DE102008053361A1 - Bearing device for mounting wire guide roller at shaft, has bearing and drivable turbine element, which drives wire guide roller, where turbine element is directly arranged at component part of bearing - Google Patents

Abstract

The bearing device has a bearing (2) and a drivable turbine element (6), which drives wire guide roller. The turbine element is directly arranged at component part of the bearing in permanent manner. The bearing has a bearing ring (1) that interacts with wire guide roller in rotationally fixed connection. An independent claim is included for a retainer for accommodating rolling elements.

Description

Field of the invention

The The invention relates to a bearing device according to claim 1 for the storage of a wire guide roller on a shaft, a Wire guide roller according to claim 8 and a storage unit according to claim 9 with a wire guide roller and a Wave and finally a cage according to claim 10th

In Rolling mills are used in the production of wire to be machined Walzgut led in wire guide rollers, the a commonly fixed shaft rotatably mounted are. The wires enter at high speed Wire guide rollers, so that on the wire guide roller and thus the bearing unit of the wire guide roller as well the bearing device for supporting the wire guide roller high forces on the shaft, especially strong accelerations acting, which load the bearings of the storage device heavily and significantly reduce the life of the bearings. A common one Replacing the bearings is the rule.

Out The prior art is known with the wire guide roller a turbine element rotatably connect, wherein the turbine element set in rotation by an air, water or oil mist stream is held, so that the wire guide roller itself is also in rotation, if no wire in the wire guide roller is guided. Then kick a wire into the wire guide roll one, the speed difference is small, so the diminished Acceleration or the reduced force on the bearings the storage device extends their life. Yet the bearings of the bearing device are in regular Exchange intervals.

There the turbine element itself is subject to high mechanical loads, An exchange of the turbine element is also common make. Here is the easiest accessibility of the Turbine element and a simplified, correct position mounting the turbine element relative to the two bearings and to the To aim for a wave.

It is known, for example, to provide a bearing device with two axially spaced bearings whose outer bearing rings are each rotatably connected to the wire guide roller, wherein between the two outer bearing rings, the turbine element is arranged, which is rotationally fixedly attached directly to the inner circumferential surface of the wire guide roller. In such a storage device, for example, in the publications DE 27 01 381 A1 . DE 2 327 468 A or WO 2007/128834 A1 is described, an exchange of the turbine element is only possible with a disassembly of both camps. Next shows EP 1 736 254 A1 a bearing device with two bearings, between which a turbine element is arranged, which is arranged by means of a sleeve directly on the inner circumferential surface of the wire guide roller rotationally fixed. Again, a simple replacement of the turbine element is not possible without disassembling both bearings. In the non-rotatable arrangement of the turbine element directly on the inner circumferential surface of the wire guide roller proves to be further disadvantageous that the turbine element has a wide radial distance to the shaft, and that the turbine element makes an enlarged in the axial direction of construction of the bearing device required.

It is also known, the turbine element on an end face form the wire guide roller.

EP 0 052 434 B1 describes a bearing device for supporting a wire guide roller on a shaft, wherein the bearing device comprises a bearing designed as a ball bearing, and a drivable turbine element whose rotation drives the wire guide roller. The turbine element is formed as a section of the wire guide roller; Specifically, the wire guide roller on the end face on a structuring on which a medium is guided under pressure, so that the wire guide roller is driven directly. The end face of the wire guide roller terminates substantially flush with the end face of the bearing, so that the bearing device in the radial direction requires a large amount of space. A further disadvantage is that noises occur when the turbine element is arranged on an outwardly facing surface of the wire guide roller or the bearing. Another disadvantage is that a certain design for the wire guide roller is required. If the turbine element is damaged, replace the wire guide roller with the two bearings as a whole.

DE 26 56 934 A1 also shows a bearing device for supporting a wire guide roller on a shaft, wherein the bearing device comprises two bearing designed as a ball bearing, and a turbine element which is integrally formed on the end face of the wire guide roller and therefore with this.

US 6,280,087 B1 also describes a bearing device for supporting a wire guide roller on a shaft, wherein the wire guide roller comprises an end surface having a structuring, so that the turbine element is formed integrally with the wire guide roller.

Also the publication KR 10 2005/095031 AA (Abstract) describes a wire guide roller having formed on both end faces structures ei a turbine element.

Object of the invention

It The object of the invention is a storage device for a wire guide roller with a space-saving and lightweight accessible arrangement for the turbine element specify.

Summary of the invention

These The object is achieved according to the invention for the beginning said storage device with the features of claim 1 and by a wire guide roller according to claim 8 and by a storage unit according to claim 9 solved. A cage with the features of claim 10 may according to the invention, for example in the bearing device according to claim 1, the wire guide roller be provided according to claim 8 or the storage unit according to claim 9.

The fixed arrangement of the turbine element directly to a section the body of a component of the bearing, in particular at one Section of the body of a bearing ring or a cage of the warehouse, allows a space-saving training of Storage device, and - since the stock anyway on a frequent and easy interchangeability are designed - one easy replacement of the turbine element in case of damage. It in particular is no longer necessary, the wire guide role specifically to design, so that components of the camp, on the body the turbine element is arranged directly for a Plurality of wire guide rollers with different ones Dimensions and configurations may be provided.

is specifically the turbine element on the body of the cage of the Arranged bearing, the turbine element is in radial spatial proximity to the wave from which the medium, which drives the turbine element exits.

Further can be provided that at a camp both the cage the bearing as well as the rotatable with the wire guide roller connected bearing ring each having a turbine element, so that a space-saving arrangement of two in the radial direction cooperating turbine elements results. Complementary or Alternatively, it can be provided that the bearing device two axially spaced bearing each having a turbine element having; For example, the outer bearing ring of the first bearing and the outer race of the second bearing each having a turbine element, wherein the Guiding surfaces of the two turbine elements placed inside each other are, so that in the circumferential direction of the shaft, a guide surface of the first turbine element of a guide surface of the second Turbine elements is followed. Overall, results from the interlocking Turbine elements a space-saving arrangement in the axial direction for the storage device.

The Turbine element may be attached to the relevant body of the component of the bearing by means of a positive, frictional or non-positive attachment to be fixed.

includes the bearing as part of the bearing a bearing ring, with the Wire guide roller is rotatably connected, and the turbine element is preferably arranged on the bearing ring, allowing as direct a forwarding of the movement as possible of the turbine element to the wire guide roller through the non-rotatable connection between the bearing ring and the wire guide roller is possible. The turbine element can in one piece with the Bearing ring be formed, for example by pocket-shaped trained sections that circumscribing the body of the bearing ring are arranged.

Preferably is with regard to the formation of the turbine element on the body the bearing ring provided that turbine element on an end face the bearing ring is attached. The turbine element is as made separately from the body of the bearing ring and at the End face of the body of the bearing ring attached component designed so that no structural changes to the bearing ring are required to the turbine element on the body of the bearing ring to be able to fasten. In particular, the embodiment the turbine element regardless of the design of the Bearing ring. Next can be a turbine element for several bearing rings, even those bearing rings that differ from each other Dimensions have use.

Regarding the attachment of the turbine element to the body of the bearing ring, in particular on the end face of the bearing ring, is preferably provided that the turbine element by means of a groove on the bearing ring is fixed. Such a groove is in the bearing ring, for example designed to accommodate a sealing device can. The Fixing of the turbine element by means of the groove allows replacement and reuse of a turbine element, when the bearing ring is dismantled.

Alternatively or in addition to the arrangement of the turbine element on the body of the bearing ring is provided that the bearing comprises a cage for guiding rolling elements, and that the turbine element is fixed to the cage. The turbine element may be attached to the cage by means of a mold be determined final, frictional or frictional; Furthermore, it can be provided that the turbine element is fixed to the body of the cage by means of a groove in the body of the cage. Although the cage rotates relative to the rotatably connected with the wire guide roller bearing ring, however, for example, in a preloaded bearing, the rotation of the cage on the non-rotatably connected to the wire guide roller bearing ring so that the cage, if a turbine element is attached to this, and the turbine element is driven, the wire guide roller in rotation or hold in rotation and thereby can drive.

Preferably is provided with regard to the design of the cage, the turbine element is one of an end face of the Cage protruding guide surface comprises. Leave it the end face of the cage for the Take advantage of the drive of the wire guide roller, such as that on the end face of the cage, about the body circulating the cage, an annular turbine element is arranged.

Regarding the formation of the guide surface of the turbine element The end face of the body of the cage is preferably provided that the baffle with the body of the cage is formed in one piece. Such protruding guide surfaces can be applied to cages made, for example, of molded parts, specially made of plastic or sheet metal parts, are produced, slightly cut free and as tabs at an angle to the rest Turn off the molded part. This corresponds to a material thickness in the range the tab substantially the material thickness of the molding.

Cages for guiding rolling elements in a bearing are known from the prior art, wherein the respective cage comprises a body with a lateral surface, which has a receptacle for a rolling elements, and an end face which is adjacent to the lateral surface and substantially below a right Angle of the lateral surface goes off. It is known to provide on the lateral surface structuring, for example in the form of grooves, which allow a promotion of lubricants in the receptacle for the rolling elements. For example, the publications describe DE 1 575 500 A . JP 02072219 AA (Abstract); JP 08177865 AA (Abstract) or JP 2006097699 AA (Abstract) Cages with a structuring of the lateral surface, which substantially the promotion of lubricant along the lateral surface to the located in the lateral surface receptacle for the rolling elements. Such, limited to the lateral surface structuring can develop the effect of a turbine element when the fluid medium is substantially tangential to the lateral surface.

Cages are also known from the prior art, which in addition to the structuring of the lateral surface also have a structuring of the end face. For example, describes WO 94/07046 A1 describes a cage whose end face has four recesses circumferentially, which are each formed in a circle segment. Each of the four wells is separated by a portion having a substantially planar surface. A jet of fluid medium directed towards an ascending portion of the circular segment-shaped portion and thus impinging tangentially on both the mantle and end surfaces of the cage, drives this cage to rotate. As another example describes DE 10 2005 008 668 A1 a cage, on whose end face recesses are provided, which are delimited by a substantially vertical surface to a section with a smooth end face. Also on this cage, a jet of a fluid medium, which tangentially meets the face, unfold a cage-driving effect.

One Such, known in the art in principle Cage with a structuring having fins on the mantle or end face of the body of the cage, can thus basically be used as a drive a wire guide roller in a bearing of a bearing device for Storage of the wire guide roller on a shaft, wherein a Ray of a fluid medium substantially tangential to the Directed front or lateral surface of the cage is. Is the structuring having the fins especially limited to the lateral surface, In particular, it is preferable to provide that section of the Lateral surface with structuring the bearing with the cage protrudes axially, so that the jet with the fluid medium past the bearing the structuring on the lateral surface of the cage.

The mentioned above by way of example, known from the prior art Structuring on the mantle or mantle and end face a cage are for an effective drive of the cage little suitable.

Preferably, it is provided for the formation of the cage that on the end face a guide surface of the turbine element is formed. In this case, a surface of an area element projecting from the adjoining end face at an angle is referred to as a guide surface, wherein an extension of the surface element in the circumferential direction of the end face is at most as large as the extent of a web in the circumferential direction, wherein a web separates adjacent seats for the rolling elements. An axial extension of a guide surface is larger, preferably significantly larger than the extension of the guide surface in the circumferential direction. Such structuring of the end face of the cage allows the formation of a plurality of guide surfaces on the end face of the cage, which allow a particularly effective drive as a component of the turbine element by a tangentially directed to the guide surfaces jet of the fluid medium. It is understood that the guide surfaces need not be limited to the end face of the cage, but can also spread to the adjacent lateral surface. The turbine element with the guide surfaces can be made structurally separated from the cage and is later attached to the end face of the body of the cage, for example by means of positive, force or frictional engagement.

Preferably is the guide surface of the turbine element than from the carcass formed of the cage projecting tab, so that the turbine element formed integrally with the cage.

Especially is preferred in terms of the design of the cage provided that the body of the cage consists of a molded part, in particular from a bleach or plastic molding is, and that a material thickness in the region of the tab at most essentially corresponds to the material thickness of the molded part. The Lug and thus the guide surface of the turbine element leaves can be very easily trained as a cut blank from the molding. Due to the small material thickness can be several, the body the cage circumferential tabs as fins of the turbine element.

Further Advantages and features of the invention will become apparent from the dependent Claims and from the description of exemplary embodiments.

The Invention will be described below with reference to the appended Drawings described and explained in detail.

Brief description of the drawings

1 shows a partially sectioned, schematic fragmentary view of a first embodiment of a bearing device according to the invention in an embodiment of a wire guide roller according to the invention in an embodiment of a storage device according to the invention for the wire guide roller on a shaft,

2 shows a plan view of an end face of an embodiment of a cage according to the invention,

3 shows a side view of the cage 2 , and

4 shows a detail of a perspective view of a two-th embodiment of a cage according to the invention.

Detailed description the drawing

1 shows a bearing device for supporting a wire guide rollers, not shown, on a shaft, not shown, wherein the bearing device as an outer bearing ring 1 one as a rolling bearing 2 formed part of the warehouse.

The bearing ring 1 is rotationally fixed to the wire guide roller, not shown, for example by means of press fit, attached. The rolling bearing 2 includes in addition to the outer bearing ring 1 an inner bearing ring 3 , which is rotatably mounted on the shaft, not shown, and rolling elements 4 in a cage 5 are guided.

The bearing device further comprises a drivable turbine element 6 , the non-rotatably on the outer bearing ring 1 is fixed, and whose rotation drives the wire guide roller, in particular the wire guide roller is rotated or held in rotation.

The turbine element 6 is directly on the outer bearing ring 1 firmly arranged. In particular, the turbine element 6 firmly on a face 7 the body of the outer bearing ring 1 attached. For this purpose, the turbine element 6 a fixing section 8th on the front of the face 7 rests and on the face 7 is glued. The attachment section 8th goes into a Klemmkeder 9 over, in one on the inner lateral surface 10 of the outer bearing ring 1 arranged groove 11 is trapped. By means of the groove 11 and the Klemmkeder 9 is the turbine element 6 on the outer bearing ring 1 attached. The groove 11 is usually provided for receiving a portion of a sealing device and is not specifically for attachment of the turbine element 6 been trained.

The turbine element 6 is designed as a circular ring, on the inner circumferential surface 12 baffles 13 are arranged, with the fins 13 have a plan view in plan approximately rectangular, substantially square outline. The turbine element 6 is designed as a circular blended sheet metal blank, in the previously to form a guide surface 13 three perpendicular cut lines were inserted so that the guide surface 13 is formed by bending over the remaining, fourth line. The turbine element 6 sits on the frontal surface 7 of the outer bearing ring 1 on.

A directed jet of a fluid medium, such as water, compressed air or oil mist, on the fins 13 of the turbine element 6 on occurs, sets the turbine element 6 in rotation, leaving the outer bearing ring 1 and that the wire guide roller is also rotated or held in rotation.

It is understood that the turbine element 6 does not have to be designed as a sheet metal blank. The turbine element 6 may for example consist of plastic instead of sheet metal and by injection molding to the end face 7 of the first bearing ring 1 be formed. It is further understood that the fins 13 of the turbine element 6 do not have to have rectangular shape in plan view. The fins 13 can in plan view along an imaginary axis 14 be curved, so that a convex guide surface 13 arises. The fins 13 may in particular have pockets, in particular pockets with a sectionally spherical inner surface.

It is further understood that the turbine element 6 can be designed so that there is the gap 15 between the outer bearing ring 1 and the inner bearing ring 3 covers. It is further understood that in the turbine element 6 also a sealing device for the bearing 2 structurally integrated, wherein the sealing device otherwise, for example, in the groove 11 would be attached.

2 shows an end face 16 a cage 17 as part of a bearing of a bearing device for supporting a wire guide roller, not shown, on a shaft, not shown, wherein on an end face 16 baffles 13 a turbine element 6 are provided, which protrude substantially perpendicularly from the surface. The turbine element 6 is designed as an injection molded part and on the frontal surface 18 ( 3 ) of the body of the cage 17 molded, so that the turbine element 6 on the body of the cage 17 is fixed.

The fins 13 are arranged at an angle of approximately 45 ° with respect to a radial direction and curve with increasing radial distance in the circumferential direction, so that blades are formed.

3 shows the cage 17 partially in a side view. The cage 17 is designed as a two-piece snap cage for receiving spherical, not shown rolling elements, wherein only one of the two parts of the cage 17 is shown. It can be seen that the fins 13 of the turbine element 6 essentially perpendicular to the body of the cage 17 , in particular substantially perpendicularly from the frontal surface 18 of the cage 17 , stand out. It can further be seen that an extension of a guide surface 13 in the circumferential direction is less than an extension of a web 19 , where the bridge 19 two adjacent shots 20 . 21 separates. It can also be seen that an extension in the axial direction of the guide surface 13 is greater than the extension of the guide surface 13 in the circumferential direction.

In a mounting position are the fins 13 in the axial direction over the cage 17 as well as over the bearing into which the cage 17 is installed, before, so that a jet of fluid medium, which is directed substantially tangentially to the end face of the bearing, the guide surfaces 13 meets and the cage 17 set in rotation. The cage 17 is installed in the bearing under bias, so that the rotating cage also sets a bearing ring of the bearing in rotation, said bearing ring in turn is in rotationally fixed connection with the wire guide roller.

It is understood that the turbine element 6 may also be formed as a sheet metal part, which on the frontal surface 18 the body of the cage 17 frictionally, positively or non-positively fixed, for example by means of a riveting, a weld or a bond.

4 shows a detail of a perspective view of another cage 22 whose body consists of two substantially symmetrical halves which are fastened together, each half being made as a molded part of sheet metal or plastic. The cage has two by a bridge 19 separate recordings 20 . 21 for rolling elements, not shown, with the two half of the cage 22 through a riveting 23 in the area of the footbridge 19 are joined together. Each of the two halves is formed from a sheet metal or plastic blank in which the recordings 20 . 21 are stamped as hemispherical stampings.

On one of the two halves is a guide surface 13 adjacent to the recording 21 . 20 trained in the manufacture of half of the cage 22 partially cut and finally substantially perpendicular to the adjacent surface of the body of the cage 22 was turned off. The pictures 20 . 21 are in a lateral surface 23 the body of the cage 22 formed, in which also the joining plane 24 the two halves of the cage 22 lies. The fins 13 are with the body of the cage 22 formed in one piece and are substantially perpendicular over an end face 26 above. The fins 13 are there as from the body of the cage 22 protruding tabs 27 that is, as partially cut away, from the cage's cage 22 freestanding sections of the body of the cage 22 , educated.

The tabs 27 have a plan view in approximately rectangular outline and go at a corner in the lateral surface 24 the body of the cage 22 above. The tabs 27 pointing in the circumferential direction tion an extension, for example, a material thickness, on, which is significantly less than the extension of the web 19 in the circumferential direction. In particular, the material thickness in the region of the tab corresponds 27 essentially a material thickness of the molding from which each of the halves of the body of the cage 22 emerged. Next is the axial extent of each of the tabs 27 significantly larger than the extension of the tab 27 in the circumferential direction, so that the tabs 27 the fins 13 of the cage 22 form and with the body of the cage 22 are formed in one piece.

The cages described above 17 . 22 are provided as components of a bearing, not shown, wherein the bearing is part of a bearing device for supporting a wire guide roller on a shaft, not shown.

1

outer bearing ring

2

roller bearing

3

internal bearing ring

4

rolling elements

5

Cage

6

turbine element

7

Face of the outer bearing ring 1

8th

attachment section

9

Klemmkeder

10

inner circumferential surface of the outer bearing ring 1

11

groove

12

inner Lateral surface of the turbine element

13

baffle

14

center line

15

gap

16

Face of the cage 17

17

Cage

18

frontal surface of the cage body 17

19

web

20

admission

21

admission

22

Cage

23

rivet joint

24

Lateral surface of the cage 22

25

joining plane

26

Face of the cage 22

27

flap

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• DE 2701381 A1 [0005]
• - DE 2327468 A [0005]
• WO 2007/128834 A1 [0005]
• - EP 1736254 A1 [0005]
• - EP 0052434 B1 [0007]
• - DE 2656934 A1 [0008]
• - US 6280087 B1 [0009]
• - KR 102005/095031 AA [0010]
• - DE 1575500 A [0023]
• JP 02072219AA [0023]
• - JP 08177865 AA [0023]
• - JP 2006097699 AA [0023]
• WO 94/07046 A1 [0024]
• - DE 102005008668 A1 [0024]

Claims (13)

Bearing device for supporting a wire guide roller on a shaft, comprising a bearing ( 2 ), and a drivable turbine element ( 6 ) whose rotation drives the wire guide roller, characterized in that the turbine element ( 6 ) directly on a component of the warehouse ( 2 ) is fixed. Bearing device according to claim 1, characterized in that the bearing ( 2 ) a bearing ring ( 1 ), which is in rotationally fixed connection with the wire guide roller, and that the turbine element ( 6 ) on the bearing ring ( 1 ) is arranged. Bearing device according to claim 2, characterized in that turbine element ( 6 ) on an end face ( 7 ) of the bearing ring ( 1 ) is attached. Bearing device according to claim 2 or 3, characterized in that the turbine element ( 6 ) by means of a groove ( 11 ) on the bearing ring ( 1 ). Bearing device according to one of claims 1 to 4, characterized in that the bearing a cage ( 17 ; 22 ) for guiding rolling elements, and in that the turbine element ( 6 ) on the cage ( 17 ; 22 ) is attached. Bearing device according to claim 5, characterized in that the turbine element ( 6 ) one of an end face ( 16 ; 26 ) of the cage ( 17 ; 22 ) projecting guide surface ( 13 ). Bearing device according to claim 6, characterized in that the guide surface ( 13 ) with the body of the cage ( 22 ) is formed in one piece. Wire guide roller comprising a bearing device according to any one of claims 1 to 7 for storage on a Wave. Bearing unit comprising a wire guide roller according to claim 8, a shaft, and a supply of a medium, the turbine element ( 6 ) drives. Cage for receiving rolling elements, comprising a body with a lateral surface ( 24 ), which is a recording ( 20 . 21 ) for a rolling elements, and an end face ( 26 ), whereby at the end face ( 26 ) a guide surface ( 13 ) of a turbine element ( 6 ) is trained. Cage according to claim 10, characterized in that the guide surface ( 13 ) than from the body of the cage ( 22 ) protruding tab ( 27 ) is trained. Cage according to claim 10 or 11, characterized in that the body of the cage ( 22 ) is formed from a molded part, in particular from a bleach or plastic molded part, and that a Mate rialdicke in the region of the tab ( 27 ) corresponds at most substantially to the material thickness of the molded part. Use of a cage with a baffles having structuring on the mantle or end face the body of the cage, as a drive of a wire guide roller in a bearing of a bearing device for supporting the wire guide roller on a shaft, wherein a jet of fluid medium substantially tangential to the face or lateral surface of the cage is directed.