DE102021200409A1 - Arrangement and method for the axial fixation of components - Google Patents

Abstract

The invention relates to an arrangement and a method for the axial positioning and axial fixing of a first component (10) on a second component (20) using a wedge ring (50) inserted in an annular groove (21) arranged in the second component (20), which has an inclined support surface (52) which is supported on an inclined support flank (22) of the annular groove (21) of the second component (20). It is proposed that the first component (10) be positioned axially relative to the second component (20) by means of a shim (60) and fixed axially to the second component (20) by means of a series connection of a compensating disc (70) and the wedge ring (50). becomes.

Description

The invention relates to an arrangement and a method for the axial fixing of components according to the preamble of patent claim 1.

Retaining rings or snap rings (company name: Seeger rings) are widely known and are used for the axial fixation of two components, the retaining ring being held in a groove due to its spring tension and being supported against the component to be fixed. Circlips generally have an approximately rectangular cross-section which, viewed over the circumference, can be designed to be variable. Securing rings with a wedge-shaped cross section, so-called wedge rings from the company Seeger Orbis, are also known. This known Seeger wedge ring has a conical support surface which is supported on a conical flank of an annular groove, with a conicity angle of 15° being specified. This prevents the wedge ring from escaping due to self-locking. The support surface of the wedge ring opposite the inclined wedge surface is flat and lies on the component to be supported, e.g. B. a roller bearing. The disadvantage of the wedge rings is that they have to be installed in the right direction because of their asymmetrical cross section.

A combination of such a wedge ring with a flat against the flat side surface of the wedge ring flat disc is from U.S. 4,343,581 known.

Due to the possible variable immersion depth of the wedge ring compared to the depth of the annular groove, wedge rings are used in particular to compensate for an axial play occurring between two components, ie to compensate for axial tolerances specific to the component. The problem here is that there is a relatively large lever arm both at the minimum and at the maximum immersion depth, which can lead to a tilting moment or to the wedge ring being inverted. An application-specific minimum immersion depth of the wedge ring in the ring groove must not be undershot, so that the application-specific occurring axial forces can be reliably transmitted to the component fixing. Accordingly, the maximum possible immersion depth and the minimum immersion depth limit the axial play that can be compensated for by the wedge ring between the two components to be fixed to one another.

Proceeding from this, it is the object of the present invention to improve an arrangement for the axial fixation of components of the type mentioned at the outset in such a way that a comparatively large tolerance range of the axial dimensions relevant for the fixation, which are structurally possible on the components involved, with simple assembly of the retaining ring can be compensated. This object is achieved by a device having the features of patent claim 1. Patent claim 9 describes a method for assembling this device. Further advantageous configurations of the invention result from the dependent claims.

Accordingly, the invention is based on an arrangement for the axial positioning and axial fixing of a first component on a second component using a wedge ring which is inserted into an annular groove arranged in the second component and has an inclined support surface which is located on an inclined support flank of this annular groove of the second component.

Advantageously, the conicity angle on the oblique support surface and the oblique support flank corresponding thereto is dimensioned so small that self-locking is provided, which prevents the wedge ring from escaping from the annular groove of the second component. The immersion depth of the wedge ring in the ring groove of the second component is variable, which compensates for axial tolerances.

According to the invention, the first component is positioned axially relative to the second component by means of a shim and is fixed axially to the second component by means of a series connection of a shim and the wedge ring.

The shim is preferably selected from a set of shims of different thicknesses, which is matched to the structurally possible component tolerances relevant to the axial positioning of the first component relative to an axial contact surface of the second component. Each shim of the set of shims is assigned a shim from a complementary set of shims of different thickness to the shim set such that the sum of the shim thickness and shim thickness is the same for each of these pairings.

A geometric or structural distinguishing feature can be provided in order to be able to better distinguish between the adjusting disk and the compensating disk. For example, a corrugation can be provided on the outside diameter of each shim if each adjusting disk has a smooth cylindrical outside diameter.

Although the axial tolerance compensation that can be achieved using the wedge ring is limited due to the geometry of the wedge ring and ring groove the inventive concept in a particularly advantageous manner the compensation of a comparatively large axial tolerance range consisting of the sum of all individual component tolerances that are relevant for the axial positioning and the axial fixation of the first component on the second component when the first component is mounted on the second component unfold.

The design of the first component is just as arbitrary as the design of the second component. It is also arbitrary whether the first and/or the second component is a rotating component or not. However, if the second component is designed as a rotating component with an annular groove on an outer diameter, it is expedient to provide a mechanical safety device for the wedge ring inserted into this annular groove, which prevents the wedge ring from exiting radially from the annular groove when the second component rotates. Such a safety device can, for example, be an angle disk, the cylindrical section of which encloses the wedge ring concentrically. In the form of a separate component, such an angle washer would then have to be mounted axially between the shim washer and wedge ring. However, in principle it is also possible to design all the shims of the set of shims as angle washers.

In a practical embodiment of the invention, it is provided that the first component - for example a chain wheel of a chain drive - can be rotated on or on the second component - for example a fixed hub or a rotatable shaft - via a roller bearing, which has a first and a second bearing ring is stored. The first bearing ring is supported radially on a bearing seat of the first component and axially on a contact surface of the first component, the first bearing ring being fixed axially on the first component by means of a retaining ring that is inserted into an annular groove arranged in the first component. The second bearing ring, on the other hand, is supported radially on a bearing seat of the second component, with the second bearing ring being arranged axially between the shim and the shim, so that the second bearing ring is axially on the one hand via the shim on the axial contact surface of the second component and on the other hand via the shim and supports the wedge ring axially on the inclined support flank of the ring groove of the second component. In this way, the shim positions the first component in the axial direction relative to the second component, whereas the shim washer, together with the wedge ring, takes over the axial fixation of the first component on the second component.

• • Bereitstellen eines Einstellscheibensatzes mit Einstellscheiben unterschiedlicher Dicke, welcher auf die konstruktiv möglichen Bauteiltoleranzen mit Relevanz für die axiale Positionierung des ersten Bauteils relativ zu einer axialen Anlagefläche des zweiten Bauteils abgestimmt ist;
• • Bereitstellen eines zum Einstellscheibensatz komplementären Ausgleichsscheibensatzes mit Ausgleichsscheiben unterschiedlicher Dicke;
• • Paarung jeder Einstellscheibe des Einstellscheibensatzes mit je einer Ausgleichsscheibe aus dem Ausgleichsscheibensatz derart, dass die Summe aus Dicke der Einstellscheibe und Dicke der Ausgleichsscheibe bei jeder Paarung gleich ist;
• • Ermitteln eines zum Erreichen einer vorgegebenen Soll-Positionierung des ersten Bauteils relativ zum zweiten Bauteil erforderlichen Einstellmaßes mittels Ausmessen des ersten und zweiten Bauteils;
• • Aussuchen einer zu dem ermittelten Einstellmaß passenden Einstellscheibe aus dem Einstellscheibensatz und der dieser Einstellscheibe zugeordneten Ausgleichsscheibe aus dem Ausgleichsscheibensatz;
• • Positionieren des ersten Bauteils an dem zweiten Bauteil unter Verwendung der ausgesuchten Einstellscheibe; und
• • Fixieren des ersten Bauteils an dem zweiten Bauteil unter Verwendung der ausgesuchten Ausgleichsscheibe und Einsetzen des Keilrings in die Ringnut des zweiten Bauteils auf derjenigen Seite der Ausgleichsscheibe, die der Einstellscheibe gegenüber liegt.

The method according to the invention for the axial positioning and axial fixing of the first component on the second component using a wedge ring which is inserted into an annular groove arranged in the second component and has an inclined support surface which is supported on an inclined support flank of the annular groove of the second component includes the following Process steps:

• • Providing a shim set with shims of different thicknesses, which is matched to the constructively possible component tolerances relevant to the axial positioning of the first component relative to an axial contact surface of the second component;
• • Providing a shim set complementary to the shim set with shims of different thicknesses;
• • pairing of each shim of the shim set with a shim from the shim set in such a way that the sum of the thickness of the shim and the thickness of the shim is the same for each pairing;
• • Determination of an adjustment dimension required to achieve a predetermined target positioning of the first component relative to the second component by measuring the first and second component;
• • selecting a shim from the set of shims that matches the setting dimension determined and the shim assigned to this shim from the set of shims;
• • Positioning the first component on the second component using the selected shim; and
• • Fix the first component to the second component using the selected shim and insert the wedge ring into the annular groove of the second component on the side of the shim that is opposite the shim.

If the second component is a rotating component, the method preferably provides as an additional method step that before the wedge ring is inserted into the annular groove of the second component, an angle washer is mounted axially next to the shim washer in such a way that the cylindrical section the angle washer extends axially opposite to the shim.

• 1 ein erstes Ausführungsbeispiel einer erfindungsgemäßen Anordnung;
• 2 die Anordnung gemäß 1 mit eingezeichneten Bauteiltoleranzen;
• 3 die Anordnung gemäß 2 ohne Ausgleichsscheibe; und
• 4 ein zweites Ausführungsbeispiel einer erfindungsgemäßen Anordnung.

The invention is explained in more detail below with reference to the exemplary embodiments illustrated in the figures. Here show:

• 1 a first embodiment of an arrangement according to the invention;
• 2 the arrangement according to 1 with marked component tolerances;
• 3 the arrangement according to 2 without shim; and
• 4 a second embodiment of an arrangement according to the invention.

As a first embodiment of an arrangement according to the invention shows 1 a storage of a sprocket of a chain drive on a fixed - that is, fixed to the housing - hub. The sprocket forms the first component 10 of the arrangement according to the invention and the hub forms the second component 20 of the invention. The chain of this chain drive is denoted by 16, the toothing provided on the sprocket for this chain 16 by 13. In addition to a needle bearing arranged radially below the toothing 13 when viewed in the axial direction, the first component 10 is supported on and on the second component 20 a roller bearing 30 is provided, which, for example, is a ball bearing with a first bearing ring 31 and a second bearing ring 32.

The first bearing ring 31 of the roller bearing 30 is designed as an outer bearing ring, which is supported radially in a cylindrical bearing seat 15 of the first component 10 (here the sprocket). On its side facing the teeth 13, the first bearing ring 31 is supported axially on a contact surface 14 of the first component 10 (here the sprocket). On the other hand, on the side of the first bearing ring 31 facing away from this contact surface 14 (and the toothing 13), a retaining ring 40 is provided, which is inserted into an annular groove 11 of the first component 10 (here the chain sprocket) designed as an inner groove and secures the first bearing ring 31 on the first component 10 (here on the sprocket) fixed in the axial direction.

The second bearing ring 32 of the roller bearing 30, on the other hand, is designed as an inner bearing ring, which is supported radially on a cylindrical bearing seat 25 of the second component 20 (here the hub). On its side facing the toothing 13 of the first component 10 (here the hub), the bearing ring 32 is supported axially via a shim 60 on a contact surface 24 of the second component 20 (here the hub). On the other hand, on its side facing away from this shim 60 (and this contact surface 24), the bearing ring 32 is supported axially via a shim 70 on a straight supporting flank 51 of a wedge ring 50, which in turn fits into an annular groove 21 of the second component 20 (here the Hub) is used and is supported with an inclined support surface 52 axially on a corresponding to this inclined support surface 52 of the wedge ring 50 also inclined support surface 22 of the second component 20 (here the hub).

The thickness of the shim 60 arranged axially between the bearing ring 32 and the support surface 24 is dimensioned such that the first component 10 assumes a predefined axial positioning relative to the second component 20 (here the chain wheel relative to the hub). For this purpose, the built-in shim 60 is selected from a set of shims of different thicknesses, taking into account all the actual component dimensions that are relevant for the correct positioning of the first component 10 on the second component 20 . For this purpose, this shim set is put together in such a way that it enables the correct positioning of the first component 10 on the second component 20 for all structurally permissible axial tolerance positions of the components involved in the bearing.

In order to axially fix the first component 10 (here the sprocket) to the second component 20 (here to the hub) despite the well-known limited tolerance compensation capacity of the wedge ring 50, whose immersion depth in the annular groove 22 of the second component 20 (here the hub) by each shim 60 of the shim set is assigned a special shim 70, which in turn is a set of Shims of different thickness is removed. The assignment of the shim 70 that matches the shim 60 currently required due to tolerances is such that the sum of the thickness of the shim 60 and the thickness of the shim 70 is at least essentially identical for each pairing of a shim 60 with a shim 70.

In the present exemplary embodiment, the structurally permissible axial tolerance band to be taken into account for correct positioning includes the axial tolerance of the chain alignment line relative to the contact surface 24 of the hub, whereas the structurally permissible axial tolerance band to be taken into account for the axial fixation of the sprocket on the hub is the axial tolerance of the contact surface 24 of the Hub considered relative to the inclined contact surface 23 of the hub.

The representations in 2 and 3 prove the advantages of the in 1 shown arrangement according to the invention in a clear manner.

For this shows 2 the arrangement according to 1 with component tolerances drawn in in a self-explanatory manner, the lower axial tolerance limit Tol_u in terms of amount resulting from the body edges of the components involved shown in dashed lines, whereas the axial tolerance limit Tol_o with the upper amount in terms of amount results from the body edges of the components involved shown in dotted lines.

on 2 based shows 3 an arrangement for the axial positioning and axial fixing of 1 and 2 known first component 10 on which also 1 and 2 known second component 30, but without using in the 1 and 2 shim (70) installed axially between bearing ring 32 and wedge ring 50. Compared to the 1 and 2 unchanged, also takes over in 3 the axial positioning of the first component 10 relative to the second component 20 between the contact surface 24 of the second component 20 and the second bearing ring 32 of the roller bearing 30 , which is inserted into this annular groove 21 in order to axially fix the second bearing ring 32 on the second component 20, were 3 the 1 and 2 removed. Out of 3 it is easy to see that without the use of the shim (70), the depth of the annular groove 21 (or the diameter of the groove base 23 of the annular groove 21) is not sufficient to be able to properly assemble the wedge ring 50 if the axial tolerance that is actually to be compensated should deviate from the Approach the value from the lower axial tolerance limit Tol_u. Out of 3 it is also easy to see that without the use of the shim (70) the wedge ring 50 tilts out of the annular groove 21 of the second component 20 if the axial tolerance to be actually compensated for should approach the upper axial tolerance limit Tol_o in terms of value.

At this point it should be noted that the based on the 1 and 2 described device according to the invention with arrangement of shims, shim and wedge ring on an outer diameter of a fixed hub can also be used analogously for an annular groove worked into a bore, i.e. for a first component designed as a housing with a bore in which the second component can be positioned axially and axially is to be fixed.

Of course, based on the 1 and 2 described device according to the invention with an arrangement of shims, a shim and a wedge ring on an outer diameter of a fixed hub, also applicable to an arrangement in which both the first component and the second component are rotatable. In this case, however, it makes sense to secure the wedge ring inserted in an outer groove against the wedge ring escaping from this outer groove due to centrifugal force. An example of this is in 4 shown. Here, an angle washer 80 is inserted axially between the shim 70 and wedge ring 50 in such a way that the cylindrical section 81 of the angle washer 80 extending in the axial direction—ie the offset part of the angle washer 80—encloses the wedge ring 50 concentrically. The radial distance between the outer diameter of the wedge ring 50 and the inner diameter of the cylindrical section 81 of the angle disk 80 is selected in such a way that the wedge ring 50 can be inserted into the annular groove 21, but cannot escape radially from the annular groove 21 under the application-specific centrifugal force.

Reference List

10

first component

11

Ring groove of the first component

12

straight support flank of the ring groove of the first component

13

Interlocking of the first component

14

axial contact surface of the first component

15

Bearing seat of the first component

16

Chain

20

second component

21

Ring groove of the second component

22

inclined support flank of the annular groove of the second component

23

Groove base of the ring groove of the second component

24

axial contact surface of the second component

25

Bearing seat of the second component

26

central axis

30

roller bearing

31

first bearing ring of the roller bearing

32

second bearing ring of the Wälzkager

40

locking ring

41

first support surface of the circlip

42

second support surface of the circlip

50

wedge ring

51

straight support surface of wedge ring

52

inclined support surface of the wedge ring

53

inner cylindrical surface of the wedge ring

54

outer cylindrical surface of the wedge ring

60

Adjusting wheel for positioning

70

Shim for fixation

80

angle washer

81

cylindrical section of the angle washer

Tol_o

upper axial tolerance limit to be compensated

Tol_u

lower axial tolerance limit to be compensated

QUOTES INCLUDED IN DESCRIPTION

This list of the documents cited by the applicant was 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.

Patent Literature Cited

• US4343581 [0003]

Claims (11)

Arrangement for the axial positioning and axial fixing of a first component (10) on a second component (20) using a wedge ring (50) which is inserted into an annular groove (21) in the second component (20) and has an inclined support surface (52). which is supported on an inclined support flank (22) of the annular groove (21) of the second component (20), characterized in that the first component (10) is positioned axially relative to the second component (20) by means of an adjusting washer (60) and is fixed axially on the second component (20) by means of a series connection of a shim (70) and the wedge ring (50). arrangement according to claim 1 , characterized in that the shim (60) is selected from a set of shims (60) of different thicknesses, which is based on the structurally possible component tolerances relevant to the axial positioning of the first component (10) relative to an axial contact surface (24) of the second component (20), each shim (60) of the set of shims (60) being assigned a shim (70) from a complementary set of shims (70) of different thicknesses in such a way that for each of these pairings the sum of the shim thickness and shim thickness is the same. arrangement according to claim 1 or 2 , characterized in that the compensating disk (70) has a geometric or structural distinguishing feature in relation to the adjusting disk (60). arrangement according to claim 1 , 2 or 3 , characterized in that the first component (10) is rotatably mounted on or on the second component (20) via a roller bearing (30) having a first and a second bearing ring (31, 32), the first bearing ring (31) being radially on a bearing seat (15) of the first component (10) and axially on a contact surface (14) of the first component (10) and axially by means of a retaining ring (40) inserted into an annular groove (11) arranged in the first component (10). is fixed to the first component (10), whereas the second bearing ring (32) is supported radially on a bearing seat (25) of the second component (20) and is arranged axially between the adjusting washer (60) and the compensating washer (70), so that the second Bearing ring (32) on the one hand via the shim (60) axially on the axial contact surface (24) of the second component (20) and on the other hand via the compensating washer (70) and the wedge ring (50) axially on the inclined support flank (22) of the annular groove ( 21) of the second component s (20). Arrangement according to one of Claims 1 until 4 , characterized in that the wedge ring (50) is mechanically secured against radial exit from the annular groove (21) of the second component (20), the second component (20) being designed as a rotating or rotatable component whose annular groove (21) on an outer diameter of the second component (20) is arranged. arrangement according to claim 5 , characterized in that the wedge ring (50) is secured against radial exit from the annular groove (21) of the second component (20) by means of an angle washer (80), in that a cylindrical section (81) of the angle washer (80) blocks the wedge ring (50 ) encloses concentrically. arrangement according to claim 6 , characterized in that the angle disc (80) is arranged as a separate component axially between the shim (70) and wedge ring (50). arrangement according to claim 6 , characterized in that each shim (70) of the set of shims is designed as an angle washer. Method for the axial positioning and axial fixing of a first component (10) on a second component (20) using a wedge ring (50) which is inserted into an annular groove (21) in the second component (20) and has an inclined support surface (52). which is supported on an inclined support flank (22) of the annular groove (21) of the second component (20), characterized by the following method steps: providing a shim set with shims (60) of different thicknesses, which is based on the structurally possible component tolerances relevant to the axial Positioning of the first component (10) relative to an axial contact surface (24) of the second component (20) is matched; providing a shim set complementary to the shim set with shims (70) of different thickness; Pairing each shim (60) of the shim set with a shim (70) from the shim set in such a way that the sum of the thickness of the shim (60) and the thickness of the shim (70) is the same for each pairing; Determining an adjustment dimension required to achieve a predetermined desired positioning of the first component (10) relative to the second component (20) by measuring the first and second components (10, 20); Selecting a shim (60) from the set of shims that matches the setting dimension determined and the compensating shim (70) assigned to this shim (60) from the selection equalizer set; positioning the first component (10) on the second component (20) using the selected shim (60); and fixing the first component (10) to the second component (20) using the selected shim (70) and inserting the wedge ring (50) into the annular groove (21) of the second component (20) on that side of the shim (70) , which is opposite the shim (60). procedure after claim 8 , Characterized by use for assembling the device claim 3 , 4 , 5 or 8th . procedure after claim 8 , Characterized by use for assembling the device claim 7 , whereby as an additional method step, before inserting the wedge ring (50) into the annular groove (21) of the second component (20), the angle washer (80) is mounted axially next to the shim washer (70) in such a way that the cylindrical section (81) of the Angle washer (80) extends axially opposite to the shim (70).

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