Integrated stamping type salient point retainer

Abstract

The utility model discloses an integrated stamping type salient point retainer which comprises two integrally-formed end face rings and a plurality of separation columns connected with the two end face rings, the separation columns are evenly distributed between the two end face rings at equal intervals to form a stable retainer frame, and pockets for containing rollers are formed between the adjacent separation columns. A plurality of concave areas are formed on one side, deviating from a roller, of an end face ring through a stamping process, correspondingly, a plurality of convex parts integrally formed with an end ring surface are formed on one side, facing the roller, of the end face ring in the concave areas, and the integrally formed convex parts are in seamless connection with the end face ring, so that the structural strength of the convex parts is greatly enhanced through the overall structure; and the retainer is more stable and reliable when bearing high-speed rotation and heavy load of the roller. The convex parts are directly matched with the grooves in the end surfaces of the rollers, so that the positioning accuracy and stability of the rollers in the retainer are improved by the accurate matching mode, the shaking and jumping of the rollers in the running process are reduced, and the noise and vibration are further reduced.

Description

Technical Field

[0001] The present application belongs to the field of bearing retainers, and in particular relates to an integrated stamped convex retainer. Background Art

[0002] As a core component of modern machinery, roller bearings require optimized internal structure to enhance overall performance and extend service life. While the cage design of traditional cylindrical roller bearings ensures smooth assembly and rotation of the rollers through larger apertures, this design also introduces issues such as cage wear, noise, and shortened service life due to excessive clearance.

[0003] In order to overcome these defects, the Chinese patent application number 201920580305.2 provides an innovative cage design. The cage of this design is composed of a plurality of I-shaped cage units, and a card slot is added to the two end faces of the roller. The cage unit includes a pillar that isolates adjacent rollers and a curved connecting part located at both ends of the pillar. These connecting parts can be spliced into a ring structure during assembly to form a complete cage frame. The two ends of the connecting part are provided with a card joint that forms a card fit with the card slot. They form a tight card fit with the card slot on the end face of the roller, effectively reducing the shaking of the roller during rotation, avoiding direct collision with the window beam, and reducing the problems of cage wear and noise caused by excessive window hole clearance. However, since the cage unit and the card joint are combined by splicing, their structural strength and durability become potential challenges. Specifically, when the roller runs at high speed or high load, the contact friction between the slot and the joint will increase. If the strength or design of the joint is unreasonable, the joint will become loose or even disintegrate, thereby affecting the smooth operation of the roller and the overall structural safety of the cage. It can be seen that the existing technology needs to be further improved and enhanced. Utility Model Content

[0004] The utility model provides an integrated stamping type convex point retainer, which at least solves or alleviates one or more technical problems in the prior art, or at least provides a beneficial choice.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] An integrally stamped raised point retainer comprises two integrally formed end face rings and a plurality of partition columns connecting the two end face rings. The partition columns are evenly and equidistantly distributed between the two end face rings to form a stable retainer frame. Pockets for placing rollers are formed between adjacent partition columns. A plurality of concave areas are formed on the side of the end face ring facing away from the roller by a stamping process. Correspondingly, on the side of the end face ring facing the roller, the concave area forms a plurality of convex portions integrally formed with the end ring surface so as to cooperate and connect with the groove on the roller end face.

[0007] The integrated stamped convex point retainer of this application features an integrally formed convex portion seamlessly connected to the end face ring. This overall structure significantly enhances the structural strength of the convex portion, making the retainer more stable and reliable when subjected to high-speed roller rotation and heavy loads. The convex portion is designed to directly mate with the groove on the roller end face. This precise fit improves the positioning accuracy and stability of the roller within the retainer, reducing the roller's shaking and jumping during operation, thereby reducing noise and vibration. Furthermore, this solution uses a stamping process to form the convex portion and the concave area. This process has the advantages of high production efficiency and low cost. It can improve the hardness and wear resistance of the convex portion to a certain extent, further extending the service life of the retainer.

[0008] In a preferred implementation, the convex portion is located on the center line of the pocket, and the convex portions of the two end face rings are arranged opposite to each other.

[0009] The design of the convex part being located on the center line of the pocket, that is, at the center of the roller, helps to achieve better dynamic balance and improve the rotational stability and precision of the bearing. Due to the reduction of vibration, the noise generated by the bearing during operation will also be reduced accordingly.

[0010] In a preferred implementation, the convex portions of the two end face rings are respectively the first convex portion and the second convex portion. When the roller end face abuts against the end face ring and the second convex portion completely enters the groove, the first convex portion can smoothly enter the groove of the other end face of the roller.

[0011] In a preferred implementation, the lengths l1 and l2 of the first convex portion and the second convex portion along the direction perpendicular to the end face ring satisfy l1≤l2, and the depth d of the roller end face groove satisfies l2≤d.

[0012] In a preferred implementation, the convex portion is in a truncated cone shape, and the shape of the groove is adapted to the convex portion, and the two are clearance-fitted.

[0013] In a preferred implementation, the separation column is connected to the side surfaces of the two end face rings.

[0014] In a preferred implementation, a stress truncation groove is provided on a side of the end face ring facing away from the roller, and the truncation groove extends from the inner side to the outer side of the end face ring.

[0015] In a preferred implementation, a polytetrafluoroethylene coating is provided on the surface of the protrusion and inside the groove to reduce friction therebetween.

[0016] In a preferred implementation, the two end faces are arranged symmetrically. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present application and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the three-dimensional structure of an exemplary embodiment of the integrated stamped convex dot retainer of the present application is depicted;

[0019] Figure 2 A schematic diagram of the three-dimensional structure of an exemplary embodiment of the integrated stamped convex dot retainer and rollers of the present application is depicted;

[0020] Figure 3 A schematic structural diagram of a schematic implementation of a truncation groove is depicted;

[0021] Description of labels:

[0022] 1-end face ring; 10-concave area; 11-convex portion; 110-second convex portion; 111-first convex portion; 12-cross-sectional groove; 2-separator column; 3-roller; 30-groove. DETAILED DESCRIPTION

[0023] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0024] In the description of the present invention, it should be understood that the terms "center," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "axial," "radial," "circumferential," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the present invention, unless otherwise expressly specified or limited, a first feature being "up" or "down" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium.

[0025] In this utility model, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integration; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or an interaction between two components. However, the phrase "direct connection" indicates that the two connected entities are not connected through an intermediate structure, but are connected to form a whole through a connecting structure. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0026] In this utility model, terms such as "first," "second," etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0027] The present invention will be described below with reference to the accompanying drawings.

[0028] The specific plans adopted are:

[0029] like Figure 1-3 As shown, the utility model provides an integral stamped convex point retainer, comprising two integrally formed end face rings 1 and a plurality of partition columns 2 connecting the two end face rings, the partition columns are evenly and equidistantly distributed between the two end face rings to form a stable retainer frame, pockets for placing rollers are formed between adjacent partition columns, a plurality of concave areas are formed on the side of the end face ring away from the roller by a stamping process, and correspondingly, on the side of the end face ring facing the roller 3, the concave area 10 forms a plurality of convex portions 11 integrally formed with the end ring surface, so as to cooperate with the groove 30 on the roller end face.

[0030] In this structure, the integrally formed protrusion seamlessly connects to the end ring. This overall structure significantly enhances the structural strength of the protrusion, making the cage more stable and reliable when subjected to high-speed roller rotation and heavy loads. The protrusion is designed to directly mate with the groove on the roller end face. This precise fit improves the positioning accuracy and stability of the roller within the cage, reducing the roller's shaking and jumping during operation, thereby reducing noise and vibration. Furthermore, this solution uses a stamping process to form the protrusion and concave area. This process has the advantages of high production efficiency and low cost. It can also improve the hardness and wear resistance of the protrusion to a certain extent, further extending the service life of the cage.

[0031] As a preferred embodiment of the present application, the convex portion is located on the center line of the pocket, and the convex portions 11 of the two end face rings 1 are arranged relative to each other, forming a structure similar to a clamping structure, which has a better fixing effect on the roller, helps prevent the roller from shifting or falling off during high-speed rotation, and improves the overall stability of the bearing. The design of the convex portion being located on the center line of the pocket helps to ensure that the center of mass of the roller coincides or nearly coincides with the center of rotation during rotation, thereby reducing the vibration caused by the center of mass shift. It helps to achieve better dynamic balance and improve the rotational stability and precision of the bearing. Due to the reduced vibration, the noise generated by the bearing during operation will also be reduced accordingly. This is especially important for application scenarios that require a low-noise environment, such as precision instruments, electric vehicles, etc. When the roller is subjected to radial and axial loads, it can more effectively disperse the force to the cage, thereby improving the load-bearing capacity of the cage.

[0032] As a preferred embodiment of the present application, the protrusions of the two end face rings are respectively a first protrusion 111 and a second protrusion 110. When the roller end face abuts the end face ring and the second protrusion fully enters the groove 30, the first protrusion can smoothly enter the groove on the other end face of the roller. To facilitate assembly, in a specific embodiment, the lengths l1 and l2 of the first and second protrusions along a direction perpendicular to the end face ring satisfy l1≤l2, and the depth d of the roller end face groove satisfies l2≤d.

[0033] During installation, slightly tilt roller 3 so that the groove on its upper side is aligned with the second protrusion first. Gently push the roller to smoothly insert the second protrusion into the upper groove. After the second protrusion is inserted into the upper groove, continue to move the roller end face upward until the roller end face contacts the end face ring. At this time, the lower end face of the roller should be equal to or slightly higher than the second protrusion. Then align the lower groove of the roller with the first protrusion and move it downward so that the first protrusion can smoothly enter the lower groove. When the roller is completely lowered into place, the first and second protrusions will be located in the grooves on both sides of the roller end face, respectively, completing the installation. The assembly process becomes simple and does not require complicated tools or equipment.

[0034] As a preferred embodiment of the present application, the protrusion 11 is truncated cone-shaped, and the shape of the groove 30 is adapted to the protrusion, with a clearance fit between the two. The protrusion is designed as a truncated cone, with its top diameter smaller than its bottom diameter, forming a gradually tapered structure. The shape of the groove closely matches the protrusion, that is, the bottom width of the groove is slightly larger than the top diameter of the protrusion, while the top width of the groove is similar to or slightly larger than the bottom diameter of the protrusion. This design ensures that the protrusion can smoothly enter and remain in the groove. During assembly, the protrusion can easily slide into the groove, and initial positioning can be achieved without precise alignment.

[0035] As a preferred embodiment of the present application, the separator 2 is connected to the side surfaces of the two end face rings 1. By connecting them on the side surfaces, a larger space can be formed on the other side, which is specifically used for installing and accommodating rollers. This design avoids direct conflict between the rollers and the separator, making the installation of the rollers more flexible and convenient.

[0036] As a preferred embodiment of the present application, a stress cutoff groove 12 is provided on the side of the end face ring facing away from the roller. The cutoff groove 12 extends from the inner side of the end face ring to the outer side. When the end face ring is stamped to form the convex portion, the material is subjected to strong tensile forces. These tensile forces cause stress concentration in the material around the processing area, which in turn causes cracks, deformation, or premature failure. The design of the stress cutoff groove allows these tensile stresses to be dispersed and cut off when they reach the groove, thereby reducing the degree of stress concentration. The processing method of the cutoff groove is coordinated with the overall processing process of the end face ring, and processing methods such as milling, wire cutting, and laser cutting are used.

[0037] As a preferred embodiment of the present application, a polytetrafluoroethylene coating is provided on the surface of the protrusion and inside the groove to reduce friction between the two.

[0038] As a preferred embodiment of the present application, the two end rings are symmetrically arranged. The symmetrical design helps achieve balance of the assembly. When the two end rings are symmetrically arranged, the torque and force distribution on the central axis or reference plane is more even, reducing vibration and noise caused by imbalance.

[0039] Anything not described in this utility model can be achieved by adopting or drawing on existing technologies.

[0040] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and such variations or substitutions are intended to fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. An integrated stamped convex retainer, characterized in that: It includes two integrally formed end face rings and multiple partition columns connecting the two end face rings. The partition columns are evenly and equidistantly distributed between the two end face rings to form a stable cage frame. Pockets for rollers to be placed are formed between adjacent partition columns. Multiple concave areas are formed on the side of the end face ring away from the roller through a stamping process. Correspondingly, on the side of the end face ring facing the roller, the concave area forms several convex portions that are integrally formed with the end ring surface so as to cooperate and connect with the groove on the roller end face.

2. The integral stamped bump retainer according to claim 1, characterized in that: The convex portion is located at the center line of the pocket hole, and the convex portions of the two end face rings are arranged opposite to each other.

3. The integral stamped bump retainer according to claim 1, characterized in that: The convex parts of the two end face rings are respectively the first convex part and the second convex part. When the roller end face abuts against the end face ring and the second convex part completely enters the groove, the first convex part can smoothly enter the groove of the other end face of the roller.

4. The integral stamped bump retainer according to claim 3, characterized in that: The lengths l1 and l2 of the first and second protrusions along the direction perpendicular to the end face ring satisfy l1≤l2, and the depth d of the roller end face groove satisfies l2≤d.

5. The integral stamped bump retainer according to claim 1, characterized in that: The convex portion is in a truncated cone shape, and the shape of the groove is adapted to the convex portion, and the two are clearance-matched.

6. The integral stamped bump retainer according to claim 1, characterized in that: The separation column is connected to the side surfaces of the two end face rings.

7. The integral stamped bump retainer according to claim 1, characterized in that: A stress truncation groove is provided on the side of the end face ring facing away from the roller, and the truncation groove extends from the inner side to the outer side of the end face ring.

8. The integral stamped bump retainer according to claim 1, characterized in that: A polytetrafluoroethylene coating is provided on the surface of the convex portion and in the groove to reduce friction therebetween.

9. The integral stamped bump retainer according to claim 1, characterized in that: The two end face rings are symmetrically arranged.

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