DE102015200294A1 - ferrule union - Google Patents

Abstract

The invention relates to a mounting arrangement of a rolling bearing (1) with a rotatable (3) and a stationary component (2), wherein the rolling bearing (1) has a bearing inner ring (4) and a bearing outer ring (5) and a plurality of between the bearing inner ring (4 ) and the bearing outer ring (5) arranged rolling bodies (6, 7, 18) for the radial and axial bearing comprises. According to the invention, a multiplicity of axially extending through bores (8, 15) are present in both bearing rings (4, 5), and a countersink (9) is provided on at least one bearing ring (4, 5) on at least one side of the through bores (8, 15) ), wherein in at least one countersink (9) a spacer ring (10, 11, 16, 17) is arranged.

Description

Field of the invention

The invention relates to a mounting arrangement of a rolling bearing with a rotatable and a stationary component. The rolling bearing comprises a bearing inner ring and a bearing outer ring and a plurality of arranged between the bearing inner ring and the bearing outer ring rolling elements for the radial and axial bearing. In both bearing rings a plurality of axially extending through holes are present. At least one bearing ring on at least one side of the through holes a reduction is present.

Background of the invention

In the JP 2012-193859 A discloses a bearing comprising an outer ring, an inner ring and arranged therebetween rows of rolling elements. In the inner ring and in the outer ring holes with countersinks are present in which short screws are introduced. Through the use of short and far sunk screws while the bearing rings may be less compressed during screwing compared to the prior art, but this can lead to a low bias especially after subsidence in the screw.

Object of the invention

Object of the present invention is therefore to provide an improved mounting arrangement of a rolling bearing, which represents a more advantageous relation between helical bias and deformation of the bearing rings.

Description of the invention

To achieve the object of the invention specified in claim 1 mounting arrangement is proposed. Optional advantageous embodiments of the invention arise wholly or partly from the dependent claims.

The fastening arrangement according to the invention is characterized in that a spacer ring is arranged in at least one countersink. The spacer ring preferably has a spacer ring length which is greater than the wall thickness of the spacer ring. The spacer ring may be formed in particular as a sleeve, a pipe or a socket. This is to achieve the goal that the deformation of the bearing rings due to the screw force does not affect the preload in the rolling contact and the screws have a sufficient length so that when subsidence, the screw maintains the required biasing force.

According to an advantageous embodiment, the holes in each bearing ring each have at most one countersink with a spacer ring arranged therein. This means that either a reduction is present either in both bearing rings, in each of which a spacer ring is arranged or that a spacer ring is present only in a bearing ring.

In one embodiment according to the invention, the bores in one of the bearing rings each have two counterbores with a spacer ring arranged in each countersink. It is useful if the other bearing ring has a different number of spacers in all holes. There are thus several possibilities of arranging spacer rings. For one thing, the bearing outer ring could have two countersinks, each with a spacer ring and the bearing inner ring no spacers. Another possibility is when the bearing inner ring as well as the bearing outer ring has two countersinks, each with a spacer ring. Furthermore, it would be possible if the bearing inner ring has two and the bearing outer ring no spacers in the respective intended reductions.

In a further embodiment according to the invention, the bores in each of the bearing rings each have a countersink and in the other bearing ring in each case two counterbores with a spacer ring arranged in each countersink. For example, the bearing inner ring has two and the bearing outer ring on a countersink with the spacers contained therein. Conversely, this is also possible, so that the bearing inner ring has only one and the bearing outer ring two spacers.

Furthermore, it is advantageous if in each case a screw is inserted, the clamping length in the bearing ring is shorter than the sum of the spacer ring lengths in the respective bearing ring.

In an expedient embodiment, a spacer ring and / or a screw head in the countersink flush with the bearing ring. This means that the introduced in the bearing rings reductions not only need to be used for the spacers, but that in the reduction of the screw head can be arranged. It is also possible that in a reduction, a spacer ring and a screw head are arranged so that the screw head is flush in the countersink with the bearing ring. Otherwise, the screw head can lie flush on the bearing ring and complete the introduced in the reduction spacer ring flush with the bearing ring.

According to the invention, the spacer ring preferably in any embodiment of a metallic material having an E-modulus of at most 210 kN / mm ² at 20 ° C. The E-modulus of the spacer ring is preferably in the range of 110 kN / mm ² to 210 kN / mm ² . The spacers consist of an elastic material, in particular a metallic material. Furthermore, the spacers could also consist of plastic.

Furthermore, it is advantageous if the screw connection according to the invention is used for rolling bearings which are designed with two rows of rolling elements serving for axial bearing and with a row of rolling elements serving for radial bearing. An example of this is a rotary table bearing, which is offered by the applicant under the name "axial radial bearing YRT".

Also according to the invention it is when the rolling bearing is designed as a double-row oblique roller or angular contact ball bearings. Angular contact ball bearings and tapered roller bearings are available in innumerable varieties in the prior art. The Applicant offers these in her catalog in a large variety. They can be found, for example, under the designations "angular contact ball bearings 30 to 38" and "axial tapered roller bearings AXS". There are also references to bearings that come through design configurations for the mounting arrangement in question, such as in the DE 10 2011 005 725 A1 or in the DE 10 2011 002 898 A1 ,

Brief description of the drawings

Further details, features, combinations of features and effects on the basis of the invention will become apparent from the following description of preferred exemplary embodiments of the invention and from the accompanying drawings. These show in:

1 an embodiment of a mounting arrangement of a rotary table bearing with three spacers,

2 a further embodiment of a fastening arrangement of a rotary table bearing with a spacer ring,

3 an embodiment of a mounting arrangement of a tapered roller bearing with four spacers.

Detailed description of the drawings

In the 1 is an exemplary embodiment of the mounting arrangement of a rolling bearing 1 with a fixed one 2 and with a rotatable component 3 shown in cross section. The rolling bearing 1 , a so-called rotary table bearing, comprises a bearing inner ring 4 and a bearing outer ring 5 , as well as two rows of rolling elements for axial bearing 6 axially above and below the bearing outer ring 5 are arranged, and a series of rolling elements for radial bearing 7 between 5 and bearing inner ring 4 centered on the inner circumference of the bearing outer ring 5 is arranged. The bearing outer ring 5 has a continuous and fixed component 2 ending hole 8th on. In the hole 8th of the bearing outer ring 5 are two subsidence 9 introduced, in each case a spacer ring 10 . 11 located. Both spacers 10 . 11 close in the illustrated embodiment flush with the bearing outer ring 5 from. The spacer ring 11 Ideally, this is above the bearing outer ring in the unmounted state 5 in that the bearing outer ring 5 with correct screw preload on the stationary component 2 is applied. That means the spacer ring 11 by tightening the bearing outer ring 5 with the fixed component 2 is compressed. In the hole 8th is also a screw 12 inserted, the screw head 13 directly on the first spacer ring 10 lies and flush with the bearing outer ring 5 concludes. The spacer rings 10 . 11 in the bearing outer ring 5 have the same distance spacer lengths L10, L11 and the same wall thicknesses b here. The inserted screw 12 has a clamping length L in the bearing outer ring 5 , which is shorter than the sum of the spacer ring lengths L10, L11.

The bearing inner ring 4 according to 1 parallel to the hole 8th in the bearing outer ring 5 one through the bearing ring 5 and through an intermediate piece 14 , also called wave washer, going and in the rotatable component 3 ending hole 15 on. The intermediate piece 14 is a part of the bearing inner ring 4 and has raceways for the rolling elements for axial bearing 6 on. In the bearing inner ring 4 is in the hole 15 a cut 9 on the opposite side of the intermediate piece 14 and the rotatable member 3 arranged. In the sink 9 are a spacer ring 16 as well as directly on the spacer ring 16 abutting screw head 13 from the one in the hole 15 inserted screw 12 admitted. The screw head 13 closes in the present embodiment in the reduction 9 flush with the bearing inner ring 4 from. As already in the bearing outer ring 5 is also in the bearing inner ring 4 the clamping length L of the screw 12 shorter than the spacer ring length L16. It is advantageous that the compressed material of the bearing rings 4 . 5 not in the plane of the rolling elements 6 . 7 lies. The geometric changes of the bearing rings 4 . 5 as a result of the screwing are thus in the area of the screw and not in the area of the rolling elements 6 . 7 , The intermediate piece 14 can also be omitted by constructive embodiments of the other components.

The 2 is different too 1 only in terms of drilling 8th . 15 and the spacers disposed therein 10 . 11 . 16 , The hole 8th of the bearing outer ring 5 has two subsidence 9 on. In the sink 9 to the stationary component 2 there is a spacer ring 10 arranged. In the present embodiment is in the other reduction 9 of the bearing outer ring 5 the screw head 13 the screw 12 introduced so that this screw head 13 in the sink 9 flush with the bearing outer ring 5 concludes. The screw head 13 However, it could also continue to sink 9 be sunk. The clamping length L of the screw 12 in the bearing outer ring 5 is shorter than the spacer ring length L10. Due to the shorter screws, settlement effects can have a greater effect on the preload force of the screws, wherein the elastic spacers 10 . 11 . 16 counteract this effect. In the bearing inner ring 4 is a cut 9 present, in which the screw head 13 , from the into the bearing inner ring 4 introduced screw 12 , is introduced. The one in the sink 9 seated screw head 13 closes flush with the bearing inner ring 4 from.

In the 3 is a further inventive mounting arrangement of a rolling bearing 1 with a fixed one 2 and with a rotatable component 3 shown in cross section. The rolling bearing 1 comprising a bearing outer ring 5 , a bearing inner ring 4 and interposed two rows of roller-shaped rolling elements 18 , is designed as a double row tapered roller bearing. The bearing outer ring 5 is on the stationary component 2 by means of a screw 12 attached. The screw 12 is in one through the bearing outer ring 5 continuous and in the stationary component 2 ending hole 8th inserted. The hole 8th in the bearing outer ring 5 indicates from both sides in each case a reduction 9 on. In the sink 9 on the stationary component 2 is present, is a spacer ring 10 arranged. In the other cut 9 the bore 8th are another spacer ring 11 and the screw head 13 the screw 12 flush with the bearing outer ring 5 concludes, inserted. The clamping length L of the screw 12 is also shorter here than the sum of the spacer ring lengths L10, L11. The bearing inner ring 4 has a continuous and rotatable component 3 ending hole 15 on. In the hole 15 are as well as the bearing outer ring 5 two subsidence 9 arranged. In the sink 9 to the rotatable component 3 there is a third spacer ring 16 admitted. In the opposite lowering 9 are a fourth spacer ring 17 and the screw head 13 , from in the hole 15 inserted screw 12 , brought in. The clamping length L of the screw 12 in the hole 15 is shorter than the sum of the spacer ring lengths L16, L17. When unassembled, the spacers are located 10 . 16 to the respective bolted component 2 . 3 over, hence the clamping force of the screw 12 only over the spacer rings 10 . 16 and not over the bearing ring 5 . 4 into the clamping surface in the bearing ring 5 . 4 is initiated.

LIST OF REFERENCE NUMBERS

1

 roller bearing

2

 Fixed component

3

 Rotatable component

4

 Bearing inner ring

5

 Bearing outer ring

6

 Rolling elements for axial bearing

7

 Rolling elements for radial bearing

8th

 Bore bearing outer ring

9

 reduction

10

 First spacer ring

11

 Second spacer ring

12

 screw

13

 screw head

14

 Intermediate piece (wave washer)

15

 Bore bearing inner ring

16

 Third spacer ring

17

 Fourth spacer ring

18

 Roll-shaped rolling element

19

 L clamping length screw

20

 L10 Spacer ring length of the first spacer ring

21

 L11 Spacer ring length of the second spacer ring

22

 L16 Spacer ring length of the third spacer ring

23

 L17 Spacer ring length of the fourth spacer ring

24

 b Wall thickness of the spacer ring

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• JP 2012-193859 A [0002]
• DE 102011005725 A1 [0013]
• DE 102011002898 A1 [0013]

Claims (10)

Mounting arrangement of a rolling bearing ( 1 ) with a rotatable ( 3 ) and a fixed component ( 2 ), the rolling bearing ( 1 ) a bearing inner ring ( 4 ) and a bearing outer ring ( 5 ) and a plurality of between the bearing inner ring ( 4 ) and the bearing outer ring ( 5 ) arranged rolling elements ( 6 . 7 . 18 ) for the radial and axial bearing, wherein in both bearing rings ( 4 . 5 ) a plurality of axially extending through holes ( 8th . 15 ) and at least one bearing ring ( 4 . 5 ) on at least one side of the through holes ( 8th . 15 ) a reduction ( 9 ) is present, characterized in that in at least one reduction ( 9 ) a spacer ring ( 10 . 11 . 16 . 17 ) is arranged. Fastening arrangement according to claim 1, characterized in that the bores ( 8th . 15 ) in each bearing ring ( 4 . 5 ) at most one reduction ( 9 ) with a spacer ring ( 10 . 11 ) exhibit. Fastening arrangement according to claim 1, characterized in that the bores ( 8th . 15 ) in one of the bearing rings ( 4 . 5 ) two subsidence ( 9 ) with one in each reduction ( 9 ) arranged spacer ring ( 10 . 11 ) exhibit. Fastening arrangement according to claim 3, characterized in that the other bearing ring ( 5 . 4 ) in all holes ( 15 . 8th ) one of one different number of spacers ( 16 . 17 ) having. Fastening arrangement according to claim 1, characterized in that the bores ( 8th . 15 ) in one of the bearing rings ( 4 . 5 ) one reduction each ( 9 ) and in the other bearing ring ( 5 . 4 ) two subsidence ( 9 ) with one in each reduction ( 9 ) arranged spacer ring ( 10 . 11 . 16 ) exhibit. Fastening arrangement according to one of the preceding claims, characterized in that in the bores ( 8th . 15 ) one screw each ( 12 ) whose clamping length (L) in the bearing ring ( 4 . 5 ) is shorter than the sum of the spacer ring lengths (L10, L11, L16, L17) in the respective bearing ring ( 4 . 5 ). Fastening arrangement according to one of the preceding claims, characterized in that a spacer ring ( 10 . 11 . 16 . 17 ) and / or a screw head ( 13 ) in the lowering ( 9 ) with the bearing ring ( 4 . 5 ) flush. Fastening arrangement according to one of the preceding claims, characterized in that the spacer ring ( 10 . 11 . 16 . 17 ) consists of metallic material with an E-modulus of at most 210 kN / mm ² at 20 ° C. Fastening arrangement according to one of the preceding claims, characterized in that the rolling bearing ( 1 ) with two rows for axial bearing rolling elements ( 6 ) and with a number of radial rolling bearing ( 7 ) is trained. Fastening arrangement according to one of the preceding claims, characterized in that the rolling bearing ( 1 ) is designed as a double-row oblique roller or angular contact ball bearings.

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