Auxiliary tool for copper plating of inner ring of thrust bearing
By designing auxiliary tooling for copper plating in the inner ring of the thrust bearing, including insulated outer cylinder, annular end cover and copper electrode tube, the problems of copper plating in the prior art are solved, and efficient and uniform Copper plating effect.
Patent Information
- Application Number
- CN202411606310.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-02-14
AI Technical Summary
The prior art has the problem of copper waste and inconvenient operation of copper plating of the inner ring of the thrust bearing during maintenance, and traditional methods require disassembly of the bearing, which is time-consuming and easy to lead to poor copper plating quality.
An auxiliary tool for copper plating of the inner ring of the thrust bearing is designed, including an insulated outer cylinder, an annular end cover and a copper electrode tube. Only the inner ring is exposed by installing the bearing into the insulated outer cylinder and pressing it with an annular end cover. In the inner wall, copper plating is used to use copper electrode tubes to conduct conductive fluid.
The tooling simplifies the copper plating process, reduces maintenance time, avoids copper waste, and ensures uniformity in copper plating quality, suitable for the actual maintenance environment of the factory.
Smart Images
Figure CN119433667A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of copper plating of bearing inner rings, in particular to auxiliary tooling for copper plating of thrust bearing inner rings. Background Art
[0002] The inner ring of a general thrust bearing does not need to be copper-plated, because the material used in the design has already taken into account wear resistance and corrosion resistance. The current material and structural design of the inner ring of the bearing are sufficient to cope with most working conditions.
[0003] However, in some special equipment and special environments, it is necessary to copper-plate the assembly ring surface of the inner ring of the thrust bearing. This type of bearing is characterized by strong load-bearing capacity and strong impact resistance.
[0004] However, when maintaining the equipment, the parts need to be removed for cleaning and maintenance, and the thrust bearing in the equipment needs to be maintained separately. Generally, the thrust bearing is cleaned and the inner wall of the inner ring is copper plated. However, copper plating maintenance is very difficult at present, and there are generally two options: the first is to send these bearings back to the bearing manufacturer and entrust them to re-copper plate maintenance; the second is that the factory directly disassembles this type of bearing, and then coats the other surfaces of the inner ring except the inner ring wall, and then puts it in the electroplating tank for copper plating. The first method requires a long wait, but the second method requires the factory to completely disassemble the thrust bearing and then copper plate the inner ring for maintenance, which takes a lot of time (increasing the maintenance time of the entire equipment).
[0005] Based on this, our company has designed a tool for copper plating the inner wall of the inner ring of the thrust bearing, which is particularly suitable for the maintenance of the thrust bearing during the maintenance of a certain equipment. Summary of the invention
[0006] The purpose of the present invention is to overcome the shortcomings of the prior art, provide an auxiliary tooling for copper plating of the inner ring of a thrust bearing, and solve the problems of copper waste and inconvenience of copper plating during maintenance of the existing thrust bearing.
[0007] It should be noted that when maintaining some large equipment, the thrust bearings in these equipment also need to be maintained; for example, if the inner wall of the inner ring of the thrust bearing is required to be copper-plated, it needs to be re-copper-plated. At present, the method of copper-plating the inner wall of the inner ring of this type of thrust bearing is very simple. The entire bearing is disassembled, and then the end face and outer ring surface of the inner ring are wrapped with tape, and then the inner ring is placed alone in the electroplating liquid pool to complete the copper plating. This will lead to the following problems: a. Before copper plating, the entire bearing needs to be disassembled, and after the copper plating is completed, it is very cumbersome to reinstall it; b. In a certain stable electroplating pool environment, the adhesive tape becomes less sticky and is very easy to fall off, resulting in the infiltration of electroplating liquid into the end face and outer ring surface of the bearing, affecting the copper plating quality.
[0008] Therefore, the purpose of the present invention is to avoid copper waste, reduce the time of bearing maintenance, and strive to make bearing maintenance simpler and more convenient.
[0009] The purpose of the present invention is achieved through the following technical solutions:
[0010] First, an auxiliary tooling for copper plating of the inner ring of a thrust bearing, wherein the thrust bearing is formed of an outer ring, a ball, and an inner ring, and the three can be in contact and conduct electricity, including an insulating outer cylinder, an annular end cover, and a copper electrode tube;
[0011] The lower inner wall of the insulating outer cylinder has a stepped surface, a plurality of bearings are placed in the insulating outer cylinder, and the corresponding bearings are pressed onto the stepped surface by using an annular end cover;
[0012] Between adjacent bearings, an annular insulating sealing gasket is provided between the inner rings, and an annular conductive silicone gasket is provided between the outer rings; a corresponding annular insulating sealing gasket is also provided between the inner ring of the bearing, the corresponding annular end cover and the pressing surface of the step surface; a corresponding annular conductive silicone gasket is also provided between the outer ring of the bearing, the annular end cover and the pressing surface of the step surface;
[0013] The insulating outer cylinder and the annular end cover are also provided with a sealing ring, and the balls and the outer ring can be sealed in a closed cavity through the insulating outer cylinder, the annular end cover, the sealing ring, the inner ring, and the insulating sealing pad;
[0014] The copper electrode tube is arranged at the central axis of the insulating outer tube through an insulating bracket; an electrode connector is arranged on the annular end cover at the upper end of the insulating outer tube; the copper electrode tube and the electrode connector are respectively connected to the corresponding positive electrode and negative electrode;
[0015] When powered on, the electrode connector can be electrically connected to the outer ring, ball bearing and inner ring through the corresponding conductive silicone pad;
[0016] When the entire tooling is assembled, when there is conductive liquid in the cavity between the copper electrode tube and the inner ring, the inner walls of the inner rings of multiple bearings can be evenly copper plated.
[0017] In the second aspect, an auxiliary tooling for copper plating of the inner ring of a thrust bearing is based on the structure of the first aspect: a rubber sealing plug is provided at the lower end of the insulating outer cylinder, so that a cavity capable of containing liquid is formed between the inner ring and the copper electrode tube; after the conductive liquid is poured into the cavity and energized, the copper plating is directly completed.
[0018] Based on the first aspect or the second aspect, as a preferred technical solution of the present application, the lower end of the insulating outer cylinder is also provided with a corresponding annular end cover, and the upper annular surface of the annular end cover is a step surface.
[0019] Based on the first aspect or the second aspect, as the preferred technical solution of the present application, the insulating outer cylinder is adapted to the outer ring of the bearing, and the spacing between the outer cylindrical surface of the copper electrode tube and various parts of the inner ring of each bearing is consistent, forming a structure to ensure that the copper plating layer of the inner ring is uniform.
[0020] Based on the first aspect or the second aspect, as a preferred technical solution of the present application, a plurality of through holes are opened on the tube wall of the copper electrode tube, and the upper end of the copper electrode tube has a conical tube cavity; conductive liquid is added through the conical closing cavity, and the conductive liquid is allowed to flow through the through holes into the cavity between the inner ring and the outer cylindrical surface of the copper electrode tube.
[0021] Based on the first aspect or the second aspect, as a preferred technical solution of the present application, the power supply of the annular end cover is designed as follows:
[0022] The annular end cap is a conductive end cap, and the electrode connector is electrically connected to the outer ring, the ball, and the inner ring through the annular end cap and the corresponding conductive silicone pad;
[0023] Alternatively, the annular end cap is a non-conductive end cap; an annular conductive coating is provided at the end surface of the annular end cap, a wire is embedded in the annular end cap, and the wire electrically connects the electrode connector to the conductive coating; the annular conductive coating on the annular end cap is pressed onto the corresponding conductive silicone pad.
[0024] Based on the first aspect or the second aspect, as a preferred technical solution of the present application, the annular end cover includes a short section barrel, the outer end of the short section barrel has an outward-turned horizontal flange, and the inner end has an inward-turned horizontal flange. The short section barrel is adapted to the insulating outer barrel and a sealing ring is provided between the two. The outward-turned horizontal flange is fixed to the end face of the insulating outer barrel through a screw, and the inward-turned horizontal flange structure is pressed on the outer ring through a conductive silicone pad and pressed on the inner ring through an insulating sealing pad.
[0025] For ease of understanding, the core design points of this solution are explained:
[0026] 1. The working principle and working process of the first aspect above;
[0027] Principle and process: a. Install multiple bearings in an insulating outer cylinder, and block both ends with annular end covers. An insulating seal is provided between the inner rings of the bearings, and a conductive silicone pad is provided between the inner rings of the bearings. In addition, an insulating seal is provided between the inner ring and the annular end cover, and a conductive silicone pad is also provided between the outer ring and the annular end cover, and a sealing ring is provided between the annular end cover and the insulating outer cylinder; b. Therefore, for the bearing of the insulating outer cylinder, only the inner wall of the inner ring is exposed, and the rest of the bearing is sealed. Then, a copper electrode tube is placed in the center of the insulating outer cylinder, so that the copper electrode tube, A plating cavity is formed between the inner wall of the inner ring; c. When the entire assembled tooling is placed in the plating tank, the copper electrode tube and the electrode connector are connected to the positive and negative electrodes of the power supply respectively, so a negative electrode is formed on the annular inner wall of the inner ring of the bearing of the insulating outer cylinder, and the outer cylindrical surface of the copper electrode tube is used to form the negative electrode, and the outer cylindrical surface of the copper electrode tube is located at the center of the annular inner wall of the inner ring of the bearing, so that the inner wall of the inner ring can be well electroplated (when placed in the plating tank, the rest of the bearing, such as the outer ring, the ball, the outer ring edge of the inner ring, and the end face of the inner ring will not be copper plated, reducing the amount of copper used);
[0028] Effect: When maintaining the thrust bearing, there is no need to disassemble the inner ring, ball and outer ring of the entire bearing. You only need to install the bearings in the insulating outer cylinder after cleaning, and then put them in the electroplating tank after assembly. The maintenance is very simple and convenient.
[0029] 2. The working principle and working process of the second aspect above;
[0030] Principle and working process: Similarly, the same structure as the first aspect can be formed - only the inner wall of the inner ring of the bearing is allowed to leak; the difference is that the bottom of the insulating outer cylinder is blocked by a rubber sealing plug, so that a cavity capable of holding liquid is formed between the inner ring and the copper electrode tube; when working, the conductive liquid is poured into the cavity and the power is turned on, and the copper plating is directly completed;
[0031] Effect: When the inner wall of the inner ring of the thrust bearing is copper-plated for maintenance in the factory, after cleaning is completed and the entire auxiliary tooling is assembled (the bottom is blocked by a rubber sealing plug), there is no need to put it in a special electroplating tank. Just pour conductive liquid into the tooling and then turn on the power to complete the electroplating. This is very suitable for actual maintenance situations in the factory.
[0032] The present invention has the following advantages:
[0033] Reduce the copper plating maintenance time of the thrust bearing and improve the maintenance efficiency; and the operation is simple and convenient.
[0034] When the inner ring of a traditional thrust bearing is copper-plated for maintenance, the entire bearing is disassembled, and then the end face and outer ring surface of the inner ring are covered with tape, leaving only the inner ring surface of the inner ring exposed, and then copper-plated (the thickness of the copper plating directly affects the performance of the bearing, usually between 0.01mm-0.05mm); disassembly, copper plating, and reassembly take a lot of time;
[0035] In a copper plating method of this scheme, if only the inner ring of the bearing needs to be copper plated and no other maintenance work is required on the bearing: directly install multiple bearings in an insulating outer cylinder, and then place the entire device in an electroplating tank to complete the copper plating; since the bearing does not need to be disassembled and multiple bearings can be installed at one time, the copper plating maintenance efficiency is greatly improved, and the entire copper plating process is very simple and convenient, which is very suitable for the actual copper plating maintenance work of bearings in factories;
[0036] In another copper plating method of this scheme, if only the inner ring of the bearing needs to be copper plated for maintenance and no other maintenance work is required on the bearing: directly install multiple bearings in the insulating outer cylinder, then plug the bottom of the tooling with a rubber sealing plug, and then pour the conductive liquid into the tooling (into the cavity formed between the inner ring and the copper electrode tube). There is no need to put the bearing into the electroplating pool, and the electroplating maintenance work can be completed directly on the floor of the factory, which is also very simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0037] Figure 1 It is a structural schematic diagram of a first embodiment of the present invention;
[0038] Figure 2 It is a cross-sectional view of the first embodiment of the present invention (part of the conductive sealing gasket is not shown);
[0039] Figure 3 It is a schematic diagram of the structure of the annular end cover structure displacement block including a horizontal part B and a vertical part B;
[0040] Figure 4 It is a structural schematic diagram of the present invention;
[0041] Figure 5 It is a structural schematic diagram of the present invention;
[0042] In the figure: 10-insulating outer cylinder, 20-annular end cover, 30-copper electrode tube, 301-through hole;
[0043] 1-insulating sealing pad, 2-conductive sealing pad, 3-insulating bracket, 4-electrode connector, 5-sealing ring. DETAILED DESCRIPTION
[0044] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.
[0045] It should be noted that the directions or positional relationships indicated by "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use, or are the directions or positional relationships commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0046] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.
[0047] What is needed is that in some special equipment, thrust bearings with copper-plated inner ring walls are used (such bearings include outer rings, balls, inner rings, and copper-plated inner ring walls of the inner rings). Such thrust bearings have greater load-bearing capacity and better impact resistance. When maintaining these equipment, it is also necessary to check whether the copper-plated layer of the inner ring of the thrust bearing is worn and whether maintenance and repair are required (generally, it is not necessary to disassemble the entire bearing, balls, and inner rings. It is only necessary to re-polish and copper-plated the inner wall of the inner ring after simple cleaning; of course, it does not mean that the bearings do not need to be completely disassembled during maintenance. The present invention is only aimed at the situation where the bearings do not need to be disassembled for dust removal).
[0048] However, when the inner wall of the inner ring is polished and copper-plated, the bearing must be completely disassembled first, and then the end face of the inner ring and the outer ring are covered with tape, and then the inner ring is placed in the electroplating tank for copper plating. This will cause the maintenance of the entire bearing to take a long time, and the operation is very inconvenient, and the tape is easy to lose its viscosity in a high-temperature liquid environment, causing the copper layer to penetrate into the end face and outer ring surface of the inner ring.
[0049] Based on the above situation, the present invention provides an auxiliary tooling for copper plating of the inner ring of a thrust bearing, which makes the copper plating operation very convenient, saves copper plating time, and improves copper plating efficiency.
[0050] First, see Figure 1 to Figure 5 , a specific embodiment of the present invention provides an auxiliary tooling for copper plating of the inner ring of a thrust bearing, comprising an insulating outer cylinder 10, an annular end cover 20, and a copper electrode tube 30;
[0051] The lower inner wall of the insulating outer cylinder 10 has a stepped surface, a plurality of bearings are placed in the insulating outer cylinder 10, and the corresponding bearings are pressed onto the stepped surface by using an annular end cover 20; and, between adjacent bearings, an annular insulating sealing gasket 1 is provided between the inner rings, and an annular conductive silicone pad 2 is provided between the outer rings; in addition, a corresponding annular insulating sealing gasket 1 is also provided between the inner ring of the bearing, the corresponding annular end cover 20 and the pressing surface of the stepped surface, and a corresponding annular conductive silicone pad 2 is also provided between the outer ring of the bearing, the annular end cover 20 and the pressing surface of the stepped surface;
[0052] In addition, the insulating outer cylinder 10 and the annular end cover 20 are also provided with a sealing ring 5, and the balls and the outer ring can be sealed in a closed cavity through the insulating outer cylinder 10, the annular end cover 20, the sealing ring 5, the inner ring, and the insulating sealing gasket 1;
[0053] The copper electrode tube 30 is arranged at the central axis of the insulating outer tube 10 through the insulating bracket 3; the electrode connector 4 is arranged on the annular end cover 20 at the upper end of the insulating outer tube 30; the copper electrode tube 30 and the electrode connector 4 are respectively connected to the corresponding positive electrode and negative electrode;
[0054] When power is turned on, the electrode connector 4 makes the inner wall surface of the inner ring the negative electrode surface through the corresponding conductive silicone pad 2 and the outer ring and the ball, and makes the outer cylindrical surface of the copper electrode tube 30 the positive electrode surface, and the distance from the positive electrode surface to the negative electrode surface in the circumferential direction is consistent; therefore, when the entire tooling is assembled, when there is conductive liquid in the cavity between the copper electrode tube 30 and the inner ring, the inner walls of the inner rings of multiple bearings can be evenly copper-plated.
[0055] It should be noted that, in the above-mentioned copper electroplating method, since the entire bearing does not need to be disassembled and multiple bearings can be installed in the outer tube 10 at one time, the copper plating operation is simple and the copper plating efficiency is very high.
[0056] In some advantageous embodiments, there may be a variety of design methods for providing a step surface on the inner wall of the lower end of the insulating outer cylinder 10: for example, a corresponding annular end cover 20 is also provided at the lower end of the insulating outer cylinder 10, and the upper annular surface of the annular end cover 20 is the step surface; for another example, an integral step (which may be formed by turning) may be directly provided on the inner wall of the lower end of the insulating outer cylinder 10.
[0057] In some advantageous embodiments, the structure of the annular end cap 20 is preferably designed.
[0058] Specifically, see Figure 3 to Figure 5The annular end cap 20 includes a short section barrel, the outer end of the short section barrel has an outward-turned horizontal flange, and the inner end has an inward-turned horizontal flange. The short section barrel is matched with the insulating outer barrel 10 and a sealing ring 5 is arranged between the two. The outward-turned horizontal flange is fixed to the end surface of the insulating outer barrel 10 through a screw, and the inward-turned horizontal flange structure is pressed on the outer ring through the conductive silicone pad 2 and on the inner ring through the insulating sealing pad 1. In this way, the coaxiality of the annular end cap 20 and the insulating outer barrel 10 can be ensured.
[0059] Furthermore, the design of the power supply in the annular end cap 20 is further described. There are many ways of power supply design, for example, the annular end cap 20 is a conductive end cap, and the electrode connector 4 is electrically connected to the outer ring, the ball, and the inner ring through the annular end cap 20 and the corresponding conductive silicone pad 2; for another example, the annular end cap 20 is a non-conductive end cap; an annular conductive coating is provided at the end surface of the annular end cap 20, and a wire is embedded in the annular end cap 20, and the wire electrically connects the electrode connector to the conductive coating; the annular conductive coating on the annular end cap 20 is pressed on the corresponding conductive silicone pad 2.
[0060] In some advantageous embodiments, the insulating support 3 and the annular end cover 20 are designed based on the specific structure of the annular end cover 20. A step is provided on the inner wall of the short section of the annular end cover 20, and the insulating support 3 is in the shape of a crossbeam strip, and both ends of the insulating support 3 are on the step and are screwed. A central hole is provided on the insulating support 3, and a copper electrode tube 30 is placed on the central hole.
[0061] In some advantageous embodiments, the copper electrode tube 30 is further described. The copper electrode tube 30 is in the shape of a tube, with a large end at the upper end and a tube at the lower end. A conical tube cavity is opened on the large end, and a plurality of through holes 301 are opened on the tube. When a conductive liquid needs to be added between the copper electrode tube 30 and the inner ring, the conductive liquid is added through the conical closing cavity, and the conductive liquid is allowed to flow through the through holes 301 into the cavity between the inner ring and the outer cylindrical surface of the copper electrode tube 30, which can ensure that each position of the inner ring can be uniformly electroplated (adding the plating liquid by other means, such as directly pouring the conductive liquid into the cavity of the inner ring and the copper electrode tube, and the inner ring where the conductive liquid is first in and out may have a slightly thicker copper plating, but this liquid adding method in the present solution allows the circumferential inner ring to contact the conductive liquid at the same time, thereby achieving uniform copper plating).
[0062] In a second aspect, based on the structure of the first aspect, a specific embodiment of the present invention further discloses an auxiliary tooling for copper plating of the inner ring of a thrust bearing.
[0063] Specifically, a rubber sealing plug is provided at the lower end of the insulating outer cylinder, so that a cavity that can hold liquid is formed between the inner ring and the copper electrode tube; the conductive liquid is poured into the cavity and the copper plating is directly completed after the power is turned on. When the bearing is actually maintained in the factory, it is cleaned and assembled and directly placed on the ground, and then the conductive liquid is poured and the copper plating is then turned on, which is very suitable for the actual maintenance environment of the factory.
[0064] The above embodiments only express preferred implementation modes, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.
Claims
1. Auxiliary tooling for copper plating of the inner ring of a thrust bearing, the thrust bearing is formed by an outer ring, a ball, and an inner ring, and the three can contact and conduct electricity, and the characteristics are: It comprises an insulating outer cylinder (10), an annular end cover (20), and a copper electrode tube (30); The lower inner wall of the insulating outer cylinder (10) is provided with a stepped surface, a plurality of bearings are placed in the insulating outer cylinder (10), and the corresponding bearings are pressed onto the stepped surface by using an annular end cover (20); Between adjacent bearings, an annular insulating sealing gasket (1) is provided between the inner rings, and an annular conductive silicone gasket (2) is provided between the outer rings; a corresponding annular insulating sealing gasket (1) is also provided between the inner ring of the bearing, the corresponding annular end cover (20) and the pressed surface of the step surface; and a corresponding annular conductive silicone gasket (2) is also provided between the outer ring of the bearing, the annular end cover (20) and the pressed surface of the step surface; The insulating outer cylinder (10) and the annular end cover (20) are also provided with a sealing ring (5), and the balls and the outer ring can be sealed in a closed cavity through the insulating outer cylinder (10), the annular end cover (20), the sealing ring (5), the inner ring, and the insulating sealing gasket (1); The copper electrode tube (30) is arranged at the central axis of the insulating outer tube (10) through an insulating bracket (3); an electrode connector (4) is arranged on the annular end cover (20) at the upper end of the insulating outer tube (30); the copper electrode tube (30) and the electrode connector (4) are respectively connected to the corresponding positive electrode and negative electrode; When power is supplied, the electrode connector (4) can be electrically connected to the outer ring, the ball bearing, and the inner ring via the corresponding conductive silicone pad (2); When the entire tooling is assembled, when there is conductive liquid in the cavity between the copper electrode tube (30) and the inner ring, the inner walls of the inner rings of multiple bearings can be evenly copper plated.
2. An auxiliary tooling for copper plating of the inner ring of a thrust bearing adopts the structure of the auxiliary tooling as claimed in claim 1, characterized in that: A rubber sealing plug is provided at the lower end of the insulating outer cylinder (10), so that a cavity capable of containing liquid is formed between the inner ring and the copper electrode tube (30); after the conductive liquid is poured into the cavity and energized, copper plating is directly completed.
3. The auxiliary tooling for copper plating of the inner ring of a thrust bearing according to claim 1 or 2, characterized in that: The lower end of the insulating outer cylinder (10) is also provided with a corresponding annular end cover (20), and the upper annular surface of the annular end cover (20) is a stepped surface.
4. The auxiliary tooling for copper plating of the inner ring of a thrust bearing according to claim 1 or 2, characterized in that: The insulating outer cylinder (10) is matched with the outer ring of the bearing, and the distances between the outer cylindrical surface of the copper electrode tube (30) and various parts of the inner ring of each bearing are consistent, forming a structure that ensures that the copper plating layer of the inner ring is uniform.
5. The auxiliary tooling for copper plating of the inner ring of a thrust bearing according to claim 1 or 2, characterized in that: The copper electrode tube (30) has a plurality of through holes (301) formed on its wall, and the upper end of the copper electrode tube (30) has a conical tube cavity; Conductive liquid is added through the conical closing cavity, and the conductive liquid is allowed to flow through the through hole (301) into the cavity between the inner ring and the outer cylindrical surface of the copper electrode tube (30).
6. The auxiliary tooling for copper plating of the inner ring of a thrust bearing according to claim 1 or 2, characterized in that: The annular end cover (20) is a conductive end cover, and the electrode connector (4) is electrically connected to the outer ring, the ball, and the inner ring via the annular end cover (20) and the corresponding conductive silicone pad (2).
7. The auxiliary tooling for copper plating of the inner ring of a thrust bearing according to claim 1 or 2, characterized in that: The annular end cap (20) is a non-conductive end cap; an annular conductive coating is provided at the end surface of the annular end cap (20); a wire is embedded in the annular end cap (20), and the wire electrically connects the electrode connector to the conductive coating; The annular conductive coating on the annular end cover (20) is pressed onto the corresponding conductive silicone pad (2).
8. The auxiliary tooling for copper plating of the inner ring of a thrust bearing according to claim 3 is characterized in that: The annular end cover (20) comprises a short section barrel, the outer end of the short section barrel has a horizontal flange turned outward, and the inner end of the short section barrel has a horizontal flange turned inward; The short section cylinder is matched with the insulating outer cylinder (10) and a sealing ring (5) is arranged between the two. The outward-turned horizontal flange is fixed to the end surface of the insulating outer cylinder (10) via a screw rod, and the inward-turned horizontal flange structure is pressed onto the outer ring via a conductive silicone pad (2) and onto the inner ring via an insulating sealing pad (1).