3 always have the coupling webs 10 on one side, in the embodiment shown in FIG. form the outer circumferential ridge 3 a left-side coupling web 10 and the inner peripheral ridge 2 a right-side coupling web 10 Oeweils based on Fig. 7).
- the corresponding coupling recesses are here provided at the outer circumferential web 3 on the right side and on the inner peripheral web 2 on the left side.
- the engagement of the individual cage segments in further cage segments is similar to that already described in connection with FIG.
- the guide surfaces for the rolling elements are formed in different ways, more specifically, they extend in the longitudinal direction of the cage segment substantially continuously and have at their ends in the radial direction still small elevations 6b.
- an idea of the present invention is to connect the cage segments forming the cage of a roller bearing with one another by means of corresponding coupling units.
- the coupling units are designed so that the connection of two cage segments is provided with a clearance. In this way, there is a uniform game distribution over the entire circumference of the cage, so that the cage segments can maintain their respective position even with a swelling and / or temperature expansion. Furthermore, it is thereby possible to substantially prevent or greatly reduce counterblowing of the individual cage segments.
- the coupling geometry between the cage segments is designed so that there is a slight clearance fit, is not subjected to pressure and can release the connection in the circumferential direction on train. In addition, feedback is also possible again.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006022951A DE102006022951A1 (de) | 2006-05-17 | 2006-05-17 | Käfigsegment für einen Käfig eines Wälzlagers |
PCT/DE2007/000852 WO2007131478A2 (fr) | 2006-05-17 | 2007-05-10 | Segment de cage pour un palier à roulement |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2018486A2 true EP2018486A2 (fr) | 2009-01-28 |
Family
ID=38607861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07722401A Withdrawn EP2018486A2 (fr) | 2006-05-17 | 2007-05-10 | Segment de cage pour un palier à roulement |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090208161A1 (fr) |
EP (1) | EP2018486A2 (fr) |
JP (1) | JP2009537003A (fr) |
DE (1) | DE102006022951A1 (fr) |
WO (1) | WO2007131478A2 (fr) |
Families Citing this family (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007009811A1 (de) * | 2007-02-28 | 2008-09-04 | Schaeffler Kg | Mehrteiliger Axialkäfig für ein Großwälzlager |
DE102007048655A1 (de) * | 2007-10-10 | 2008-02-07 | Schaeffler Kg | Käfigsegment eines Kunststoffkäfigs sowie Wälzlager mit dem Kunststoffkäfig |
DE102008053248A1 (de) | 2008-10-25 | 2010-04-29 | Schaeffler Kg | Wälzlagerkäfig |
DE202008017091U1 (de) | 2008-12-24 | 2009-03-12 | Schaeffler Kg | Segmentkäfig |
DE102008062913A1 (de) | 2008-12-24 | 2010-07-01 | Schaeffler Technologies Gmbh & Co. Kg | Segmentkäfig |
DE102009013094B4 (de) | 2009-03-13 | 2018-09-13 | Schaeffler Technologies AG & Co. KG | Schrägscheiben-Schwenklager und Axialkolbenmaschine |
DE102009014276A1 (de) | 2009-03-20 | 2010-09-23 | Schaeffler Technologies Gmbh & Co. Kg | Käfig für ein Wälzlager |
DE102009014779A1 (de) | 2009-03-25 | 2010-09-30 | Schaeffler Technologies Gmbh & Co. Kg | Wälzlagerkäfig |
US8998489B2 (en) * | 2009-06-09 | 2015-04-07 | Schaeffler Technologies AG & Co. KG | Segment rolling bearing, and axial hydraulic pump having the segment rolling bearing |
DE102009037421A1 (de) | 2009-08-13 | 2011-02-17 | Schaeffler Technologies Gmbh & Co. Kg | Käfigsegment für einen Kunststoffkäfig eines Wälzlagers und Wälzlager mit einem solchen Käfigsegment |
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EP2984357B1 (fr) | 2013-04-11 | 2019-08-21 | Aktiebolaget SKF | Roulement avec des éléments roulants pourvus dans une pluralité de segments de cage |
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2006
- 2006-05-17 DE DE102006022951A patent/DE102006022951A1/de not_active Withdrawn
-
2007
- 2007-05-10 WO PCT/DE2007/000852 patent/WO2007131478A2/fr active Application Filing
- 2007-05-10 US US12/300,808 patent/US20090208161A1/en not_active Abandoned
- 2007-05-10 EP EP07722401A patent/EP2018486A2/fr not_active Withdrawn
- 2007-05-10 JP JP2009513542A patent/JP2009537003A/ja active Pending
Non-Patent Citations (1)
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See references of WO2007131478A2 * |
Also Published As
Publication number | Publication date |
---|---|
JP2009537003A (ja) | 2009-10-22 |
WO2007131478A3 (fr) | 2008-06-26 |
US20090208161A1 (en) | 2009-08-20 |
WO2007131478A2 (fr) | 2007-11-22 |
DE102006022951A1 (de) | 2007-11-22 |
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