A modular bearing cage and its manufacturing method

Abstract

This application discloses an assembled bearing cage and its manufacturing method. The assembled bearing cage is installed between the inner and outer rings of a bearing and includes a first protective part, a damping part, and a second protective part arranged sequentially from the outside to the inside. The first protective part consists of multiple first protective layers and includes multiple first receiving cavities. The damping part consists of multiple damping layers and includes multiple second receiving cavities. The second protective part consists of multiple second protective layers and includes multiple third receiving cavities. The multiple first, second, and third receiving cavities are sequentially aligned and connected to form multiple ball receiving cavities. Because the damping part consists of multiple damping layers, the damping layers that contact the first and second protective parts, respectively, transmit the vibration force inward sequentially, thus weakening the vibration among the multiple damping layers and improving the vibration resistance of the bearing cage.

Description

Technical Field

[0001] This application belongs to the field of bearing cage technology, specifically relating to an assembled bearing cage and its manufacturing method. Background Technology

[0002] Bearings, as a crucial transmission component, are hailed as the "joints" of industry and are widely used in aerospace, engineering machinery, textiles, vehicles, and other mechanical fields. A bearing mainly consists of an inner ring, outer ring, rolling elements, a bearing cage, and lubricant. The bearing cage, as a vital component, plays a crucial role in isolating the rolling elements, guiding their proper rotation, and preventing them from falling off.

[0003] Depending on the application scenario, different types of bearing cages need to be selected. For example, for bearings with heavy loads and high speeds, high-strength steel plate cages or copper alloy cages are usually used. However, steel plate cages have poor toughness and are prone to generating significant noise during operation, while copper alloy cages have good toughness and strength, but their cost is high and not suitable for large-scale applications. Therefore, how to design a bearing cage with high strength, low vibration, and low cost has become an urgent technical problem to be solved. Summary of the Invention

[0004] This application provides an assembled bearing cage and its manufacturing method to solve the technical problems of low structural strength, large vibration, and high production cost of traditional bearing cages.

[0005] The technical solution adopted in this application is as follows:

[0006] An assembled bearing cage, installed between the inner and outer rings of a bearing, includes a first protective part, a damping part, and a second protective part arranged sequentially from the outside to the inside. The first protective part consists of multiple first protective layers, each including multiple first receiving cavities. Each first protective layer has a first receiving hole, and the multiple first receiving holes together constitute the first receiving cavity. The damping part consists of multiple damping layers, each including multiple second receiving cavities. Each damping layer has a second receiving hole, and the multiple second receiving holes together constitute the second receiving cavity. The second protective part consists of multiple second protective layers, each including multiple third receiving cavities. Each second protective layer has a third receiving hole, and the multiple third receiving holes together constitute the third receiving cavity. The multiple first receiving cavities, second receiving cavities, and third receiving cavities are sequentially aligned and connected to form multiple ball receiving cavities.

[0007] The assembled bearing cage described in this application also includes the following additional technical features:

[0008] The first receiving hole, the second receiving hole, and the third receiving hole are all the same size and coincide along the projection from the first protective part to the second protective part.

[0009] Both the first protective layer and the second protective layer are annular structures made of steel; the number of the first protective layer is 4-6, and / or the number of the second protective layer is 4-6.

[0010] The damping layer is a ring structure made of copper alloy, and the number of damping layers is 2-4.

[0011] Each of the two adjacent first protective layers is provided with a first protrusion and a first inset portion. When the first protrusion and the first inset portion are engaged, the first receiving holes of the two adjacent first protective layers are aligned. Each of the two adjacent damping layers is provided with a second protrusion and a second inset portion. When the second protrusion and the second inset portion are engaged, the second receiving holes of the two adjacent damping layers are aligned. Each of the two adjacent second protective layers is provided with a third protrusion and a third inset portion. When the third protrusion and the third inset portion are engaged, the third receiving holes of the two adjacent second protective layers are aligned.

[0012] The first protective layer has multiple first injection grooves along its circumferential direction, and the first injection grooves of two adjacent first protective layers are aligned and connected; the damping layer has multiple second injection grooves along its circumferential direction, and the second injection grooves of two adjacent damping layers are aligned and connected; the second protective layer has multiple third injection grooves along its circumferential direction, and the third injection grooves of two adjacent second protective layers are aligned and connected; adjacent first injection grooves and second injection grooves, and adjacent second injection grooves and third injection grooves are aligned and connected; the first protective layer, the damping layer, and the second protective layer are connected by injecting molten aluminum into the first injection groove, the second injection groove, and the third injection groove.

[0013] This application also provides a method for manufacturing an assembled bearing cage, used to manufacture the assembled bearing cage as described above, comprising: S1: preparing steel plates to make a first protective layer blank and a second protective layer blank, preparing copper plates to make a damping layer blank, and applying a protective layer to each blank respectively; S2: irradiating the area of ​​the first protective layer blank without a first receiving hole with ultraviolet light, irradiating the area of ​​the damping layer blank without a second receiving hole with ultraviolet light, and irradiating the area of ​​the second protective layer blank without a third receiving hole with ultraviolet light; S3: cleaning each blank irradiated with ultraviolet light using a sodium carbonate solution to remove the protective layer that has not been irradiated with ultraviolet light; and then cleaning with an acidic etching solution. S1: Prepare the first protective layer blank and the second protective layer blank, remove the steel plate portion not covered by the protective layer to form the first receiving hole and the second receiving hole, then use hydrofluoric acid to soak and clean the damping layer, remove the copper plate portion not covered by the protective layer to form the second receiving hole, and then use an alkaline solution to clean the protective layer of each blank to obtain the first protective layer, the damping layer and the second protective layer respectively; S4: Arrange multiple first protective layers, damping layers and second protective layers from the outside to the inside, and align the first receiving hole, the second receiving hole and the third receiving hole in sequence, and pour aluminum liquid into the first filling tank, the second filling tank and the third filling tank. After the aluminum liquid solidifies, an assembled bearing cage is formed.

[0014] The manufacturing method of this assembled bearing cage also includes the following additional technical features:

[0015] In S1, the thickness of the steel plate is D1, and the thickness of the copper plate is D2; 0.26mm≤D1≤0.32mm, and or, 0.26mm≤D2≤0.32mm.

[0016] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0017] 1. The bearing cage of this application includes a first protective part, a second protective part, and a shock-absorbing part located between the first and second protective parts. The first and second protective parts primarily reinforce the structure of the bearing cage, ensuring sufficient structural strength to withstand high loads and high speeds. The shock-absorbing part effectively absorbs and reduces the vibrations of the first and second protective parts when they vibrate close together due to external impacts during operation, thus reducing the relative impact and significantly improving the bearing cage's vibration resistance. In summary, the arrangement of the first protective part, shock-absorbing part, and second protective part from the inside out allows the bearing cage of this application, when used in high-load and high-speed bearings, to significantly reduce the vibration impact it receives while maintaining high structural strength, thereby greatly improving the structural strength and service life of the bearing cage. Furthermore, since the first protective part of this application consists of multiple first protective layers, by opening... By setting a first receiving hole and then assembling it to obtain the first protective part, compared with the method of directly processing the entire blank, the method of setting the first receiving hole on each first protective layer in this application reduces the requirements for the cutting accuracy of the processing equipment. Only the size of the first receiving hole on each first protective layer needs to be calibrated, and first receiving cavities of different shapes and types can be assembled according to design needs. Similarly, the second receiving cavity of the shock-absorbing part and the third receiving cavity of the second protective part are also in the same way. By setting the first receiving hole, the second receiving hole and the third receiving hole of different sizes and shapes, ball receiving cavities of different sizes and forms can be assembled, which reduces the manufacturing difficulty of ball receiving cavities with complex structures and helps to improve the forming accuracy of ball receiving cavities. On this basis, since the shock-absorbing part is composed of multiple shock-absorbing layers, the shock-absorbing layers that are in contact with the first protective part and the second protective part will transmit the vibration force inward in sequence after receiving the vibration force from the first protective part and the second protective part, so that the vibration is weakened in sequence among the multiple shock-absorbing layers, further improving the shock-absorbing capacity of the shock-absorbing part, thereby improving the anti-vibration performance of the bearing cage.

[0018] 2. As a preferred embodiment of this application, the first receiving hole, the second receiving hole, and the third receiving hole are set to have the same size and overlapping projections. It is only necessary to open the first receiving hole at the preset position of each first protective layer, the second receiving hole at the preset position of each damping layer, and the third receiving hole at the preset position of each second protective layer, and then align and assemble them in sequence. This reduces the processing difficulty of each first protective layer, damping layer, and second protective layer, and improves the manufacturing efficiency of the bearing cage for balls with the same size along the thickness direction of the bearing cage.

[0019] 3. In a preferred embodiment of this application, the first and second protective layers are configured as annular structures made of steel, giving them high strength and toughness, effectively improving the structural strength of the bearing cage, and enabling the bearing cage to withstand larger loads and impacts. Furthermore, the steel-made first and second protective layers have strong wear resistance, which can extend the service life of the bearing cage for high-load bearings. Moreover, the steel-made first and second protective layers are easy to process; they can be manufactured by stamping or turning and then assembled sequentially into the first and second protective parts, which helps improve the production efficiency of the bearing cage. Additionally, setting the number of first and / or second protective layers to 4-6 ensures that the first and / or second protective layers have sufficient structural strength without excessively increasing the assembly difficulty of the first and / or second protective parts, further improving the production efficiency of the bearing cage.

[0020] 4. In a preferred embodiment of this application, the damping layer adopts a ring structure made of copper alloy, which gives the damping part high tensile strength and mechanical strength, and has a strong kinetic energy absorption effect in the face of vibration impact from the first protection part and the second protection part, thereby improving the durability of the bearing cage. Setting the number of damping layers to 2-4 ensures that the damping part has sufficient kinetic energy absorption function without excessively increasing the assembly and molding difficulty of the damping part, which helps to improve the production efficiency of the bearing cage. In addition, the damping part made of copper alloy also has good heat absorption performance, which can effectively absorb and release the heat generated when the first protection part and the second protection part are subjected to impact vibration, reducing the probability of high heat phenomenon during the operation of the bearing cage.

[0021] 5. As a preferred embodiment of this application, by providing a first protrusion and a first inset portion in adjacent first protective layers, when assembling the first protective layers, it is only necessary to align and fit the corresponding positions of the first protrusion and the first inset portion, and the first receiving holes on the two adjacent first protective layers can be accurately aligned, eliminating the need for alignment of the first receiving holes during the production process, thereby significantly improving the processing difficulty of the first protective portion; and greatly improving the manufacturing precision of the first receiving cavity, avoiding the occurrence of poor forming of the first receiving cavity due to misalignment of the first receiving hole; similarly, the provision of the second protrusion and the second inset portion, and the third protrusion and the third inset portion significantly improve the forming precision of the second receiving cavity and the third receiving cavity, as well as the manufacturing difficulty of the shock-absorbing portion and the second protective portion, and significantly improve the production efficiency of the bearing cage.

[0022] 6. In a preferred embodiment of this application, by providing a first filling tank, a second filling tank, and a third filling tank, when each first protective layer is aligned under the action of the first embedded part and the first protruding part, each damping layer is aligned under the action of the second embedded part and the second protruding part, and each second protective layer is aligned under the action of the third embedded part and the third protruding part, the first filling tank, the second filling tank, and the third filling tank are also aligned and connected in sequence. At this time, aluminum liquid is poured into the first filling tank, the second filling tank, and the third filling tank. After the aluminum liquid condenses, the connection of the first protective part, the damping part, and the second protective part can be realized. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0024] Figure 1 This is a schematic diagram of the assembled bearing cage according to one embodiment of this application;

[0025] Figure 2 This is a top view of an assembled bearing cage and balls according to one embodiment of this application;

[0026] Figure 3 This is a schematic diagram of the structure of the first protective part and the second protective part according to one embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the structure of the shock absorber in one embodiment of this application;

[0028] Figure 5 This is a schematic diagram of the structure of the first protective layer according to one embodiment of this application;

[0029] Figure 6 This is a schematic diagram of the structure of the damping layer according to one embodiment of this application;

[0030] Figure 7 This is a schematic diagram of the structure of the second protective layer according to one embodiment of this application;

[0031] Figure 8 This is a schematic diagram of the assembled bearing cage according to another embodiment of this application.

[0032] in:

[0033] 1 First protective part, 11 First protective layer, 111 First receiving hole, 112 First injection tank, 12 First receiving cavity;

[0034] 2. Vibration damping section, 21. Vibration damping layer, 211. Second receiving hole, 212. Second injection groove, 22. Second receiving cavity;

[0035] 3 Second protective part, 31 Second protective layer, 311 Third receiving hole, 312 Third injection tank, 22 Third receiving cavity;

[0036] 41 first embedded part, 42 second external protruding part, 43 third embedded part;

[0037] 5. Ball bearing housing cavity. Detailed Implementation

[0038] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0039] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0040] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not 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 application.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can 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. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0043] like Figures 1 to 8 As shown, a modular bearing cage is installed between the inner and outer rings of a bearing. It includes a first protective portion 1, a damping portion 2, and a second protective portion 3 arranged sequentially from the outside in. The first protective portion 1 consists of multiple first protective layers 11 and includes multiple first receiving cavities 12. Each first protective layer 11 has a first receiving hole 111, and the multiple first receiving holes 111 together constitute the first receiving cavity 12. The damping portion 2 consists of multiple damping layers 21 and includes multiple second receiving cavities 22. Each of the damping layers 21 is provided with a second receiving hole 211, and the multiple second receiving holes 211 together constitute the second receiving cavity 22; the second protective part 3 is composed of multiple second protective layers 31, and the second protective part 3 includes multiple third receiving cavities 22, each of the second protective layers 31 is provided with a third receiving hole 311, and the multiple third receiving holes 311 together constitute the third receiving cavity 22; the multiple first receiving cavities 12, the second receiving cavity 22, and the third receiving cavity 22 are sequentially aligned and connected to form multiple ball receiving cavities 5.

[0044] The bearing cage of this application includes a first protective part 1, a second protective part 3, and a shock-absorbing part 2 located between the first protective part 1 and the second protective part 3. The first protective part 1 and the second protective part 3 primarily reinforce the structure of the bearing cage, ensuring sufficient structural strength to withstand high loads and high speeds. The shock-absorbing part 2 effectively absorbs and reduces the vibrations of the first protective part 1 and the second protective part 3 when they vibrate close together due to external impacts during operation, thus lowering the vibration level of the first protective part 1. The relative impact between part 1 and the second protective part 3 significantly improves the vibration resistance of the bearing cage. In summary, the arrangement of the first protective part 1, the shock-absorbing part 2, and the second protective part 3 from the inside out allows the bearing cage of this application to significantly reduce the vibration impact it receives while maintaining high structural strength when used in bearings subjected to high loads and high speeds, thereby greatly improving the structural strength and service life of the bearing cage. Furthermore, since the first protective part 1 of this application is composed of multiple first protective layers 11, by opening first receiving holes 111 on the multiple first protective layers 11, and then... The first protective part 1 is assembled. Compared with the method of processing directly on the entire blank, the method of opening first receiving holes 111 on each first protective layer 11 in this application reduces the requirements for the cutting accuracy of the processing equipment. Only the size of the first receiving holes 111 on each first protective layer 11 needs to be calibrated, and first receiving cavities 12 of different shapes and types can be assembled according to design needs. Similarly, the second receiving cavity 22 of the shock-absorbing part 2 and the third receiving cavity 22 of the second protective part 3 are also assembled in this way. By opening first receiving holes 111, second receiving holes 211, and third receiving cavities of different sizes and shapes, the first receiving cavity 12 can be obtained. The inclusion of holes 311 allows for the assembly of ball bearing cavities 5 of different sizes, reducing the manufacturing difficulty of ball bearing cavities 5 with complex structures and helping to improve the forming accuracy of ball bearing cavities 5. On this basis, since the damping part 2 is composed of multiple damping layers 21, the damping layers 21 that are in contact with the first protection part 1 and the second protection part 3 will transmit the vibration force from the first protection part 1 and the second protection part 3 in sequence, so that the vibration is weakened in sequence among the multiple damping layers 21, further improving the damping capability of the damping part 2, thereby improving the anti-vibration performance of the bearing cage.

[0045] In a preferred embodiment of this application, the first receiving hole 111, the second receiving hole 211, and the third receiving hole 311 are of the same size and their projections coincide along the direction from the first protective part 1 to the second protective part 3. By setting the first receiving hole 111, the second receiving hole 211, and the third receiving hole 311 to be of the same size and with coincident projections, it is only necessary to open the first receiving hole 111 at a preset position on each first protective layer 11, the second receiving hole 211 at a preset position on each damping layer 21, and the third receiving hole 311 at a preset position on each second protective layer 31, and then align and assemble them sequentially. This reduces the processing difficulty of each first protective layer 11, damping layer 21, and second protective layer 31, and improves the manufacturing efficiency of the bearing cage for balls of the same size along the thickness direction of the bearing cage.

[0046] This application does not limit the relative dimensions and cross-sectional shape of the first receiving hole 111, the second receiving hole 211, and the third receiving hole 311. In another embodiment, when the ball bearing the bearing cage is a spherical ball bearing, the dimensions of the first receiving hole 111, the second receiving hole 211, and the third receiving hole 311 change sequentially and the inner wall of the hole is arc-shaped, so that the first protective layer 11, the shock-absorbing layer 21, and the second protective layer 31 are assembled to form a ball bearing cavity 5 adapted to the spherical ball bearing.

[0047] In a preferred embodiment of this application, both the first protective layer 11 and the second protective layer 31 are annular structures made of steel; the number of the first protective layer 11 is 4-6, and the number of the second protective layer 31 is 4-6. The first protective layer 11 and the second protective layer 31 are designed as annular structures made of steel, giving them high strength and toughness, effectively improving the structural strength of the bearing cage and enabling it to withstand greater loads and impacts. Furthermore, the steel material provides excellent wear resistance, which extends the service life of the bearing cage, especially for high-load bearings. Moreover, the steel material facilitates easy processing; the first protective layer 11 or the second protective layer 31 can be manufactured by stamping or turning and then assembled sequentially into the first protective part 1 and the second protective part 3, improving the production efficiency of the bearing cage. Additionally, setting the number of first protective layers 11 and second protective layers 31 to 4-6 ensures sufficient structural strength without excessively increasing the assembly difficulty of the first protective part 1 and the second protective part 3, further enhancing the production efficiency of the bearing cage.

[0048] In a preferred embodiment of this preferred embodiment, the damping layer 21 is a ring structure made of copper alloy, and the number of damping layers 21 is 2-4. The ring structure of the damping layer 21 made of copper alloy gives the damping part 2 high tensile and mechanical strength, providing strong kinetic energy absorption against the vibration impact of the first protective part 1 and the second protective part 3, thus improving the durability of the bearing cage. Setting the number of damping layers 21 to 2-4 ensures that the damping part 2 has sufficient kinetic energy absorption function without excessively increasing the assembly difficulty of the damping part 2, which helps improve the production efficiency of the bearing cage. Furthermore, the damping part 2 made of copper alloy also has good heat absorption properties, effectively absorbing and releasing the heat generated when the first protective part 1 and the second protective part 3 are subjected to impact vibration, reducing the probability of overheating during bearing cage operation.

[0049] In this embodiment, the copper alloy can be a copper-zinc alloy, a copper-tin alloy, a copper-aluminum alloy, or a copper-lead alloy, etc.

[0050] As a preferred example of this embodiment, two adjacent first protective layers 11 are respectively provided with a first outward protrusion and a first inward embedment 41. When the first outward protrusion and the first inward embedment 41 are engaged, the first receiving holes 111 of the two adjacent first protective layers 11 are aligned. Two adjacent shock-absorbing layers 21 are respectively provided with a second outward protrusion 42 and a second inward embedment. When the second outward protrusion 42 and the second inward embedment are engaged, the second receiving holes 211 of the two adjacent shock-absorbing layers 21 are aligned. Two adjacent second protective layers 31 are respectively provided with a third outward protrusion and a third inward embedment 43. When the third outward protrusion and the third inward embedment 43 are engaged, the third receiving holes 311 of the two adjacent second protective layers 31 are aligned.

[0051] By providing a first protrusion and a first inset 41 in adjacent first protective layers 11, when assembling the first protective layers 11, it is only necessary to align the corresponding positions of the first protrusion and the first inset 41, and the first receiving holes 111 on the two adjacent first protective layers 11 can be precisely aligned, eliminating the need for alignment of the first receiving holes 111 during the production process, thereby significantly improving the processing difficulty of the first protective part 1; and greatly improving the manufacturing precision of the first receiving cavity 12, avoiding the occurrence of poor molding of the first receiving cavity 12 due to the misalignment of the first receiving hole 111; similarly, the provision of the second protrusion 42 and the second inset, and the third protrusion and the third inset, significantly improves the molding precision of the second receiving cavity 22 and the third receiving cavity 22, as well as the manufacturing difficulty of the shock-absorbing part 2 and the second protective part 3, and significantly improves the production efficiency of the bearing cage.

[0052] Specifically, since the first protective layer 11, the shock-absorbing layer 21, and the second protective layer 31 are all annular, their production process can be carried out in the following manner: Taking the first protective layer 11 as an example, a rectangular steel plate is first used as the substrate of the first protective layer 11, and a first receiving hole 111 and a first outward protrusion are opened at a preset position. Then, another rectangular steel plate is used to make a second first protective layer 11, and a first receiving hole 111 and a first outward protrusion are opened at a preset position. At this time, the first outward protrusion of the second first protective layer 11 is embedded in the first inner part 41 of the first first protective layer 11, and at the same time, a first inner part 41 is formed on the back side of the second first protective layer 11 corresponding to the first outward protrusion. By analogy, after all the first protective layers 11, the shock-absorbing layer 21, and the second protective layer 31 are made, these plates are bent and closed to form an annular shape.

[0053] Preferably, the first protective layer 11 has a plurality of first injection grooves 112 along its circumferential direction, and the first injection grooves 112 of two adjacent first protective layers 11 are aligned and connected; the damping layer 21 has a plurality of second injection grooves 212 along its circumferential direction, and the second injection grooves 212 of two adjacent damping layers 21 are aligned and connected; the second protective layer 31 has a plurality of third injection grooves 312 along its circumferential direction, and the third injection grooves 312 of two adjacent second protective layers 31 are aligned and connected; adjacent first injection grooves 112 and second injection grooves 212, and adjacent second injection grooves 212 and third injection grooves 312 are aligned and connected; the first protective layer 11, the damping layer 21, and the second protective layer 31 are connected by injecting molten aluminum into the first injection grooves 112, the second injection grooves 212, and the third injection grooves 312. By setting up a first filling tank 112, a second filling tank 212, and a third filling tank 312, when each of the first protective layers 11 is aligned under the action of the first embedded part 41 and the first protruding part, each of the damping layers 21 is aligned under the action of the second embedded part and the second protruding part 42, and each of the second protective layers 31 is aligned under the action of the third embedded part 43 and the third protruding part, the first filling tank 112, the second filling tank 212, and the third filling tank 312 are also aligned and connected in sequence. At this time, aluminum liquid is poured into the first filling tank 112, the second filling tank 212, and the third filling tank 312. After the aluminum liquid condenses, the connection of the first protective part 1, the damping part 2, and the second protective part 3 can be realized.

[0054] A method for manufacturing an assembled bearing cage, used to manufacture the assembled bearing cage as described above, includes: S1: preparing steel plates to make a first protective layer blank and a second protective layer blank, preparing copper plates to make a damping layer blank, and applying a protective layer to each blank; S2: irradiating the area of ​​the first protective layer blank without a first receiving hole with ultraviolet light, irradiating the area of ​​the damping layer blank without a second receiving hole with ultraviolet light, and irradiating the area of ​​the second protective layer blank without a third receiving hole with ultraviolet light; S3: cleaning each blank irradiated with ultraviolet light using a sodium carbonate solution to remove the protective layer that was not irradiated with ultraviolet light; and then cleaning the first protective layer blank with an acidic etching solution. The protective layer blank and the second protective layer blank are prepared by removing the steel plate portion not covered by the protective layer to form the first and second receiving holes. Then, the damping layer is cleaned by immersion in fluorine acid to remove the copper plate portion not covered by the protective layer to form the second receiving hole. Then, the protective layer of each blank is cleaned by alkaline solution to obtain the first protective layer, the damping layer and the second protective layer respectively. S4: Multiple first protective layers, damping layers and second protective layers are arranged from the outside to the inside. After the first receiving hole, the second receiving hole and the third receiving hole are aligned in sequence, aluminum liquid is poured into the first filling tank, the second filling tank and the third filling tank. After the aluminum liquid solidifies, an assembled bearing cage is formed.

[0055] Specifically, the protective layer applied in S1 undergoes a polymerization reaction under ultraviolet light to form a fixed protective layer. The first protective layer, the second protective layer, and the damping layer that form the fixed protective layer are then immersed in a sodium carbonate solution. The sodium carbonate solution removes the areas not covered by the fixed protective layer, thereby etching out the first receiving hole, the second receiving hole, and the third receiving hole. Then, this part of the blank board is immersed in hydrofluoric acid, and the fixed protective layer on it is washed away. Then, it is arranged in sequence according to the method in S4. Each of the first protective layer, the damping layer, and the second protective layer is aligned in sequence under the action of the first embedded part and the first protruding part, the second embedded part and the second protruding part, and the third embedded part and the third protruding part, respectively. Each of the first receiving hole, the second receiving hole, and the third receiving hole is aligned in sequence to form a ball receiving cavity. Each of the first pouring groove, the second pouring groove, and the third pouring groove is aligned and connected. After the aluminum liquid is poured and the aluminum liquid is cooled, the bearing cage is manufactured.

[0056] Preferably, the thickness of the steel plate in S1 is D1, and the thickness of the copper plate is D2; 0.26mm≤D1≤0.32mm, and or 0.26mm≤D2≤0.32mm. This setting ensures that the steel plate and copper plate have sufficient structural strength to withstand subsequent processing.

[0057] Preferably, the protective layer is a mixture of photosensitizer, acrylic acid, ethyl acetate, phthalate, hydroxybenzoate, and polyamide. This mixture can undergo a chemical reaction under ultraviolet light to form a fixed protective layer.

[0058] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0059] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0060] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A modular bearing cage, installed between the inner and outer rings of a bearing, characterized in that, It includes a first protective section, a shock-absorbing section, and a second protective section arranged sequentially from the outside to the inside, wherein: The first protective part is composed of multiple first protective layers. The first protective part includes multiple first receiving cavities. Each first protective layer is provided with a first receiving hole. The multiple first receiving holes together constitute the first receiving cavity. The damping part is composed of multiple damping layers, and the damping part includes multiple second receiving cavities. Each damping layer is provided with a second receiving hole, and the multiple second receiving holes together constitute the second receiving cavity. The second protective part is composed of multiple second protective layers, and the second protective part includes multiple third receiving cavities. Each second protective layer is provided with a third receiving hole, and the multiple third receiving holes together constitute the third receiving cavity. Multiple first receiving cavities, second receiving cavities, and third receiving cavities are sequentially aligned and connected to form multiple ball receiving cavities.

2. The assembled bearing cage according to claim 1, characterized in that, The first receiving hole, the second receiving hole, and the third receiving hole are all the same size and coincide along the projection from the first protective part to the second protective part.

3. The assembled bearing cage according to claim 1, characterized in that, Both the first protective layer and the second protective layer are annular structures made of steel; the number of the first protective layer is 4-6, and / or the number of the second protective layer is 4-6.

4. The assembled bearing cage according to claim 3, characterized in that, The damping layer is a ring structure made of copper alloy, and the number of damping layers is 2-4.

5. The assembled bearing cage according to claim 4, characterized in that, Each of the two adjacent first protective layers is provided with a first protrusion and a first inset portion. When the first protrusion and the first inset portion are engaged, the first receiving holes of the two adjacent first protective layers are aligned. Each of the two adjacent damping layers is provided with a second protrusion and a second inset portion. When the second protrusion and the second inset portion are engaged, the second receiving holes of the two adjacent damping layers are aligned. Each of the two adjacent second protective layers is provided with a third protrusion and a third inset portion. When the third protrusion and the third inset portion are engaged, the third receiving holes of the two adjacent second protective layers are aligned.

6. The assembled bearing cage according to claim 5, characterized in that, The first protective layer has multiple first injection grooves along its circumferential direction, and the first injection grooves of two adjacent first protective layers are aligned and connected; the damping layer has multiple second injection grooves along its circumferential direction, and the second injection grooves of two adjacent damping layers are aligned and connected; the second protective layer has multiple third injection grooves along its circumferential direction, and the third injection grooves of two adjacent second protective layers are aligned and connected; adjacent first injection grooves and second injection grooves, and adjacent second injection grooves and third injection grooves are aligned and connected; the first protective layer, the damping layer, and the second protective layer are connected by injecting molten aluminum into the first injection groove, the second injection groove, and the third injection groove.

7. A method for manufacturing an assembled bearing cage, characterized in that, For manufacturing the assembled bearing cage as described in any one of claims 1 to 6, comprising: S1: Prepare steel plates to make the first protective layer blank and the second protective layer blank, prepare copper plates to make the shock-absorbing layer blank, and apply protective layers to each blank respectively. S2: Irradiate the area of ​​the first protective layer blank without the first receiving hole with ultraviolet light, irradiate the area of ​​the shock-absorbing layer blank without the second receiving hole with ultraviolet light, and irradiate the area of ​​the second protective layer blank without the third receiving hole with ultraviolet light. S3: The blanks irradiated with ultraviolet light are cleaned with sodium carbonate solution to remove the protective layer that has not been irradiated with ultraviolet light; then the first protective layer blanks and the second protective layer blanks are cleaned with acidic etching solution to remove the steel plate parts that are not covered by the protective layer, so as to form the first and second receiving holes; then the shock-absorbing layer is cleaned by immersion in fluorescent acid to remove the copper plate parts that are not covered by the protective layer, so as to form the second receiving hole; then the protective layer of each blank is cleaned with alkaline solution to obtain the first protective layer, the shock-absorbing layer and the second protective layer respectively. S4: Arrange multiple first protective layers, shock-absorbing layers, and second protective layers from the outside to the inside, and align the first receiving hole, second receiving hole, and third receiving hole in sequence. Then, pour molten aluminum into the first filling tank, second filling tank, and third filling tank. After the molten aluminum solidifies, an assembled bearing cage is formed.

8. The method for manufacturing the assembled bearing cage according to claim 7, characterized in that, In S1, the thickness of the steel plate is D1, and the thickness of the copper plate is D2; 0.26mm≤D1≤0.32mm, and or, 0.26mm≤D2≤0.32mm.

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