Assembled bearing retainer and manufacturing method thereof

Abstract

The invention discloses a split mounting type bearing retainer and a manufacturing method thereof.The split mounting type bearing retainer is installed between an inner ring and an outer ring of a bearing and comprises a first protection part, a damping part and a second protection part which are sequentially arranged from outside to inside, the first protection part is composed of a plurality of first protection layers, and the second protection part is composed of a plurality of second protection layers; the first protection part comprises a plurality of first containing cavities, the damping part is composed of a plurality of damping layers, the damping part comprises a plurality of second containing cavities, the second protection part is composed of a plurality of second protection layers, the second protection part comprises a plurality of third containing cavities, and the first containing cavities, the second containing cavities and the third containing cavities are sequentially communicated in an aligned mode to form a plurality of ball containing cavities. The damping part consists of a plurality of damping layers, so that the damping layers which are in contact with the first protection part and the second protection part respectively receive the vibration acting force, the vibration acting force is sequentially transmitted inwards, and the vibration is sequentially weakened among the plurality of damping layers, so that the anti-vibration performance of the bearing retainer is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of bearing retainers, and specifically relates to an assembled bearing retainer and a manufacturing method thereof. Background Art

[0002] As an important transmission component, bearings are known as the "joints" of industry and are widely used in aerospace, engineering machinery, textiles, vehicles and other mechanical fields. Bearings are mainly composed of inner rings, outer rings, rolling elements, bearing cages and lubricants. As an important component of bearings, bearing cages play a critical role in isolating rolling elements, guiding and driving rolling elements to roll correctly, and preventing rolling elements from falling off.

[0003] Different types of bearing cages need to be selected according to different application scenarios. For example, for some bearings with heavy loads and high speeds, high-strength steel cages or copper alloy cages are usually used. However, steel cages have poor toughness and are prone to produce loud noises during operation. Copper alloy cages have good toughness and strength, but they are expensive and not suitable for large-scale applications. Therefore, how to design a bearing cage with high strength, low vibration and low cost has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] The present application provides an assembled bearing retainer and a manufacturing method thereof to solve the technical problems of low structural strength, large vibration and high production cost of traditional bearing retainers.

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

[0006] A assembled bearing retainer is installed between the inner ring and the outer ring of the bearing, and includes a first protection part, a shock-absorbing part and a second protection part arranged in sequence from the outside to the inside, wherein: the first protection part is composed of a plurality of first protection layers, the first protection part includes a plurality of first accommodating cavities, each of the first protection layers is respectively provided with a first accommodating hole, and the plurality of first accommodating holes together constitute the first accommodating cavity; the shock-absorbing part is composed of a plurality of shock-absorbing layers, the shock-absorbing part includes a plurality of second accommodating cavities, each of the shock-absorbing layers is respectively provided with a second accommodating hole, and the plurality of second accommodating holes together constitute the second accommodating cavity; the second protection part is composed of a plurality of second protection layers, the second protection part includes a plurality of third accommodating cavities, each of the second protection layers is respectively provided with a third accommodating hole, and the plurality of third accommodating holes together constitute the third accommodating cavity; the plurality of first accommodating cavities, the second accommodating cavities, and the third accommodating cavities are sequentially aligned and connected to form a plurality of ball accommodating cavities.

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

[0008] The first accommodating holes, the second accommodating holes, and the third accommodating holes have the same size, and their projections along the direction from the first protection portion to the second protection portion overlap.

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

[0010] The shock-absorbing layer is an annular structure made of copper alloy, and the number of the shock-absorbing layers is 2-4.

[0011] The two adjacent first protective layers are respectively provided with a first outer protrusion and a first inner embedding portion. When the first outer protrusion and the first inner embedding portion are embedded in each other, the first receiving holes of the two adjacent first protective layers are aligned; the two adjacent shock-absorbing layers are respectively provided with a second outer protrusion and a second inner embedding portion. When the second outer protrusion and the second inner embedding portion are embedded in each other, the second receiving holes of the two adjacent shock-absorbing layers are aligned; the two adjacent second protective layers are respectively provided with a third outer protrusion and a third inner embedding portion. When the third outer protrusion and the third inner embedding portion are embedded in each other, the third receiving holes of the two adjacent second protective layers are aligned.

[0012] The first protective layer is provided with a plurality of first pouring grooves along its circumferential direction, and the first pouring grooves of two adjacent first protective layers are aligned and connected; the shock-absorbing layer is provided with a plurality of second pouring grooves along its circumferential direction, and the second pouring grooves of two adjacent shock-absorbing layers are aligned and connected; the second protective layer is provided with a plurality of third pouring grooves along its circumferential direction, and the third pouring grooves of two adjacent second protective layers are aligned and connected; adjacent first pouring grooves and second pouring grooves, and adjacent second pouring grooves and third pouring grooves are aligned and connected; the first protective layer, the shock-absorbing layer and the second protective layer are connected by pouring aluminum liquid into the first pouring groove, the second pouring groove and the third pouring groove.

[0013] The present application also provides a method for manufacturing an assembled bearing retainer, which is used to manufacture the assembled bearing retainer as described above, comprising: S1: preparing steel plates to make a first protective layer blank and a second protective layer blank, preparing a copper plate to make a shock-absorbing layer blank, and applying a protective layer to each blank respectively; S2: irradiating ultraviolet light to the area of ​​the first protective layer blank where the first receiving hole is not provided, irradiating ultraviolet light to the area of ​​the shock-absorbing layer blank where the second receiving hole is not provided, and irradiating ultraviolet light to the area of ​​the second protective layer blank where the third receiving hole is not provided; S3: using a sodium carbonate solution to clean each blank irradiated with ultraviolet light to remove the protective layer not irradiated with ultraviolet light; and then using an acidic corrosive solution to clean the blanks. Process the first protective layer blank and the second protective layer blank, remove the steel plate portion not covered by the protective layer to form a first receiving hole and a second receiving hole, then use fluoric acid to immerse and clean the shock-absorbing layer, remove the copper plate portion not covered by the protective layer to form a second receiving hole, and then use an alkaline solution to clean the protective layers of each blank to obtain a first protective layer, a shock-absorbing layer and a second protective layer respectively; S4: arrange multiple first protective layers, shock-absorbing layers and second protective layers from the outside to the inside in sequence, and align the first receiving hole, the second receiving hole and the third receiving hole in sequence, and then pour aluminum liquid into the first pouring groove, the second pouring groove and the third pouring groove, and after the aluminum liquid condenses, an assembled bearing retainer is formed.

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

[0015] 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.

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

[0017] 1. The bearing retainer of the present application comprises a first protection part, a second protection part and a shock-absorbing part located between the first protection part and the second protection part, wherein the first protection part and the second protection part mainly play a role in reinforcing the structure of the bearing retainer, ensuring that the bearing retainer has sufficient structural strength to cope with high-load and high-speed working conditions; and the setting of the shock-absorbing part enables the shock-absorbing part to effectively absorb and reduce the vibration of the first protection part and the second protection part when the first protection part and the second protection part are close to each other due to external force impact during operation, thereby reducing the relative impact of the first protection part and the second protection part, thereby greatly improving the anti-vibration performance of the bearing retainer; in summary, the setting of the first protection part, the shock-absorbing part and the second protection part from the inside to the outside enables the bearing retainer of the present application to significantly reduce the vibration impact it suffers on the basis of having a higher structural strength when applied to high-load and high-speed bearings, thereby greatly improving the structural strength and service life of the bearing retainer; in addition, since the first protection part of the present application is composed of a plurality of first protection layers, by opening a plurality of first protection layers A first accommodating hole is provided, and then the first protecting part is assembled. Compared with the method of directly processing the entire blank, the method of respectively opening the first accommodating holes on each first protecting layer in the present application reduces the requirements on the cutting accuracy of the processing equipment. It is only necessary to calibrate the size of the first accommodating holes on each first protecting layer, and first accommodating cavities of different shapes and types can be assembled according to design requirements; similarly, the second accommodating cavity of the shock absorbing part and the third accommodating cavity of the second protecting part are also in this way. By opening first accommodating holes, second accommodating holes and third accommodating holes of different sizes and shapes, ball accommodating cavities of different sizes and forms are assembled, which reduces the manufacturing difficulty of ball accommodating cavities of complex structural forms and helps to improve the molding accuracy of the ball accommodating cavities; on this basis, since the shock absorbing part is composed of multiple shock absorbing layers, the shock absorbing layers respectively contacting the first protecting part and the second protecting part will transmit inward in turn after receiving the vibration force from the first protecting part and the second protecting part, and the vibration will be weakened in turn between 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 retainer.

[0018] 2. As a preferred embodiment of the present application, the first accommodating hole, the second accommodating hole and the third accommodating hole are set to have the same size and overlapping projections. It is only necessary to open the first accommodating hole at the preset position of each first protective layer, the second accommodating hole at the preset position of each shock-absorbing layer, and the third accommodating hole at the preset position of each second protective layer and assemble them in sequence, thereby reducing the difficulty of processing each first protective layer, shock-absorbing layer and second protective layer, and improving the manufacturing efficiency of the bearing retainer for balls with the same size along the thickness direction of the bearing retainer.

[0019] 3. As a preferred embodiment of the present application, the first protective layer and the second protective layer are set to an annular structure made of steel, so that the first protective layer and the second protective layer have high strength and toughness, effectively improve the structural strength of the bearing retainer, and enable the bearing retainer to withstand large loads and impacts; in addition, the first protective layer and the second protective layer made of steel have strong wear resistance. For high-load bearings, good wear resistance can increase the service life of the bearing retainer; furthermore, the first protective layer and the second protective layer made of steel have the advantage of easy processing. The first protective layer or the second protective layer can be made by stamping or turning and assembled into the first protective part and the second protective part in sequence, which helps to improve the production efficiency of the bearing retainer; in addition, the number of the first protective layer and / or the second protective layer is set to 4-6, so that the first protective layer and / or the second protective layer do not excessively increase the difficulty of assembling and forming the first protective part and / or the second protective part on the basis of having sufficient structural strength, which helps to improve the production efficiency of the bearing retainer.

[0020] 4. As a preferred embodiment of the present application, the shock-absorbing layer adopts an annular structure made of copper alloy, so that the shock-absorbing part has higher tensile strength and mechanical strength, and has a stronger kinetic energy absorption effect when facing the vibration impact of the first protection part and the second protection part, thereby improving the durability of the bearing retainer; and the number of shock-absorbing layers is set to 2-4, so that the shock-absorbing part does not excessively increase the difficulty of assembling and forming the shock-absorbing part on the basis of having sufficient kinetic energy absorption function, which helps to improve the production efficiency of the bearing retainer; in addition, the shock-absorbing part made of copper alloy also has good heat absorption performance, which can have a good absorption and slow-release effect on the heat generated by the first protection part and the second protection part when they are impacted and vibrated, thereby reducing the probability of high heat generation when the bearing retainer is working.

[0021] 5. As a preferred embodiment of the present application, by providing a first outer protrusion and a first inner embedded portion on adjacent first protective layers, when assembling the first protective layers, the first receiving holes on the two adjacent first protective layers can be accurately aligned only by aligning the first outer protrusion and the first inner embedded portion according to their corresponding positions, thereby eliminating the need to align the first receiving holes during the production process, thereby greatly improving the processing difficulty of the first protective portion; and greatly improving the manufacturing accuracy of the first receiving cavity, thereby avoiding the occurrence of poor molding of the first receiving cavity caused by the alignment deviation of the first receiving hole; similarly, the setting of the second outer protrusion and the second outer embedded portion, and the third outer protrusion and the third outer embedded portion greatly improves the molding accuracy of the second receiving cavity and the third receiving cavity and the manufacturing difficulty of the shock absorbing portion and the second protective portion, thereby greatly improving the production efficiency of the bearing retainer.

[0022] 6. As a preferred embodiment of the present application, by setting a first pouring groove, a second pouring groove and a third pouring groove, when each first protective layer is aligned under the action of the first embedded part and the first outer convex part, each shock-absorbing layer is aligned under the action of the second embedded part and the second outer convex part, and each second protective layer is aligned under the action of the third embedded part and the third outer convex part, each first pouring groove, the second pouring groove and the third pouring groove are also aligned and connected in sequence. At this time, aluminum liquid is poured into the first pouring groove, the second pouring groove and the third pouring groove. After the aluminum liquid is condensed, the connection between the first protective part, the shock-absorbing part and the second protective part can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 This is a schematic structural diagram of an assembled bearing retainer in one implementation of the present application;

[0025] Figure 2 A top view of an assembled bearing cage and a ball according to an embodiment of the present application;

[0026] Figure 3 This is a schematic diagram of the structure of the first protection part and the second protection part in one implementation mode of the present application;

[0027] Figure 4 This is a schematic structural diagram of a shock absorbing part in one embodiment of the present application;

[0028] Figure 5 This is a schematic structural diagram of the first protective layer in one implementation of the present application;

[0029] Figure 6 This is a schematic diagram of the structure of the shock-absorbing layer in one embodiment of the present application;

[0030] Figure 7 This is a schematic diagram of the structure of the second protective layer in one implementation of the present application;

[0031] Figure 8 This is a schematic structural diagram of an assembled bearing retainer in another embodiment of the present application.

[0032] in:

[0033] 1 first protection portion, 11 first protection layer, 111 first receiving hole, 112 first pouring groove, 12 first receiving cavity;

[0034] 2 shock absorbing part, 21 shock absorbing layer, 211 second receiving hole, 212 second pouring groove, 22 second receiving cavity;

[0035] 3 second protection portion, 31 second protection layer, 311 third receiving hole, 312 third pouring groove, 22 third receiving cavity;

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

[0037] 5 Ball receiving chamber. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0040] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0043] like Figures 1 to 8 As shown, an assembled bearing retainer is installed between the inner ring and the outer ring of the bearing, and includes a first protection part 1, a shock absorbing part 2 and a second protection part 3 arranged in sequence from the outside to the inside, wherein: the first protection part 1 is composed of a plurality of first protection layers 11, the first protection part 1 includes a plurality of first accommodation cavities 12, each of the first protection layers 11 is respectively provided with a first accommodation hole 111, and the plurality of first accommodation holes 111 together constitute the first accommodation cavity 12; the shock absorbing part 2 is composed of a plurality of shock absorbing layers 21, and the shock absorbing part 2 includes a plurality of second accommodation cavities 22 Each of the shock-absorbing layers 21 is respectively provided with a second accommodating hole 211, and a plurality of the second accommodating holes 211 together constitute the second accommodating cavity 22; the second protective portion 3 is composed of a plurality of second protective layers 31, and the second protective portion 3 includes a plurality of third accommodating cavities 22, each of the second protective layers 31 is respectively provided with a third accommodating hole 311, and a plurality of the third accommodating holes 311 together constitute the third accommodating cavity 22; a plurality of the first accommodating cavities 12, the second accommodating cavities 22, and the third accommodating cavities 22 are sequentially aligned and connected to form a plurality of ball accommodating cavities 5.

[0044] The bearing retainer of the present application includes a first protecting portion 1, a second protecting portion 3 and a shock absorbing portion 2 located between the first protecting portion 1 and the second protecting portion 3, wherein the first protecting portion 1 and the second protecting portion 3 mainly play a role in reinforcing the structure of the bearing retainer, ensuring that the bearing retainer has sufficient structural strength to cope with high-load and high-speed working conditions; and the setting of the shock absorbing portion 2 enables the shock absorbing portion 2 to effectively absorb and reduce the vibration of the first protecting portion 1 and the second protecting portion 3 when the first protecting portion 1 and the second protecting portion 3 are vibrated close to each other due to external force during operation, thereby reducing the vibration of the first protecting portion 1 and the second protecting portion 3. The relative impact between the first protection part 1 and the second protection part 3 is reduced, thereby greatly improving the anti-vibration performance of the bearing retainer; in summary, the arrangement of the first protection part 1, the shock absorbing part 2 and the second protection part 3 from the inside to the outside enables the bearing retainer of the present application to be used in high-load and high-speed bearings. On the basis of having a high structural strength, it greatly reduces the vibration impact it suffers, thereby greatly improving the structural strength and service life of the bearing retainer; in addition, since the first protection part 1 of the present application is composed of a plurality of first protective layers 11, by opening the first receiving holes 111 on the plurality of first protective layers 11, and then The first protection part 1 is assembled. Compared with the method of directly processing the entire blank, the method of respectively opening the first receiving holes 111 on each first protective layer 11 in the present application reduces the requirement on the cutting accuracy of the processing equipment. It is only necessary to calibrate the size of the first receiving holes 111 on each first protective layer 11, and first receiving cavities 12 of different shapes and types can be assembled according to design requirements; similarly, the second receiving cavity 22 of the shock absorbing part 2 and the third receiving cavity 22 of the second protection part 3 are also in this way. By opening the first receiving holes 111, the second receiving holes 211 and the third receiving cavities 22 of different sizes and shapes, The nanoholes 311 are assembled to obtain ball accommodating cavities 5 of different sizes, which reduces the difficulty of manufacturing the ball accommodating cavities 5 of complex structures and helps to improve the molding accuracy of the ball accommodating cavities 5; on this basis, since the shock absorbing part 2 is composed of multiple shock absorbing layers 21, the shock absorbing layers 21 that are in contact with the first protection part 1 and the second protection part 3 respectively will transmit the vibration force from the first protection part 1 and the second protection part 3 in turn inward and make the vibration be weakened in turn between the multiple shock absorbing layers 21, further improving the shock absorbing capacity of the shock absorbing part 2, thereby improving the anti-vibration performance of the bearing retainer.

[0045] As a preferred embodiment of the present application, the first receiving holes 111, the second receiving holes 211, and the third receiving holes 311 have the same size and overlap in projection along the direction from the first protection portion 1 to the second protection portion 3. The first receiving holes 111, the second receiving holes 211, and the third receiving holes 311 are set to have the same size and overlap in projection, and it is only necessary to open the first receiving holes 111 at the preset position of each first protection layer 11, the second receiving holes 211 at the preset position of each shock-absorbing layer 21, and the third receiving holes 311 at the preset position of each second protection layer 31, and align and assemble them in sequence, which reduces the difficulty of processing each first protection layer 11, shock-absorbing layer 21, and second protection layer 31, and improves the manufacturing efficiency of the bearing retainer for balls with the same size along the thickness direction of the bearing retainer.

[0046] The present application does not limit the relative sizes and cross-sectional forms of the first receiving hole 111, the second receiving hole 211, and the third receiving hole 311. In another embodiment, when the ball carried by the bearing retainer is a spherical ball, the sizes of the first receiving hole 111, the second receiving hole 211, and the third receiving hole 311 change sequentially and the inner walls of the holes are 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 receiving cavity 5 suitable for the spherical ball.

[0047] As a preferred embodiment of the present application, the first protective layer 11 and the second protective layer 31 are both annular structures made of steel; the number of the first protective layers 11 is 4-6, and the number of the second protective layers 31 is 4-6. The first protective layer 11 and the second protective layer 31 are set as an annular structure made of steel, so that the first protective layer 11 and the second protective layer 31 have high strength and toughness, effectively improve the structural strength of the bearing cage, and enable the bearing cage to withstand large loads and impacts; in addition, the first protective layer 11 and the second protective layer 31 made of steel have strong wear resistance. For high-load bearings, good wear resistance can increase the service life of the bearing cage; furthermore, the first protective layer 11 and the second protective layer 31 made of steel have the advantage of easy processing. The first protective layer 11 or the second protective layer 31 can be made by stamping or turning and assembled into the first protective part 1 and the second protective part 3 in sequence, which helps to improve the production efficiency of the bearing cage; in addition, the number of the first protective layer 11 and the second protective layer 31 is set to 4-6, so that the first protective layer 11 and the second protective layer 31 have sufficient structural strength without excessively increasing the difficulty of assembling and forming the first protective part 1 and the second protective part 3, which helps to improve the production efficiency of the bearing cage.

[0048] As a preferred embodiment of this preferred implementation, the shock-absorbing layer 21 is an annular structure made of copper alloy, and the number of the shock-absorbing layers 21 is 2-4. The shock-absorbing layer 21 is an annular structure made of copper alloy, so that the shock-absorbing part 2 has high tensile strength and mechanical strength, and has a strong kinetic energy absorption effect in the face of the vibration impact of the first protection part 1 and the second protection part 3, thereby improving the durability of the bearing retainer; and the number of shock-absorbing layers 21 is set to 2-4, so that the shock-absorbing part 2 has sufficient kinetic energy absorption function, and does not excessively increase the difficulty of assembling and forming the shock-absorbing part 2, which helps to improve the production efficiency of the bearing retainer; in addition, the shock-absorbing part 2 made of copper alloy also has good heat absorption performance, which can have a good absorption and slow release effect on the heat generated by the first protection part 1 and the second protection part 3 when they are impacted and vibrated, thereby reducing the probability of high heat phenomenon when the bearing retainer is working.

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

[0050] As a preferred example under the present embodiment, two adjacent first protective layers 11 are respectively provided with a first outer protrusion and a first inner embedding portion 41, and when the first outer protrusion and the first inner embedding portion 41 are engaged with each other, 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 outer protrusion 42 and a second inner embedding portion, and when the second outer protrusion 42 and the second inner embedding portion are engaged with each other, 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 outer protrusion and a third inner embedding portion 43, and when the third outer protrusion and the third inner embedding portion 43 are engaged with each other, the third receiving holes 311 of the two adjacent second protective layers 31 are aligned with each other.

[0051] By providing the first outer protrusion and the first inner embedded portion 41 on the adjacent first protective layers 11, when assembling the first protective layer 11, it is only necessary to align the first outer protrusion and the first inner embedded portion 41 according to the corresponding positions, and the first receiving holes 111 on the two adjacent first protective layers 11 can be accurately aligned, eliminating the need to align the first receiving holes 111 during the production process, thereby greatly improving the processing difficulty of the first protective portion 1; and greatly improving the manufacturing accuracy of the first receiving cavity 12, avoiding the occurrence of poor molding of the first receiving cavity 12 due to the alignment deviation of the first receiving hole 111; similarly, the setting of the second outer protrusion 42 and the second outer embedded portion, and the third outer protrusion and the third outer embedded portion greatly improves the molding accuracy of the second receiving cavity 22 and the third receiving cavity 22, as well as the manufacturing difficulty of the shock absorbing portion 2 and the second protective portion 3, and greatly improves the production efficiency of the bearing retainer.

[0052] Specifically, since the first protective layer 11, the shock-absorbing layer 21, and the second protective layer 31 are all annular, the following method can be used in their production process: taking the first protective layer 11 as an example, first use a rectangular steel plate as the substrate of the first protective layer 11, open a first receiving hole 111 and a first convex portion at a preset position, and then use another rectangular steel plate to make the second first protective layer 11 on it, open a first receiving hole 111 and a first convex portion at a preset position, at this time, the first convex portion of the second first protective layer 11 is embedded in the first embedded portion 41 of the first first protective layer 11, and at the same time, the first embedded portion 41 is formed on the back of the second first protective layer 11 corresponding to the first convex portion. Similarly, after all the first protective layers 11, shock-absorbing layers 21, and second protective layers 31 are made, these plates are bent and enclosed to form a ring.

[0053] Preferably, the first protective layer 11 is provided with a plurality of first pouring grooves 112 along its circumferential direction, and the first pouring grooves 112 of two adjacent first protective layers 11 are aligned and connected; the shock-absorbing layer 21 is provided with a plurality of second pouring grooves 212 along its circumferential direction, and the second pouring grooves 212 of two adjacent shock-absorbing layers 21 are aligned and connected; the second protective layer 31 is provided with a plurality of third pouring grooves 312 along its circumferential direction, and the third pouring grooves 312 of two adjacent second protective layers 31 are aligned and connected; adjacent first pouring grooves 112 and second pouring grooves 212, and adjacent second pouring grooves 212 and third pouring grooves 312 are aligned and connected; the first protective layer 11, the shock-absorbing layer 21 and the second protective layer 31 are connected by pouring aluminum liquid into the first pouring grooves 112, the second pouring grooves 212 and the third pouring grooves 312. By providing the first pouring groove 112, the second pouring groove 212 and the third pouring groove 312, when each first protective layer 11 is aligned under the action of the first embedded part 41 and the first outer protrusion, each shock-absorbing layer 21 is aligned under the action of the second embedded part and the second outer protrusion 42, and each second protective layer 31 is aligned under the action of the third embedded part 43 and the third outer protrusion, each first pouring groove 112, the second pouring groove 212 and the third pouring groove 312 are also aligned and connected in sequence. At this time, aluminum liquid is poured into the first pouring groove 112, the second pouring groove 212 and the third pouring groove 312. After the aluminum liquid is condensed, the connection between the first protective part 1, the shock-absorbing part 2 and the second protective part 3 can be achieved.

[0054] A method for manufacturing an assembled bearing retainer, used for manufacturing the assembled bearing retainer as described above, comprising: S1: preparing steel plates to make a first protective layer blank and a second protective layer blank, preparing a copper plate to make a shock-absorbing layer blank, and applying a protective layer to each blank respectively; S2: irradiating ultraviolet light to an area of ​​the first protective layer blank where a first receiving hole is not provided, irradiating ultraviolet light to an area of ​​the shock-absorbing layer blank where a second receiving hole is not provided, and irradiating ultraviolet light to an area of ​​the second protective layer blank where a third receiving hole is not provided; S3: using a sodium carbonate solution to clean each blank irradiated with ultraviolet light to remove the protective layer not irradiated with ultraviolet light; and then using an acidic corrosive solution to clean the first protective layer blank. The protective layer blank and the second protective layer blank are used to remove the steel plate portion not covered by the protective layer to form a first receiving hole and a second receiving hole, and then the shock-absorbing layer is cleaned by immersion in fluoric acid, and the copper plate portion not covered by the protective layer is removed to form a second receiving hole, and then the protective layers of each blank are cleaned by an alkaline solution to obtain the first protective layer, the shock-absorbing layer and the second protective layer respectively; S4: Arrange the multiple first protective layers, the shock-absorbing layer and the second protective layers from the outside to the inside in sequence, and align the first receiving hole, the second receiving hole and the third receiving hole in sequence, and then pour aluminum liquid into the first pouring groove, the second pouring groove and the third pouring groove, and after the aluminum liquid condenses, an assembled bearing retainer is formed.

[0055] Specifically, the protective layer applied in S1 will undergo a polymerization reaction under the action of ultraviolet light and form a fixed protective layer. The first protective layer, the second protective layer and the shock-absorbing layer forming the fixed protective layer are immersed in a sodium carbonate solution. The sodium carbonate solution will remove the area 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 original embryo plate is immersed in fluoric acid, and the fixed protective layer thereon is cleaned off. Then, the original embryo plate is arranged in sequence according to the method in S4. The first protective layer, the shock-absorbing layer and the second protective layer are aligned in sequence under the action of the first embedded part and the first convex part, the second embedded part and the second convex part, and the third embedded part and the third convex part. The first receiving holes, the second receiving holes and the third receiving holes are aligned in sequence to form a ball receiving cavity. The first pouring grooves, the second pouring grooves and the third pouring grooves are aligned and connected. After the aluminum liquid is poured and condensed, the bearing retainer is manufactured.

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

[0057] Preferably, the protective layer is a mixture of photosensitizer, acrylic acid, ethyl acetate, phthalate, hydroxybenzoate, and polyamide, which can react chemically under the action of ultraviolet light to form a fixed protective layer.

[0058] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

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

[0060] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An assembled bearing retainer, installed between the inner ring and the outer ring of the bearing, characterized in that: It includes a first protection part, a shock absorbing part and a second protection part which are arranged in sequence from the outside to the inside, wherein: The first protection part is composed of a plurality of first protection layers, the first protection part includes a plurality of first accommodation cavities, each of the first protection layers is respectively provided with a first accommodation hole, and the plurality of first accommodation holes together constitute the first accommodation cavity; The shock absorbing part is composed of a plurality of shock absorbing layers, and the shock absorbing part includes a plurality of second accommodating cavities, each of the shock absorbing layers is respectively provided with a second accommodating hole, and the plurality of the second accommodating holes together constitute the second accommodating cavity; The second protection part is composed of a plurality of second protection layers, the second protection part includes a plurality of third accommodating cavities, each of the second protection layers is respectively provided with a third accommodating hole, and the plurality of third accommodating holes together constitute the third accommodating cavity; The first accommodating chambers, the second accommodating chambers, and the third accommodating chambers are aligned and connected in sequence to form a plurality of ball accommodating chambers.

2. The assembled bearing retainer according to claim 1, characterized in that: The first accommodating holes, the second accommodating holes, and the third accommodating holes have the same size, and their projections along the direction from the first protection portion to the second protection portion overlap.

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

4. The assembled bearing retainer according to claim 3, characterized in that: The shock-absorbing layer is an annular structure made of copper alloy, and the number of the shock-absorbing layers is 2-4.

5. The assembled bearing retainer according to claim 4, characterized in that: The two adjacent first protective layers are respectively provided with a first outer protrusion and a first inner embedding portion. When the first outer protrusion and the first inner embedding portion are embedded in each other, the first receiving holes of the two adjacent first protective layers are aligned; the two adjacent shock-absorbing layers are respectively provided with a second outer protrusion and a second inner embedding portion. When the second outer protrusion and the second inner embedding portion are embedded in each other, the second receiving holes of the two adjacent shock-absorbing layers are aligned; the two adjacent second protective layers are respectively provided with a third outer protrusion and a third inner embedding portion. When the third outer protrusion and the third inner embedding portion are embedded in each other, the third receiving holes of the two adjacent second protective layers are aligned.

6. The assembled bearing retainer according to claim 5, characterized in that: The first protective layer is provided with a plurality of first pouring grooves along its circumferential direction, and the first pouring grooves of two adjacent first protective layers are aligned and connected; the shock-absorbing layer is provided with a plurality of second pouring grooves along its circumferential direction, and the second pouring grooves of two adjacent shock-absorbing layers are aligned and connected; the second protective layer is provided with a plurality of third pouring grooves along its circumferential direction, and the third pouring grooves of two adjacent second protective layers are aligned and connected; adjacent first pouring grooves and second pouring grooves, and adjacent second pouring grooves and third pouring grooves are aligned and connected; the first protective layer, the shock-absorbing layer and the second protective layer are connected by pouring aluminum liquid into the first pouring groove, the second pouring groove and the third pouring groove.

7. A method for manufacturing an assembled bearing cage, characterized in that: Used to manufacture the assembled bearing retainer according to any one of claims 1 to 6, comprising: S1: preparing steel plates to make the first protective layer blank and the second protective layer blank, preparing copper plates to make the shock-absorbing layer blank, and applying protective layers to each blank respectively; S2: irradiating the area of ​​the first protective layer blank without the first receiving hole with ultraviolet light, irradiating the area of ​​the shock-absorbing layer blank without the second receiving hole with ultraviolet light, and irradiating the area of ​​the second protective layer blank without the third receiving hole with ultraviolet light; S3: using a sodium carbonate solution to clean each original embryo that has been irradiated with ultraviolet light to remove the protective layer that has not been irradiated with ultraviolet light; then using an acidic corrosive solution to clean the first protective layer original embryo and the second protective layer original embryo, removing the portion of the steel plate that is not covered with the protective layer to form a first receiving hole and a second receiving hole, then using fluoric acid to soak and clean the shock-absorbing layer, removing the portion of the copper plate that is not covered with the protective layer to form a second receiving hole, and then using an alkaline solution to clean the protective layer of each original embryo, to obtain a first protective layer, a shock-absorbing layer, and a second protective layer, respectively; S4: Arrange multiple first protective layers, shock-absorbing layers and second protective layers from outside to inside in sequence, align the first receiving hole, the second receiving hole and the third receiving hole in sequence, and then pour aluminum liquid into the first pouring groove, the second pouring groove and the third pouring groove. After the aluminum liquid condenses, an assembled bearing retainer is formed.

8. The method for manufacturing an assembled bearing retainer according to claim 7, characterized in that: 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.

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