Novel low-friction ball bearing retainer

Abstract

The utility model discloses a novel low-friction ball bearing retainer, which belongs to the field of bearing retainers and comprises two coaxially arranged half retainers, the two half retainers are fixed through rivets, ball pockets are arranged on opposite surfaces of the two half retainers, pocket holes are formed by oppositely arranged ball pockets, oil grooves are formed in splicing contact surfaces of the two half retainers, and the oil grooves are communicated with the oil grooves. The two ends of the grooves are communicated with the adjacent ball pockets respectively to form the oil storage channels, under the conditions of high rotating speed and heavy load, sufficient lubricating grease can be continuously provided for the bearing, the lubricating grease in the oil storage channels can be dispersed into the pocket holes to lubricate the contact positions of the balls and the retainer, the lubricating grease can be more evenly distributed in the bearing, and the bearing quality is improved. The friction resistance is effectively reduced, the operation efficiency of the bearing is improved, the sufficient lubricating grease can reduce the direct contact between the balls and the retainer, the abrasion speed is reduced, the heat generated in the operation process of the bearing is also reduced, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] This application belongs to the field of bearing cages, and particularly relates to a new type of low-friction ball bearing cage. Background Art

[0002] Ball bearings are a widely used type of bearing, and their basic structure includes an outer ring, an inner ring, rollers, and a cage. Among them, the riveted cage is a common cage form in ball bearings. This cage is composed of two semi-circular parts, which are arranged along the same axis and fixed by rivets. On the opposite faces of the two semi-cages, there are designed ball pockets for accommodating the rollers. These ball pockets are combined to form pocket holes to ensure that the rollers can roll stably therein, and are suitable for various fields with high-speed rotation and high-precision requirements. However, in the case of high rotational speed and heavy load, the friction and heat inside the bearing will increase, which will accelerate the consumption and aging of the grease. The existing riveted cage structure of ball bearings is not conducive to oil storage. If the lubricating oil in the bearing is insufficient, it is very easy to cause insufficient lubrication, resulting in an increase in the frictional resistance inside the bearing, which will increase the friction between the balls and the cage. This friction will accelerate the wear of the bearing and shorten the life of the bearing. Therefore, the existing technology needs to be further improved and enhanced. Summary of the Utility Model

[0003] The present utility model provides a new type of low-friction ball bearing cage to at least solve or alleviate one or more technical problems in the existing technology, or at least provide a beneficial option.

[0004] To achieve the above object, the present utility model provides the following technical solutions:

[0005] A new type of low-friction ball bearing cage includes two semi-cages arranged coaxially. The two semi-cages are fixed by rivets. Ball pockets are provided on the opposite faces of the two semi-cages. The pocket holes are composed of the oppositely arranged ball pockets. An oil groove is provided on the splicing contact surface of the two semi-cages. The two ends of the oil groove are respectively communicated with adjacent ball pockets. The oppositely arranged oil grooves form an oil storage channel to increase the oil storage capacity of the cage.

[0006] The novel low-friction ball bearing cage of the present application forms an oil storage channel by arranging oil grooves on the splicing contact surfaces of the two half cages, and the two ends of the oil grooves are respectively communicated with adjacent ball pockets. This design effectively increases the oil storage capacity of the cage, that is, increases the oil storage capacity of the ball bearing. Under high-speed and heavy-load conditions, it can continuously provide sufficient lubricating grease for the bearing. The lubricating grease in the oil storage channel can be dispersed into the pocket holes to lubricate the contact positions between the balls and the cage, so that the lubricating grease can be more evenly distributed inside the bearing, effectively reducing the frictional resistance, improving the operating efficiency of the bearing. Sufficient lubricating grease can reduce the direct contact between the balls and the cage, reduce the wear rate, and also reduce the heat generated during the operation of the bearing, extending the service life of the bearing. At the same time, the good lubrication effect can also reduce the vibration and noise during the operation of the bearing, improving the stability and reliability of the bearing, and adapting to high-speed and heavy-load working conditions.

[0007] In a preferred implementation, multiple oil grooves are arranged and are set to avoid the rivet holes.

[0008] In a preferred implementation, one oil groove is arranged to penetrate through the rivet hole.

[0009] In a preferred implementation, the width of the oil groove is smaller than the diameter of the rivet hole.

[0010] In a preferred implementation, the rivet is provided with a radial through hole to communicate with the oil groove.

[0011] In a preferred implementation, the half cage is provided with an oil inlet hole on the surface facing the inner ring of the bearing, and the oil inlet hole communicates with the oil groove.

[0012] Under the action of centrifugal force, the grease located on the inner ring of the bearing can be thrown into the oil inlet hole and then enter the oil groove. During the operation of the bearing, the grease can be automatically replenished to ensure that the bearing is always in a good lubrication state.

[0013] In a preferred implementation, the cross-section of the oil storage channel is rectangular, circular or elliptical.

[0014] In a preferred implementation, the back surface of the half cage is provided with a weight-reducing groove, and the rivet hole is arranged in the weight-reducing groove.

[0015] On the back surface of the half cage, there are weight-reducing grooves. These weight-reducing grooves can be designed into different shapes and sizes according to needs, and the rivet holes are arranged in the weight-reducing grooves. Such a design not only ensures the fixing effect of the rivets, but also further reduces the weight of the cage, which helps to improve the dynamic performance of the bearing.

[0016] In a preferred implementation, the ball pocket surface is provided with an oil storage groove to reduce the weight of the cage and increase the oil storage capacity.

[0017] The oil storage tank can be located at the bottom or side of the ball pocket, and its shape and size can be optimized according to actual needs. The main function of the oil storage tank is to store lubricating grease to provide continuous lubrication for the balls during the operation of the bearing. At the same time, the design of the oil storage tank can also effectively reduce the weight of the cage and improve the overall performance of the bearing.

[0018] In a preferred implementation, the semi-cage is made of bakelite material.

[0019] The bakelite cage has good elasticity and is lighter than metal materials, which helps to reduce the weight of the overall bearing, thereby reducing energy consumption during operation. When the bakelite cage is working, it can effectively reduce friction and maintain a good operating state even in the absence of external lubrication. The surface of the cage is smooth and not easy to adsorb dust and other impurities. In the processing of iron cages, grease or defects on the surface will adsorb iron filings. The bakelite cage has high insulation performance and is suitable for use in electrical equipment or in humid environments.

[0020] The above structure has the following beneficial effects:

[0021] Through the design of the oil groove, the oil storage capacity of the cage can be significantly increased to ensure that the bearing always has enough lubricating grease under high-speed and heavy-load conditions. The design of the oil inlet hole enables the grease to enter the oil groove for storage and be dispersed into each ball pocket to lubricate the contact position between the balls and the cage, which can improve the lubrication effect of the bearing, reduce the friction resistance, and improve the operating efficiency of the bearing. The good lubrication effect can reduce the wear and damage of the bearing, thereby extending the service life of the bearing. At the same time, the structure of this application is simple and easy to manufacture. When one of the semi-cages is damaged, only the damaged cage can be replaced, which greatly reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present application and do not constitute an improper limitation to the present utility model. In the drawings:

[0023] Figure 1 A schematic three-dimensional structure diagram of a schematic embodiment of the semi-cage of the present application is shown;

[0024] Figure 2 A schematic three-dimensional structure diagram of a schematic embodiment of the combination of two semi-cages of the present application is shown;

[0025] Figure 3 A schematic structure diagram of a schematic embodiment of the rivet of the present application is shown;

[0026] Reference numeral description:

[0027] 1 - Half cage; 10 - Ball pocket; 11 - Oil inlet hole; 12 - Oil groove; 13 - Oil storage channel; 14 - Rivet hole; 15 - Weight reduction groove; 16 - Oil storage tank; 2 - Rivet; 20 - Radial through hole. Specific embodiments

[0028] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. However, indicating a direct connection means that there is no connection relationship constructed through an excessive structure between the two connected main bodies, and only a connection structure is used to connect and form a whole. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, descriptions such as "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one such feature.

[0032] The present invention will be described below with reference to the accompanying drawings of the specification.

[0033] The specific solution adopted is:

[0034] AsFigures 1-3 As shown in the figure, the utility model provides a new type of low-friction ball bearing cage, which includes two semi-cages 1 arranged coaxially. The two semi-cages are fixed by rivets. Ball pockets 10 are provided on the opposite surfaces of the two semi-cages. The pocket holes are composed of oppositely arranged ball pockets. An oil groove 12 is provided on the splicing contact surface of the two semi-cages. Both ends of the oil groove communicate with adjacent ball pockets respectively. The oppositely arranged oil grooves form an oil storage channel 13 to increase the oil storage capacity of the cage.

[0035] For the new type of low-friction ball bearing cage of the present application, by setting an oil groove on the splicing contact surface of the two semi-cages, and both ends of the oil groove communicate with adjacent ball pockets respectively to form an oil storage channel, this design effectively increases the oil storage capacity of the cage. Thus, under high-speed and heavy-load conditions, it can continuously provide sufficient lubricating grease for the bearing. The lubricating grease in the oil storage channel can be dispersed into the pocket holes to lubricate the contact position between the balls and the cage, so that the lubricating grease can be more evenly distributed inside the bearing, effectively reducing the friction resistance, improving the operating efficiency of the bearing. Sufficient lubricating grease can reduce the direct contact between the balls and the cage, reduce the wear rate, and also reduce the heat generated during the operation of the bearing, extending the service life of the bearing. At the same time, the good lubrication effect can also reduce the vibration and noise during the operation of the bearing, improving the stability and reliability of the bearing, and adapting to high-speed and heavy-load working conditions.

[0036] The oil groove can be set in one of the following embodiments:

[0037] Embodiment 1: Multiple oil grooves are set and avoid the rivet holes.

[0038] On the splicing contact surface of the two semi-cages, multiple oil grooves are set. These oil grooves can not only effectively increase the oil storage capacity of the cage, but also ensure that during the operation of the bearing, the lubricating grease can be more evenly distributed inside the bearing. The design of multiple oil grooves can be adjusted according to specific requirements, such as the depth, width, length and other dimensional parameters of the oil grooves, as well as the spacing and arrangement mode between the oil grooves. When setting multiple oil grooves, avoid the rivet holes. Since the rivet is a key component connecting the two semi-cages, its position is fixed and immovable. Therefore, when designing the oil groove, it is necessary to ensure that the oil groove does not intersect or be too close to the rivet hole, so as not to affect the fixing effect of the rivet and the overall stability of the cage. When setting multiple oil grooves, consider optimizing the shape and structure of the oil groove to further improve the lubrication effect and the oil storage capacity of the cage. For example, different shapes of oil grooves such as rectangular, arc-shaped or semi-circular can be used to form rectangular, oval or circular oil storage channels.

[0039] Embodiment 2: One oil groove runs through the rivet hole. Further, the width of the oil groove is smaller than the diameter of the rivet hole 14 and the rivet is provided with a radial through hole to communicate with the oil groove.

[0040] In this improved solution, the design of the oil groove takes into account the existence of the center position of the rivet hole. On the splicing contact surface of the two half cages, a central oil groove is designed, and this oil groove will penetrate through some of the rivet holes. Such a design can directly connect the oil groove to the position of the rivet hole, providing lubricating grease for the area around the rivet hole. Further, the width of the oil groove is smaller than the diameter of the rivet hole to ensure that the rivet can be tightly fixed in the rivet hole, while avoiding the oversized oil groove from affecting the overall structural strength of the cage. To ensure the flow of lubricating oil, the rivet itself is also specially designed with radial through holes 20 inside, and these through holes are connected to the oil groove, enabling the lubricating grease to enter the area around the rivet hole through the through holes of the rivet 2, providing more comprehensive lubrication for the bearing.

[0041] The advantages of this design solution include that during the manufacturing process, only an oil groove needs to be machined on the cage and through holes need to be machined on the rivet, without additional complex processes.

[0042] As a preferred embodiment of the present application, the half cage is provided with an oil inlet hole 11 facing the inner ring surface of the bearing, and the oil inlet hole communicates with the oil groove. The half cage is provided with an oil inlet hole facing the inner ring surface of the bearing. The oil inlet hole is connected to the oil groove to ensure that the grease can smoothly enter the oil groove for storage. Under the action of centrifugal force, the grease located on the inner ring of the bearing can be thrown into the oil inlet hole and then enter the oil groove. During the operation of the bearing, the grease can be automatically replenished to ensure that the bearing is always in a good lubrication state.

[0043] As a preferred embodiment of the present application, as Figure 2 , the back surface of the half cage is provided with a weight reduction groove, and the rivet hole is arranged in the weight reduction groove. In order to reduce the weight of the cage and at the same time ensure the structural stability, on the back surface of the half cage, weight reduction grooves are provided. These weight reduction grooves can be designed into different shapes and sizes according to needs, and the rivet holes are arranged in the weight reduction grooves. Such a design not only ensures the fixing effect of the rivet but also further reduces the weight of the cage, contributing to improving the dynamic performance of the bearing.

[0044] As a preferred embodiment of the present application, the ball pocket surface is provided with an oil storage groove 16 to reduce the weight of the cage and increase the oil storage capacity. On the ball pocket surface of the cage, oil storage grooves are designed. These oil storage grooves can be located at the bottom or side of the ball pocket, for example, and the shape and size can be optimized according to actual needs. The main function of the oil storage groove is to store lubricating grease to provide continuous lubrication for the balls during the operation of the bearing. At the same time, the design of the oil storage groove can also effectively reduce the weight of the cage and improve the overall performance of the bearing.

[0045] As a preferred embodiment of the present application, the semi-cage is made of bakelite material. The bakelite cage has good elasticity and is lighter than metal materials, which helps to reduce the weight of the overall bearing, thereby reducing the energy consumption during operation. When the bakelite cage is working, it can effectively reduce friction and maintain a good operating state even in the absence of external lubrication. The surface of the cage is smooth and not easy to adsorb dust and other impurities. Grease or defects on the surface of the iron cage will adsorb iron filings during the processing. The bakelite cage has high insulation performance and is suitable for use in electrical equipment or in humid environments.

[0046] In the present utility model, the parts not described can be realized by adopting or referring to the existing technologies.

[0047] The above is only the specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various changes or substitutions, and these should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A new type of low-friction ball bearing cage, comprising two semi-cages arranged coaxially, the two semi-cages are fixed by rivets, and ball pockets are provided on the opposite surfaces of the two semi-cages. The pocket holes are composed of ball pockets arranged oppositely, and it is characterized in that, An oil groove is provided on the splicing contact surface of the two half cages. The two ends of the oil groove are respectively communicated with the adjacent ball pockets, and the relatively arranged oil grooves form an oil storage channel to increase the oil storage capacity of the cage. A single oil groove runs through the rivet hole, and the width of the oil groove is smaller than the diameter of the rivet hole. The rivet is provided with a radial through hole to communicate with the oil groove. An oil inlet hole is provided on the surface of the half cage facing the inner ring of the bearing, and the oil inlet hole is communicated with the oil groove.

2. The novel low-friction ball bearing cage according to claim 1, characterized in that, The cross-section of the oil storage channel is rectangular, circular or elliptical.

3. The novel low-friction ball bearing cage according to claim 1, characterized in that, A weight reduction groove is provided on the opposite side of the half cage, and the rivet hole is arranged in the weight reduction groove.

4. The novel low-friction ball bearing cage according to claim 1, characterized in that, An oil storage groove is provided on the ball pocket surface to reduce the weight of the cage and increase the oil storage capacity.

5. The novel low-friction ball bearing cage according to claim 1, characterized in that, The half cage is made of bakelite material.

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