Cage segment for rolling bearing and rolling bearing
By designing a cage section with a specific structure, the problem of stable support for heavy rolling components in large rolling bearings was solved, achieving a low-cost and low-weight cage design, and improving mechanical stability and service life.
Patent Information
- Application Number
- CN202422195639.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2023-09-12
- Filing Date
- 2024-09-09
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-09-09
AI Technical Summary
When facing increasingly higher mechanical loads, existing rolling bearings require more stable cage designs to support the heavy rolling components, and it is difficult to ensure both low cost and low weight in cage design.
Design a cage section for rolling bearings, having a circumferential web and connecting web with a specific structure, including guide surfaces with straight and curved designs for stably receiving and guiding rolling components, and made of lightweight materials such as polyetheretherketone or light metals, manufactured by casting.
It achieves stable support for heavy rolling components in large rolling bearings, reduces cage weight and cost, and provides high mechanical stability and long service life.
Smart Images
Figure CN223767946U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present utility model relates to a cage segment for a rolling bearing. The present utility model also relates to a rolling bearing, in particular a roller bearing, for mounting a first machine part to be rotatable relative to a second machine part, in particular for rotatably mounting a rotor shaft in a wind power installation. BACKGROUND
[0002] In view of the increasing demand for larger and larger rolling bearings, for example for wind power installations, cage concepts are required which are suitable for increasingly high mechanical loads. The dead weight of the rolling members used will increase with the size of the rolling bearing. Likewise, the diameter of the rolling members used can be made larger in order to achieve a higher load rating for the rolling bearing at the same rolling bearing size. However, the dead weight of the rolling members also typically increases with increasing diameter of the rolling members. In view of the higher dead weight of the rolling members, therefore, increasingly stable cage assemblies are required.
[0003] The present utility model is based on the object of specifying a cage design which is suitable for large rolling bearings in which rolling members having a large dead weight are used. SUMMARY
[0004] The object is achieved by a cage segment for a rolling bearing as described below.
[0005] In the following, a cage segment ( / cage segment) for a rolling bearing, in particular for a roller bearing, is proposed. The rolling bearing may, for example, be a cylindrical roller bearing, a tapered roller bearing or the like. The cage segment comprises two mutually opposite circumferential webs and at least two mutually opposite connecting webs, the connecting webs connecting the two circumferential webs to one another and jointly with the circumferential webs forming at least one pocket for receiving a rolling member. The circumferential webs may, in each case, extend between a first circumferential end and a second circumferential end of the cage segment. In particular, the circumferential webs may, in each case, start at one of the connecting webs and end at one of the connecting webs. The circumferential webs can have dissimilar lengths. Furthermore, the connecting webs can have dissimilar lengths.
[0006] The circumferential web and the connecting webs have pocket sides delimiting the pockets and ambient sides opposite the pocket sides. At least one of the connecting webs has at least one first guide face at its pocket side and a second guide face at its ambient side. The at least one first guide face and the at least one second guide face herein have at least one first portion running straight in the radial direction, wherein the at least one first guide face has at least one second portion running in the direction of the rolling members received in the pockets and the at least one second guide face has at least one second portion running in the direction of the rolling members resting on the ambient side of the cage segment, wherein the second portion of the first guide face is arranged radially on a first side of a reference circle and the second portion of the second guide face is at least partially arranged radially on a second side of the reference circle opposite the first side.
[0007] The reference circle is the circle on which the center of the rolling members moves when the rolling bearing is in use. Furthermore, the term "first portion runs straight in the radial direction" is to be understood as meaning that the first portion runs substantially along the radial direction without any curvature. Furthermore, the first guide face and the second guide face can at least partially be designed to partially encompass the rolling members in the circumferential direction of the rolling members.
[0008] It is preferable that the first side of the reference circle is located radially on the inside and the second side of the reference circle is located radially on the outside. Furthermore, the second portion of the first guide face and the second portion of the second guide face can be designated as raising the cage segment, for example, in order to avoid excessive contact between a portion of the cage segment and a portion of the rolling bearing, such as, for example, a raceway. For this purpose, the shape of the second portion of the second guide face can in particular be chosen such that the cage segment is raised to the extent that the second portion of the second guide face does not come into contact with the second portion of the first guide face, and vice versa.
[0009] The advantage of the cage segment is that it is suitable for use in very large rolling bearings and withstands the loads arising therein. In particular, the cage segment can be used in rolling bearings using rolling members having a large dead weight. Furthermore, the cage segment is distinguished in that it can be assembled very easily, while at the same time providing low costs and low weight. The pocket shape enables the rolling members to be reliably received and enables the cage segment to be reliably guided on the rolling members.
[0010] According to one preferred embodiment, the second portion can be designed concave or wrapping, respectively. This means that the second portion can have a curvature adapted to the rolling member. Thus, for example, a rotation of the cage segment about the axis of rotation of the rolling member can be reduced or prevented.
[0011] Alternatively, the second portion can be designed straight. If the second portion is designed straight, the second portion can extend at an inclination angle of between 10° and 37.5°, preferably between 15° and 32.5°, with respect to the radial direction. Thus, for example, a rotation of the cage segment about the axis of rotation of the rolling member can be reduced or prevented.
[0012] Moreover, the first guide surface can also have at least one third portion which is arranged in the radial direction between the first portion of the first guide surface and the second portion of the first guide surface and is contactless with respect to the rolling member.
[0013] According to another preferred exemplary embodiment, the second portion of the second guide surface is connected to the first portion of the second guide surface. Furthermore, the second guide surface can have at least one third portion which extends in the direction of the rolling member resting on the circumferential side of the cage segment and is arranged on the side of the first portion of the second guide surface opposite the second portion. This can make it possible to lift the cage segment, for example, to avoid excessive contact between a portion of the cage segment and a portion of the rolling bearing, such as, for example, a raceway. The third portion of the second guide surface preferably has the same shape as the second portion of the second guide surface. Alternatively, the third portion of the second guide surface and the second portion of the second guide surface can have different shapes. In particular, the third portion of the second guide surface can have a curvature adapted to the rolling member. Alternatively, the third portion of the second guide surface can be designed straight.
[0014] Furthermore, the first guide surface and the second guide surface, in particular their second portions, can have the same or different shapes. All connecting webs can be designed identically on their cage segment side and / or circumferential side.
[0015] The first guide surface and the second guide surface can be designed for frictional contact with the rolling member. The first guide surface and the second guide surface can in each case enclose the same circumferential region of the rolling member. Alternatively, one of the guide surfaces can enclose a larger circumferential region of the rolling member than the other guide surface.
[0016] The first and second guiding surfaces can extend across a portion of the length of the web, in particular at least 30%, preferably 50%, even more preferably 60%, even more preferably 75%, even more preferably 90% of the length of the web, on the peripheral side and / or on the cage pocket side of the web.
[0017] The circumferential web and the connecting web can each have an inner raceway side and an outer raceway side, the inner raceway side pointing towards the inner rolling element raceway of the rolling bearing in the mounted state of the cage segment, the outer raceway side pointing towards the outer rolling element raceway of the rolling bearing in the mounted state of the cage segment. The inner raceway side and / or the outer raceway side of the circumferential web can in each case be formed as a flat surface, a convex surface, a concave surface and / or a gap surface in the region of the same cage pocket. The inner raceway side and / or the outer raceway side of the connecting web can be formed as a flat surface, a convex surface, a concave surface and / or a gap surface.
[0018] The cage segment can exactly have one cage pocket. A cage segment designed in this way is distinguished by a particularly high level of mechanical stability and a high degree of universality in use.
[0019] The cage segments can be made of a plastic material and / or a metal. The cage segments are preferably made by a casting method. For example, the cage segments can be formed by an injection-moulding method and / or a die-casting method. Cage segments formed in this way are distinguished in particular by their low weight, their cost-effective production (cost-effective production) and comparatively high flexibility (relatively high flexibility). The cage segments can in particular be made of polyamide, partially aromatic polyamide, polyether ether ketone, polyether sulfone, polyether imide, polyaryletherketone, poly(methyl methacrylate), polyvinyl chloride, polyurethane, acrylonitrile butadiene styrene, polylactate, polycarbonate, polyethylene terephthalate, polyethylene, polypropylene, polystyrene, polyphthalamide, polyacetal, polyphenylene sulfide, polyimide, polyamide-imide, polysulfone, polyphenylene ether, polyaramid, polybenzimidazole, polytetrafluoroethylene, polyvinylidene fluoride or a liquid-crystalline polymer. The cage segments are particularly preferably made of polyphenylene sulfide or polyether ether ketone. These two materials are distinguished by high ageing resistance and long service life, so that the cage segments can be used over very long operating periods. Furthermore, the cage segments can be formed from light metals and / or light metal alloys, such as, for example, aluminium, aluminium alloys, titanium, titanium alloys, magnesium, magnesium alloys and the like. Alternatively or additionally, the cage segments can be made of fibre-reinforced plastic materials and / or metal-reinforced plastic materials. For example, the metal frame can be overmoulded with a plastic material to obtain the cage segment.
[0020] According to a further preferred embodiment, the at least one connecting web has a first region and a second region in the axial direction on the peripheral side and / or on the cell side. For example, a recess extending in the radial direction can be provided between the first region and the second region. Furthermore, the connecting web can have a first thickness in the first region and a second thickness in the second region in the circumferential direction, wherein the first thickness and the second thickness are different or identical. This can allow the play between the rolling member and the cage segment to be adjusted. In particular, if the rolling member is a conical roller, the play between the cage segment and the large diameter of the conical roller can be set independently of the play between the cage segment and the small diameter of the conical roller. Furthermore, it is also possible to respond to variations caused by manufacturing tolerances and / or the size of the end gap can be set when the first thickness and the second thickness change together. Furthermore, the angle at which the two connecting webs extend relative to one another can also be easily set, so that the same casting mould can be used for the cage segment for a conical roller as well as for a cylindrical roller.
[0021] The cage segment can preferably be guided by rolling members and / or rings and have at least one guide shoe which is arranged on at least one connecting web and / or on a circumferential web and is designed to guide the cage segment on at least one portion of the bearing ring. For example, the portion of the bearing ring can be a shoulder of the bearing ring. In particular, the guide shoe can be formed as a protrusion which is arranged for supporting the cage segment on at least one portion of the bearing ring. The portion of the bearing ring, for example the shoulder, can be formed on the inner ring and / or on the outer ring. For example, the at least one guide shoe can be arranged in the region of a corner of the cage segment, i.e. in the region where the circumferential web and the connecting web meet one another. Alternatively, the at least one guide shoe can be arranged on the circumferential web.
[0022] The cage segment can have a marking for unambiguous identification of the mounting position. This facilitates mounting the cage segment in the correct position in the rolling bearing.
[0023] According to a further preferred embodiment, the at least one circumferential web has a radially extending recess on the cage side which is designed to separate the cage side of the circumferential web into a first portion and a second portion. The first portion of the circumferential web and the second portion of the circumferential web can in particular be designed as contact faces for the end sides of the rolling members.
[0024] If the cage segment is produced by a casting method, in particular an injection molding method, a gate mark can preferably be located between the two portions, i.e. in the radially extending recess. This has the advantage that the rolling members do not come into contact with the gate mark. As a result, for example, the gate mark can have a larger design. As a result of this fact, a filling and pressure behavior which fully meets the requirements of injection molding can be achieved without restriction. Alternatively, the gate mark can also be arranged in other positions. For example, the gate mark can be arranged on the peripheral side of the at least one circumferential web. This likewise has the advantage that the rolling members do not come into contact with the gate mark and the gate mark can advantageously have a larger design. It is also possible to arrange the gate mark on the inner raceway and / or outer raceway side of the cage segment which is opposite the raceway. Since any contact with the rolling members can also be advantageously avoided in this case, the above-mentioned advantages are likewise achieved.
[0025] Furthermore, the at least one circumferential web can have at least one groove on the at least one radial edge, which is designed to direct lubricant to the rolling members received in the pockets. This makes it possible to introduce a sufficient amount of lubricant into the pockets.
[0026] The utility model also relates to a rolling bearing for mounting a first machine part to be rotatable relative to a second machine part. The rolling bearing has rolling members, which each have an axis of rotation. Furthermore, the rolling bearing has cage segments, which each receive at least one rolling member and each have a first circumferential end and a second circumferential end. The cage segments are lined up next to one another in the circumferential direction of the rolling bearing in such a way that one rolling member is arranged between each two cage segments in each case, which rolling member is not received in a cage segment and permanently prevents physical contact between the two cage segments.
[0027] Rolling bearings of this type of design are distinguished by good running characteristics and a long service life.
[0028] The cage segments can be guided by the rolling members and / or the rings. This has the advantage that a high precision and low-wear guidance can be achieved.
[0029] The individual cage segments are preferably not mechanically connected to one another. This has the advantage that the cage segments are displaceable relative to one another, so that deformation and increased friction and increased wear in the process can be avoided. Furthermore, it is possible by means of the individual cage segments to achieve an isolation of the loads acting on the respective cage segment, i.e. no loads from the rolling members of other regions act on the circumference of the cage segment.
[0030] Further advantages and advantageous embodiments are set out in the description, the drawings and the claims. The combinations of features set out in the description and the drawings are purely exemplary and are not intended to restrict the features to the combinations alone, but rather the features can also exist individually or in other combinations. BRIEF DESCRIPTION OF DRAWINGS
[0031] The utility model will be described in more detail below by means of the exemplary embodiments shown in the drawings. The exemplary embodiments and the combinations shown in the exemplary embodiments herein are purely exemplary and are not intended to restrict the scope of protection of the utility model. The scope of protection of the utility model is defined solely by the attached claims.
[0032] In the drawings:
[0033] Figure 1 Fig. 1 shows a schematic view of a rolling bearing according to a first exemplary embodiment;
[0034] Figure 2 Fig. 2 shows a first perspective view of a cage segment for a rolling bearing according to the first exemplary embodiment;
[0035] Figure 3 Fig. 3 shows a second perspective view of a cage segment for a rolling bearing according to the first exemplary embodiment;
[0036] Figure 4 Fig. 4 shows a lateral view of a cage segment for a rolling bearing according to the first exemplary embodiment;
[0037] Figure 5 Fig. 5 shows a front view of a cage segment for a rolling bearing according to the first exemplary embodiment;
[0038] Figure 6 Fig. 6 shows a perspective view of a cage segment for a rolling bearing according to a second exemplary embodiment;
[0039] Figure 7 and Figure 8 Fig. 7 shows a schematic view of different exemplary embodiments of a first guide face for a cage segment;
[0040] Figure 9 and Figure 10 Fig. 8 shows a schematic view of different exemplary embodiments of a second guide face for a cage segment;
[0041] Figure 11 Fig. 9 shows a lateral view of a cage segment for a rolling bearing according to a third exemplary embodiment; and
[0042] Figure 12 Fig. 10 shows a perspective view of a cage segment for a rolling bearing according to a fourth exemplary embodiment.
[0043] List of reference signs
[0044] 1 rolling bearing
[0045] 2 inner ring
[0046] 4 guide rim
[0047] 6 inner raceway
[0048] 8 outer ring
[0049] 10 outer raceway
[0050] 12 Rolling components
[0051] 13 First circumferential end
[0052] 14 Second circumferential end
[0053] 20 cage sections
[0054] 22-circumferential web
[0055] 24 Connecting webs
[0056] 26. Cavity
[0057] 28 First guiding surface
[0058] 30 Second guiding surface
[0059] Part 1, 32, 34
[0060] 33 Reference Circle
[0061] Part Two: 36, 38
[0062] Part Three: 37, 39
[0063] 40 guide shoes
[0064] 42 convexity
[0065] 44 recess
[0066] 46 Part One
[0067] 48 Part Two
[0068] 50 First District
[0069] 52 Second Region
[0070] 54. Depression Detailed Implementation
[0071] In the following text, the same or functionally equivalent elements are provided with the same reference numerals.
[0072] Figure 1 An exemplary embodiment of the rolling bearing 1 according to the present invention is illustrated schematically. The rolling bearing 1 may be, in particular, a roller bearing, such as a cylindrical (shaped) roller bearing or a tapered roller bearing.
[0073] The rolling bearing 1 has an inner ring 2, which has a run-up rim 4 or a guide rim and an inner rolling element raceway 6 or an inner ring raceway.Figure 1 In the illustration, the inner rolling member raceway 6 is partially obscured by the raised edge 4. Furthermore, the rolling bearing 1 has an outer ring 8, which has an outer rolling member raceway 10 or an outer ring raceway. Additionally, the rolling bearing 1 has a set of rolling members 12 that roll on the inner rolling member raceway 6 and the outer rolling member raceway 10. In operation, the rolling members 12 rotate about their axis of rotation (not shown), and the rolling members 12 are designed to be rotationally symmetrical about the axis of rotation. Furthermore, the rolling members 12 extend axially up to the raised edge 4 with respect to their axis of rotation. Furthermore, the rolling bearing 1 has a plurality of cage sections 20, which, in the exemplary embodiment shown, each accommodate one rolling member 12.
[0074] However, rolling members 12 are arranged in the cage section 20 only every other second, in such a way that a cage section 20 with rolling members 12 and a rolling member 12 without a cage section 20 alternate in the circumferential direction of the rolling bearing 1. In each case, consecutive cage sections 20 in the circumferential direction are permanently spaced apart by a rolling member 12. This means that the cage sections 20 will not physically contact each other regardless of the corresponding operating state of the rolling bearing 1.
[0075] exist Figure 1 In the exemplary embodiment shown, the cage segment 20 is guided by a rolling member, i.e., the cage segment 20 is supported on the rolling member 12. Alternatively, the cage segment can also be guided on the inner ring 2 or the outer ring 8. Furthermore, so-called mixed guiding can be provided, in which the cage segment 20 is guided by both the rolling member and the ring. Figures 2 to 12 Explain the details related to the design of cage section 20.
[0076] The inner ring 2 can be arranged on a shaft (not shown), for example. In particular, the shaft can be the rotor shaft of a wind power installation. The outer ring 8 can be arranged in a housing (not shown), which can be a component of the rotor mounting of a wind power installation.
[0077] Figures 2 to 5A first exemplary embodiment of a cage segment 20 is shown in a perspective view. The cage segment 20 has two circumferential webs 22 which are arranged at a mutual distance and which, in the mounted state of the cage segment 20, extend in the circumferential direction of the rolling bearing 1.
[0078] Furthermore, the cage segment 20 has two connecting webs 24 which are arranged at a mutual distance and which connect the two circumferential webs 22 to each other. In this way, a pocket 26 for receiving one rolling member 12 is formed. Depending on whether the rolling members are cylindrical rollers or conical rollers, the two connecting webs extend in a mutually parallel or slightly inclined manner with respect to each other. In the case of a conical roller bearing, the two circumferential webs 22 have a different length and the pocket 26 has the shape of an isosceles trapezoid. In the case of a cylindrical roller bearing, the two circumferential webs 22 have the same length and the pocket 26 has the shape of a rectangle. The length of a circumferential web 22 is to be understood as the outer dimension of the circumferential web 22 from a first circumferential end 13 up to a second circumferential end 14 of the cage segment 20. If the first circumferential end 13 and the second circumferential end 14 of a circumferential web 22 are not oriented mutually parallel in each case, the arithmetic mean value of the external dimension can be used in each case.
[0079] The sides of the circumferential webs 22 and the connecting webs 24 which delimit the pocket 26 are also referred to in the following as pocket sides. In a similar manner, those sides of the circumferential webs 22 and the connecting webs 24 which are opposite to the pocket sides are also referred to in the following as ambient sides, unless the said sides delimit a further pocket 26. This condition is usually fulfilled in the case of the circumferential webs 22 only if this is a cage segment 20 with multiple rows, wherein multiple rolling members 12 are arranged axially behind each other. In the case of the connecting webs 24, this condition is fulfilled in each case when the respective connecting web 24 is arranged in the region of the first circumferential end 13 or the second circumferential end 14 of the cage segment 20, i.e. for the first and the last connecting web 24 of the cage segment 20 with respect to the circumferential direction of the rolling bearing 1. Since Figures 2 to 12 The exemplary embodiment of the cage segment 20 shown in Fig. 1 has only a single pocket 26, so that in this exemplary embodiment each circumferential web 22 and each connecting web 24 has one pocket side and one ambient side in each case.
[0080] As already mentioned, the circumferential web 22 of a single-row cage segment 20 has one cage side and one surrounding side in each case when the cage segment 20 has more than one cage pocket 26. In contrast, the connecting web 24 can have one or two cage sides and thus one surrounding side or no surrounding side in each case. The connecting web 24 arranged between two cage pockets 26 has two cage sides without a surrounding side. The connecting web 24 located at an end in the circumferential direction and delimiting only a single cage pocket 26 has one cage side and one surrounding side.
[0081] Close to the cage side and optionally the surrounding side, the circumferential web 22 and the connecting web 24 have an inner raceway side and an outer raceway side in each case, the inner raceway side facing the inner rolling element raceway 6 of the rolling bearing 1 in the installed state, the outer raceway side facing the outer rolling element raceway 10 of the rolling bearing in the installed state.
[0082] The circumferential web 22 is in particular formed in one piece with the connecting web 24. This one-piece design can be achieved, for example, by manufacturing the cage segment 20 as a plastic injection-molded part. Furthermore, the circumferential web 22 and the connecting web 24 end by their surrounding sides to be flush with one another in the region of the first and second circumferential end 13, 14, i.e. the circumferential web 22 does not protrude outward beyond the connecting web 24, and the connecting web 24 does not protrude outward beyond the circumferential web 22.
[0083] The connecting web 24 has a first guide face 28 at its cage side and a second guide face 30 at its surrounding side. The first guide face 28 and the second guide face 30 have a first portion 32, 34 which runs straight in the radial direction. Furthermore, the first guide face 28 has a second portion 36 which extends in the direction of the rolling element received in the cage pocket. The second guide face 30 likewise has a second portion 38 which extends in the direction of the rolling element 12 resting on the surrounding side of the cage segment. The second portion 36 of the first guide face 28 here is arranged radially on a first side of a reference circle 33, and the second portion 38 of the second guide face 30 is at least partially arranged radially on a second side of the reference circle 33 opposite the first side.
[0084] Furthermore, the first guide face 28 also comprises a third portion 37 arranged in the radial direction between the first portion 32 and the second portion 36, wherein the third portion 37 is designed such that it is contactless with respect to the rolling element 12.
[0085] The first guide surface 28 and the second guide surface 30 are designed to guide the cage segment 20 in a sliding manner on the rolling member 12 arranged within the cage segment 20 and on the two rolling members 12 arranged next to the cage segment 20 on both sides. In each case, only the area which is able to come into physical contact with the housing face of the rolling member 12 without the cage segment 20 being deformed in the operating state of the rolling bearing 1 is considered to be part of the first guide surface 28 and the second guide surface 30.
[0086] The first guide surface 28 and the second guide surface 30 have at least one second portion 36, 38 which extends in the direction of the rolling member 12 in the radial direction in each case. As a result of this fact, it is possible for the rolling member to be at least partially encompassed by the guide surfaces 28, 30. In the exemplary embodiment shown in Figures 2 to 7 、 Figure 11 and Figure 12 In the exemplary embodiment shown in Figures 2 to 6 and Figures 10 to 12 In the exemplary embodiment shown in
[0087] The cage segment 20 is guided by the shoulder and has one guide shoe 40 on its corner in each case, the guide shoe 40 being formed as a protrusion and serving to support the cage segment 20 on the shoulder of the inner ring 2. A convexity 42 can be provided between the guide shoes 40, said convexity making it possible for lubricant, in particular lubricating oil, to be delivered to the rolling members 12 received in the pockets 26.
[0088] A radially extending recess 44 is provided on the pocket side of the circumferential web 22, the radially extending recess 44 being designed to divide the pocket side of the circumferential web 22 into a first portion 46 and a second portion 48. The first portion 46 and the second portion 48 of the circumferential web can in particular be designed as contact faces for the end sides of the rolling members 12. If the cage segment 20 is made by means of an injection-moulding method, a gate mark can preferably be located between the two portions 46, 48, i.e. in the radially extending recess 44.
[0089] Figure 6 A perspective view of a cage segment 20 for a rolling bearing 1 according to a second exemplary embodiment is shown. Figure 6the cage segment 20 shown in Figures 2 to 5 differs from the cage segment 20 shown in Figure 6 the cage segment 20 shown in
[0090] Figure 7 and Figure 8 schematically shows different exemplary embodiments of a first guide surface 28 for a cage segment 20.
[0091] As already described with reference to Figures 2 to 5 the first guide surface 28 and the second guide surface 30 have in each case a second portion 36, 38 extending in the direction of the rolling member 12 in the radial direction. As can be seen in Figure 7 , the second portion 36 of the first guide surface 28 can be designed straight. In addition, a third portion 37 can be provided in the first guide surface 28 between the first portion 34 and the second portion 36, which third portion 37 is arranged between the first portion 34 and the second portion 36 in the radial direction and is designed to be non-contacting with respect to the rolling member 12. As an alternative, the second portion 36 of the first guide surface 28 can have a constant-radius or variable-radius curvature, as shown in Figure 8
[0092] Figure 9 and Figure 10 schematically shows different exemplary embodiments of a second guide surface 30 for a cage segment. As can be seen in Figure 9 , the second portion 38 of the second guide surface 30 can be designed straight. The second guide surface 30 can optionally have a third portion 39, as indicated by the dashed line 39, which third portion 39 extends in the direction of the rolling member 12 resting on the peripheral side of the cage segment 20 and is arranged on the side of the first portion 32 of the second guide surface 30 opposite the second portion 38. As shown in Figure 9 , the third portion 39 can have the same shape as the second portion 38 or a different shape from the second portion 38. As an alternative, as shown in Figure 10 , the second portion 38 can have a constant-radius or variable-radius curvature. It is likewise possible for the second guide surface 30 shown in Figure 10 to be provided with a third portion 39 as indicated in Figure 9
[0093] If the second portion 38 or the third portion 39 of the second guide surface 30 is designed straight, the second portion 38 or the third portion 39 of the second guide surface 30 can extend at an inclination angle relative to the radial direction, which is between 10° and 37.5°, preferably between 15° and 32.5°.
[0094] Figure 11 A lateral view of a cage segment 20 for a rolling bearing according to a third exemplary embodiment is shown. Figure 11 The cage segment according to Figures 2 to 5 differs from the cage segment 20 shown in Figure 11 The connecting web 24 in the cage segment 20 has a first region 50 and a second region 52 in the axial direction on the surrounding side, which are separated from one another by a depression 54 extending in the radial direction. Furthermore, the connecting web can have a first thickness in the first region 50 and a second thickness in the second region 52 in the circumferential direction, wherein the first thickness and the second thickness are identical or different. This means that the thicknesses of the two regions 50, 52 can be set independently of one another. This enables the regions 50, 52 to be readjusted independently of one another, for example in the case of variations caused by the casting process. Furthermore, the play between the rolling members 12 and the cage segment 20 can be adapted by the thicknesses of the regions 50, 52.
[0095] Figure 12 A perspective view of a cage segment 20 for a rolling bearing 1 according to a fourth exemplary embodiment is shown. Figure 12 The cage segment according to Figures 2 to 5 differs from the cage segment 20 shown in Figure 12 The cage segment 20 according to has no guide shoes 40 and is therefore guided exclusively by the rolling members.
Claims
1. Cage segment (20) for a rolling bearing (1), in particular for a roller bearing, having two mutually opposite circumferential webs (22) and at least two mutually opposite connecting webs (24) which connect two circumferential webs (22) to one another and together with the circumferential webs (22) form at least one pocket (26) for receiving a rolling member (12), wherein The circumferential webs (22) and the connecting webs (24) have cage sides delimiting the cage cells (26) and have surrounding sides opposite the cage sides, wherein at least one of the connecting webs (24) has at least one first guide surface (28) on its cage side and a second guide surface (30) on its surrounding side, wherein the at least one first guide surface (28) and the at least one second guide surface (30) have at least one first portion (32, 34) extending straight in the radial direction, wherein the at least one first guide surface (28) has at least one second portion (36) extending in the direction of a rolling member (12) received in the cage cell and the at least one second guide surface (30) has at least one second portion (38) extending in the direction of a rolling member (12) resting on the surrounding side of the cage segment (20), wherein the second portion (36) of the first guide surface (28) is arranged radially on a first side of a reference circle (33) and the second portion (38) of the second guide surface (30) is at least partially arranged radially on a second side of the reference circle (33) opposite the first side.
2. Cage segment (20) for a rolling bearing (1) according to claim 1, characterized in that, The second portion (36, 38) has a curvature adapted to the rolling member (12).
3. Cage segment (20) for a rolling bearing (1) according to claim 1, characterized in that, The second portion (36, 38) is designed straight.
4. Cage segment (20) for a rolling bearing (1) according to claim 1, characterized in that, The first guide surface (28) further has at least one third portion arranged between the first portion and the second portion of the first guide surface in the radial direction and is non-contacting with respect to the rolling member.
5. Cage segment (20) for a rolling bearing (1) according to claim 1, characterized in that, The second portion of the second guide surface (30) is connected to the first portion of the second guide surface (30) and the second guide surface (30) further has at least one third portion extending in the direction of a rolling member (12) resting on the surrounding side of the cage segment and arranged on a side of the first portion of the second guide surface opposite the second portion.
6. Retainer segment (20) for a rolling bearing (1) according to claim 1, characterized in that At least one connecting web (24) has at least one first region (50) and one second region (52) in the axial direction on the surrounding side and / or on the cage side, wherein a recess (54) extending in the radial direction is arranged between the first region (50) and the second region (52).
7. Retainer segment (20) for a rolling bearing (1) according to claim 1, characterized in that The cage segment (20) is guided by the rolling member and / or the race and has at least one guide shoe (40) arranged on at least one connecting web (24) and / or circumferential web (22) and designed to guide the cage segment on at least one portion of the bearing race.
8. Retainer segment (20) for a rolling bearing (1) according to claim 1, characterized in that, At least one circumferential web (22) has a recess (44) extending in the radial direction on the cage side, which recess (44) is designed to divide the cage side of the circumferential web (22) into a first portion (46) and a second portion (48).
9. Retainer segment (20) for a rolling bearing (1) according to claim 1, characterized in that, The cage segment (20) is made of a plastic material and / or a metal.
10. Cage segment (20) for a rolling bearing (1) according to any one of claims 1 to 9, characterized in that, At least one circumferential web has at least one groove on at least one radial edge, which is designed to guide lubricant to the rolling elements received in the cavities.
11. Rolling bearing (1), in particular a roller bearing, for mounting a first machine part so as to be able to rotate relative to a second machine part, the rolling bearing (1) having: - rolling elements (12), in particular rollers, each having an axis of rotation; retainer segments (20) each receiving one rolling member (12), wherein - the cage segments (20) are designed according to any one of claims 1 to 10, and wherein the cage segments (20) are arranged close to one another in the circumferential direction of the rolling bearing (1) in such a way that one rolling element (12) is arranged between each two cage segments (20) in each case, the rolling element (12) not being received in a cage segment (20) and permanently preventing physical contact between the two cage segments (20).