DE7935977U1 - Rolling bearing with segment cage - Google Patents

Description

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ΘΚΡ KUGfSLLAOERFABRIKEN QMBH Sohweinfuirfc, December 19, 1979

DE 79 037 DE TPA / gl.hb Rolling bearing with counter cage

The present innovation relates to rolling bearings, in particular cylindrical roller bearings, consisting of at least one bearing ring provided with ribs and several rolling elements held in pockets of a multi-part cage consisting of segments, the ribs of the bearing ring being provided with axially protruding annular projections that engage behind the segments of the cage.

Such a bearing is known from DE-PS 1 009 444, for example. In this known rolling bearing are the inner end faces of the shelves shaped so that axially protruding annular projections arise over grip the tips of the inserted rolling elements so that the latter do not fall out when the guide is axially parallel can. At least one guide and holding body for shorter rolling elements is used in this bearing. This guide body or segment is designed like a frame, the side parts of the shape of the inner end faces of the rims are adapted so that the axially protruding protrusions or curbs

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Side parts of the segment · as well as overlap / like the End faces of the rolling elements.

With this known design, the guide body or the segment can only be inserted into the bearing ring with the insertion of all the rolling bodies with a flat cross web bent or bent on the outside and then the cross webs can be pressed flat by applying pressure to the hump sides exists that when flat pressing the segment is so deformed / that its perfect function is no longer guaranteed when the bearing is in operation the guidance accuracy is limited. There is also great wear and tear and thus a short service life.

The present innovation has set itself the task / to improve the bearing described at the beginning / that a simpler assembly without deformation of the segments and thus without the risk of permanent Deformation is possible, the segments can be designed to be dimensionally stable.

This object is achieved according to the present innovation in that in the case of the aforementioned Bearing the axially protruding annular projection on at least one of the rims for inserting the Segments is interrupted by a closable by means of a filler, radial recess.

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This training makes it possible / did

without having to deform them in the ζwisehen

Insert the space provided for bonding the bearing ring

The filler piece is preferably attached to the bearing ring provided with ribs «

According to a further feature of the innovation, the filler piece can be fastened in an axial groove in the board.

To achieve a perfect fixation of the piece, according to a further feature of the innovation, the axial groove and the filler piece with dovetail-shaped Provide side surfaces.

According to a further feature of the innovation, each segment of the cage is provided with axially protruding projections provided, the width of which is slightly in the circumferential direction is smaller than the width of the radial recess in the axially protruding annular projection.

The innovation will be explained in more detail using the exemplary embodiments shown in the drawings.

Show it:

1 shows a partial cross section of a radial cylindrical roller bearing,

FIG. 2 shows a section along the line A-A of the bearing according to FIG. 1,

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3 shows a partial section n <aeh line S-S of FIG. 2,

Fig. 4 shows a soap scene for one of the bearings segments used /

Fig. 5 is a close-up view of this segment Figure 4 and

6 shows a file section similar to FIG. 2 through a modified form of a radial cylindrical roller bearing.

The radial cylindrical roller bearing according to Figure 1 consists of the outer ring 1 / the inner ring 2 between them two bearing rings arranged cylindrical rollers 3 and the segments 4 holding these cylindrical rollers 3 Segments 4, which each receive a cylindrical roller 3, have the task of, on the one hand, the individual cylindrical rollers 3 to keep the same distance from each other and on the other hand, these cylindrical rollers 3 during assembly or Dismantling of the bearing, d. H. when the inner ring 2 is pulled off, hold it against falling out inwards. The outer ring 1 has on both sides radially inwardly directed rims 5 and 6, which on their inner, d. H. the cylindrical rollers 3 facing end faces with guide surfaces 7 and 8 for the cylindrical rollers 3 and with recesses 9 and 10 for receiving the segments 4 are provided. The recesses 9 and 10 are limited radially inward by axially protruding annular projections 11 and 12, the corresponding Reach under the surfaces of the segments 4 and thus keep the segments 4 from falling out inwards.

One of the axially protruding annular projections - here 12 - is provided at one point on the circumference with a radial recess 13, the width a ^{1 of which} in the circumferential direction is equal to or greater than the width a of the axially protruding projections 14 of the segments 4. The recess 13 is closed by a filler piece 15 which is inserted into the rim 6 in an axially extending groove 16. After insertion, this filler piece 15 complements the axially projecting annular projection 12 to form a closed ring, so that the segments 4 are kept from falling out inwards.

As can be seen from Figure 6, the side surfaces the axial groove 16 and the filler piece 15 be inclined, so that a dovetail connection arises. It is of course possible to have the side surfaces in the opposite direction as shown to tend.

The assembly of the described radial cylindrical roller bearing takes place as follows:

With the filler piece 15 removed, the individual segments 4 of the cage are inserted into the outer ring 1 and distributed around the circumference. After the last segment 4 has been inserted, the filler piece 15 is inserted into the axial groove 16 and connected to the outer ring in a suitable manner. This can be done by screwing or pinning; however, for those cases in which a later expansion of the segments is no longer necessary, it is also possible to permanently attach the filler piece 15 by gluing or welding. Then the cylinder rolls 3 were then inserted into the pockets 17.

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elements 4 used. These pockets 17 are side surfaces adapted to the shell shape of the cylindrical rollers 3 18 provided, which narrow inward and so the cylindrical rollers 3 from falling out keep inside. The inner edges of the side surface 18 are elastically resilient, so that the cylindrical rollers 3 can be deflected. After inserting the cylindrical rollers 3 into the segments 4 the inner ring 2 can be pushed axially into the outer ring with the rolling element set.

It is also possible, both axially protruding annular projections 11 and 12, each with a radial To provide recess 13, which can be closed by filler pieces 15. In this case it is possible to radially introduce the segments 4 already equipped with the cylindrical rollers 3 into the outer ring 1 and to distribute on the perimeter.

Of course, it is easily possible to arrange the radial recess (s) also in the inner ring provided with ribs and axial projections. In addition, instead of the cylindrical rollers, other rolling elements can also be arranged in the segments. Finally, the measures described above can also be used for axial bearings, e.g. B. axial cylindrical roller or axial needle roller bearings can be taken.

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Claims (5)

SKF KDGELLAGERFABRIKEN GMBH Schweinfurt, December 19, 1979 DE 79 037 DE TPA / gl.hb claims for protection 1. Rolling bearings, in particular cylindrical roller bearings, consisting of at least one provided with ribs Bearing ring and several in pockets of a multi-part, That is to say, rolling elements held by segments of a cage, the rims of the bearing ring being provided with axially protruding annular projections which engage behind the segments of the cage, characterized in that the axially protruding annular protrusion (11, 12) is located on at least one of the rims ( 5, 6) for inserting the segments (4) is interrupted by a radial recess (13) which can be closed by means of a filler piece (15). 2. Rolling bearing according to claim 1, characterized in that the filler piece (15) is provided with ribs (5, 6) Bearing ring (1) is attached. 3. Rolling bearing according to claim 2, characterized in that the filler piece (15) in an axial groove (16) of the Bordes (5 or 6) is attached. 4. Rolling bearing according to claim 3, characterized in that the axial groove (16) and the filler piece (15) provided with dovetail-shaped side surfaces are. 5. Rolling bearing according to one of claims 1 to 4, characterized in that each segment (4) of the cage is provided with axially protruding projections (14) whose width is slightly smaller than you; Width a ^{1 of} the radial recess (13) in the axially protruding annular projection (11, 12). • 3 -