ADJUSTING SLEEVE FOR A BEARING DEVICE, BEARING DEVICE HAVING AN ADJUSTING SLEEVE, AND METHOD FOR MOUNTING AN ADJUSTING SLEEVE

Abstract

The approach which is proposed here relates to an adjusting sleeve (105) for a bearing device (100) having at least one housing (110) for receiving a bearing sleeve (115), the bearing sleeve (115) for receiving a shaft (120), and the shaft (120). The adjusting sleeve (105) is configured to be capable of being received between the bearing sleeve (115) and the housing (110) and to be thermally conductive. To this end, an outer wall (125) of the adjusting sleeve (105) has at least one outer depression (135) which is configured to produce an outer chamber (140) between the adjusting sleeve (105) and the housing (110) in a received state of the adjusting sleeve (105) in the bearing device (100), and/or an inner wall (130) of the adjusting sleeve (105) has at least one inner depression (145) which is configured to produce an inner chamber (150) between the adjusting sleeve (105) and the bearing sleeve (115) in the received state of the adjusting sleeve (105) in the bearing device (100).

Claims

1. An adjusting sleeve (105) for a bearing device (100), the bearing device (100) having a housing (110) for receiving a bearing sleeve (115), the bearing sleeve (115) for receiving a shaft (120), and the shaft (120), wherein the adjusting sleeve (105) is configured to be received between the bearing sleeve (115) and the housing (110) and to be thermally conductive, characterized in that an outer wall (125) of the adjusting sleeve (105) has at least one outer depression (135), which is configured to produce an outer chamber (140) between the adjusting sleeve (105) and the housing (110) in a received state of the adjusting sleeve (105) in the bearing device (100), and/or an inner wall (130) of the adjusting sleeve (105) has at least one inner depression (145), which is configured to produce an inner chamber (150) between the adjusting sleeve (105) and the bearing sleeve (115) in the received state of the adjusting sleeve (105) in the bearing device (100).

2. The adjusting sleeve (105) as claimed in claim 1, wherein the outer wall (125) of the adjusting sleeve (105) is shaped so as to rest on the housing (110), at least partially running around and/or sealing the housing, in the received state of the adjusting sleeve (105) in the bearing device (100), and/or in which the inner wall (130) of the adjusting sleeve (105) is shaped so as to rest on the bearing sleeve (115), at least partially running around and/or sealing the housing, in the received state of the adjusting sleeve (105) in the bearing device (100).

3. The adjusting sleeve (105) as claimed in claim 2, having a plurality of outer depressions (135), which extend around the entire outer wall (125) and/or a plurality of inner depressions (145), which extend around the entire inner wall (130), in order to allow radially resilient reception of the adjusting sleeve (105) between the housing (110) and the bearing sleeve (115).

4. The adjusting sleeve (105) as claimed in claim 2, in which at least the at least one outer depression (135) is connected fluidically to the at least one inner depression (145) by at least one opening (215) in the adjusting sleeve (105).

5. The adjusting sleeve (105) as claimed in claim 1, which comprises a material that is configured to at least partially absorb a force (800, 900) acting on the bearing sleeve (115).

6. The adjusting sleeve (105) as claimed in claim 1, wherein the adjusting sleeve is shaped to be pressed into the housing (110) in order to produce a frictional and/or nonpositive joint between the adjusting sleeve (105) and the housing (110), and/or to be pressed into the bearing sleeve (115) in order to produce a frictional and/or nonpositive joint between the adjusting sleeve (105) and the bearing sleeve (115).

7. A bearing device (100) comprising the adjusting sleeve as claimed in claim 1, at least one housing (110) for receiving the adjusting sleeve (105), the bearing sleeve (115), and the shaft (120).

8. A method (1200) for mounting an adjusting sleeve (105), wherein the method (1200) has at least the following steps: supplying (1205) the adjusting sleeve (105) as claimed in claim 1; and arranging (1210) the adjusting sleeve (105) between the bearing sleeve (115) and the housing (110) of the bearing device (100), the bearing device having the shaft (120), the bearing sleeve (115) receiving the shaft (120), the adjusting sleeve (105) receiving the bearing sleeve (115), and the housing (110) receiving the adjusting sleeve (105).

9. A control device which is configured to carry out steps of the method (1200) as claimed in claim 8 in corresponding units.

10. A non-transitory computer-readable medium storing instructions that, when executed by a processor of a computer, cause the computer to perform the method (1200) as claimed in claim 8.

11. (canceled)

12. An adjusting sleeve (105) for a bearing device (100), the bearing device (100) having a housing (110) for receiving a bearing sleeve (115), the bearing sleeve (115) for receiving a shaft (120), and the shaft (120), wherein the adjusting sleeve (105) is configured to be received between the bearing sleeve (115) and the housing (110) and to be thermally conductive, characterized in that an outer wall (125) of the adjusting sleeve (105) has at least one outer depression (135), which is configured to produce an outer chamber (140) between the adjusting sleeve (105) and the housing (110) in a received state of the adjusting sleeve (105) in the bearing device (100).

13. The adjusting sleeve (105) as claimed in claim 12, wherein the outer wall (125) of the adjusting sleeve (105) is shaped so as to rest on the housing (110), at least partially running around and/or sealing the housing, in the received state of the adjusting sleeve (105) in the bearing device (100).

14. The adjusting sleeve (105) as claimed in claim 13, having a plurality of outer depressions (135), which extend around the entire outer wall (125), in order to allow radially resilient reception of the adjusting sleeve (105) between the housing (110) and the bearing sleeve (115).

15. An adjusting sleeve (105) for a bearing device (100), the bearing device (100) having a housing (110) for receiving a bearing sleeve (115), the bearing sleeve (115) for receiving a shaft (120), and the shaft (120), wherein the adjusting sleeve (105) is configured to be received between the bearing sleeve (115) and the housing (110) and to be thermally conductive, characterized in that an inner wall (130) of the adjusting sleeve (105) has at least one inner depression (145), which is configured to produce an inner chamber (150) between the adjusting sleeve (105) and the bearing sleeve (115) in a received state of the adjusting sleeve (105) in the bearing device (100).

16. The adjusting sleeve (105) as claimed in claim 15, wherein the inner wall (130) of the adjusting sleeve (105) is shaped so as to rest on the bearing sleeve (115), at least partially running around and/or sealing the housing, in the received state of the adjusting sleeve (105) in the bearing device (100).

17. The adjusting sleeve (105) as claimed in claim 16, having a plurality of inner depressions (145), which extend around the entire inner wall (130), in order to allow radially resilient reception of the adjusting sleeve (105) between the housing (110) and the bearing sleeve (115).

18. The adjusting sleeve (105) as claimed in claim 15, wherein an outer wall (125) of the adjusting sleeve (105) has at least one outer depression (135), which is configured to produce an outer chamber (140) between the adjusting sleeve (105) and the housing (110) in the received state of the adjusting sleeve (105) in the bearing device (100).

19. The adjusting sleeve (105) as claimed in claim 18, wherein the outer wall (125) of the adjusting sleeve (105) is shaped so as to rest on the housing (110), at least partially running around and/or sealing the housing, in the received state of the adjusting sleeve (105) in the bearing device (100).

20. The adjusting sleeve (105) as claimed in claim 19, having a plurality of outer depressions (135), which extend around the entire outer wall (125), in order to allow radially resilient reception of the adjusting sleeve (105) between the housing (110) and the bearing sleeve (115).

Description

DETAILED DESCRIPTION

[0024] Illustrative embodiments of the approach presented here are illustrated in the drawings and explained in greater detail in the following description. In the drawings:

[0025] FIG. 1 shows a perspective cross section of a bearing device having an adjusting sleeve according to one illustrative embodiment;

[0026] FIG. 2 shows a perspective side view of an adjusting sleeve according to one illustrative embodiment;

[0027] FIG. 3 shows a perspective cross section of an adjusting sleeve according to one illustrative embodiment;

[0028] FIG. 4 shows a lateral cross section of a bearing device according to one illustrative embodiment;

[0029] FIG. 5 shows a lateral cross section of a bearing according to one illustrative embodiment;

[0030] FIG. 6 shows a lateral cross section of a bearing device according to one illustrative embodiment;

[0031] FIG. 7 shows a lateral cross section of a bearing device according to one illustrative embodiment;

[0032] FIG. 8 shows a lateral cross section of a bearing device according to one illustrative embodiment;

[0033] FIG. 9 shows a lateral cross section of a bearing device according to one illustrative embodiment;

[0034] FIG. 10 shows a lateral cross section of a bearing device according to one illustrative embodiment;

[0035] FIG. 11 shows a lateral cross section of a bearing device according to one illustrative embodiment; and

[0036] FIG. 12 shows a flow diagram of a method for mounting an adjusting sleeve according to one illustrative embodiment.

DETAILED DESCRIPTION

[0037] In the following description of advantageous illustrative embodiments of the present approach, identical or similar reference signs are used for those elements which are illustrated in the various figures and act in a similar way, while repeated description of these elements is avoided.

[0038] FIG. 1 shows a perspective cross section of a bearing device 100 having an adjusting sleeve 105 according to one illustrative embodiment.

[0039] The bearing device 100 has a housing 110, the adjusting sleeve 105, a bearing sleeve 115 and a shaft 120. The shaft 120 is arranged in a center of the bearing device 100 and received by the bearing sleeve 115. The bearing sleeve 115, in turn, is received by the adjusting sleeve 105, which is designed to be thermally conductive. The housing 110 receives the adjusting sleeve 105.

[0040] The adjusting sleeve 105 has an outer wall 125, which faces the housing 110, and an inner wall 130, which faces the bearing sleeve 115. The outer wall 125 has at least one outer depression 135, which produces an outer chamber 140 between the adjusting sleeve 105 and the housing 110 in the received state of the adjusting sleeve 105 in the bearing device 100. According to this illustrative embodiment, the inner wall 130 of the adjusting sleeve 105 has at least one inner depression 145, which produces an inner chamber 150 between the adjusting sleeve 105 and the bearing sleeve 115 in the received state of the adjusting sleeve 105 in the bearing device 100.

[0041] In bearing devices without the adjusting sleeve 105 presented here, in which the bearing sleeve 115 is firmly clamped in the housing 110, the bearing sleeve 115 cannot expand freely in accordance with its temperature. This hindrance to expansion then, in turn, has effects on a functionally relevant bearing gap between the bearing sleeve 115 and the shaft 120, which is generally only a few micrometers. The different expansions of the bearing sleeve 115 and the housing 110 can be caused by different temperatures or materials with different thermal expansion coefficients. In contrast to O-rings, for example, which are often used as adjusting and damping elements, the adjusting sleeve 105 presented here is advantageously thermally conductive. In this way, it is possible to prevent the bearing sleeve 115 and the shaft 120 being subjected to excessively high thermal stresses. Moreover, the adjusting sleeve 105 presented here can be used at high temperatures of, for example, over 200 C., and a service life of several years for the adjusting sleeve 105 can be achieved. Unlike the situation with other bearing devices, an aging-related change in the position of the bearing sleeve 115 in the housing 110 is also prevented here by the adjusting sleeve 105, for example.

[0042] FIG. 2 shows a perspective side view of an adjusting sleeve 105 according to one illustrative embodiment. This can be the adjusting sleeve 105 described with reference to FIG. 1.

[0043] In a center of the adjusting sleeve 105, the adjusting sleeve 105 according to this illustrative embodiment has a through opening 200. According to this illustrative embodiment, the outer wall 125 has three encircling outer depressions 135, and the inner wall 130 has two encircling inner depressions 145, which are fully visible in FIG. 3. The outer depressions 135 and the inner depressions 145 are designed to allow radially resilient reception of the adjusting sleeve 105 between the housing 110 and the bearing sleeve 115.

[0044] According to this illustrative embodiment, four outer contact surfaces 205, which are arranged in the region of edges of the outer depressions 135, are designed to rest in a sealing manner on the housing 110 when the adjusting sleeve 105 is received in the housing 110. According to this illustrative embodiment, three inner contact surfaces 210, which are fully visible in FIG. 3 and which are arranged in the region of edges of the inner depressions 145, are designed to rest in a sealing manner on the bearing sleeve 115 when the bearing sleeve 115 is received in the adjusting sleeve 105. As an option, the central one of the three outer depressions 135 according to this illustrative embodiment has a plurality of openings 215, which fluidically connect the outer depression 135 either to one of the two inner depressions 145 or to the other of the two inner depressions 145.

[0045] FIG. 3 shows a perspective cross section of an adjusting sleeve 105 according to one illustrative embodiment. This can be the adjusting sleeve 105 described with reference to FIG. 2.

[0046] FIG. 4 shows a lateral cross section of a bearing device 100 according to one illustrative embodiment. This can be the bearing device 100 described with reference to FIG. 1 with one of the adjusting sleeves 105 described in FIGS. 2 and 3.

[0047] In other words, a shaft-bearing system comprising a bearing sleeve 115 and an adjusting sleeve 105 is illustrated in FIG. 4. In the illustrative embodiment, the adjusting sleeve 105 has been pressed into the housing 110. The bearing sleeve 115 has then been pressed into the adjusting sleeve 105. By virtue of the press fits, the bearing sleeve 105 is connected frictionally and thus in a manner secure against rotation to the housing 110.

[0048] This approach describes an adjusting sleeve 105 which is installed between the bearing sleeve 115 and the housing 110. Here, the adjusting sleeve 105 has the task of compensating for thermal expansions of the bearing sleeve 115 and the housing 110. It is furthermore possible, by means of the adjusting sleeve 105, to set the thermal resistance between the bearing sleeve 115 and the housing 110. It is thereby possible to dissipate heat arising in the bearing gap 400 between the shaft 120 and the bearing sleeve 115 selectively into the housing 110 via the adjusting sleeve 105. In this arrangement, the bearing gap 400 can be a fluid film, for example. Given a sufficiently rigid design of the adjusting sleeve 105, it is furthermore possible to absorb forces which can arise during the production of an inner bore of the bearing sleeve 115. In particular, radial machining forces do not lead to deflection of the bearing sleeve 115. Consequently, the inner bore of the bearing sleeve 115 can be produced with greater accuracy. The adjusting sleeve 105 forms various chambers in the form of the outer chambers 140 and inner chambers 150, which can be used selectively with pressure assistance in aerostatic or aerodynamic bearing devices 100, which can also be referred to as bearings. Thus, for example, a fluid can be distributed from a central housing bore of the housing 110 between a plurality of bores in the bearing sleeve 115. By means of the contact surfaces in the form of the outer contact surfaces 205 and the inner contact surfaces 210 of the adjusting sleeve 105 with the housing 110 and the bearing sleeve 115, the chambers 140, 150 are simultaneously sealed off, thereby making it possible to dispense with additional sealing elements, such as O-rings. In the case of aerostatic and aerodynamic bearings, the chambers 140, 150 can furthermore be used as cooling ducts in order to control the temperature of the bearing sleeve 115.

[0049] FIG. 5 shows a lateral cross section of a bearing 500 according to one illustrative embodiment. This can comprise two of the bearing devices 100 described with reference to FIG. 4 with just one shaft 120.

[0050] The shaft-bearing system shown here comprises two radial bearings in the form of the bearing devices 100. When used, for example, in the region of a continuous-flow machine, the shaft 120 is received in at least two radial bearings, as illustrated.

[0051] FIG. 6 shows a lateral cross section of a bearing device 100 according to one illustrative embodiment. This can be the bearing device 100 described with reference to FIG. 4.

[0052] Compensation of thermal expansions is shown. Owing to fluid friction in the bearing gap 400, the arrangement heats up, wherein the individual components of the bearing device 100 can assume different temperatures. Moreover, the components can be composed of materials with different thermal expansion coefficients. The different temperatures and/or materials lead to a radial displacement 600 of the bearing sleeve 115 (2) which can differ from a radial displacement 605 of the housing 110 (1). Owing to the undulating configuration of the adjusting sleeve 105, it has spring properties in the radial direction. This has the following advantages: the different displacements 600, 605 are compensated, the bearing sleeve 115 is positioned in a fixed manner in the housing 110 by virtue of the press fits, the bearing sleeve 115 can expand owing to its temperature and is hardly influenced at all by the rigid housing 110. Consequently, the bearing gap 400 between the bearing sleeve 115 and the shaft 120 remains approximately constant if these two components have the same temperature and are composed of the same material.

[0053] FIG. 7 shows a lateral cross section of a bearing device 100 according to one illustrative embodiment. This can be one of the bearing devices 100 described with reference to FIGS. 4 and 6.

[0054] The arrows 700 show heat flows of heat arising in the bearing gap 400. Owing to the outer contact surfaces 205 and the inner contact surfaces 210 and the thermal conductivity of the adjusting sleeve 105, the heat arising in the bearing gap 400 can be dissipated. This has the following advantages: the temperatures of the bearing sleeve 115 and the shaft 120 are reduced and the housing 110 is heated and expands. As a result, the bearing sleeve 115 is hindered to a lesser extent in its thermal expansion. Consequently, the adjusting sleeve 105 has only to compensate for a small difference in the thermal expansions of the bearing sleeve 115 and the housing 110. The thermal behavior of the overall component in the form of the bearing device 100 can be significantly affected by the thermal resistance of the adjusting sleeve 105. Among the factors by means of which the thermal resistance can be selectively influenced are a material used for the adjusting sleeve 105, a wall thickness of the adjusting sleeve 105 and/or a number and size of the contact surfaces 205, 210.

[0055] FIG. 8 shows a lateral cross section of a bearing device 100 according to one illustrative embodiment. This can be the bearing device 100 described with reference to FIG. 7. The shaft belonging to the bearing device 100 is not shown.

[0056] The figure shows the radial machining forces 800 acting here, which arise during production of inner bores. Given a sufficiently rigid design of the adjusting sleeve 105, it is possible to absorb forces which arise during the production of the inner bore owing, for example, to boring, turning and/or grinding etc. of the bearing sleeve 115. In particular, the radial machining forces 800 do not lead to deflection of the bearing sleeve 115. Consequently, the inner bore of the bearing sleeve 115 can be produced with a very high accuracy.

[0057] FIG. 9 shows a lateral cross section of a bearing device 100 according to one illustrative embodiment. This can be the bearing device 100 described with reference to FIG. 8. The shaft belonging to the bearing device 100 is not shown.

[0058] Axial machining forces 900 which likewise arise during the production of inner bores are absorbed via friction at the contact surfaces 205, 210 of the adjusting sleeve 115.

[0059] FIG. 10 shows a lateral cross section of a bearing device 100 according to one illustrative embodiment. This can be one of the bearing devices 100 described with reference to the above figures.

[0060] Arrows in the bearing device 100 show a supply of a fluid 1000 in a bearing device 100 with pressure assistance, the bearing device being aerostatic or aerodynamic according to this illustrative embodiment. In the aerostatic or aerodynamic bearing device 100 with pressure assistance, the adjusting sleeve 105 forms various chambers in the form of the outer chambers 140 and the inner chambers 150. Thus, the fluid 1000 can be distributed from a central housing bore 1005 of the housing 110 between a plurality of bearing sleeve bores 1010 in the bearing sleeve 115 via the openings 215. By means of the contact surfaces 205, 210 of the adjusting sleeve 105 with the housing 110 and the bearing sleeve 115, the chambers 140, 150 are simultaneously sealed off, thereby making it possible to dispense with additional sealing elements, such as O-rings.

[0061] FIG. 11 shows a lateral cross section of a bearing device 100 according to one illustrative embodiment. This can be one of the bearing devices 100 described with reference to the above figures.

[0062] According to this illustrative embodiment, arrows in the bearing device 100 denote cooling flows 1100 through the bearing device 100. In the case of aerostatic and aerodynamic bearing devices 100, the chambers 140, 150 can furthermore be used as cooling ducts in order to control the temperature of the bearing sleeve 115.

[0063] FIG. 12 shows a flow diagram of a method 120 for mounting an adjusting sleeve according to one illustrative embodiment. This can be a method 1200 for mounting one of the adjusting sleeves described in the preceding figures. In a supply step 1205, one of the adjusting sleeves presented is made available. In an arrangement step 1210, the adjusting sleeve is arranged between a bearing sleeve and a housing of a bearing device, which has at least one shaft, the bearing sleeve for receiving the shaft, the adjusting sleeve for receiving the bearing sleeve, and the housing for receiving the adjusting sleeve.

[0064] If an illustrative embodiment includes an and/or conjunction between a first feature and a second feature, this should be interpreted to mean that the illustrative embodiment has both the first feature and the second feature according to one embodiment and either only the first feature or only the second feature according to another embodiment.