JP2013024303A - Cylindrical roller bearing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cylindrical roller bearing capable of being very easily assembled without damaging a cylindrical roller or a retainer.SOLUTION: The cylindrical rollers 21 are assembled between each of a pair of flanged outer rings 1 whose end faces are butted against each other, and a common inner ring 11. The cylindrical rollers 21 are retained by a comb-shaped retainer 31 having a plurality of pillars 33 at one side of a ring-shaped part 32. In the retainer 31, the ring-shaped part 32 is so assembled that the ring-shaped part 32 is disposed at a butted face side of the outer ring 1, and assemble by inserting, which facilitates assembling the cylindrical roller bearing.

Description

  The present invention relates to a cylindrical roller bearing in which cylindrical rollers are incorporated between an outer ring and an inner ring, the cylindrical rollers are double-row or multi-row, and the cylindrical rollers in each row are held by a comb cage.

  In cylindrical roller bearings in which double-row cylindrical rollers are assembled between the outer ring and inner ring with a collar, and the double-row cylindrical rollers are held by a comb-shaped cage, And the other row of cylindrical rollers are assembled one after the other. In the case of cylindrical rollers that are assembled later, it is necessary to greatly deform the retainer column in the radial direction, which is very laborious to assemble. In some cases, the column portion is plastically deformed, and the cage cannot be stably guided.

  In order to solve such a problem, in the cylindrical roller bearing described in Patent Document 1, a groove is formed in the guide collar of the outer ring with a collar, and a tapered part is formed at the tip of the column part in the cage. In addition, cylindrical rollers are incorporated in pockets formed between the column portions facing each other from the insertion groove.

  Moreover, in the cylindrical roller bearing described in Patent Document 2, a locking claw is provided on both side edges of the column portion formed on the cage on the inner diameter side of the cage, and formed between the opposing locking claw and the column portion. The cylindrical rollers are pushed into the pockets.

JP-A-8-184319 JP-A-9-236129

  By the way, in the cylindrical roller bearing described in Patent Document 1, it is necessary to process a groove in the guide collar for assembling the cylindrical roller, and in order to facilitate the assembling of the cylindrical roller, the tip of the column portion Since it is necessary to process the tapered surface, the processing takes time and the processed surface is a contact portion with the cylindrical roller, so that the cylindrical roller may be damaged by the edge contact.

  On the other hand, in the cylindrical roller bearing described in Patent Document 2, it is necessary to forcibly push the cylindrical roller between the opposing locking claws, so that the cage base material color is transferred to the rolling surface of the cylindrical roller, The moving surface may be scratched and the rolling surface may be damaged.

  An object of the present invention is to provide a cylindrical roller bearing that can be assembled very easily without damaging the cylindrical rollers and the cage.

  In order to solve the above-described problems, in the present invention, one of the outer race ring and the inner race ring incorporated inside the outer race ring is a pair of flanged race rings arranged in parallel by abutting end surfaces. The other bearing ring is a common bearing ring, and a plurality of cylindrical rollers and a cage for holding the cylindrical rollers are incorporated between each of the pair of flanged bearing rings and the facing portion of the common bearing ring. The ring-shaped portion is formed in a comb shape in which a plurality of column portions are provided at equal intervals in the circumferential direction on one side surface in the axial direction of the ring-shaped portion. This is a built-in configuration in which is placed.

  When assembling the cylindrical roller bearing having the above-described configuration, a plurality of cylindrical rollers and a comb-shaped cage are assembled to each of the pair of flanged race rings arranged in parallel by abutting end surfaces. At this time, the cylindrical roller is assembled first, and after the cylindrical roller is assembled, a comb-shaped cage is inserted from one end in the axial direction on the abutting surface side of the flanged raceway toward the cylindrical roller. At this time, the cage is inserted with the column portion first, and each of the plurality of column portions is inserted between the cylindrical rollers opposed in the circumferential direction.

  When it is necessary to assemble the cylindrical rollers in a double row with respect to the raceway with the collar, the above operation for assembling the cage is repeated after the cylindrical rollers are assembled. At this time, the cage is assembled from the same direction.

  After assembling the cylindrical roller and the comb cage to the collared ring, the pair of collared rings was axially aligned in parallel with the ring-shaped part of the comb cage facing each other. The assembly of the cylindrical roller bearing is completed by assembling the common bearing ring from one end in the axial direction with respect to the pair of flanged bearing rings.

  As described above, the assembly of the comb-shaped cage is an assembly by insertion toward the previously assembled cylindrical roller, and it is not necessary to deform the column portion in the radial direction. The cage and the cylindrical roller can be assembled very easily without damaging them, and it is possible to eliminate the need to process the groove and the tapered surface and to process the locking claw.

  The cylindrical roller bearing according to the present invention may be configured such that each of the pair of flanged race rings and the cylindrical roller train incorporated between the common race rings is a single row and a double row cylindrical roller train as a whole. Well, or at least one of the pair of flanged ring rings, the cylindrical roller array incorporated between the flanged ring and the common track ring is a double row, and as a whole, three or four rows of multi-row cylindrical roller rows and It may be what you did.

  Here, if the width dimensions in the axial direction of the other guide collars other than the guide collars at both ends in the axial direction of the pair of collar rings are the same, the width dimensions of the ring-shaped portions in the plurality of comb-shaped cages are also the same. Therefore, there is only one type of cage, and the cost can be reduced by sharing the comb cage.

  In addition, since the number of cages can be reduced by using the ring-shaped portions of the pair of cages arranged on both sides with the butting surfaces of the pair of raceways as the boundary, the cost of this case is also reduced. In addition to the reduction, it is possible to prevent friction and wear of the butt surfaces due to roller delay and advance.

  Furthermore, by connecting the pair of collar rings with collars by connecting means, the pair of collar rings with collars can be made non-separated, so that a cylindrical roller bearing that can be easily assembled to various devices is obtained. Can do.

  As the connecting means, a connecting ring is fitted so as to straddle the end of the pair of flanged bearing rings, both ends of the connecting ring are caulked in the radial direction, and the caulking pieces are fitted with collars. It is possible to adopt a method in which the ring is engaged with a circumferential engagement groove formed on the ring fitting surface, or a method in which the connecting ring is press-fitted so as to straddle the abutting side ends of the pair of collared rings. it can.

  Here, in the case of a cage in which a roller is incorporated by deforming the cage, the amount of deformation of the cage at the time of incorporation is not easy when the cage is a raceway guide using a raceway without a cage.

  If the cage can be assembled without being deformed like the cage in the present invention, the guide of the cage can be easily changed to a raceway guide by a common raceway without a hook. Then, by using the guide of the cage as a raceway guide by a common raceway without a cage, the cage can obtain a driving force directly from the rotary raceway when the cage raceway is a bearing that rotates.

  In the cylindrical roller bearing according to the present invention, as described above, assembling can be performed by inserting the column portion of the comb cage between the cylindrical rollers previously assembled. And can be assembled very easily without damaging the cage.

Sectional drawing which shows 1st Embodiment of the cylindrical roller bearing which concerns on this invention Sectional view along the line II-II in FIG. Sectional view along line III-III in FIG. (A) thru | or (e) is sectional drawing which shows the assembly of a cylindrical roller bearing in steps Sectional drawing which shows 2nd Embodiment of the cylindrical roller bearing which concerns on this invention Sectional drawing which shows 3rd Embodiment of the cylindrical roller bearing which concerns on this invention Sectional drawing which shows 4th Embodiment of the cylindrical roller bearing which concerns on this invention Sectional drawing which shows 5th Embodiment of the cylindrical roller bearing which concerns on this invention Sectional drawing which shows 6th Embodiment of the cylindrical roller bearing which concerns on this invention

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show a first embodiment of a cylindrical roller bearing according to the present invention. As shown in FIGS. 1 to 3, the cylindrical roller bearing includes a pair of outer rings 1 as outer races, a common inner ring 11 as inner races, a cylindrical roller 21 incorporated between both wheels, and It consists of a cage 31 that holds the cylindrical rollers 21.

  Each of the pair of outer rings 1 has guide collars 2 at both ends of the inner diameter surface and the central part in the axial direction, and cylindrical rollers 21 are provided along the raceway grooves 3 formed between the guide collars 2. It is supposed to roll freely.

  The pair of outer rings 1 are arranged in parallel in the axial direction with their end faces but are connected by a connection ring 41 and are not separated in the axial direction. In the embodiment, the connecting ring 41 is fitted so as to straddle the abutting side ends of the pair of outer rings 1, and both ends of the connecting ring 41 are caulked inward in the radial direction. Are engaged with circumferential engaging grooves 4 formed on the outer diameter surfaces of the pair of outer rings 1, but the connection ring 41 may be press-fitted into the outer diameter surface of the outer ring 1.

  The cylindrical rollers 21 are incorporated in a double row with respect to each of the pair of outer rings 1, and four rows of cylindrical roller rows are provided as a whole, and the cylindrical rollers 21 in each row are held by a cage 31.

  The cage 31 has a comb shape in which a plurality of column portions 33 are provided at equal intervals in the circumferential direction on one side surface in the axial direction of the ring-shaped portion 32, and both circumferential sides of each column portion 33 are cylindrical along the outer periphery of the cylindrical roller 21. The surface 34 is used. A space between the cylindrical surfaces 34 opposed in the circumferential direction is a pocket 35, and the cylindrical roller 21 is incorporated in the pocket 35.

  The comb-shaped cage 31 is built in such a manner that the ring-shaped portion 32 is disposed on the abutting surface side of the pair of outer rings 1, and is prevented from being pulled out by the cylindrical rollers 21 that are held. The width dimension of the ring-shaped portion 32 is set to be approximately equal to the axial width of the guide collar 2 located on the outer side. Further, although the comb-shaped cage 31 is an outer ring guide, it may be an inner ring guide.

  The cylindrical roller bearing shown in the first embodiment has the above structure, and the cylindrical roller bearing is assembled according to the order shown in FIGS. 4 (a) to 4 (e). First, as shown in (a), a plurality of cylindrical rollers 21 are assembled in one of a pair of flanged outer rings 1 arranged in parallel, for example, in a raceway groove 3 on the left side of the outer ring 1 located on the left side. After the roller 21 is assembled, a comb-shaped cage 31 is inserted into the inside from the right side of the outer ring 1 located on the left side. At this time, the cage 31 is inserted with the column portion 33 first, and each of the plurality of column portions 33 is inserted between the cylindrical rollers 21 opposed in the circumferential direction.

  After assembling the cylindrical roller 21 and the cage 31 into the first-row raceway groove 3, as shown in (b), the cylindrical roller 21 is incorporated into the remaining raceway groove 3, and after the incorporation, as in the above, the outer ring 1 A comb-shaped cage 31 is inserted into the inside from the right side of each, and each of the preceding column portions 33 is inserted between the cylindrical rollers 21 opposed in the circumferential direction.

  After assembling the double-row cylindrical roller 21 to the left outer ring 1, a plurality of cylindrical rollers 21 are assembled into the right raceway groove 3 of the right outer ring 1 and the cylindrical rollers 21 are assembled, as shown in FIG. The comb-shaped cage 31 is inserted into the inside from the left side of the right outer ring 1. At this time, the cage 31 is inserted with the column portion 33 first, and each of the plurality of column portions 33 is inserted between the cylindrical rollers 21 opposed in the circumferential direction.

  After assembling the cylindrical roller 21 and the retainer 31 into the right raceway groove 3, as shown in (d), the cylindrical roller 21 is incorporated into the remaining raceway groove 3, and after the incorporation, the left side of the outer ring 1 is the same as described above. Then, a comb-shaped cage 31 is inserted into the inner side, and each of the preceding column portions 33 is inserted between the cylindrical rollers 21 opposed in the circumferential direction.

  As described above, when the double-row cylindrical rollers 21 are assembled inside the double-row outer rings 1, the end faces of the pair of outer rings 1 are brought into contact with each other as shown in FIG. Assembly is completed by assembling the inner ring 11 after connection.

  As described above, the cylindrical roller bearing is assembled by holding the cylindrical roller 21 by assembling the comb-shaped cage 31 after the cylindrical roller 21 is assembled to the raceway groove 3 of the outer ring 1. Since the assembly of the shape cage is an assembly by insertion and it is not necessary to deform the column portion 33 in the radial direction, the cylindrical roller bearing can be assembled very easily without damaging the cage 31 and the cylindrical roller 21. it can. In the assembled state, the cylindrical roller 21 is retained by the guide collar 2 and the retainer 31 is retained by the cylindrical roller 21, so that a stable assembled state can be obtained.

  In the cylindrical roller bearing shown in the first embodiment, the combination of the pair of flanged outer rings 1 in which the double-row raceway grooves 3 are formed on the inner diameter surface has been described as an example, but the combination of the outer rings 1 is limited to this. Is not to be done. For example, as shown in the second embodiment of FIG. 5, a combination of a flanged outer ring 1 having a double row raceway groove 3 on the inner diameter surface and a flanged outer ring 1 having a single row raceway groove 3 on the inner diameter surface. As shown in the third embodiment of FIG. 6, as a combination of a pair of flanged outer rings 1 having a single row of raceway grooves 3 on the inner surface, as shown in the third embodiment of FIG. Two cylindrical roller rows may be used.

  FIG. 7 shows a fourth embodiment of the cylindrical roller bearing according to the present invention. In this embodiment, the axial width dimension W of the remaining guide collars 2 other than the guide collars 2 at both ends in the axial direction of the pair of outer rings 1 with collars arranged in parallel in the axial direction is the same. This is different from the cylindrical roller bearing shown in FIG. For this reason, the same parts as those in FIG.

  As shown in the fourth embodiment, the width width W in the axial direction of the remaining guide collars 2 other than the guide collars 2 at both ends in the axial direction of the double-row collared outer ring 1 is made the same. As shown in FIG. 7, it is necessary to manufacture several types of comb-shaped cages 31 in which the width of the ring-shaped portion 32 in the plurality of comb-shaped cages 31 can be the same, and the width of the ring-shaped portion 32 is different. The cost can be reduced by sharing the cage 31.

  FIG. 8 shows a fifth embodiment of a cylindrical roller bearing according to the present invention. In this embodiment, the first embodiment is shown in that the abutment surface of the double-row outer ring 1 is a boundary, and the ring-shaped portions 32 of the pair of left and right cages 31 adjacent to the boundary surface are common. Different from cylindrical roller bearings. For this reason, the same code | symbol is attached | subjected to the same components as the cylindrical roller bearing shown in 1st Embodiment, and description is abbreviate | omitted.

  Here, the common ring-shaped portion 32 of the pair of left and right retainers 31 close to the boundary surface means a retainer in which a plurality of column portions 33 are provided on both sides in the axial direction of the ring-shaped portion 32. .

  As shown in FIG. 8, by making the ring-shaped portion 32 of the pair of cages 31 common, the number of cages 31 can be reduced, so that the cost can be reduced and the rollers 21 It is possible to prevent friction and wear of the butt surface due to delay and advance.

  In the first to fifth embodiments, the outer ring 1 is paired and the inner ring 11 is common. However, as shown in the sixth embodiment of FIG. 9, the outer ring 1 is common and the inner ring 11 is paired. A plurality of guide collars 12 may be provided on the outer diameter surfaces of the pair of inner rings 11.

  In the case of the cylindrical roller bearing shown in the sixth embodiment, the end faces of the pair of flanged inner rings 11 are brought into contact with each other, and the retainer 31 for holding the cylindrical rollers 21 incorporated between the guide collars 12 of the inner ring 11 is the ring. Assume that the shape portion 32 is disposed on the butt face side of the inner ring 11. By such incorporation, the cage 31 can be incorporated into the outside of the inner ring 11, and a cylindrical roller bearing that can be easily assembled can be obtained.

  Here, in the inner ring butt cylindrical roller bearing shown in FIG. 9, when the parallelly arranged inner rings 11 are not separated in the axial direction, the connecting ring 43 is connected to the inner diameter surface of the inner ring 11 so as to straddle the butt end portion of the inner ring 11. Are engaged, and both ends of the connecting ring 43 are caulked outward in the radial direction, and the caulking pieces 44 are engaged with the engaging grooves 13 formed on the inner diameter surface of the inner ring 11.

  The connection ring 43 may be attached by press fitting. Although the cage 31 is an inner ring guide in FIG. 9, it may be an outer ring guide.

1 Outer ring (outer raceway)
2 Guide collar 4 Engaging groove 11 Inner ring (inner race)
12 Guide collar 13 Engaging groove 21 Cylindrical roller 31 Cage 32 Ring-shaped portion 33 Column portion 35 Pocket 41 Connecting ring 42 Clamping piece

Claims (9)

  One of the outer race ring and the inner race ring incorporated in the inner race ring is a pair of flanged race rings arranged in parallel by abutting the end faces, and the other race ring is a common race ring. A plurality of cylindrical rollers and a cage for holding the cylindrical rollers are incorporated between each of the flanged bearing rings and the facing portion of the common bearing ring, and a plurality of the cages are provided on one axial side surface of the ring-shaped portion. A cylindrical roller bearing having a comb-like shape in which the pillar portions are provided at equal intervals in the circumferential direction, and the comb-shaped cage is provided with a ring-shaped portion disposed on the abutting surface side of a pair of collared rings.   2. The cylindrical roller bearing according to claim 1, wherein each of the pair of flanged raceways and the cylindrical roller train incorporated between the common raceways is a single row, and a double row cylindrical roller train as a whole.   The cylindrical roller train incorporated between at least one of the pair of flanged race rings and a common race ring is a double row, and a multi-row cylindrical roller row of 3 or 4 rows as a whole. The cylindrical roller bearing according to 1.   4. The cylindrical roller bearing according to claim 3, wherein the axial width dimensions of the remaining guide collars other than the guide collars at both ends in the axial direction of the pair of collar rings are the same.   The cylindrical roller bearing according to claim 3, wherein the ring-shaped portions of the pair of cages arranged on both sides of the butted surfaces of the pair of flanged race rings are used as a boundary.   The cylindrical roller bearing according to any one of claims 1 to 5, wherein the pair of flanged race rings are connected to each other by a connecting means and are not separated in the axial direction.   The connecting means fits the connecting ring so as to straddle the abutting side ends of the pair of collared rings, the ends of the connecting ring are caulked in the radial direction, and the caulking pieces are fitted with collars. The cylindrical roller bearing according to claim 6, wherein the cylindrical roller bearing is configured to be engaged with a circumferential engagement groove formed on the ring fitting surface.   The cylindrical roller bearing according to claim 6, wherein the connecting means has a configuration in which a connecting ring is press-fitted so as to straddle abutting side end portions of a pair of collared rings.   The cylindrical roller bearing according to any one of claims 1 to 8, wherein each guide of the plurality of cages is a raceway guide by a common raceway.

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