DE10153432C1 - Method for fitting bearing has a fitting flange on the outer bearing ring to press into a mounting flange - Google Patents

Abstract

A method for fitting bearings has the outer ring of the bearing fitted with a flange with a thrust profile on one side. The thrust profile includes a groove to allow the free flow of material when the thrust ring is pressed into the mounting flange causing plastic flow of material. The groove runs at an angle from between the thrust profile and the outer edge of the bearing. The bearing is pressed onto the mounting flange while at the same time aligning the bearing axially and radially.

Description

The invention relates to a rolling bearing and a method for fixing a Rolling bearing according to the preambles of the independent main claims.

Generic rolling bearings have an inner and an outer bearing ring, between which several rolling elements, such as balls, cylinders, etc. are arranged.

For the correct positioning of such bearings in a machine or Similarly, when mounting on other components, the rolling bearings must For example, waves, axles or housing bores are fixed. In the Fixation of the rolling bearings are basically two different directions too differ. On the one hand, the fixation in the axial direction of the bearing done to an unwanted displacement of the rolling bearing along the Prevent rotation axis. Next rolling bearings can also be in the radial direction be fixed, thereby achieving an anti-rotation of the bearing rings.

From DE 33 26 491 A1 discloses a method and a device for attachment known from rolling bearings on smooth cylindrical shafts. This is a commercial bearings on the shaft, no special shoulder areas  has, plugged and suitable Stemmwerkzeuge such on the shaft to Engaged brought that side of the rolling bearing material of the shaft becomes. By this aufgestemmte material of the shaft, the rolling bearing is axially on the shaft is fixed so that a displacement of the rolling bearing in the axial direction is excluded.

A disadvantage of the fastening tool is that for its implementation elaborate and relatively large tool must be used.

Object of the present invention is therefore to propose a rolling bearing, without the use of additional hardware and without the use of a special fastening tool so fixed to another component can, that the position of the rolling bearing is secured in the axial direction. It is next Object of the present invention, a method for fixing such To propose rolling bearings.

This object is achieved by a rolling bearing or by a method according to the teaching the independent main claims.

Advantageous embodiments of the invention are the subject of Dependent claims.

The rolling bearing according to the invention is based on the idea that on a the bearing rings a recess is provided, in which the opposite Component-forming material can flow at least piecewise plastic. As soon as the material has flowed sufficiently deep into the recess of the bearing ring, creates a positive connection between the component and bearing ring, through the axial position of the rolling bearing is secured relative to the component. At the the Recessed bearing ring is a radially outward or inward extending flange formed. This flange can be fitted with a contact surface Axial direction come to the component to the plant. Moreover, the depression is in the  Transition between the radial peripheral surface of the bearing ring and the axial Contact surface of the flange arranged. As a result, can be achieved be that axial displacement of the bearing of a bearing ring with the Contact surface of the molded flange on the component comes to rest and in the Contact surface between flange and component a pressure state is built up. As soon as the compressive stresses are sufficiently high, the part forming the component catches Material to flow and flows into the recess on the bearing ring. Thus can the inventive production of the positive connection between rolling bearings and component by simply pressing the bearing with accordingly suitable pressing tools are realized. To the inflow of the material in the recess of the bearing ring even at relatively low external pressure to realize, is at the axial bearing surface of the flange a protruding, in particular wedge-shaped, formed stamp element. This stamp element concentrates the applied pressure forces, so that sufficient for the flow of the material sufficient pressure already at lower external pressure forces is achieved. The stamp element is in this case to arrange that the plastically flowing material in the recess of Lagerrings is displaced.

An advantage of the rolling bearing according to the invention is in particular that the Use of special tools for producing the positive connection between Rolling and component is not required. Rather, the positive connection be prepared by having between the recess Bearing ring and the component a sufficiently high pressure is built up, so that the material forming the component begins to flow and plastically into the Recess forms. As far as the component forming material during the Production is still plastically moldable, for example, in the use of Thermoplastic or thermosetting plastics, it is also conceivable that the Material flows substantially force-free into the recess and there then solidifies.  

Which geometry has the depression is basically arbitrary. Especially high holding forces between the rolling bearing and component can be achieved according to the invention be formed when the recess is formed in the manner of an annular groove. The Of course, groove can also only partially into the bearing ring be incorporated. However, the holding forces can still be increased when the Nut closed circumferentially formed. Is the groove only in sections formed, by the inventive inflow of the component forming material in the groove sections in addition to an axial position assurance also an anti-rotation of the bearing ring can be realized.

According to a preferred embodiment of the invention, the extends inventive recess relative to the axial joining direction in the attachment of the rolling bearing on the component obliquely inwards or outwards. By the oblique Course of the depression is achieved that the plastically flowing material is continuously displaced deeper into the material of the bearing ring and to the Boundary surfaces of the recess is derived radially inward or outward.

Is at least one projecting on a radial peripheral surface of a bearing ring Secured element provided to prevent rotation of the bearing ring positively in the component forming material can be molded, thereby be achieved that the rolling bearing in a simple linear directional Joining movement in the axial direction of the bearing both radially and axially in its location can be secured. The radial rotation is thereby realizes the formation of the fuse element in the component.  

The securing element for preventing rotation can in particular in the manner of a annular knurling extending in the axial direction of the bearing Be formed knurling.

An embodiment of the invention is shown in the drawings and will described in more detail below.

Show it:

Fig. 1 shows an inventive bearing before mounting on a component in cross section;

Fig. 2 shows the rolling bearing of FIG. 1 after attachment to the component in cross section.

The rolling bearing 1 shown in FIG. 1 is disposed in an inner bearing ring 2, an outer bearing ring 3 and between the bearing rings 2 and 3, constructed in the manner of balls rolling bodies formed. 4

For mounting of the rolling bearing 1 in a housing bore 5 of a housing 6 , the rolling bearing 1 is pressed into the housing bore 5 in a direction indicated by the movement arrow 7 axially directed joining movement. For this purpose, a simple, not shown in Fig. 1 and 2, the pressing device is used.

On the outer bearing ring 3 , a radially outwardly extending flange 8 is formed, which can come to rest with a contact surface 9 on the housing 6 . Through the flange 8 , the position of the rolling bearing 1 in one direction, in the embodiment shown in Fig. 1 down, axially secured. In order to reliably exclude a retraction of the bearing 1 from the housing bore 5 and thus to ensure in the final result an axial positional securing of the bearing in both axial directions, in the transition region between the flange 8 and the radial peripheral surface 10 of the outer bearing ring 3 is a recess 11 in incorporated the bearing ring 3 . The recess 11 is formed in the manner of a closed circumferential, annular groove and extends relative to the joining direction 7 obliquely inwardly into the material of the bearing ring. 3

The function of the recess 11 in the axial position assurance of the rolling bearing 1 is shown in FIG. 2. By pressing the outer bearing ring 3 in the housing bore 5 , the material of the housing 6 is placed in the edge region of the housing bore 5 in a state of stress, so that the material is plastically deformed and flows into the recess 11 of the bearing ring 3 . In order to facilitate the structure of the required for the flow of the material of the housing 6 state of stress, a wedge-shaped punch member 12 is formed in the axial bearing surface 9 of the flange 8 . The tip of the stamp member 12 penetrates into the material of the housing 6 and displaces the material from this area into the recess 11 .

In order to exclude a rotation of the outer bearing ring 3 relative to the housing 6 , an annular knurling 13 is provided on the radial peripheral surface 10 of the bearing ring 3 . The knurling elements of the knurling 13, which extend linearly in the axial direction of the roller bearing 1, are formed into the housing bore 5 in the material of the housing 6 during the axial pressing in of the outer bearing ring 3 . Due to the positive connection between the housing 6 and the knurling 13 , the rotation of the outer bearing ring 3 relative to the housing 6 is excluded after assembly.

reference numeral

1

Rolling

2

inner bearing ring

3

outer bearing ring

4

rolling elements

5

housing bore

6

casing

7

Movement arrow (joining movement)

8th

flange

9

Contact surface (flange)

10

radial peripheral surface (outer bearing ring)

11

Recess (outer bearing ring)

12

stamp element

13

knurling

Claims (9)

1. rolling bearing ( 1 ) with an inner bearing ring ( 2 ) and an outer bearing ring ( 3 ) and a plurality of between the bearing rings ( 2 , 3 ) arranged rolling elements ( 4 ), wherein one of the bearing rings ( 3 ) for securing the position of the rolling bearing ( 1 ) in the axial direction on another component ( 6 ) can be fixed, characterized in that on at least one of the bearing rings ( 3 ) has a recess ( 11 ) is provided in the for the production of the positive connection between the component ( 6 ) and roller bearings ( 1 ) of which the component ( 6 ) forming material can flow at least piecewise plastically, on which the recess ( 11 ) having bearing ring ( 3 ) is formed a radially outwardly or inwardly extending flange ( 8 ) with a contact surface ( 9 ) in Axialrichtung on the component ( 6 ) can come to rest, wherein the recess ( 11 ) for the axial fixation of the rolling bearing ( 1 ) in the transition between a radial peripheral surface ( 10 ) of the bearing ring ( 3 ) and the abutment surface ( 9 ) of the flange ( 8 ) is arranged and on the abutment surface ( 9 ) of the flange ( 8 ) a projecting stamp element ( 12 ) is formed, with which upon application of a sufficient pressure between the flange ( 8 ) and component ( 6 ) the material forming the component ( 6 ) can be displaced at least piecewise into the depression ( 11 ). 2. Rolling bearing according to claim 1, characterized in that the stamp element ( 12 ) is wedge-shaped. 3. Rolling bearing according to one of claims 1 or 2, characterized in that the recess ( 11 ) in the manner of a, in particular closed circumferential, annular groove is formed. 4. Rolling bearing according to one of claims 1 to 3, characterized in that the recess ( 11 ) relative to the axial joining direction ( 7 ) in the attachment of the rolling bearing ( 1 ) on the component ( 6 ) obliquely inwards or outwards in the bearing ring ( 3 ) extends. 5. Rolling bearing according to one of claims 1 to 4, characterized in that on a radial peripheral surface ( 10 ) of a bearing ring ( 3 ) at least one projecting securing element ( 13 ) is provided for positively locking the bearing member ( 3 ) in the component ( 6 ) forming material is einformbar. 6. Rolling bearing according to claim 5, characterized in that the securing element ( 13 ) in the manner of a, in particular closed circumferential, annular knurling is formed. 7. Rolling bearing according to one of claims 1 to 6, characterized in that the component ( 6 ) in the manner of a housing with a housing bore ( 5 ) for receiving the rolling bearing ( 1 ) is formed. 8. A method for the positive axial fixation of a rolling bearing ( 1 ) with an inner bearing ring ( 2 ) and an outer bearing ring ( 3 ) and a plurality between the bearing rings ( 2 , 3 ) arranged rolling elements ( 4 ) on a component ( 6 ), characterized that
one of the bearing rings ( 3 ) of the rolling bearing ( 1 ) in a basal joining movement ( 7 ) with an axial contact surface ( 9 ) on which a stamping element ( 12 ) is formed, is brought to bear on the component ( 6 ),
the bearing ring ( 3 ) is pressed so strongly axially against the component (06) until the material forming the component ( 6 ) begins to flow plastically in regions,
the pressure between component ( 6 ) and bearing ring ( 3 ) is maintained until the material forming the component ( 6 ) has flowed into a recess ( 11 ) on the bearing ring ( 3 ) at least as far as that due to the plastic deformation of the component ( 6 ) A permanent positive connection between the bearing ring ( 3 ) and component ( 6 ) is formed. 9. The method according to claim 8, characterized in that the bearing ring ( 3 ) during the basal joining movement ( 7 ) with at least one protruding securing element ( 11 ), in particular a knurling extending in the axial direction, for preventing rotation of the bearing ring ( 3 ) positively in the the component (06) forming material is formed.