WO2006053610A1

WO2006053610A1 - Connecting assembly for a first and a second component and method for producing a connecting assembly of this type

Info

Publication number: WO2006053610A1
Application number: PCT/EP2005/010944
Authority: WO
Inventors: Rudolf Bauer; Peter RUFFERSHÖFER
Original assignee: Schaeffler Kg
Priority date: 2004-11-17
Filing date: 2005-10-12
Publication date: 2006-05-26
Also published as: DE102004055427A1; DE102004055427B4

Abstract

The invention relates to a connecting assembly for a first component in the form of a bearing sleeve (8) and at least one second component that is provided with a bore (13) and that is threaded onto the bearing sleeve (8). The invention also relates to a method for producing a connecting assembly of this type. The aim of the invention is to provide an improved connecting assembly of this type with little axial play, which is simple and cost-effective to produce and guarantees a secure fixation of the connection without the need for additional fixing elements and to also provide a suitable method for producing a connecting assembly. To achieve this, the second component is connected in a positive fit to the bearing sleeve by means of a force (F) that acts essentially outwards in a radial direction on the inner contour of the sleeve bore (12) and the resultant plastic deformation of the material of said bearing sleeve (8).

Description

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Name of the invention

Connecting arrangement between a first and a second component and method for producing such a connection arrangement

description

Field of the invention

The invention relates to a connection arrangement between a first Bau¬ part in the form of a bearing sleeve and at least one versehe¬ nen with a bore and threaded onto the bearing sleeve second component. The invention further relates to a method for producing such a connection arrangement.

Background of the invention

Connecting arrangements of the generic type have long been known, wherein predominantly the bond between the bearing sleeve and the second component is complex realized by crimping or end-side caulking the Endab¬ section of the bearing sleeve, for example by wobble rivets. Likewise, it is known to firmly connect a threaded onto the bearing sleeve second component by gluing or welding with the bearing sleeve.

From DE 101 30 458 A1, for example, a thrust bearing is known, in which a second component in the form of an L-shaped running disk is fastened on the middle of a bearing sleeve to the above-described joining method. It is also proposed instead of this joining method to provide a retaining ring in the form of a resilient clamping ring, which is supported on the bearing sleeve and adjoins both the adjacent running disk and all coaxial Components subjected to a spring force. The abovementioned solutions have in common that no or only with a considerable mechanical outlay a sum tolerance compensation of the components can be realized or a influencing of the axial play is possible.

Furthermore, a connection arrangement between a component provided with a bore and a hollow bolt carrying the same is known, wherein a fixing element with excess, such as a ball, a barrel or a cone section, is pressed into the longitudinal bore of the hollow bolt (DE 35 01 400 C1, DE 44 36 963 A1). Here, the fixing element remains in the longitudinal bore, which leads to an increased weight and increased costs of Verbindungsan¬ Regulation. Furthermore, it can not be ruled out that the fixing element escapes from the longitudinal bore as a result of loading of the components and the realized non-positive and / or positive connection dissolves again due to elastic Zu¬ the material of the hollow bolt.

Object of the invention

The invention has for its object to provide an improved Verbindungsanord¬ voltage between a first component in the form of a bearing sleeve and at least one provided with a bore and threaded onto the bearing sleeve second component, which has the lowest possible axial and tilt play, simple and inexpensive can be produced, and ensures a secure fit of the connection without additional fixing. Another object is to provide a suitable method for producing a derarti¬ gene connection arrangement.

Solution of the task

The invention is based on the finding that conventional connection arrangements of the generic type or methods for producing Position thereof are costly and sometimes associated with a considerable Ver¬ pollution of the connection arrangement (eg., By welding of the components), which in turn lead to consequential costs due to elimination of contamination.

The object is achieved according to the features of the main claim by a connection arrangement between a first component in the form of a La¬ gerhülse and at least one provided with a bore and gerhülse on the La¬ second component solved such that the second component due to a substantially radial outward force acting on the inner contour of the Hül¬ senbohrung and a resulting plastic Ver¬ formation of the material of the bearing sleeve is connected to the same form-fitting manner.

Advantageous developments and embodiments of the invention are the dependent claims. Thereafter, it can be provided that the second component is formed by a Lagerbauteii a rolling bearing or other bearing, an electronic circuit board or otherwise with a bearing sleeve ver¬ binding component.

A rolling bearing in the form of a thrust bearing, with two coaxially angeord¬ Neten Wälzkörperkränzen, in turn, each roll between a middle and an outer disk of the thrust bearing and are radially supported with their Aufnahme¬ bore on a largely cylindrical portion of the first component in the form of the bearing sleeve , wherein the bearing sleeve at one end has a radially parked support flange on which the composite of Wälzkörperkränzen and pulleys axially abuts, and the other end has a cylindrical end portion for receiving the second component for the axial cohesion of said composite of Wälzkörperkränzen and Lauf¬ slices, according to the invention in that the second component is a retaining ring, and the said retaining ring is produced as a result of an essentially chen radially outward on the inner contour of the sleeve bore in the region of the end portion of the bearing sleeve acting force and resulting plastic deformation of the material of the end portion of the bearing sleeve is connected to the same form-fitting manner.

The bore of the second component or retaining ring can be formed both evenly and surface-structured. In the case of a well-trained bore this is preferably reduced to the support flange continuously in diameter.

If, on the other hand, a surface-structured bore of the second component or retaining ring is selected, then this may be formed by one or more incremental steps of the inner diameter.

The increment (s) may be formed by a gradation in the direction of the support flange from the higher to the lower diameter, one or more annular steps and / or one or more threaded gears. Furthermore, in order to achieve the goal, it is possible for the step jumps to be sharp, rounded or formed with a phase transition.

As the invention further provides, the force acting radially outward on the inner contour of the sleeve bore in the region of the end portion of the bearing sleeve is realized by means of a Aufweitwerkzeuges. This expansion tool can be operated hydraulically, pneumatically or electromechanically.

According to a first preferred embodiment of the expansion tool this is formed by an axially insertable into the sleeve bore stamp. The punch is designed such that during the axial insertion of the punch in the sleeve bore a radial force on the inner contour der¬ same is applicable. As appropriate, a spherical, halbkugel¬ shaped, cylindrical, cylindrical with insertion bevel, spherical with cylindrical center section, spherical with insertion or any other suitable design with excess over the sleeve bore er¬ pays for said stamp.

According to a second preferred embodiment of the expansion tool, this is formed by a radially expandable by means of an expanding mandrel expansion element.

The method for producing a connection arrangement of the generic type, in particular for producing an axial bearing, is characterized by the following steps to be carried out successively:

Providing a largely cylindrical bearing sleeve with a radially offset support flange at one end and fixing der¬ same in the radial and axial directions.

Threading of Wälzkörperkränzen and pulleys on the cylindrical portion of the bearing sleeve in the direction of the support flange. Threading a retaining ring provided with a smooth or structured bore onto the end section of the bearing sleeve against the collar of rolling element crowns and running disks, and acting upon same with a defined axial force.

Actuation of the inner contour of the sleeve bore in the region of the End¬ section of the bearing sleeve with such and substantially radially outward force that a positive connection of bearing sleeve and retaining ring due to a plastic deformation of Mate¬ rials the end portion of the bearing sleeve against the bore of the holding ¬ rings is achieved. _"

It is further proposed that a form fit between the bearing sleeve and retaining ring is realized in such a way that material of the end section of the bearing sleeve largely conforms to the inner contour of the bore of the retaining ring or largely penetrates it in structurings thereof.

In a further development of the method according to the invention, such an axial force is applied to the retaining ring that an axial play of <5 μm is reliably guaranteed over the entire manufacturing process.

According to a further measure, it is provided that at least the retaining ring is fixed to the bearing sleeve at least in the axial direction during the plastic deformation of the material of the end section.

Finally, it is provided that an axially insertable into the sleeve bore expansion tool is used for plastic deformation of the material of the end portion of the bearing sleeve.

Short description of the drawing

The invention will be explained in more detail with reference to the accompanying drawings of some embodiments. It shows

Fig. 1 is a sectional view of an inventive design

Connecting arrangement in the form of a thrust bearing,

Fig. 2a - 2f, the bore of a retaining ring of the thrust bearing of FIG. 1 in six possible embodiments variants, and

Fig. 3a - 3f an expansion tool in the form of a stamp in six possible designs. Detailed description of the drawing

The connection arrangement shown in Fig. 1 comprises a roller bearing in the form of a thrust bearing 1, with two coaxially arranged Wälzkörper¬ wreaths 2 and 3, which in turn roll between a middle disk 4 and each and an outer disk 5 and 6 of the thrust bearing 1, and with their receiving bore on a largely cylindrical portion 7 ei¬ ner bearing sleeve 8 are radially supported.

The bearing sleeve 8 has at one end a radially parked support flange 9, on which the composite of the Wälzkörperkränzen ben 2, 3 and the Laufschei¬ ben 4, 5, 6 axially abuts. The bearing sleeve 8 is rotationally symmetrical about its Mit¬ tenachse 14 formed and depending on the application vorzugswei¬ se made of metal or plastic.

At the other end, the bearing sleeve 8 has a cylindrical end portion 10, which in turn serves to receive a retaining ring 11 for the axial Zusammen¬ hold of said composite.

According to the invention, the retaining ring 11 is connected to the same by virtue of a force F acting essentially radially outwards on the inner contour of the sleeve bore 12 (FIGS. 2a-2f) in the region of the end section 10 of the bearing sleeve 8.

The desired axially and radially fixed connection results from a plastic deformation of the material of the end portion 10 of the bearing sleeve 8, which conforms to the inner contour of the retaining ring 11. Furthermore, by the radially outward force F, inter alia, a solidification of the material can be achieved, which then leads to a particularly strong bond. In that regard, holding forces of the thrust bearing of more than 500 N achievable.

As is shown in more detail in particular in FIGS. 2a to 2f, the bore 13 of the retaining ring 11 can be formed both in a uniform manner and in a surface-structured manner.

In Fig. 2e therefore a well-trained bore 13 is shown, which in turn is formed to the support flange 9 of the bearing sleeve 8 out continuously conical aus¬. As a result of this measure, positive locking in the axial and radial directions is achieved by plastic deformation and, if appropriate, solidification of the material of the bearing sleeve 8. Accordingly, plastically deformed material of the end section 10 of the bearing sleeve 8 enters the region of larger diameter of the bore 13 and accordingly prevents retraction of the retaining ring 11 away from the support flange 9, whereby a specific axial clearance of the axial bearing 1 can be adjusted in an extremely effective manner the entire bearing life can be maintained.

A nearly identical effect is achievable with the surface-structured holes 13 of the retaining ring 11 shown in FIGS. 2 a to 2 d and 2 f, which in turn have one or more increments 15.

Thus, in FIG. 2b, a gradation (increment 15) in the direction of the support flange 9 from the higher to the lower diameter is shown. Likewise, one or more annular graduations (FIGS. 2c, 2d, 2f), as it were annular grooves, and / or one or more threads (FIG. 2a) may advantageously be provided.

These step jumps 15 can furthermore be sharp-edged (FIG. 2f), rounded (FIG. 2c), wave-shaped or with a phase transition 16 (FIGS. 2a, 2b, 2d). "

The said curves and phase transitions 16 act in an advantageous manner supporting the connection by the plastically deformed material of the end portion 10 of the bearing sleeve 8 easily penetrate into the annular grooves and can closely conform to the inner contour of the bore 13, which in turn the desired fit for axial and radial fixing the Halte¬ rings 11 is ensured on the bearing sleeve 8.

The invention will be further described below with reference to a preferred method for producing the thrust bearing 1 shown in FIG.

Thereafter, a prefabricated, largely cylindrically designed bearing sleeve 8 is first provided with the support flange 9 which is radially offset at one end and fixed radially and axially in a suitable device. Subsequently, the Wälzkörperkränze 2, 3 and the pulleys 4, 5, 6 are threaded onto the cylindrical portion 7 of the bearing sleeve 8 in the direction of Stütz¬ flange 9. Subsequently, the retaining ring 11 is pushed onto the bearing sleeve 8 and acted upon by a defined axial force.

The axial force is chosen such that an axial play of the bearing ≤ 5 μm, preferably close to 0 μm, is guaranteed process-reliable over the entire manufacturing process, which in turn results in a low tilt play with simultaneously low frictional torque of the bearing.

Subsequently, the inner contour of the bearing sleeve 8 in the region of Endab¬ section 10 with such and substantially radially outwardly gerich¬ ended force F acted that the intended positive connection of the bearing sleeve 8 with the retaining ring 11 due to a plastic deformation of the material of the end portion 10 of the bearing sleeve 8 is achieved against the bore 13 of the retaining ring 11. As a result, as already explained above, the material of the end section 10 of the bearing sleeve 8 conforms to the inner contour of the bore 13 or penetrates into the described structuring the same as far as possible.

As regards the plastic deformation of the material of the end section 10 of the bearing sleeve 8 or the application of force to the inner contour of the sleeve bore 12, an expander tool 17 which can be inserted axially into the sleeve bore 12 is expediently used for this purpose. Suitable expansion tools 17 are known per se and can be operated hydraulically, pneumatically or electromechanically.

According to FIGS. 3 a to 3 f, the expansion tool 17 can be formed, for example, by a punch 18, which in turn is designed with an excess of the sleeve bore 12 such that a radial force F is applied to the sleeve bore 12 during the axial insertion of the punch 18 into the sleeve bore 12 Inner contour thereof can be applied.

It is understood by those skilled in the knowledge of the invention by itself that in addition to the radial force component and an axial force component acts on the material of the bearing sleeve 8, so that it has proved to be useful, at least the retaining ring 11 during the joining operation at least in the axial direction to fix.

Depending on the above-described surface structures of the bore 13 of the retaining ring 11, the stamp 18 can have a spherical (FIG. 3 a), a hemispherical (FIG. 3 b), a cylindrical (FIG. 3 c), a cylindrical shape with an insertion bevel (FIG. Fig. 3d), a spherical cylindrical central portion (Fig. 3e), a spherical with insertion bevel (Fig. 3f), or any other suitable design.

Furthermore, it is also conceivable and is detected by the invention that the expansion tool 17 by a known per se and by means of a Spreizdor- nes radially expandable expansion element is formed (not shown in detail). The above exemplary embodiments make reference to a roller bearing in the form of an axial bearing 1. The essential idea of the invention, namely to provide a joining connection between a first component in the form of a bearing sleeve 8 and at least one second component provided with a bore 13 and threaded onto the bearing sleeve 8, in which case the second component is substantially radially inward outside on the inner contour of the sleeve bore 12 wir¬ kenden force F and a resulting plastic deformation of the material of the bearing sleeve 8 is positively connected thereto, is not only for fixing a retaining ring 11 on a bearing sleeve 8 of a Axial¬ storage composite, but also to determine from other bearing components, such as the outer discs 5 and 6, on the bearing sleeve 8 an¬ applicable, with a restriction to thrust bearing 1 does not exist.

Likewise, in addition to many other possible applications in which a component provided with a bore 13 is to be threaded onto a bearing sleeve 8 and fixedly connected to it, for example, it is conceivable that the described method also be used in the electrical industry for the definition and fitting of Use circuit boards on corresponding bearing sleeves 8.

List of reference numbers

thrust

Wälzkörperkranz

Rolling ring Middle running disk Outer running disk Outer running disk Cylindrical portion (bearing sleeve 8)

bearing sleeve

support flange

End section (bearing sleeve 8)

retaining ring

sleeve bore

Bore (retaining ring 11)

mid-axis

increments

Phase transition

flaring

stamp

force

Claims

claims

1. Connecting arrangement between a first component in the form of a La¬ gerhülse (8) and at least one provided with a bore (13) and on the bearing sleeve (8) threaded second component, characterized in that the second component as a result of a substantially radially on the outside of the inner contour of the sleeve bore (12) wirk¬ the force and a resulting plastic deformation of the material of the bearing sleeve (8) is connected to the same form-fitting manner.

2. Connecting arrangement according to claim 1, characterized in that the second component is formed by a bearing component of a rolling bearing or other bearing, a printed circuit board or otherwise with a La¬ gerhülse (8) to be connected component.

3. Connecting arrangement according to claim 2, comprising a rolling bearing in the form of a thrust bearing (1), with two coaxially arranged Wälzkörperkränzen (2, 3), in turn, each between a middle and an outer running disk (4, 5, 6) of the thrust bearing ( 1) and with their receiving bore on a largely cylindrical Ab¬ section (7) of the first component in the form of the bearing sleeve (8) are radially abge¬ supported, wherein the bearing sleeve (8) at one end a radially parked support flange (9) to which the composite of the Wälzkörper¬ wreaths (2, 3) and the running wheels (4, 5, 6) axially abuts and ander- nenden a cylindrical end portion (10) for receiving the second component for the axial cohesion of this composite of Wälzkör¬ perkränzen (2, 3) and running disks (4, 5, 6), characterized gekenn¬ characterized in that the second component is a retaining ring (11) and this Halte¬ ring (11) due to a substantially radially outward ßen force (F) acting on the Innenkqntur the sleeve bore (12) in the region of the end portion (10) of the bearing sleeve (8) and resulting plastic Deformation of the material of the end portion (10) of the bearing sleeve (8) is connected to the same form-fitting manner.

4. Connecting arrangement according to one of claims 1 to 3, characterized in that the bore (13) of the second component bezie¬ tion retaining ring (11) is formed evenly or surface-structured aus¬.

5. Connecting arrangement according to claim 4, characterized in that a uniform bore (13) to the support flange (9) is reduced towards continuously in diameter.

6. Connecting arrangement according to claim 4, characterized in that a surface-structured bore (13) of the second component or retaining ring (11) by one or more Stufen¬ jumps (15) of the inner diameter is formed.

7. Connecting arrangement according to claim 6, characterized in that the one or more increments (15)

a gradation in the direction of the support flange (9) from the higher to the lower diameter,

one or more annular steps, and / or

- One or more threads are formed.

8. Connecting arrangement according to claim 7, characterized in that the increments (15) are sharp, rounded or formed with a Phasen¬ transition (16).

9. Connecting arrangement according to one of claims 3 to 6, characterized in that the radially outward on the inner contour of the sleeve bore (12) in the region of the end portion (10) of the bearing sleeve (8) acting force (F) by means of a Aufweitwerkzeugs (17) is feasible.

10. Connecting arrangement according to claim 9, characterized in that the expansion tool (17) is hydraulically, pneumatically or electromechanically operable.

11. Connecting arrangement according to claims 9 or 10, characterized ge indicates that the expansion tool (17) by an axially into the sleeve bore (12) insertable punch (18) is formed.

12. Connecting arrangement according to claim 11, characterized in that the punch (18) is designed such that during the axial insertion of the punch (18) into the sleeve bore (12) a radial force on the inner contour of the same can be applied.

13. Connecting arrangement according to claim 12, characterized in that the punch (18) has a spherical, hemispherical, zylinderför¬ mige, cylindrical with lead-in, spherical with cylindrical center section, spherical with insertion or any other suitable design with excess.

14. Connecting arrangement according to one of claims 9 to 10, characterized in that the expansion tool (17) is formed by a means of an expanding mandrel radially expandable expansion element.

15. A method for producing a connection arrangement according to one of claims 1 to 14, in particular for producing an axial bearing (1), characterized by the following steps to be carried out successively:

- provision of a largely cylindrical bearing sleeve (8) with a one end radially parked support flange (9) and fixing the same in the radial and axial directions.

- Threading of Wälzkörperkränzen (2, 3) and pulleys (4, 5, 6) on the cylindrical portion (7) of the bearing sleeve (8) in the direction of the support flange (9).

Threading a holding ring (11) provided with an even or structured bore (13) onto the end section (10) of the bearing sleeve (8) against the composite of rolling element crowns (2, 3) and running disks (4, 5, 6) and Acting with a defined axial force, and

- Actuation of the inner contour of the sleeve bore (12) in the region of the end portion (10) of the bearing sleeve (8) with such and substantially radially outward force (F) that a positive connection of bearing sleeve (8) and retaining ring (11) as a result of a plastic deformation of the material of the end portion (10) of the bearing sleeve (8) against the bore (13) of the retaining ring (11) is achieved.

16. The method according to claim 15, characterized in that a force and / or positive connection between the bearing sleeve (8) and retaining ring (11) is realized such that material of the end portion (10) of the bearing sleeve (8) largely to the inner contour of Bore (13) of the retaining ring (11) hugs or in structuring the same wei¬ least penetrates.

17. The method according to claim 15, characterized in that a der¬ like axial force is applied to the retaining ring (11), that a Axial¬ game ≤ 5 microns is guaranteed ge process reliable over the entire manufacturing process.

18. The method according to any one of claims 15 to 17, characterized gekennzeich¬ net, that at least the retaining ring (11) during the plastic Verfor¬ tion of the material of the end portion (10) at least in the axial direction Rich¬ to the bearing sleeve (8) is fixed.

19. The method according to any one of claims 15 to 18, characterized gekennzeich¬ net, that for plastic deformation of the material of the end portion (10) of the bearing sleeve (8) axially into the sleeve bore (12) insertable expansion tool (17) is used.