DE102010010853A1 - Arrangement for adjusting preload of taper roller bearing, has elements providing spacing between rings during absence of pressure, where one ring includes indicator unit to display deformation of elements - Google Patents

Abstract

The arrangement (1) has an inner ring and an outer ring (4) arranged in an axial direction, and rolling members arranged between the inner ring and the outer ring. Deformable spacing elements (12) are arranged between intermediate rings (6, 8), where the deformable spacing elements are homogeneously distributed. The spacing elements provide a spacing between the rings during absence of pressure. One of the rings includes an indicator unit (14) to display deformation of the spacing elements under pressure applied on the other ring such that the former ring rests against the latter ring. An independent claim is also included for a method for adjusting preload of a taper roller bearing.

Description

Field of the invention

The present invention relates to an arrangement for adjusting the preload of a rolling bearing. The rolling bearing comprises an inner ring, an outer ring and a plurality of rolling elements arranged between the inner ring and the outer ring. The inner ring or the outer ring are movable for adjusting the bias in an axial direction.

Furthermore, the invention relates to a method for adjusting the bias of a rolling bearing.

When assembling a rolling bearing or other bearing in need of preloading, a fitter can hitherto resort to two adjustment options. In the first possibility, the applied preload can be calculated back using the friction torque measurement on the installed bearing. In the second option, the bearing is adjusted by means of a dial gauge. The bearing is set by feel to a bias with the value zero and then adjusted by a previously determined value in the micron range. The two options are complex and error-prone.

The German patent application DE 10 2007 051 237 A1 describes a method and apparatus for adjusting the bearing clearance or preload of rolling bearing assemblies having at least two axially mutually adjustable outer or inner rings. Between two axially against each other fixed inner and outer rings Wälzbahnen are formed, on which roll the guided in cages rolling elements. For the adjustment of the bias markings are arranged on at least one rolling element. The markings are assigned an attractive sensor on the cage. A coupled evaluation unit is coupled to the sensor. To set the preload or the bearing clearance, the bearing clearance having a rolling bearing assembly is loaded with an axial force or a tilting moment. The rolling bearing assembly is rotated by at least one full turn. The rolling element rotation is recorded by means of a sensor, and the predetermined preload or the predetermined bearing clearance is adjusted by a corresponding amount via the axially mutually adjustable outer or inner rings.

The German patent application DE 10 2008 024 049 A1 relates to a bearing assembly for supporting a shaft in a receiving structure with at least one rolling bearing. The rolling bearing is designed at least for receiving radial forces of the shaft. For this purpose, it is provided that on the shaft, a preload bearing is arranged, via which by means of a radial load device, a radial bias in the rolling bearing can be introduced.

The German patent application DE 10 2007 018 807 A1 relates to a cage for a rolling bearing and a bearing having this cage. The cage has on at least one cage pocket biasing means which bias the arranged in the cage pocket rolling elements in a direction in which the forces absorbed by the rolling elements act. When the rolling bearing is a thrust bearing, the biasing means bias the rolling elements disposed in the cage pocket in the axial direction with respect to the axis of the rolling bearing. The biasing means are in particular spring elements which exert a defined biasing force on the rolling elements.

A bearing arrangement for the radial and axial mounting of a shaft part relative to a housing is in the German patent application DE 10 2005 055 995 A1 disclosed. The bearing assembly comprises two axially spaced apart on the shaft part to be arranged under bias rolling bearings. In order to ensure optimum preload in the bearing arrangement, it is provided that at least one section of at least one bearing ring of the roller bearing and / or at least a portion of the shaft part is provided with a magnetic coding. In the vicinity of the magnetic coding, a sensor is arranged, which is designed to detect changes in the magnetic coding. Furthermore, a method for adjusting the preload in the rolling bearings of the bearing assembly is disclosed.

In a double-row rolling bearing, there is a uniform relationship between a preload applied to the bearing and a preload distance formed by the elastic deformation of rolling elements and some parts related to the rolling elements. That is in the German patent application DE 197 48 664 A1 disclosed. Therefore, the measurement of the bias corresponds to the measurement of the bias distance. A preload distance is measured on each row of rolling elements and the measured values of the preload spacings are added so that the total preload distance of the bearing is obtained.

The German translation of the European patent specification DE 695 14 046 T2 relates to a method for mounting a bearing. For this purpose, a bearing ring with a conical bore is positioned on a shaft and the bearing is moved axially along the shaft by a correct amount. The deformation of the bearing ring is measured on at least one end face during the time in which the ring is axially distended. The instantaneous reduction of the clearance in the bearing and the initial bearing clearance is calculated.

The European patent application EP 0 534 537 A1 relates to a method by which to preload a threaded component. For measuring the acting bias voltage, a piezoelectric film is introduced between the two components to be preloaded against each other. Via electrical connections, a measuring instrument is connected to the piezoelectric film.

The European patent application EP 1 134 443 A1 relates to an arrangement and a method for determining the preload in bearings. For this purpose, two ring elements are provided which transmit the bias to the outer ring of the bearing. A pressure or a displacement is exerted via piezo elements which are arranged between the two ring elements. A feedback system can be used to determine the applied force or pressure.

The object of the invention is to provide an arrangement for biasing a rolling bearing, which is inexpensive, easy to handle and allows a defined adjustment of the bias of a rolling bearing.

The object of the present invention is achieved by a device for adjusting the bias of a rolling bearing comprising the features of claim 1.

Another object of the invention is to provide a method of preloading a rolling bearing that is inexpensive, that can be handled easily, and that allows a defined adjustment of the preload of a rolling bearing.

This object is achieved by a method for adjusting the bias of a rolling bearing comprising the features of claim 8.

The arrangement serves to adjust the preload of a rolling bearing. The rolling bearing comprises an axially movable inner ring or an axially movable outer ring. Between the inner ring and the outer ring a plurality of rolling elements are provided. The arrangement consists of a first intermediate ring and a second intermediate ring, between which a plurality of deformable spacer elements are arranged homogeneously distributed. The spacers hold in the unloaded state, d. H. if no pressure is applied, the first intermediate ring and the second intermediate ring at a distance. At least one of the intermediate rings carries a display means, which indicates when under the applied pressure, the spacer elements are deformed such that the first intermediate ring rests on the second intermediate ring.

By a pressure on the second intermediate ring, the spacer elements, which are preferably made of deformable aluminum or a similar deformable material, compressed by the length by means of which the first intermediate ring is spaced from the second intermediate ring. As soon as the first intermediate ring and the second intermediate ring touch, an action or a signal is triggered. For this purpose, corresponding display means are provided. According to a first embodiment, the display means is provided on the first intermediate ring or on the second intermediate ring. Upon contact of the first intermediate ring and the second intermediate ring, an action is triggered mechanically. This means that the display means is substantially self-sufficient and triggers the action solely by a mechanical contact by means of the intermediate ring, which carries no display means.

To facilitate the homogeneous arrangement of the spacer elements, the first intermediate ring and / or the second intermediate ring can be provided with correspondingly homogeneously distributed receiving positions. The number of recording positions corresponds to the number of spacers.

According to a further embodiment of the invention, the display means is provided on the first intermediate ring and on the second intermediate ring. The indicating means is attached to the first intermediate ring and the second intermediate ring at respectively opposite positions. The display means is electrically conductive and upon contact of the first intermediate ring and the second intermediate ring, an action is electrically triggered.

The at least one display means is connected to a control, via which an acoustic signal can be triggered upon contact of the first intermediate ring and the second intermediate ring and / or the applied pressure is automatically reduced.

The spacers have a cylindrical shape and are, as already mentioned, preferably made of deformable aluminum. The spacer elements are designed such that a force-displacement curve of the spacer elements results such that the first intermediate ring and the second intermediate ring touch only when the required for the preload of the rolling bearing maximum pressure or the maximum force are reached.

Except aluminum is also another deformable material, such. B., plastic conceivable. Likewise, you can of course other than the cylindrical shape for the spacer elements use geometric shapes for the spacers.

The first intermediate ring and the second intermediate ring are made of a non-conductive material. The intermediate rings may be made of a plastic or paper.

• – dass ein erster Zwischenring auf einen Innenring des Wälzlagers aufgelegt wird;
• – dass mehrere deformierbare Abstandselemente zwischen dem ersten Zwischenring und einem zweiten Zwischenring homogen verteilt angeordnet werden;
• – dass der zweite Zwischenring, die deformierbaren Abstandselemente, der Innenring des Wälzlagers und der Außenring des Wälzlagers mit einem derartigen Druck solange gegeneinander beaufschlagt werden, bis sich der erste Zwischenring und der zweite Zwischenring aufgrund der Deformation der Abstandselemente berühren; und
• – dass bei Erreichen der Berührung des ersten Zwischenrings und des zweiten Zwischenrings der Druck weggenommen wird.

The inventive method for adjusting the preload of a rolling bearing, characterized by the following steps:

• - That a first intermediate ring is placed on an inner ring of the bearing;
• - That a plurality of deformable spacers between the first intermediate ring and a second intermediate ring are arranged homogeneously distributed;
• - That the second intermediate ring, the deformable spacers, the inner ring of the rolling bearing and the outer ring of the rolling bearing are subjected to such a pressure against each other until the first intermediate ring and the second intermediate ring touch due to the deformation of the spacer elements; and
• - That upon reaching the contact of the first intermediate ring and the second intermediate ring, the pressure is removed.

It is advantageous if the pressure is automatically removed. For this purpose, a control is associated with the display element, with the arrangement according to the invention for biasing a rolling bearing is operated in accordance with the invention.

In the following, the invention and its advantages will be explained with reference to the accompanying figures. Showing:

1 an exploded perspective view of a first embodiment of the arrangement for biasing a rolling bearing;

2 an exploded perspective view of a second embodiment of the arrangement for biasing a rolling bearing; and

3 a partial view of a tapered roller bearing, which cooperates with the arrangement for biasing.

For identical or equivalent elements of the invention, identical reference numerals are used. Furthermore, for the sake of clarity, only reference symbols are shown in the individual figures, which are required for the description of the respective figure. The illustrated embodiments are merely examples of how the arrangement according to the invention or the method according to the invention can be designed so that a defined preload for a rolling bearing or tapered roller bearing can be set.

1 shows an exploded perspective view of a first embodiment of the arrangement 1 for preloading a rolling bearing 10 (please refer 3 ). The rolling bearing 10 , which is formed in the embodiment shown here as a tapered roller bearing. The rolling bearing 10 consists essentially of a movable in the axial direction A inner ring 3 or a correspondingly movable outer ring 4 , Between the inner ring 3 and the outer ring 4 are several rolling elements 7 (please refer 3 ) arranged. For setting a defined preload of the rolling bearing 10 is at the movable in the axial direction A inner ring 3 or a correspondingly movable outer ring 4 a first intermediate ring 6 created. In the embodiments illustrated in the description, the first intermediate ring is located 6 on the inner ring 3 of the rolling bearing 10 at.

The arrangement for adjusting the preload of a rolling bearing is in addition to the first intermediate ring 6 further from a second intermediate ring 8th , Between the first intermediate ring 6 and the second intermediate ring 8th are several deformable spacers 12 arranged homogeneously distributed.

The spacers 12 hold the first intermediate ring 6 and the second intermediate ring 8th at a distance when no force or no pressure P is applied to the assembly. The pressure P is on the second intermediate ring 8th exercised. It goes without saying for a person skilled in the art that the inner ring is not movable in the axial direction 3 or outer ring 4 a corresponding counterforce is applied. About the movable in the axial direction A inner ring 3 or outer ring 4 the required preload is set. In the embodiments shown here, the inner ring 3 movable in the axial direction A. The first intermediate ring 6 thus lies on the inner ring 3 at. To determine if the for the rolling bearing 10 required preload is reached in the in 1 the embodiment shown, the first intermediate ring 6 and the second intermediate ring 8th with a display means 14 Mistake. Via the display means is indicated when under the applied pressure P, the spacers 12 deformed such that the first intermediate ring 6 at the second intermediate ring 8th is applied.

To facilitate the arrangement of the spacer elements 12 can be the first intermediate ring 6 and / or the second intermediate ring 8th with homogeneously distributed recording positions 13 be provided. The number of recording positions 13 corresponds to the number of spacers 12 , The first intermediate ring 6 and at the second intermediate ring 8th respectively oppositely mounted display means 14 is electrically conductive, so when touching the first intermediate ring 6 and the second intermediate ring 8th an action is electrically triggered. The display means 14 the first and the second intermediate ring 6 and 8th is with a controller 20 connected. When touching the first intermediate ring 6 and the second intermediate ring 8th An acoustic signal can be triggered indicating that the exact preload value of the bearing is correct 10 is reached. In addition it is possible that the over the control 20 applied pressure P is automatically reduced or removed when the first and the second intermediate ring 6 and 8th touch and thus the exact value for the preload of the bearing 10 is reached.

2 shows an exploded perspective view of a second embodiment of the arrangement for biasing a rolling bearing 10 , In the 2 embodiment shown is with the embodiment of the 1 except for the arrangement of the display means 14 identical. Here wears either the first intermediate ring 6 or the second intermediate ring 8th the display means 14 , Analogous to the embodiment in FIG 1 is also at the touch of the first intermediate ring 6 with the second intermediate ring 8th an action is triggered.

3 shows a partial view of a tapered roller bearing, which cooperates with the arrangement for biasing. Between a career 24 of the outer ring 4 and a career 23 of the inner ring 3 are the rolling elements 7 arranged, which are formed in this embodiment as tapered rollers. The first intermediate ring 6 lies on the inner ring 3 of the rolling bearing 10 at. The spacers 12 hold the first intermediate ring 3 and the second intermediate ring 8th at a distance before the pressure required to achieve the defined preload is applied. To adjust the bias of the required pressure on the second intermediate ring 8th created. The outer ring 4 of the rolling bearing 10 is located on an immovable mounting part 22 at. By the second intermediate ring 8th applied pressure P, the spacers begin 12 to deform and the inner ring 3 is moved in the axial direction A. The spacers 12 are deformed until the first intermediate ring 6 and the second intermediate ring 8th touch. As mentioned above, the application of the pressure P by the controller 20 reduced or taken away when the required preload of the rolling bearing is reached.

The present invention has been described in terms of preferred embodiments. Nevertheless, changes and modifications of the embodiments of the intermediate pieces presented here can be made without departing from the scope of the following claims.

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

• DE 102007051237 A1 [0004]
• DE 102008024049 A1 [0005]
• DE 102007018807 A1 [0006]
• DE 102005055995 A1 [0007]
• DE 19748664 A1 [0008]
• DE 69514046 T2 [0009]
• EP 0534537 A1 [0010]
• EP 1134443 A1 [0011]

Claims (10)

Arrangement ( 1 ) for adjusting the preload of a rolling bearing ( 10 ), which has an inner ring ( 3 ) and an outer ring ( 4 ), wherein the inner ring ( 3 ) or the outer ring ( 4 ) are arranged to be movable in the axial direction and that a plurality of between the inner ring ( 3 ) and the outer ring ( 4 ) arranged rolling elements ( 7 ) are provided, characterized in that the arrangement of a first intermediate ring ( 6 ) and a second intermediate ring ( 8th ) between which a plurality of deformable spacers ( 12 ) are arranged homogeneously distributed and the first intermediate ring ( 6 ) from the second intermediate ring ( 8th ) when no pressure (P) is applied, and that at least one of the intermediate rings ( 6 . 8th ) a display means ( 14 ) indicating when, under the applied pressure (P), the spacers ( 12 ) are deformed such that the first intermediate ring ( 6 ) on the second intermediate ring ( 8th ) is present. Arrangement ( 1 ) according to claim 1, wherein the first intermediate ring ( 6 ) and / or the second intermediate ring ( 6 ) with homogeneously distributed recording positions ( 13 ), which corresponds to the number of spacers ( 12 ) corresponds. Arrangement ( 1 ) according to claims 1 to 2, wherein at the first intermediate ring ( 6 ) or on the second intermediate ring ( 8th ) the display means ( 14 ) is provided and that when touching the first intermediate ring ( 6 ) and the second intermediate ring ( 8th ) an action is mechanically triggered. Arrangement ( 1 ) according to claims 1 to 2, wherein at the first intermediate ring ( 6 ) and at the second intermediate ring ( 8th ) in each case opposite the display means ( 14 ) and is electrically conductive and that when touching the first intermediate ring ( 6 ) and the second intermediate ring ( 8th ) an action is electrically triggered. Arrangement ( 1 ) according to claims 1 to 4, wherein the at least one display means ( 14 ) with a controller ( 20 ) is connected, via which when touching the first intermediate ring ( 6 ) and the second intermediate ring ( 8th ) An acoustic signal can be triggered and / or the applied pressure (P) is automatically reduced. Arrangement ( 1 ) according to claims 1 to 5, wherein the spacer elements ( 12 ) have a cylindrical shape, made of deformable aluminum and are designed such that a force-displacement curve of the spacer elements ( 12 ) is calculated such that the first intermediate ring ( 6 ) and the second intermediate ring ( 8th ) only when the required for the preload of the rolling bearing maximum pressure (P) is reached. Arrangement ( 1 ) according to claims 1 to 6, wherein the first intermediate ring ( 6 ) and the second intermediate ring ( 8th ) consist of a non-conductive material. Method for adjusting the preload of a roller bearing, characterized by the following steps: - that a first intermediate ring ( 6 ) on an axially movable inner ring ( 3 ) or outer ring ( 4 ) of the rolling bearing ( 10 ) is launched; That several deformable spacer elements ( 12 ) between the first intermediate ring ( 6 ) and a second intermediate ring ( 8th ) are arranged homogeneously distributed; - that the second intermediate ring ( 8th ), the deformable spacers ( 12 ), the inner ring ( 3 ) of the rolling bearing and the outer ring of the rolling bearing with such a pressure (P) as long as against each other acted until the first intermediate ring ( 6 ) and the second intermediate ring ( 8th ) due to the deformation of the spacer elements ( 12 ) touch; and - that upon reaching the contact of the first intermediate ring ( 6 ) and the second intermediate ring ( 8th ) the pressure is removed. Method according to claim 8, wherein when the first intermediate ring ( 6 ) and the second intermediate ring ( 8th ) via at least one of the first intermediate ring ( 6 ) and / or the second intermediate ring ( 8th ) associated display element ( 14 ) associated with a controller, an action is triggered. A method according to claim 9, wherein as an action upon contact of the first intermediate ring ( 6 ) and the second intermediate ring ( 8th ) an acoustic signal is triggered and / or the applied pressure (P) is automatically reduced.

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