FR3049318A1 - CLUTCH SYSTEM FOR ROLLING BEARING - Google Patents

Abstract

A clogging system for a bearing ring comprising: - a plugging device (12) mountable to extend into a through hole (8) of revolution, and comprising a foot end (15) a head end (14) and a side surface (16), a running surface (42) of the foot end (15) of the plugging device (12) being, when the plugging device (12) extends in a predetermined position, disposed continuously with the surface rolling (7a) of the main body (2 ') and forming with it a raceway for the rolling bodies (5) of the bearing, a fastening system (13) of the plugging device (12) on the main body (2'). ). The fastening system (13) also comprises a depth holding member (27) biasing the end end (14) of the plugging device (12) radially with respect to the transverse axis (Y), in order to place it in contact clamped with the outer circumferential surface of revolution (41) of the through hole (8) at the head end (14).

Description

The invention relates in general to the technical field of bearing rings.

More specifically, the invention relates to the field of rolling body rolling element filling, hereinafter referred to as bearings, comprising two concentric rings.

It is known from the prior art different solutions to fill a row of rolling bodies through a cutout provided on a ring.

In particular, publication DE102008011060 relates to a bearing comprising an inner ring and an outer ring. The inner ring includes a cutout. This cutout allows the filling of rolling bodies in an annular space between the inner and outer rings. A covering member is adapted to overlap the cut. The cover member is attached to the main body of the ring along an axis parallel to the axis of the bearing.

Such an embodiment allows the filling of a row of rolling bodies in a bearing comprising an inner ring and an outer ring.

Alternatively, it is possible to perform a radial filling of the rolling bodies, as for example described in FR 3 007 475. The radial filling requires the passage of the rolling bodies in a through hole formed in the outer ring, then the closure of this hole by a closure device.

The implementation of such plugs can sometimes induce defects in a bearing. In particular, it is useful that the cap reliably undergo the same manufacturing process as the rest of the ring of which it is part, so that, in operation, the presence of a plug is not felt by the rolling body. Thus, the plug faces two opposite problems: it must have a defined position very precisely, and throughout the manufacturing process, and it must be removable / mountable easily to allow the insertion of rolling bodies. In the type of plug described in FR 3 007 475, the position is defined by a pin. which allows the correct orientation and axial positioning of the plug with respect to the outer ring. However, because of the stresses experienced during the manufacturing process and assembly of the bearing assembly, the closure system proposed by this document is in practice difficult to position axially so that it does not interfere with the passage rolling bodies, during its operation.

The present invention thus aims to solve this problem.

Hereinafter, a presentation of the invention.

According to a first aspect, a subject of the invention is a closure system for a bearing ring comprising an annular main body around a bearing axis, and comprising an inner surface and an external surface opposite to the inner surface, one of the inner and outer surfaces being a rolling peripheral surface for rolling bodies of the bearing, the annular main body comprising a through hole of Y-axis revolution extending between the inner and outer surfaces, and having a peripheral surface around the Y-axis, the closure system comprising: a plug-in device mountable to extend into the through-hole of revolution, and comprising a foot end that can be placed at the rolling surface of the main body, a head end opposite to the leading end, when the plugging device is mounted in the through hole of revolution, and a side surface of revolving 1 about a closure axis Z extending between the head and foot ends, a running surface of the foot end of the closure device comprising both a predetermined orientation of the device plugging around the Y axis. and a predetermined depth of the device plugging along the Y axis and being, when the plugging device extends into a predetermined position, disposed continuous with the running surface of the main body and forming with it a raceway for the rolling bodies of the bearing, the head end comprising an elastically deformable portion whose lateral surface is deformable radially, a fastening system of the device plugging on the main body, adapted, in an active state, for fixing the closure device to the main body in a position defined in which the plugging device is in the predetermined position, the system of it can be placed in an inactive state in which the clogging device can be disassembled from the main body, thereby opening the through-hole of revolution to allow rolling bodies of the bearing to pass through the through-hole of revolution, the fastening system comprising a means of indexing in rotation of the end of the foot of the plugging device with respect to the main body around the Y axis, the fastening system also comprises a depth holding member urging the leading end of the device plugging radially relative to the transverse axis, for placing it in close contact with the peripheral surface of the through hole at the head end, characterized in that the elastically deformable portion of the head end of the closure device comprises a first abutment associated with a second abutment of the through hole of revolution defining a p maximum depth of the elastically deformable portion of the head end of the plugging device, and wherein the fastening system is adapted to fix the plugging device to the main body in a defined relative position in which the first stop and the second stop are in support one over the other.

Thanks to these provisions, the sealing device is well maintained throughout the manufacturing process, and very precise mounting is possible. In addition, the deformable portion allows axial positioning of the assembly without undergoing constraints making it difficult to disassemble the plugging device during manufacture, assembly or maintenance of the entire bearing.

According to one embodiment, the rotational indexing means of the closure system comprises a hole formed in the head end of the plugging device and extending along an indexing axis normal to the Y axis, adapted to be aligned with a through-hole formed in the main body in the predetermined position of the plugging device, and a rod extending into and cooperating with the hole in the head end, and extending therefrom to cooperate with the hole of the main body.

According to one embodiment, the fastening system of the closure system comprises a threaded hole formed in the device plugging along the Y axis, and a screw forming the depth-maintaining member, and having a threaded body screwed into the threaded hole and a head wider than the body, the screw being screwed into the device plugging along the Y axis until the head biases the elastically deformable portion of the head end of the device plugging radially with respect to the Y axis .

According to one embodiment, the head has a biasing surface inclined relative to the Y axis, and cooperating with the elastically deformable portion of the head end of the plugging device so that a movement of the head along the Y axis urges the elastically deformable portion of the head end of the device plugging radially with respect to the axis Y.

According to one embodiment, the plugging device consists of a plug, the head end of the plug forming the head end of the plugging device, and the head end of the plug comprising two wings arranged on either side of a plug. receiving space, the depth holding member being placed in the receiving space by biasing the two wings radially with respect to the Y axis.

According to one embodiment, the closure system comprises a stopper and a split elastic washer disposed around the Y axis, forming the elastically deformable portion, disposed on the opposite side to the running surface, bearing on an axial bearing surface of the plug.

In one embodiment, the depth holding member also securely holds the stopper and the split elastic washer together.

In one embodiment, the threaded hole is formed in the head end of the plug, and the head of the screw biases the elastic washer split radially with respect to the Y axis.

According to one embodiment, the hole formed in the head end of the plugging device is formed partially in the plug and communicates with a slot of the split elastic washer.

In one embodiment, the leading end of the plugging device is set back from the outer surface.

According to another aspect, the invention relates to a bearing ring comprising: an annular main body around a bearing axis X, comprising an inner surface and an outer surface opposite to the inner surface, one of the inner surfaces and outer being a peripheral rolling surface for rolling bodies of the bearing, the annular main body including a through hole of Y-axis revolution extending between the inner and outer surfaces, and having a peripheral surface around the Y-axis a plugging system, wherein: the plugging device is mounted to extend into the through hole of revolution, the foot end placed at the rolling surface of the main body, the leading end opposite the head end, the running surface of the foot end of the plugging device being disposed continuous with the running surface of the main body and forming with it a raceway for the rolling bodies of the bearing, the fastening system of the device plugging on the main body, fixing in its active state the device plugging the main body in a defined relative position in which the plugging device is located in the predetermined position, the depth holding member urging the elastically deformable portion of the head end of the device plugging radially with respect to the Y axis to place it in close contact with the peripheral surface of the through hole at the level of the deformable portion.

According to one embodiment, the annular main body further comprises an indexing hole aligned with the indexing axis of the plugging device, the rod extending in and cooperating with the hole in the head end and the d-hole. indexing the annular main body.

According to another aspect, the invention relates to a bearing comprising at least one inner ring, an outer ring, and rolling bodies arranged between the inner and outer rings, and adapted to roll on a running surface of each of the inner rings. and outer, wherein one of the inner and outer rings is a ring as previously described.

According to another aspect, the invention relates to a method of manufacturing a bearing, comprising: providing an annular main body about a bearing axis, comprising an inner surface and an outer surface opposite to the inner surface, one of the inner and outer surfaces comprising a rolling surface blank for rolling bodies of the bearing, the annular main body including a Y-axis through hole extending between the inner and outer surfaces, and having a surface peripheral around the Y axis, there is provided a closure system comprising a closure device comprising a foot end, a leading end and a lateral surface of revolution about a capping axis extending between the head ends and of foot, the closure system further comprising a fixing system of the device plugging on the main body, the mounting device is plugging in the through hole of revolution, with the fastening system, the plugging device is fixed in a predetermined position, comprising both a predetermined orientation of the device plugging around the Y axis and a predetermined depth of the device plugging along the axis Y, in the through hole of revolution, the foot end at the rolling surface blank of the main body, the leading end at the surface opposite to the rolling surface blank, the fastening comprising indexing in rotation of the foot end of the plugging device with respect to the main body around the Y axis, and maintaining the depth by biasing the deformable portion of the head end of the device plugging radially with respect to the Y axis, in close contact with the peripheral surface of the through-hole at the deformable portion of the head end, is corrected; rolling surface blank and the foot end of the plugging device without displacement of the plugging device along the Y axis relative to the annular main body, for generating a running surface of the foot end of the plugging device and a surface of rolling of the main body continuous with each other and together forming a raceway for the rolling bodies of the bearing, the running surface and the foot end of the plugging device are thermally treated, the running surface is corrected and the foot end of the plugging device, the fixing system is placed in its inactive state, and the plugging device of the annular main body is disassembled, the annular main body is assembled to another ring with the interposition of a running space, rolling bodies are introduced into the running space through the through-hole of revolution, the goat device is mounted again hant in the through hole of revolution, and with said fixing system, the plugging device is fixed in the predetermined position.

The figures of the drawings are now briefly described.

Figure 1 is a schematic perspective view in cutaway of a bearing according to one embodiment.

Figure 2 is a schematic perspective view of a plug and a pin portion fitted to the bearing of Figure 1 according to a first embodiment.

FIG. 3 is an exploded perspective view of a plugging device using the plug of FIG.

FIG. 4 is a cross-sectional view along the line IV-IV of FIG.

Figure 5 is a sectional view on the same plane as Figure 4 in the mounted position for the first embodiment.

Figure 6 is a perspective view of the second embodiment.

Figure 7 is a view similar to Figure 5 for the second embodiment.

Figure 8 is a view similar to Figure 5 for a third embodiment.

Hereinafter a detailed discussion of several embodiments of the invention with examples and reference to the drawings.

The present invention relates to bearings. An example of such a bearing 1 is shown in Figure 1. In Figure 1, the bearing 1 is shown with its outer ring 2 cut away, to promote understanding of the invention. Such a bearing 1 conventionally comprises an annular inner ring 3 around an axis X. Such a bearing 1 also comprises an outer ring 2 disposed concentrically with the inner ring 3 about the axis X. A rolling space 4 is provided between the inner and outer rings 3 and 3. The rolling space 4 accommodates rolling bodies 5.

The bearing 1 is intended to be used in a rotating system comprising for example a shaft on which is mounted tight the inner ring 3, and a housing which is assembled the outer ring 2. Thus, the bearing 1 is used to facilitate a movement of respective rotation of the shaft and the housing around the X axis.

As can be seen, in particular in FIG. 1, the inner ring 3 comprises an outer peripheral annular surface 6 facing an inner peripheral annular surface 7 of the outer ring 2. The outer peripheral 6 and inner 7 annular surfaces define between them 4. Each of the outer and inner peripheral annular peripheral surfaces 7 comprises a running surface 6a, 7a, respectively, which is the part of the respective peripheral annular surface which is effectively in contact with the rolling bodies 5 at the same time. use of the bearing. By way of purely illustrative example, there is shown here a particular arrangement of rolling bodies 5. The rolling bodies 5 are all identical cylindrical rollers, each having a cylindrical surface between two end plane faces. Moreover, they each have a length equal to its diameter. The rolling bodies 5 are alternately arranged in two different respective configurations. According to a first configuration, the cylindrical surface of the rolling body 5 rolls on a first portion of the race, while a flat end face of the rolling body 5 slides while rotating on a second portion of the raceway of the same ring. . According to the second configuration, the cylindrical surface of the rolling body 5 rolls on the second portion of the raceway, while a planar end face of the rolling body 5 slides while turning on the first portion of the raceway. Thus, two successive rolling bodies are arranged at an angle of 90 ° with each other along the raceway of the same ring. The rolling bodies 5 thus arranged can be placed with a very high concentration along the raceway and be held in the bearing by themselves without the need for a cage. The rolling bodies 5 may be in point contact two by two at their respective cylindrical surface adjacent two by two.

The rolling bodies 5 are installed in the rolling space 4 through a through hole 8 formed in one of the rings. To fix the ideas, in the following description, consider the through hole 8 formed in the outer ring 2. Thus, the outer ring 2 comprises an annular body 2 'in which is formed through the through hole 8. However, the hole The through hole 8 extends from the inner peripheral annular surface 7 of the outer ring 2 to the opposite outer surface 9 of the outer ring 2. It will be noted that, alternatively, the opposite surface 9 may take any geometry adapted to the desired use. In the example presented, the through hole 8 extends in a direction from the X axis of the bearing and orthogonally thereto. However, depending on the embodiments, it could be otherwise.

In what follows, the term "axial" will be used to designate that which extends along the Y axis of the through hole 8. The term "radial" will be used to designate that which extends orthogonally to the Y axis and from the Y axis.

The through hole 8 has a geometry for passing rolling bodies 5 therethrough from the outside of the bearing to the rolling space 4. According to the arrangement and shape of the rolling bodies 5, the shape of the through hole 8 can be chosen. For example, a through hole of revolution is chosen.

A plugging system is used to plug the through hole 8. When plugged by the plugging system, the through hole 8 can not allow rolling bodies 5 to pass through it between the bearing space 4 and the plug. outside, one way or the other. When the closure system is absent, the rolling bodies 5 can pass through the through hole 8 between the rolling space 4 and the outside, in one direction as in the other.

Figures 2 to 4 show a first example of a closure system according to the invention. This description is given considering a plugging of the outer ring 2. It must be adapted accordingly for a plugging of the inner ring 3. Thus, what is "interior" means what is close to the raceway, and this who is "outside" means that which is distant from it. To begin with, in relation with FIG. 4, it will be noted that the through hole 8 comprises two portions 8a and 8b concentric along the Y axis of the through hole 8, arranged, for a first portion 8a, close to the running surface. 7a and for the second portion 8b remote from the running surface 7a. The second portion 8b has a dimension greater than that of the dimension of the first portion 8a. By dimension, here we consider a dimension in a plane normal to the transverse axis Y of the through hole 8. Therefore, the through hole 8 is provided with a second stop 10 forming a stop at the junction of the two portions 8a and 8b . This second abutment 10 is in particular here a conical seat 10 '.

The closure system 11 comprises two main parts: a plugging device 12 and a fastening system 13. The plugging device 12 has a geometry that allows it to extend into the through hole 8. Thus, it extends along a closure pin Z which coincides with the Y axis of the through hole 8 when the plugging device 12 is mounted in the through hole 8. The plugging device 12 has an opposite end head 14 and a foot end 15 distributed on the along the axis Z. The peripheral peripheral surface 16 of the closure device 12 is complementary to the peripheral surface of the through hole 8, so that the stopper device 12 can extend into the through hole 8 with its opposite end end 14. at its foot end 15, and its foot end 15 at the rolling surface 7a of the outer ring 2. Alternatively, the head end 14 of the plugging device 12 may be This allows the head end 14 not to protrude from the outer surface 9. In particular, the lateral peripheral surface 16 'of the head end 14 may comprise a first stop. 17. The first stop 17 may be in particular a chamfer 17 '. The chamfer 17 'cooperates with the conical seat 10' of the through hole 8 to define a maximum depth at which the stopper 12 extends in the through hole 8.

As can be seen in particular in FIG. 4, the plugging device 12 is made in two separate pieces. The two parts are offset relative to each other along the Z axis: thus, the closure device 12 comprises a plug 18 and a deformable portion 19 which, in this embodiment in particular, is an elastic washer 19 . The foot end 15 of the plugging device 12 comprises the plug 18. The head end 14 of the plugging device 12 comprises the deformable portion 19.

The plug 18 comprises an axially outer bearing surface 20, substantially flat, receiving the spring washer 19 '. The spring washer 19 'is visible in particular in FIG. 3. It comprises an annular body 21 provided with a slot 22. The slot 22 allows a substantially radial deformation of the annular body 21, radially with respect to the axis Z. Moreover, the annular body 21 comprises an axially outer face 23 comprising an obliquely inclined portion 24 extending both towards the Z axis and towards the Y axis. The annular body 21 comprises an axially inner face 25 oriented towards the face radially outer bearing 20 of the plug 18, and therefore opposite the axially outer face 23. The closure device 12 comprises a radially outer face 34. The elastic washer 19 'also comprises the bevel 17'. More specifically, the chamfer 17 'is formed between the axially inner face 25 and the radially outer face 34.

The closure system also comprises a fastening system 13 of the plugging device 12. The fastening system 13 comprises on the one hand a depth holding member 27 and, on the other hand, a means for indexing in rotation 28 of the foot end 15 of the device plugging with respect to the axis Y. For the maintenance in depth, there is provided a device for pushing the stopper device 12 with the bevel 17 'of the spring washer 19' resting on conical seat 10 formed in the outer ring 2. To this end, a tapped hole 29 is provided in the axially outer portion of the plug 18, Z axis, and opening at the axially outer bearing surface 20 of the plug 18. Furthermore, there is provided a screw 30 having a threaded body 31 oriented along the axis Z. The threading of the threaded body 31 is complementary to that of the threaded hole 29. The screw 30 also comprises a screw head 32 having an indentation. No. 33 for receiving a screwing tool adapted to impart to the screw a rotational movement about the Z axis. The screw head 32 also comprises a radially outward widened conical frustum shape having a surface biasing device 32 'having a shape complementary to the inclined portion 24 of the spring washer 19'.

Thus, as shown in FIG. 5, when the screw 30 is in the plug 18, the frustoconical shape of the screw head 32 cooperates with the inclined portion 24 of the elastic washer 19 'to deform the spring washer 19' radially outwardly with respect to the axis Z, so as to cooperate the radially outer face 34 of the spring washer with the opposite face 35 of the through hole of the outer ring 2.

Moreover, during screwing, the screw 30 pushes the spring washer 19 'along the transverse axis until the chamfer 17' presses on the conical seat 10 'of the outer ring 2.

Thus, in the position shown in FIG. 5, the plug 18 can not move axially along the Y axis towards the center of the ring by pressing on the conical seat 10 'of the outer ring 2. In fact, the plug 18 is screwed by the screw 30 which can not move axially towards the center of the ring because of its support on the elastic washer 19 '. The elastic washer 19 'is itself in abutment on the conical seat 10' held by the tightening of the screw 30 against the axially inner face 25. The stopper 18 can not move axially along the Y axis outwardly by pressing on the elastic washer 19 '. The spring washer 19 'is itself held by friction on the opposite face 35 of the outer ring 2, imposed by the tightening of the screw 30. The stopper device 12 is disposed at a determined depth along the Y axis.

The through hole 8 having an outer circumferential surface of revolution 41 along the Z axis, there is provided a means for indexing in rotation the foot end 15 of the plugging device 12 with respect to the outer ring 2 around the Y axis. As such, the plug 18 has a radial through hole 36 extending in the axially outer portion of the plug 18. In addition, the outer ring 2 has a hole 37 which extends parallel to the axis of the X bearing, extending from an end face 38 of the outer ring 2, and opening into the through hole 8.

When the plugging device 12 is disposed in the predetermined orientation with respect to the Z axis, its radial through hole 36 extends parallel to the hole 37 which extends parallel to the axis of the bearing X of the outer ring 2. When, moreover, the plugging device 12 extends to the predetermined depth, and the hole 37 which extends parallel to the axis of the bearing X of the outer ring 2 is aligned with the radial through hole 36, a pin 39 may be arranged extending both in the hole 37 which extends along the axis of the bearing X of the outer ring 2 and in the radial through hole 36 of the plugging device 12, in order to define the orientation of the device plugging 12, in particular its foot end 15, with respect to the Y axis.

In a predetermined position of the plugging device 12, comprising both a predetermined depth defined by the conical seat 10 ', and a predetermined orientation defined by the pin 39, a running surface of the foot end of the plugging device 12 is arranged continuous with the running surface 7a of the outer ring 2, and form with it a raceway for rolling bodies 5 of the bearing.

If the blocking device 12 is not in the predetermined position, for example by not being at the predetermined depth, the result is a step to be taken for the rolling body. If the plugging device 12 is not in the predetermined orientation, the running surface of the foot end of the plugging device 12 is not perfectly aligned with that of the outer ring 2. As a result, in one case as in the other, a fault that could lead to a bearing failure.

The fastening system can take an active state, which is that shown in Figure 5, in which the through hole 8 is plugged by the plugging device 12. Alternatively, the fastening system can take an inactive state, by removing the pin 39 and by unscrewing the screw 30, wherein the plugging device 12 can be removed from the through hole 8, and in which rolling bodies 5 can pass through the through hole 8 of the outer ring 2.

The plug 18 may include a groove 43 serving as a seat for a seal (not shown). The groove 43 is for example made annular around the Z axis, and is disposed towards the center of the bearing.

The product which has just been described can be manufactured as a result of the following operations: An annular main body 2 'is provided around a bearing axis, comprising an inner peripheral surface 7 and an outer peripheral surface 9 opposite to the inner peripheral surface 7, the inner peripheral surface comprising a rolling surface blank for rolling bodies of the bearing, the annular main body 2 'comprising a through hole 8 of Y-axis revolution extending between the inner peripheral surfaces 7 and 9, and having an outer peripheral surface of revolution 41 about the Y axis, is provided a closure system comprising a closure device 12 comprising a foot end 15, a head end 14 and a side surface of revolution 16 around a closure axis Z extending between the head ends 14 and foot 15, the closure system comprising in addition, a fastening system 13 of the plugging device 12 on the main body 2 ',

The plugging device 12 is mounted in the through-hole of revolution 8,

With the fastening system 13, the plugging device 12 is fixed in a predetermined position, comprising both a predetermined orientation of the device plugging around the Y axis and a predetermined depth of the plugging device 12 along the Y axis, in the through hole 8 of revolution, the foot end 15 at the running surface of the main body 2 ', the head end 14 at the surface opposite to the running surface, the fixing comprising the indexing in rotation of the foot end 15 of the plugging device 12 with respect to the main body 2 'about the Y axis, and maintaining the depth by biasing the head end 14 of the plugging device 12 radially with respect to the axis transverse Y, in close contact with the outer circumferential surface of revolution 41 of the through-hole 8 at the level of the deformable head end 14, the surface blank is rectified. the bearing and the foot end 15 of the plugging device 12 without axial displacement of the plugging device 12 relative to the annular main body 2 'or deformation of the rod 39, to generate a running surface 42 of the foot end 15 of the 12 and a running surface 7a of the main body 2 'continuous with each other and together forming a raceway for the rolling bodies 5 of the bearing, the rolling surface blank 42 and the foot end 15 of the plugging device 12 to initiate the martensitic transformation of the steel (for example by heat-treating the entire system), the bearing surfaces 42 and 7a are ground, the fastening system 13 is placed in its inactive state, and disassembling the stopper device 12 of the annular main body 2 ', the annular main body 2' is assembled to another ring, here an inner ring 3, with int erection of a rolling space 4, rolling bodies 5 are introduced into the rolling space 4 through the through-hole of revolution 8, the stopper 12 is mounted again in the through-hole 8 of revolution, and with said fixing system 13, the stopper device 12 is fixed in the predetermined position.

A second embodiment of the invention will now be described, in particular with reference to FIGS. 6 and 7. This second embodiment is similar to the first embodiment, and the elements common to these two embodiments will not be described in FIG. new. Mainly, a difference between these two embodiments lies in the fact that the height of the plug 18 along the Z axis is lower in this second embodiment. Thus, the plug 18 can not alone be the seat of the pin 39. In other words, the hole 37 which extends parallel to the axis of the bearing X can not be formed only in the plug 18 Thus, in this second embodiment, the hole 37 which extends parallel to the axis of the bearing X is transversely opening, and opens into the slot 22 of the spring washer 19 '. Thus, the slot 22 of the spring washer 19 'and the through hole 37 of the plug 18 are respectively aligned with each other with respect to the Z axis.

Figure 8 now shows a third embodiment of the invention. Figure 8 is similar to the previously described embodiment, and the common elements will not be described again. In Figure 8, the seal 44 formed in the groove 43 is shown. This embodiment differs substantially from the first embodiment in that the plugging device 12 is made in one piece. Thus, unlike the first embodiment which uses an elastic washer 19 'mechanically associated with the plug 18 by friction, the radial deformation is generated directly in the plug 18, in this embodiment.

Thus, in this embodiment, the head end 14 of the plug comprises two wings 45a, 45b spaced apart from each other with respect to the Z axis, spaced apart from each other by a gap space. 46, and resiliently deformable in a radial direction relative to the Z axis for bearing on the outer circumferential surface of revolution 41 of the outer ring 2. Each of the wings 45a and 45b has an inclined surface portion 46a, 46b , respectively, cooperating with the screw head 32, so that a movement of the screw 30 along the Z axis causes elastic deformation of the wings 45a and 45b radially outwardly with respect to the Z axis.

Claims (14)

A closure system for a bearing ring comprising an annular main body (2 ') about a bearing axis (X), and having an inner surface (7) and an outer surface (9) opposite to the inner surface One of the inner (7) and outer (9) surfaces being a rolling peripheral surface (7a) for rolling bodies (5) of the bearing, the annular main body (2 ') comprising a through hole ( 8) of axis revolution (Y) extending between the inner (7) and outer (9) surfaces, and having a peripheral surface (41) about the axis (Y), the closure system comprising: a stopper device (12) mountable to extend into the through hole (8) of revolution, and comprising a foot end (15) displaceable at the running surface of the main body (2 '), a head end ( 14) opposite the foot end (15), when the plugging device (12) is mounted in the transverse hole t (8) of revolution, and a lateral surface (16) of revolution about a closure axis (Z) extending between the head (14) and foot (15) ends, a running surface (42) ) of the foot end (15) of the plugging device (12) comprising both a predetermined orientation of the plugging device (12) about the axis (Y) and a predetermined depth of the plugging device (12) according to the axis (Y) and being, when the plugging device (12) extends in a predetermined position, disposed continuously with the running surface (7a) of the main body (2 ') and forming with it a raceway for the bodies rolling bearings (5), the head end (14) comprising an elastically deformable portion (19) whose lateral surface is radially deformable, a fastening system (13) of the plugging device (12) on the main body (2). '), adapted, in an active state, to fix the plugging device (12) to the main body (2 ') in a defined relative position in which the plugging device (12) is in the predetermined position, the fixing system (13) being able to be placed in an inactive state in which the plugging device (12) can disassembly of the main body (2 '), thereby opening the through hole (8) of revolution to allow to pass rolling bodies (5) of the bearing through the through hole (8) of revolution. the fastening system (13) having means for indexing in rotation (28) the foot end (15) of the plugging device (12) relative to the main body (2 ') about the axis (Y) , the fastening system (13) also comprises a depth holding member (27) biasing the end end (14) of the plugging device (12) radially relative to the transverse axis (Y), to place it close contact with the peripheral surface (41) of the through hole (8) at the head end (14), characterized in that the elastically deformable portion (19) of the head end (14) of the plugging device (12) comprises a first abutment (17) associated with a second abutment (10) of the through hole (8) of revolution defining a maximum depth of the elastically deformable portion (19) of the head end (14) of the plugging device (12), and wherein the fastening system (13) is adapted for fixed r the closing device (12) to the main body (2 ') in a defined relative position in which the first abutment (17) and the second abutment (10) bear against one another. The closure system of claim 1, wherein the rotational indexing means (28) comprises a hole (36) in the head end (14) of the closure device (12) and extending in a axis of indexing normal to the axis (Y), adapted to be aligned with a through hole (37) formed in the main body (2 ') in the predetermined position of the plugging device (12), and a rod (39) extending into and cooperating with the hole (36) in and extending out of the head end (14) to cooperate with the hole (37) of the main body (2 '). 3. Closing system according to claim 1 or 2, wherein the fastening system (13) comprises a threaded hole (29) formed in the closure device (12) along the axis (Y), and a screw (30). forming the depth holding member (27), and having a threaded body (31) screwed into the threaded hole (29) and a head (32) wider than the body (31), the screw (30) being screwable in the plugging device (12) along the axis (Y) until the head (32) biases the elastically deformable portion (19) of the head end (14) of the plugging device (12) radially relative to to the axis (Y). 4. Closing system according to claim 3, wherein the head (32) has a biasing surface (32 ') inclined relative to the axis (Y), and cooperating with the elastically deformable portion (19) of the end end (14) of the plugging device (12) so that a movement of the head (32) along the axis (Y) biases the elastically deformable portion (19) of the head end (14) of the device plugging (12) radially with respect to the axis (Y). 5. A closure system according to one of claims 1 to 4, wherein the plugging device (12) consists of a plug (18), the head end of the plug forming the head end (14) of the plugging device (12), and the head end of the cap comprising two wings (45a, 45b) disposed on either side of a receiving space (46), the depth-retaining member (27) being placed in the receiving space (46) by biasing the two wings (46a, 46b) radially with respect to the axis (Y). 6. Clogging system according to one of claims 1 to 4, wherein the closure system comprises a plug (18) and a spring washer (19 ') slotted disposed around the axis (Y), forming the deformable portion resiliently (19), disposed on the opposite side to the running surface (7a), bearing on an axial bearing surface (20) of the plug (18). The closure system of claim 6, wherein the depth holding member (27) also securely holds the plug (18) and the spring washer (19 ') slotted together. The closure system of claim 6 or 7, and claim 3 or 4, wherein the tapped hole (29) is formed in the head end of the plug (18), and the head of the screw (32). ) urges the spring washer (19 ') slotted radially relative to the axis (Y). 9. A closure system according to any one of claims 6 to 8, and according to any one of claims 2 to 4, wherein the hole (36) formed in the head end of the plugging device (12) is provided partially in the plug (18) and communicates with a slot (22) of the spring washer (19 ') split. 10. Closing system according to any one of claims 1 to 9, wherein the head end (14) of the plugging device (12) is set back from the outer surface (9). A bearing ring comprising: an annular main body (2 ') about a bearing axis (X), comprising an inner surface (7) and an outer surface (9) opposite to the inner surface (7), one of the inner (7) and outer (9) surfaces being a rolling peripheral surface (7a) for rolling bodies (5) of the bearing, the annular main body (2 ') comprising a through-hole (8) of revolution axis (Y) extending between the inner (7) and outer (9) surfaces, and having a peripheral surface (41) about the axis (Y), a closure system (11) according to any one Claims 1 to 10, wherein: the closure device (12) is mounted to extend into the through hole (8) of revolution, the foot end (15) placed at the running surface (7a). of the main body (2 '), the head end (14) opposite the foot end (15), the running surface (42) of the end of foot (15) of the closing device (12) being arranged continuous with the running surface (7a) of the main body (2 ') and forming with it a rolling path for the rolling bodies (5) of the bearing, the fastening system (13) of the plugging device (12) on the main body (2 '), fixing in its active state the plugging device (12) to the main body (2') in a defined relative position in which the plugging device (12) is in the predetermined position, the depth holding member (27) biasing the elastically deformable portion (19) of the head end (14) of the plugging device (12) radially with respect to the axis (Y) to place it in close contact with the peripheral surface (41) of the through hole (8) at the deformable portion (19). The bushing of claim 11, wherein the annular main body (2 ') further comprises an indexing hole (37) aligned with the indexing axis of the plugging device (12), the shank (39) extending into and cooperating with the hole (36) in the head end (14) of the plugging device (12) and the indexing hole (37) of the annular main body (2 '). 13. Bearing comprising at least one inner ring (3), one outer ring (2), and rolling bodies (5) disposed between the inner (3) and outer (2) rings, and adapted to roll on a running surface (6a, 7a) of each of the inner (3) and outer (2) rings, wherein one of the inner (3) and outer (2) rings is a ring according to one of claims 11 or 12. A method of manufacturing a bearing according to claim 13, comprising: providing an annular main body (2 ') about a bearing axis, comprising an inner surface (7) and an outer surface (9) opposite to the inner surface (7), one of the inner (7) and outer (9) surfaces comprising a rolling surface blank for rolling bodies (5) of the bearing, the annular main body (2 ') comprising a through hole (8) of axis revolution (Y) extending between the inner (7) and outer (9) surfaces, and having a peripheral surface (41) about the axis (Y), a closure system is provided (11) comprising a plugging device (12) comprising a foot end (15), a head end (14) and a lateral surface of revolution about a plug axis (Z) extending between the head ends (14) and foot (15), the closure system (11) further comprising a fastening system (13) of the plugging device (12) on the main body (2 '), the plugging device (12) is mounted in the through hole (8) of revolution, with the fastening system (13) the plugging device (12) is fixed. in a predetermined position, comprising both a predetermined orientation of the plugging device (12) around the axis (Y) and a predetermined depth of the plugging device (12) along the axis (Y), in the through hole (8). ) of revolution, the foot end (15) at the rolling surface blank of the main body (2), the head end (14) opposite the foot end (15), the fastening comprising indexing in rotation of the foot end (15) of the plugging device (12) relative to the main body (2 ') around the axis (Y), and maintaining the depth by biasing the deformable portion ( 19) of the head end (14) of the plugging device (12) radially with respect to the axis (Y), in contact with the circumferential surface (41) of the through-hole (8) at the deformable portion (19) of the head end (14), the running surface blank and the foot end are corrected ( 15) of the plugging device (12) without displacement of the plugging device (12) along the axis (Y) relative to the annular main body (2 '), to generate a running surface of the foot end (15) of the device (12) and a running surface of the main body continuous with each other and together forming a raceway for the rolling bodies (5) of the bearing, the rolling surface and the foot (15) of the plugging device (12), the running surface and the foot end (15) of the plugging device (12) are ground, the fastening system (11) is placed in its inactive state, and it is disassembled. the plugging device (12) of the annular main body (2 ') is assembled the annular main body (2 ') to another ring (3) with the interposition of a rolling space (4), rolling bodies (5) are introduced into the running space (4) through the through-hole ( 8) of revolution, the stopper device (12) is mounted again in the through hole (8) of revolution, and with said fixing system (11), the stopper device (12) is fixed in the predetermined position.