Deep groove ball cage with riveting structure and riveting method

Abstract

The application discloses a deep-groove ball retainer with a riveting structure and a riveting method, which comprises a first retainer body and a second retainer body which are symmetrical and have the same structure, and the first retainer body and the second retainer body are connected through a rivet and a rivet shell; the rivet comprises a first rivet rod and a second rivet rod which are coaxially arranged, the diameter of the first rivet rod is larger than that of the second rivet rod, and the first rivet rod is in interference fit with a first fixed hole on the first retainer body; the rivet shell is installed in a second fixed hole of the second retainer body; the second rivet rod is inserted into the rivet shell, and the rivet shell is in interference fit with the second rivet rod and the second fixed hole respectively. The application solves the problem that the existing rivet is prone to loosening or even falling off relative to the retainer body, thereby causing the failure of the retainer.

Description

Technical Field

[0001] This invention belongs to the field of bearing cage technology, specifically relating to a deep groove ball cage with a riveting structure and a riveting method. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] Deep groove ball bearings are one of the most widely used types of rolling bearings, possessing advantages such as simple structure, high load-bearing capacity, and smooth operation. They are widely used in motors, machine tools, automobiles, and household appliances. The cage of a deep groove ball bearing is an important component of the bearing; its function is to evenly separate the rolling elements and guide them to move along the correct track, reducing friction and wear between the rolling elements and ensuring the normal operation of the bearing.

[0004] Currently, deep groove ball cages are typically composed of two half-cages connected by riveting. Existing riveting methods mostly use ordinary rivets to fasten the two half-cages together. The rivets pass through fixing holes on the two half-cages, and the connection is achieved by the deformation of the rivet heads at both ends. However, the fixation between ordinary rivets and the fixing holes on the cage mainly relies on an interference fit, lacking an effective anti-loosening structure. Under the vibration and impact loads generated by the high-speed rotation of the bearing, the rivets are prone to loosening or even falling off relative to the cage, leading to cage failure, affecting the normal operation of the bearing, and posing a safety hazard. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a deep groove ball retainer with a riveting structure and a riveting method, which solves the problem that existing rivets are prone to loosening or even falling off relative to the retainer, leading to retainer failure.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: In a first aspect, the present invention provides a deep groove ball retainer with a riveting structure, comprising a first frame and a second frame having the same structure and being symmetrically arranged, wherein the first frame and the second frame are riveted together by rivets and rivet shells. The rivet includes a rivet head, a rivet shank, and a first rivet shank and a second rivet shank arranged coaxially, with the rivet head, first rivet shank, second rivet shank, and rivet shank arranged sequentially. The rivet head has a chamfer at the end away from the first rivet shank, and the rivet shank is frustum-shaped, with its large end fixedly connected to the second rivet shank. The diameter of the first rivet shank is larger than the diameter of the second rivet shank, and the first rivet shank is interference-fitted with the first fixing hole on the first frame. The rivet shell is installed in the second fixing hole of the second frame. The second rivet shank is inserted into the rivet shell, and the rivet shell is interference-fitted with both the second rivet shank and the second fixing hole.

[0007] As a further implementation, both the first frame and the second frame include multiple ball pockets and connecting plates, with the ball pockets and connecting plates spaced apart; the ball pockets and connecting plates are fixedly connected.

[0008] As a further implementation, the first fixing hole is provided on the connecting plate of the first frame, and the second fixing hole is provided on the connecting plate of the second frame.

[0009] As a further implementation, a plurality of fixing teeth are provided circumferentially on the side wall of the first nail rod, and the fixing teeth are embedded in the first frame at the edge of the first fixing hole.

[0010] As a further implementation, a guide slope is provided at one end of the first nail bar near the second nail bar, and the guide slope is arranged along the circumference of the first nail bar.

[0011] As a further implementation, the fixing tooth is elongated and its length is arranged along the axial direction of the first nail rod; the cross-sectional shape of the fixing tooth is triangular or trapezoidal.

[0012] As a further implementation, the nail head, first nail rod, second nail rod, nail head, and fixing teeth are manufactured by integral molding.

[0013] As a further implementation, the nail shell includes a nail shell body and a nail shell cap, both of which are hollow tubular structures. The nail shell body and the nail shell cap are fixedly connected, and the outer diameter of the nail shell cap is larger than the outer diameter of the nail shell body. The nail shell body is interference-fitted with the second fixing hole.

[0014] As a further implementation, the nail shell body and the nail shell cap are integrally formed, and the end of the nail shell cap away from the nail shell body is provided with a chamfer or rounded corner.

[0015] Secondly, the present invention also provides a riveting method for a deep groove ball retainer with a riveting structure, comprising the following steps: Align the first frame with the second frame, so that the first fixing hole of the first frame is aligned with the second fixing hole of the second frame; The nail shell body is pressed into the second fixing hole from the outside of the second frame, so that the nail shell body and the second fixing hole are interference fit, and the nail shell cap abuts against the outer side of the second frame. The rivet is inserted from the outside of the first frame, the first rivet shank passes through the first fixing hole, and the head of the second rivet shank faces the second frame. Under pressure, the fixing teeth punch out a groove on the hole wall of the first fixing hole to match the fixing teeth, so that the fixing teeth are embedded in the hole wall of the first fixing hole, and the rivet head abuts against the outer side of the first frame. Continue applying pressure to insert the second nail shank into the nail housing cavity. An interference fit is formed between the second nail shank and the nail housing. Finally, the nail head deforms under pressure, making its outline larger than the inner diameter of the nail head, thus completing the riveting connection.

[0016] Compared with the prior art, the advantages and positive effects of this invention are: This invention forms a double interference fit through the interference fit between the first rivet shank and the first fixing hole, the rivet shell and the second rivet shank, and the rivet shell and the second fixing hole, significantly improving the pull-out resistance of the riveted connection. The rivet shell is locked by the plastic deformation of the rivet head during the riveting process, achieving riveting. The synergistic effect of the mechanical engagement of the fixing teeth and the interference fit effectively solves the problem of loosening and falling off existing rivets, improving the service life of the cage and the safety of bearing operation. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0018] Figure 1 This is a structural diagram of the deep groove ball cage of the present invention; Figure 2 This is a structural diagram of the rivet of the present invention; Figure 3 This is a structural diagram of the nail shell of the present invention.

[0019] In the diagram: 1. First retainer; 2. Rivet; 3. Rivet housing; 4. First retainer; 11. Ball pocket; 12. Connecting plate; 21. Nail head; 22. Boss; 23. Nail bar; 24. Nail head; 31. Lock head; 32. Lock tongue. Detailed Implementation

[0020] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0021] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. Example 1 This embodiment discloses a deep groove ball retainer with a riveting structure, such as Figures 1-3As shown, the system includes a first frame 1 and a second frame 4 with identical structures and symmetrical arrangement. The first frame 1 and the second frame 4 are riveted together by rivets 2 and rivet housings 3. The rivets 2 include a first rivet 22 and a second rivet 23 arranged coaxially. The diameter of the first rivet 22 is larger than the diameter of the second rivet 23, and the first rivet 22 is interference-fitted with the first fixing hole on the first frame 1. The rivet housing 3 is installed in the second fixing hole of the second frame 4. The second rivet 23 is inserted into the rivet housing 3, and the rivet housing 3 is interference-fitted with the second rivet 23 and the second fixing hole, respectively.

[0022] It is understandable that, such as Figure 2 As shown, the rivet 2 includes a first rivet 22 and a second rivet 23 arranged coaxially. The diameter of the first rivet 22 is larger than the diameter of the second rivet 23, so that the fit between the first rivet 22 and the first fixing hole on the first frame 1 is an interference fit. A rivet shell 3 can be provided between the second rivet 23 and the second fixing hole. The radial pressure generated by the interference fit makes the first rivet 22 and the hole wall of the first fixing hole fit tightly, providing basic connection strength.

[0023] As a further embodiment, a plurality of fixing teeth are provided circumferentially on the side wall of the first nail rod 22, and the fixing teeth are embedded in the first frame 1 at the edge of the first fixing hole. Several fixing teeth are arranged circumferentially on the side wall of the first rivet 22. The fixing teeth are embedded in the first frame 1 at the edge of the first fixing hole, forming a mechanical interlocking anti-loosening structure. During the riveting process, the fixing teeth punch grooves that match the shape of the fixing teeth on the wall of the first fixing hole. After the fixing teeth are embedded in the grooves, the axial side of the fixing teeth forms a mechanical lock with the groove wall, effectively preventing the rivet 2 from moving axially relative to the first frame 1. The fixing teeth are distributed circumferentially, and multiple fixing teeth form multi-point interlocking with the frame material, effectively preventing the rivet 2 from rotating circumferentially relative to the first frame 1.

[0024] The nail housing 3 is installed in the second fixing hole of the second frame 4. The nail housing 3 and the second fixing hole are interference-fitted to achieve reliable fixation between the nail housing 3 and the second frame 4. The second nail rod 23 is inserted into the hollow inner cavity of the nail housing 3. The outer wall of the second nail rod 23 and the inner wall of the nail housing 3 are interference-fitted to form a tight connection between the second nail rod 23 and the nail housing 3.

[0025] On the first frame 1 side, a dual fixation mechanism is achieved through the interference fit between the first rivet 22 and the first fixing hole, and the mechanical engagement of the fixing teeth. On the second frame 4 side, interference fits are achieved between the rivet housing 3 and the second fixing hole, as well as between the rivet housing 3 and the second rivet 23. The entire riveting connection forms a multi-fixing mechanism of triple interference fit plus mechanical engagement of the fixing teeth. Through the synergistic effect of multiple fixing mechanisms, the connection between the rivet 2 and the two frames is extremely strong. Under the vibration and impact load generated by the high-speed rotation of the bearing, the rivet 2 will not loosen or fall off, ensuring the long-term reliable operation of the cage.

[0026] like Figure 1 As shown, both the first frame 1 and the second frame 4 include multiple ball pockets 11 and connecting plates 12, with the ball pockets 11 and connecting plates 12 spaced apart. The ball pockets 11 and connecting plates 12 are fixedly connected by welding or integral molding. The connecting plate 12 of the first frame 1 is provided with a first fixing hole, and the connecting plate 12 of the second frame 4 is provided with a second fixing hole.

[0027] Specifically, both the first frame 1 and the second frame 4 include multiple ball pockets 11 and connecting plates 12, which are spaced apart to form a ring-shaped frame structure. The ball pockets 11 are semi-circular grooves used to accommodate and guide the rolling elements of the deep groove ball bearing. Adjacent ball pockets 11 are connected by connecting plates 12. The connecting plates 12 are flat or strip-shaped structures, providing mounting positions for riveted connections.

[0028] The ball pocket 11 and the connecting plate 12 are fixedly connected, and the connection method can be welding or integral molding. Welding is suitable for situations where the ball pocket 11 and the connecting plate 12 are manufactured separately and then assembled, and the ball pocket 11 and the connecting plate 12 are firmly connected by spot welding or seam welding. Integral molding means that the ball pocket 11 and the connecting plate 12 are formed in one piece through processes such as stamping, casting or additive manufacturing, and the entire frame is a one-piece structure without connecting interfaces, which has higher structural strength and dimensional accuracy.

[0029] The first fixing hole is located on the connecting plate 12 of the first frame 1, and the second fixing hole is located on the connecting plate 12 of the second frame 4. The connecting plate 12 has sufficient thickness and strength to withstand the pressure during the riveting process and the working load after riveting, avoiding the weakening of the structural strength of the ball pocket 11 by opening holes in it, and affecting the supporting and guiding function of the ball pocket 11 for the rolling elements. When the first frame 1 and the second frame 4 are engaged, the first fixing hole and the second fixing hole are coaxially aligned, providing accurate positioning for the installation of the rivet 2 and the rivet housing 3.

[0030] like Figure 2As shown, the rivet 2 also includes a rivet head 21 and a rivet 24, with the rivet head 21, first rivet shank 22, second rivet shank 23, and rivet head 24 arranged sequentially. The end of the rivet head 21 away from the first rivet shank 22 is chamfered, which can be either a chamfer or a rounded corner. The rivet head 24 is frustum-shaped, and its large end is fixedly connected to the second rivet shank 23. The end of the first rivet shank 22 near the second rivet shank 23 is provided with a guide slope, which is arranged circumferentially along the first rivet shank 22.

[0031] Understandably, the rivet head 21, the first rivet shank 22, the second rivet shank 23, and the rivet tip 24 are arranged coaxially in sequence to form the complete structure of the rivet 2. The rivet head 21 is located at one end of the rivet 2, and the end away from the first rivet shank 22 is provided with a chamfer or rounded corner. After riveting, the chamfer or rounded corner avoids damage to the surface of the attached structure by the sharp edge of the rivet head 21.

[0032] The rivet head 24 is located at the other end of the rivet 2. The rivet head 24 is frustoconical, with its large end fixedly connected to the second rivet shank 23 and its small end facing the insertion direction. When the second rivet shank 23 is inserted into the inner cavity of the rivet housing 3, the frustoconical shape of the rivet head 24 acts as a guide, guiding the second rivet shank 23 to smoothly insert into the rivet housing 3. In the final stage of riveting, pressure is continued to be applied, and the rivet head 24 undergoes plastic deformation under pressure. The outline of the rivet head 24 gradually expands, eventually making the outer outline dimension of the rivet head 24 larger than the inner diameter of the rivet housing 3. In this way, the rivet head 24 is locked inside the rivet housing 3 and cannot be removed from the rivet housing 3, thereby reliably locking the second rivet shank 23 inside the rivet housing 3, further enhancing the reliability of the riveting connection and preventing the rivet 2 from coming out in the axial direction.

[0033] A guide ramp is provided at one end of the first rivet 22 near the second rivet 23. The guide ramp is arranged circumferentially along the first rivet 22, forming a tapered transition section. The guide ramp plays a guiding role during the insertion of the rivet 2 into the first fixing hole: when the guide ramp contacts the edge of the entrance of the first fixing hole, the radial component of the force generated by the ramp causes the first rivet 22 to automatically center, guiding the rivet 2 to be smoothly inserted along the axial direction of the first fixing hole; at the same time, the tapered structure of the guide ramp helps the fixing teeth to gradually embed into the wall of the first fixing hole, avoiding excessive impact resistance on the fixing teeth in the initial stage of insertion, and ensuring the smooth progress of the riveting process.

[0034] As a further implementation, the fixing tooth is elongated and its length is arranged along the axial direction of the first nail rod 22; the cross-sectional shape of the fixing tooth is triangular or trapezoidal.

[0035] The fixing teeth are elongated and their length is arranged along the axial direction of the first rivet shank 22. The elongated fixing teeth increase the contact area between the fixing teeth and the material of the first frame 1, thereby improving the mechanical interlocking force. The fixing teeth extend axially, which can effectively prevent the rivet 2 from moving axially relative to the first frame 1. When the rivet 2 is subjected to axial tension, the axial side of the fixing teeth forms a mechanical lock with the groove wall in the frame material, which can withstand the tension and prevent the rivet 2 from being pulled out.

[0036] The cross-sectional shape of the fixing teeth is triangular or trapezoidal. Triangular cross-section fixing teeth have tips that easily embed into the frame material. During riveting, the tip of the fixing tooth first contacts the wall of the first fixing hole. The concentrated stress generated at the tip causes localized plastic deformation of the frame material, and the fixing tooth gradually embeds into the hole wall, forming a sharp cutting edge for better embedding. Trapezoidal cross-section fixing teeth have a wide, flat bottom surface, which increases the contact area with the frame material and improves the load-bearing capacity of the fixing teeth. After riveting, trapezoidal fixing teeth can withstand greater working loads and are less prone to shear failure.

[0037] Multiple fixing teeth are evenly distributed around the first rivet 22. For example, six, eight or more fixing teeth can be set. The evenly distributed fixing teeth ensure that the connection force between the rivet 2 and the first frame 1 is evenly distributed in the circumferential direction, avoiding local stress concentration and improving the overall reliability of the riveting connection.

[0038] As a further implementation, the rivet head 21, first rivet shank 22, second rivet shank 23, rivet head 24, and fixing teeth are manufactured using a one-piece molding process. One-piece molding avoids the gaps that occur when assembling multiple parts, improving the overall strength and rigidity of the rivet 2; the one-piece structure ensures dimensional accuracy and coaxiality between parts, guaranteeing the stability of the riveting quality; it simplifies the manufacturing process, reduces production costs, and is suitable for mass production. The one-piece molded rivet 2 can be manufactured using processes such as cold heading, warm heading, or precision forging, and the materials selected are metals with good plasticity and strength, such as carbon steel, alloy steel, or stainless steel.

[0039] like Figure 3 As shown, the nail shell 3 includes a nail shell body 31 and a nail shell cap 32. Both the nail shell body 31 and the nail shell cap 32 are hollow tubular structures. The nail shell body 31 and the nail shell cap 32 are fixedly connected, and the outer diameter of the nail shell cap 32 is larger than the outer diameter of the nail shell body 31. The nail shell body 31 is interference-fitted with the second fixing hole.

[0040] The nail housing body 31 is cylindrical, and its outer diameter is interference-fitted with the diameter of the second fixing hole. After the nail housing body 31 is inserted into the second fixing hole, radial pressure is generated between the outer wall of the nail housing body 31 and the wall of the second fixing hole, thus reliably fixing the nail housing 3 to the second frame 4. The outer diameter of the nail housing cap 32 is larger than that of the nail housing body 31. During the process of pressing the nail housing body 31 into the second fixing hole, the nail housing cap 32 abuts against the outer side of the second frame 4, limiting the insertion depth of the nail housing body 31, ensuring the accurate installation position of the nail housing 3, and preventing the nail housing body 31 from being pressed too deep or too shallow, which would affect the riveting quality.

[0041] The hollow tubular inner cavity of the nail housing 3 is used to accommodate the second nail rod 23. After the second nail rod 23 is inserted into the inner cavity of the nail housing 3, an interference fit is formed between the outer wall of the second nail rod 23 and the inner wall of the nail housing 3. The radial pressure generated by the interference fit makes the second nail rod 23 and the nail housing 3 fit tightly together, forming a firm connection. The nail housing 3 also forms a double interference fit with the second nail rod 23 and the second fixing hole. This double interference fit significantly improves the connection reliability of the second frame 4. Even under vibration and impact loads, the second nail rod 23 will not loosen from the nail housing 3, and the nail housing 3 will not loosen from the second fixing hole, ensuring the long-term stability of the riveting connection.

[0042] As a further implementation, the nail shell body 31 and the nail shell cap 32 are integrally formed, and the end of the nail shell cap 32 away from the nail shell body 31 is provided with a chamfer or rounded corner. The integral forming avoids stress concentration at the connection between the nail shell body 31 and the nail shell cap 32, improves the overall strength and reliability of the nail shell 3, and will not break at the connection interface when subjected to working loads.

[0043] The end of the nail cap 32 furthest from the nail body 31 is chamfered or rounded. The chamfer or rounded corner facilitates alignment and positioning of the nail shell 3 when it is pressed into the second fixing hole, reduces pressing resistance, and prevents damage to the surface of the second frame 4 from the end of the nail cap 32. The nail shell 3 can be manufactured by processes such as turning, stamping, or precision casting, and the material can be selected from metal materials with good strength and machinability, such as carbon steel, alloy steel, or copper alloy.

[0044] Example 2 This embodiment discloses a riveting method for a deep groove ball retainer with a riveting structure, comprising the following steps: The first frame 1 and the second frame 4 are aligned so that the first fixing hole of the first frame 1 is aligned with the second fixing hole of the second frame 4. When aligned, the first frame 1 and the second frame 4 are arranged symmetrically, the ball pockets 11 correspond to each other, the connecting plates 12 are aligned with each other, and the first fixing hole and the second fixing hole are located on the same axis, providing accurate positioning for subsequent riveting operations.

[0045] The nail shell body 31 of the nail shell 3 is pressed into the second fixing hole from the outside of the second frame 4, so that the nail shell body 31 and the second fixing hole are interference fit, and the nail shell cap 32 abuts against the outer side of the second frame 4.

[0046] Specifically, the nail housing body 31 of the nail housing 3 is aligned with the second fixing hole from the outside of the second frame 4, and pressure is applied to press the nail housing body 31 into the second fixing hole. The outer diameter of the nail housing body 31 and the diameter of the second fixing hole form an interference fit. During the pressing process, radial pressure is generated between the outer wall of the nail housing body 31 and the wall of the second fixing hole, thereby fixing the nail housing 3 to the second frame 4. The pressing operation continues until the nail housing cap 32 abuts against the outer side of the second frame 4. At this point, the nail housing 3 is installed, and the axis of the nail housing 3 coincides with the axis of the first fixing hole and the axis of the second fixing hole.

[0047] The rivet 2 is inserted from the outside of the first frame 1, the first rivet 22 passes through the first fixing hole, and one end of the rivet head 24 of the second rivet 23 faces the second frame 4. Under pressure, the fixing teeth punch out a groove on the hole wall of the first fixing hole to match the fixing teeth, so that the fixing teeth are embedded in the hole wall of the first fixing hole, and the rivet head 21 abuts against the outer side of the first frame 1.

[0048] The rivet 2 is inserted from the outside of the first frame 1, with one end of the rivet head 24 facing the second frame 4 and the other end of the rivet head 21 located outside the first frame 1. The first rivet shank 22 is aligned with the first fixing hole, and under pressure, the rivet 2 is inserted axially into the first fixing hole. During insertion, the fixing teeth on the first rivet shank 22 contact the wall of the first fixing hole. Under pressure, the fixing teeth punch grooves that match the shape of the fixing teeth into the wall of the first fixing hole, and the fixing teeth gradually embed into the grooves, achieving mechanical engagement between the fixing teeth and the first frame 1. At the same time, an interference fit between the first rivet shank 22 and the first fixing hole is also formed during insertion. The insertion operation continues until the end face of the rivet head 21 abuts against the outer side of the first frame 1. At this point, the fixing teeth are completely embedded in the wall of the first fixing hole, and the fixing of the first rivet shank 22 to the first frame 1 is completed.

[0049] Continue applying pressure to insert the second nail rod 23 into the inner cavity of the nail shell 3. An interference fit is formed between the second nail rod 23 and the nail shell 3. Finally, the nail head 24 deforms under pressure, making its outline larger than the inner diameter of the nail head 21, thus completing the riveting connection.

[0050] Specifically, with continued pressure, the second nail shank 23 passes through the first and second fixing holes and inserts into the inner cavity of the nail housing 3. The outer diameter of the second nail shank 23 and the inner diameter of the nail housing 3 form an interference fit. During the insertion of the second nail shank 23 into the inner cavity of the nail housing 3, radial pressure is generated between the outer wall of the second nail shank 23 and the inner wall of the nail housing 3, forming a tight fit. With continued pressure, under the action of continuously increasing pressure, the nail head 24 undergoes plastic deformation, and the outline of the nail head 24 gradually expands. Finally, the outer outline dimension of the nail head 24 is larger than the inner diameter of the nail housing 3, and the nail head 24 is locked at the end of the nail housing cap 32 and cannot be withdrawn from the nail housing 3, thereby reliably locking the second nail shank 23 inside the nail housing 3, completing the riveting connection.

[0051] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A deep groove ball retainer with a riveting structure, characterized in that, It includes a first frame and a second frame that are identical in structure and symmetrically arranged. The first frame and the second frame are riveted together by rivets and rivet shells. The rivet includes a rivet head, a rivet shank, and a first rivet shank and a second rivet shank arranged coaxially, with the rivet head, first rivet shank, second rivet shank, and rivet shank arranged sequentially. The rivet head has a chamfer at the end away from the first rivet shank, and the rivet shank is frustum-shaped, with its large end fixedly connected to the second rivet shank. The diameter of the first rivet shank is larger than the diameter of the second rivet shank, and the first rivet shank is interference-fitted with the first fixing hole on the first frame. The rivet shell is installed in the second fixing hole of the second frame. The second rivet shank is inserted into the rivet shell, and the rivet shell is interference-fitted with both the second rivet shank and the second fixing hole.

2. A deep groove ball retainer with a riveted structure as described in claim 1, characterized in that, Both the first frame and the second frame include multiple ball pockets and connecting plates, with the ball pockets and connecting plates spaced apart; the ball pockets and connecting plates are fixedly connected.

3. A deep groove ball retainer with a riveted structure as described in claim 2, characterized in that, The first frame has a first fixing hole on its connecting plate, and the second frame has a second fixing hole on its connecting plate.

4. A deep groove ball retainer with a riveted structure as described in claim 1, characterized in that, The first nail rod has several fixing teeth arranged circumferentially on its side wall, and the fixing teeth are embedded in the first frame at the edge of the first fixing hole.

5. A deep groove ball retainer with a riveted structure as described in claim 1, characterized in that, A guide slope is provided at one end of the first nail rod near the second nail rod, and the guide slope is arranged along the circumference of the first nail rod.

6. A deep groove ball retainer with a riveted structure as described in claim 5, characterized in that, The fixing tooth is elongated and its length is arranged along the axial direction of the first nail rod; the cross-sectional shape of the fixing tooth is triangular or trapezoidal.

7. A deep groove ball retainer with a riveted structure as described in claim 6, characterized in that, The nail head, first nail rod, second nail rod, nail head, and fixing teeth are manufactured by integral molding.

8. A deep groove ball retainer with a riveted structure as described in claim 1, characterized in that, The nail shell includes a nail shell body and a nail shell cap. Both the nail shell body and the nail shell cap are hollow tubular structures. The nail shell body and the nail shell cap are fixedly connected, and the outer diameter of the nail shell cap is larger than the outer diameter of the nail shell body. The nail shell body is interference-fitted with the second fixing hole.

9. A deep groove ball retainer with a riveted structure as described in claim 8, characterized in that, The nail shell body and the nail shell cap are integrally formed, and the end of the nail shell cap away from the nail shell body is provided with a chamfer or rounded corner.

10. A riveting method for a deep groove ball retainer with a riveting structure as described in any one of claims 1-9, characterized in that, Includes the following steps: Align the first frame with the second frame, so that the first fixing hole of the first frame is aligned with the second fixing hole of the second frame; The nail shell body is pressed into the second fixing hole from the outside of the second frame, so that the nail shell body and the second fixing hole are interference fit, and the nail shell cap abuts against the outer side of the second frame. The rivet is inserted from the outside of the first frame, the first rivet shank passes through the first fixing hole, and the head of the second rivet shank faces the second frame. Under pressure, the fixing teeth punch out a groove on the hole wall of the first fixing hole to match the fixing teeth, so that the fixing teeth are embedded in the hole wall of the first fixing hole, and the rivet head abuts against the outer side of the first frame. Continue applying pressure to insert the second nail shank into the nail housing cavity. An interference fit is formed between the second nail shank and the nail housing. Finally, the nail head deforms under pressure, making its outline larger than the inner diameter of the nail head, thus completing the riveting connection.

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