Cylindrical roller bearing stamped sheet retainer

Abstract

The utility model provides cylindrical roller bearing punch sheet -shaped retainer relates to bearing design technical field, including downside cover, retainer pillar, roller, upside cover, arc -shaped recess, adopt the retainer pillar of punch mode processing, the retainer pillar lower end is inserted on the riveting of downside cover, constitutes the retainer assembly of lower half, the retainer pillar clockwise side and anticlockwise side all are provided with roller pocket hole structure for inserting roller, the arc face outer wall of roller and the arc -shaped recess in the middle part of roller pocket hole structure are pasted, improve the positioning effect of roller rotation, guarantee its rotation stability, after the good roller is installed and is buckled upside cover on the retainer pillar upper end, under the action of external pressure machine, the pressure riveting fixed of retainer pillar upper end is carried out, need not the beam between pocket hole and pocket hole to mill cut processing, the pocket hole size formed is consistent, all roller center is strictly common circle, the roller stress is even when bearing rotates.

Description

Technical Field

[0001] This utility model relates to the field of bearing design technology, and in particular to stamped plate cages for cylindrical roller bearings. Background Technology

[0002] The descriptions in this section provide background information relating to this disclosure and do not constitute prior art.

[0003] Cylindrical roller bearings are mainly used in electric motors, machine tools, petroleum, rolling mill loading and unloading machinery, and various industrial machinery due to their high load-bearing capacity.

[0004] In traditional cylindrical roller bearings, the beams between the pockets of the brass cage are formed by milling. Due to limitations in the machining process, the secondary circles formed by the centers of each roller after assembly are not on the same secondary circle diameter, resulting in uneven force on the rollers when the bearing rotates. Utility Model Content

[0005] The purpose of this invention is to provide a stamped plate-shaped cage for cylindrical roller bearings, which has the advantages of eliminating the need for milling the beams between the pockets, ensuring consistent pocket dimensions, and ensuring that all roller centers are strictly concentric circles. This solves the technical problem of uneven force distribution on the rollers during bearing rotation caused by the milling process used in traditional brass cages for cylindrical roller bearings, where the beams between the pockets are formed by milling, resulting in non-uniform secondary circles formed by the centers of each roller after assembly due to limitations in the machining process.

[0006] This utility model provides a stamped plate-shaped cage for cylindrical roller bearings, comprising:

[0007] The lower cover has a retainer support inserted circumferentially on its upper surface.

[0008] The lower end of the cage support is riveted to the lower side cover;

[0009] The cage support has roller pockets on both the clockwise and counterclockwise sides;

[0010] Rollers are rotatably inserted into the adjacent roller pocket structures;

[0011] The upper cover is pressure-riveted to the upper end of the retainer support;

[0012] The roller pocket structure has an arc-shaped groove in the middle, and the arc surface of the roller rotates and fits against the inner wall of the adjacent arc-shaped groove.

[0013] As a further optimization, in order to secure the retainer support by compressing and thickening the rivet head and then riveting it to the outside of the lower or upper cover, the retainer support includes:

[0014] The main body of the support column has roller pocket structures on both the clockwise and counterclockwise sides;

[0015] The main body of the support column has rivets integrally formed at the middle of both the upper and lower ends.

[0016] The rivet head at the lower end of the main support body is riveted to the lower side cover;

[0017] The rivet head at the upper end of the main support body is pressure-riveted to the upper side cover.

[0018] As a further optimization, in order to make the gap between the roller and the pocket change from wide to narrow, increase the shear force on the lubricating oil flowing in the gap, thereby increasing the oil film renewal frequency and avoiding the drying of local oil film due to low renewal frequency, straight walls are provided at both ends of the arc-shaped groove.

[0019] The inner end of the straight wall is inclined at 15 degrees toward the center of the arc-shaped groove on the same side.

[0020] As a further optimization, in order to allow the axial crack groove to guide the metal radial flow after the rivet head is compressed, forming a snap-fit ​​plug, the upper rivet head is provided with an axial crack groove in the longitudinal direction.

[0021] As a further optimization, to improve the lubrication during roller rotation, the roller includes:

[0022] The roller body has micro-grooves evenly distributed on its outer wall;

[0023] The micro-grooves are filled with lubricating oil.

[0024] As a further optimization, to first utilize the lower side cover and cage struts to form an assembly of the lower half of the cage, rollers are inserted into pockets between adjacent cage struts. Then, an upper side cover is spliced ​​onto the upper ends of multiple cage struts. This eliminates the need for milling beams between the pockets, and all roller centers are strictly concircular. The lower and upper side covers have identical structures. The upper side cover includes:

[0025] The annular plate has rivet holes on its upper and lower surfaces corresponding to the rivet heads on the same side.

[0026] The lower rivet head is inserted into the corresponding rivet hole and riveted in place;

[0027] The rivet head on the upper side is inserted into the corresponding rivet hole and then pressure riveted.

[0028] As a further optimization, in order to avoid rotation after the rivet head is inserted into the rivet hole through the design of polygonal rivet head and rivet hole, the cross-sectional shape of the rivet head and rivet hole is the same, both being polygonal.

[0029] As a further optimization, in order to lubricate the lower surface of the rotating roller and the top surface of the lower cover, a first annular lubrication structure is fitted on the outer side of both the top surface of the lower cover and the bottom surface of the upper cover.

[0030] As a further optimization, in order to lubricate the upper surface of the rotating roller and the bottom surface of the upper cover, a second annular lubrication structure is fitted on the inner side of both the top surface of the lower cover and the bottom surface of the upper cover.

[0031] As a further optimization, in order to lubricate the upper surface of the rotating roller and the bottom surface of the upper cover, and the lower surface of the rotating roller and the top surface of the lower cover, and to facilitate the replenishment of lubricating oil, the first annular lubrication structure and the second annular lubrication structure have the same structure. The first annular lubrication structure includes:

[0032] An annular groove is formed on the outer side of the top surface of the lower cover and the bottom surface of the upper cover;

[0033] The annular groove is filled with lubricating oil;

[0034] The annular groove sidewall is fixedly connected to a lubricating oil injection groove.

[0035] This utility model provides an improved stamped plate-shaped cage for cylindrical roller bearings, which has the following improvements and advantages compared with the prior art:

[0036] The cage supports are manufactured using a stamping process. Each cage has a specific number of cage supports for each equal division. The lower end of each cage support is inserted into the lower cover and riveted in place, forming the lower half of the cage assembly. Roller pockets are provided on both the clockwise and counterclockwise sides of the cage supports for inserting rollers. The outer arc surface of the roller fits snugly against the arc-shaped groove in the center of the roller pocket, improving the positioning effect of the roller rotation and ensuring its rotational stability. After the rollers are installed, the upper cover is fastened to the upper end of the cage support. The upper end of the cage support is then pressure-riveted and fixed under the action of an external press. There is no need to mill the beams between the pockets, resulting in uniform pocket dimensions. All rollers are strictly concentric, ensuring even force distribution on the rollers during bearing rotation. Attached Figure Description

[0037] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the structure of this utility model;

[0039] Figure 2 This is a schematic diagram of the assembly structure of the lower side cover and the retainer support of this utility model;

[0040] Figure 3 This is a schematic diagram of the axial crack groove assembly structure of this utility model;

[0041] Figure 4 This is a schematic diagram of the roller structure of this utility model;

[0042] Figure 5 This is a schematic diagram of the structure of the upper cover, the first annular lubrication structure, and the second annular lubrication structure of this utility model;

[0043] Figure 6 This is a schematic diagram of the structure of the present invention assembled inside the bearing.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1-Lower side cover, 2-Cage support column, 21-Support column body, 22-Arc-shaped groove, 23-Straight wall, 24-Rivet head, 3-Upper side cover, 31-Annular plate, 32-Rivet hole, 4-Roller, 41-Roller body, 42-Micro groove, 5-Axial crack groove, 6-First annular lubrication structure, 61-Annular groove, 62-Lubricating oil injection groove, 7-Second annular lubrication structure. Detailed Implementation

[0046] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0047] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0048] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] Please see Figure 1-6 This utility model provides a technical solution: a stamped plate-shaped cage for cylindrical roller bearings, comprising:

[0050] The lower cover 1 has a retainer support 2 inserted circumferentially on its upper surface;

[0051] The lower end of the cage support 2 is riveted to the lower side cover 1;

[0052] The cage support 2 has roller pocket structures on both the clockwise and counterclockwise sides;

[0053] Roller 4 is rotatably inserted into the adjacent roller pocket structure;

[0054] The upper cover 3 is pressure-riveted to the upper end of the retainer support 2;

[0055] The roller pocket structure has an arc-shaped groove 22 in the middle, and the arc surface of the roller 4 rotates and fits against the inner wall of the adjacent arc-shaped groove 22.

[0056] Specifically in this embodiment, both the lower cover 1 and the upper cover 3 are made of stamped annular thin steel plates, and rivet holes 32 are provided on the rivet head 24 corresponding to the retainer support 2 above.

[0057] Furthermore, the cage support 2 is processed by stamping. Each cage is divided into a certain number of equal parts and a certain number of cage supports 2 are used. The lower end of the cage support 2 is inserted into the lower cover 1 and riveted to form the lower half of the cage assembly. After the rollers 4 are installed, the upper cover 3 is fastened to the upper end of the cage support 2. The upper end of the cage support 2 is pressure riveted and fixed under the action of an external press.

[0058] More specifically, roller pocket structures are provided on both the clockwise and counterclockwise sides of the cage support 2 for inserting rollers 4. The outer wall of the arc surface of roller 4 fits into the arc-shaped groove 22 in the middle of the roller pocket structure, which improves the positioning effect of the roller 4 rotation and ensures its rotational stability.

[0059] It is understandable that assembling parts by stamping is simpler than the process of milling pockets in brass cages, reducing production costs and making it easier to control pocket dimensions, ensuring that all inserted rollers are strictly concentric.

[0060] In some embodiments, the cage support 2 includes:

[0061] The main body 21 of the support column has roller pocket structures on both its clockwise and counterclockwise sides;

[0062] The main body of the support column 21 is integrally formed at the middle of both the upper and lower ends and has rivets 24.

[0063] The rivet head 24 at the lower end of the main support body 21 is riveted to the lower side cover 1;

[0064] The rivet head 24 at the upper end of the main support body 21 is pressure-riveted to the upper side cover 3;

[0065] The lower cover 1 and the upper cover 3 have the same structure. The upper cover 3 includes:

[0066] The annular plate 31 has rivet holes 32 on its upper and lower surfaces corresponding to the rivet heads 24 on the same side.

[0067] The lower rivet head 24 is inserted into the corresponding rivet hole 32 and riveted in place;

[0068] The upper rivet head 24 is inserted into the corresponding rivet hole 32 and then pressure riveted.

[0069] Specifically in this embodiment, the rivet head 24 passes through the rivet holes 32 on the lower side cover 1 and the upper side cover 3. The rivet head 24 is pressed by an external press and a mold to achieve the riveting effect by upsetting the rivet head 24.

[0070] Furthermore, during use, the lower end of the support body 21 and the lower side cover 1 are first riveted together and fixed. Then, the roller 4 is inserted into the adjacent roller pocket structure. Finally, the upper end of the support body 21 and the upper side cover 3 are pressure riveted together to form the entire cage.

[0071] In some embodiments, straight walls 23 are provided at both ends of the arc-shaped groove 22;

[0072] The inner end of the straight wall 23 is inclined at 15 degrees toward the middle of the arc-shaped groove 22 on the same side. This angle design makes the gap between the roller 4 and the pocket change from wide to narrow, which increases the shear force on the lubricating oil flowing in the gap, thereby increasing the oil film renewal frequency and avoiding the drying of the local oil film due to the low renewal frequency, which affects the smoothness of the roller 4 rotation.

[0073] In some embodiments, the upper rivet head 24 is provided with an axial crack groove 5 in the longitudinal direction, so that after the rivet head 24 is squeezed, the axial crack groove 5 guides the metal to flow radially, forming a snap-fit ​​plug, and achieving the riveting effect.

[0074] In some embodiments, roller 4 includes:

[0075] The roller body 41 has micro-grooves 42 evenly distributed on its outer wall;

[0076] The micro-grooves 42 are filled with lubricating oil.

[0077] Specifically in this embodiment, micro-grooves 42 are densely distributed on the curved outer wall of the roller body 41, and the lubricating oil filled in them is used to lubricate the rotation of the roller 4 and reduce friction.

[0078] In some embodiments, the rivet head 24 and the rivet hole 32 have the same cross-sectional shape, both being polygonal.

[0079] Specifically, in this embodiment, the design of the polygonal rivet head 24 and rivet hole 32 prevents the rivet head 24 from rotating after being inserted into the rivet hole 32.

[0080] Furthermore, the rivet head 24 is inserted into the rivet hole 32 with an interference fit to fix it before riveting, and finally the riveting is performed to reinforce it again.

[0081] In some embodiments, a first annular lubrication structure 6 is fitted on the outer side of the top surface of the lower cover 1 and the bottom surface of the upper cover 3.

[0082] The inner side of the top surface of the lower cover 1 and the bottom surface of the upper cover 3 are both equipped with a second annular lubrication structure 7;

[0083] The first annular lubrication structure 6 and the second annular lubrication structure 7 have the same structure. The first annular lubrication structure 6 includes:

[0084] An annular groove 61 is formed on the outer side of the top surface of the lower cover 1 and the bottom surface of the upper cover 3;

[0085] The annular groove 61 is filled with lubricating oil;

[0086] The sidewall of the annular groove 61 is fixedly connected to the lubricating oil injection groove 62.

[0087] Specifically in this embodiment, the annular groove 61 has a smaller width, which is less than half the width of the rivet hole 32. It is filled with lubricating oil to reduce the friction between the top and bottom surfaces of the rotating roller 4 and improve the smoothness of the roller 4's rotation.

[0088] Furthermore, the lubricating oil injection groove 62 is used to inject supplemental lubricating oil into the annular groove 61. In this embodiment, the lubricating oil used is a paste-like grease.

[0089] It is understandable that multiple lubricating oil injection grooves 62 can be provided on the same annular groove 61, which makes it easier to inject and replenish lubricating oil.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cylindrical roller bearing stamped sheet retainer, characterized by, include: The lower cover (1) has a retainer support (2) inserted circumferentially on its upper surface; The lower end of the retainer support (2) is riveted to the lower side cover (1); The cage support (2) has roller pocket structures on both the clockwise and counterclockwise sides; Rollers (4) are rotatably inserted into the adjacent roller pocket structures; The upper cover (3) is pressure-riveted to the upper end of the retainer support (2); The roller pocket structure has an arc-shaped groove (22) in the middle, and the arc surface of the roller (4) rotates and fits against the inner wall of the adjacent arc-shaped groove (22).

2. The cylindrical roller bearing stamped sheet retainer of claim 1, wherein, The cage support (2) includes: The main body of the support column (21) has roller pocket structures on both its clockwise and counterclockwise sides; The main body of the support column (21) has rivet heads (24) integrally formed at the middle of both the upper and lower ends; The rivet head (24) at the lower end of the main support body (21) is riveted to the lower side cover (1); The rivet head (24) at the upper end of the main support body (21) is pressure riveted to the upper side cover (3).

3. The cylindrical roller bearing stamped sheet retainer of claim 1, wherein, Both ends of the arc-shaped groove (22) are provided with straight walls (23); The inner end of the straight wall (23) is inclined at 15 degrees toward the middle of the arc-shaped groove (22) on the same side.

4. The cylindrical roller bearing stamped plate cage according to claim 2, characterized in that, The rivet head (24) on the upper side has an axial crack groove (5) in the longitudinal direction.

5. The cylindrical roller bearing stamped sheet retainer of claim 1, wherein, The roller (4) includes: The roller body (41) has micro-grooves (42) evenly distributed on its outer wall; The micro-grooves (42) are filled with lubricating oil.

6. The cylindrical roller bearing stamped sheet retainer of claim 2, wherein, The lower side cover (1) and the upper side cover (3) have the same structure, and the upper side cover (3) includes: The annular plate (31) has rivet holes (32) on its upper and lower surfaces corresponding to the rivet head (24) on the same side; The lower rivet head (24) is inserted into the corresponding rivet hole (32) and riveted in place; After the upper rivet head (24) is inserted into the corresponding rivet hole (32), it is pressure riveted.

7. The cylindrical-roller bearing stamped-plate retainer of claim 6, wherein, The rivet head (24) and the rivet hole (32) have the same cross-sectional shape, both being polygonal.

8. The cylindrical roller bearing stamped sheet retainer of claim 1, wherein, The outer sides of the top surface of the lower cover (1) and the bottom surface of the upper cover (3) are both equipped with a first annular lubrication structure (6).

9. The cylindrical roller bearing stamped sheet retainer of claim 1, wherein, The inner sides of the top surface of the lower cover (1) and the bottom surface of the upper cover (3) are both equipped with a second annular lubrication structure (7).

10. The cylindrical-roller bearing stamped-plate retainer of any of claims 8-9, wherein, The first annular lubrication structure (6) and the second annular lubrication structure (7) have the same structure. The first annular lubrication structure (6) includes: An annular groove (61) is formed on the outer side of the top surface of the lower cover (1) and the bottom surface of the upper cover (3); The annular groove (61) is filled with lubricating oil; The annular groove (61) has a fixed connection to a lubricating oil injection groove (62) on its sidewall.

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