Tapered bearing outer raceway phosphating prevention device and method of use thereof

Abstract

The present application relates to a kind of phosphating device and method of preventing conical bearing outer ring raceway, comprising: workbench, the central region of the workbench is provided with V-shaped groove, V-shaped groove middle part forms V-shaped mesa, for supporting bearing outer ring;Drive mechanism is installed in the workbench mesa at the both ends of V-shaped groove respectively by protection device;Two drive mechanisms are oppositely arranged and located at the both ends of bearing outer ring, for cooperating with pressing mechanism and pushing pressing mechanism to the edge of bearing outer ring raceway;The device is manually by pressing mechanism on the push plate of drive mechanism, utilizes drive mechanism to drive pressing mechanism and bearing outer ring raceway edge cooperation, form closed cavity, realize bearing outer ring when phosphating can make other parts of outer ring phosphating, while raceway part is not phosphated;The device is semi-automatic design, only need to be manually by pressing mechanism on push plate, subsequent series of actions can be completed by this device;It is simple to operate, low in cost, reusable, suitable for batch scale production.

Description

Technical Field

[0001] This invention relates to auxiliary equipment for preventing phosphating of bearings, specifically to a device and method for preventing phosphating of the outer raceway of a tapered bearing, belonging to the field of bearing processing. Background Technology

[0002] There are currently three main methods for phosphating the outer ring of bearings. One method is to phosphate the entire outer ring, including the raceway and outer diameter. Another method is for some high-precision bearings where the raceway cannot be phosphated. Many mainstream manufacturers use a method of first phosphating the entire outer ring and then grinding away the phosphating layer on the raceway surface. This method significantly increases manufacturing risk and cost and is prone to damaging the raceway curve. The third method uses a tooling with upper and lower pressure caps. The outer diameter of the pressure caps is covered with high-temperature and acid-resistant sealing rubber. The upper and lower pressure caps are pressed against the outermost edge of the raceway of the outer ring, creating a sealed cavity inside the outer ring. At the same time, an air vent is used to maintain the internal and external air pressure balance, and the upper and lower pressure caps are fixed with bolts. This method solves the risk of secondary grinding damaging the raceway curve and reduces production costs to some extent. However, this method has low production efficiency, and because the installation and disassembly of this tooling requires repeated manual alignment of the upper and lower pressure caps, connection and tightening of bolts, and the manual emptying of residual liquid in the air vent during disassembly, it is not suitable for large-scale continuous production. Summary of the Invention

[0003] In view of the technical defects of the various existing bearing phosphating methods, the purpose of this invention is to provide a phosphating prevention device for the outer raceway of a tapered bearing. The device is semi-automatic and uses a drive mechanism to drive a clamping mechanism to cooperate with the edge of the bearing outer raceway, thereby forming a sealed inner cavity inside the outer raceway and preventing phosphating liquid from seeping into the inner raceway surface during phosphating.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: a phosphate-resistant device for the outer raceway of a tapered roller bearing, comprising: a worktable, wherein a V-groove is formed in the central area of ​​the worktable, and a V-shaped platform is formed in the middle of the V-groove for supporting the outer raceway of the bearing; a drive mechanism is installed on the worktable surface at both ends of the V-groove through a protective device; the two drive mechanisms are arranged opposite to each other and located at both ends of the outer raceway of the bearing, for cooperating with the clamping mechanism and pushing the clamping mechanism to the edge of the outer raceway of the bearing; Furthermore, the drive mechanism includes a motor, a lead screw, a push plate, and a magnetic attraction mechanism; the protective device adopts a protective box design, the protective box has an axial through hole for the lead screw to pass through, the lead screw passes through the protective box, and the end of the lead screw is connected to the motor located outside the protective box, the front end of the lead screw is connected to the push plate, and the push plate is equipped with a magnetic attraction mechanism. Furthermore, the push plate includes a circular disc-shaped body and a connecting part, and the front end of the lead screw is connected to the connecting part. Furthermore, the magnetic attraction mechanism is an electromagnetic connector, which is located outside the connection part.

[0005] Furthermore, the circular disc-shaped body of the push plate has a circular groove in the middle of the end face of the disc-shaped body near the pressing mechanism, and the bottom surface of the circular groove is perpendicular to the lead screw.

[0006] Furthermore, the clamping mechanism includes: two combined pressure caps and a self-locking mechanism unit; the two pressure caps are arranged opposite each other and form a telescopic design, and the self-locking mechanism unit includes two identical self-locking components, which are symmetrically arranged on the same pressure cap, and the other pressure cap is provided with a locking port that cooperates with the self-locking components. The self-locking components cooperate with the locking port to achieve locking between the two pressure caps. Furthermore, both pressure caps include a pressure cap body and integrally formed extension tubes on both sides thereon; wherein, the two pressure caps are a first pressure cap and a second pressure cap, the first pressure cap having a first pressure cap body, an inner extension tube, and an outer extension tube; the second pressure cap having a second pressure cap body, an inner extension tube, and an outer extension tube. Furthermore, the outer extension tube of the first cover and the outer extension tube of the second cover have the same diameter, and the inner extension tube of the second cover has a larger diameter than the inner extension tube of the first cover and they are compatible, so that the inner extension tube of the second cover can be fitted onto the inner extension tube of the first cover. Based on the above-mentioned clamping mechanism, the outer diameters of the two pressure cap bodies respectively form a sealed cavity with the edge of the bearing outer ring raceway; Furthermore, the outer diameter of each gland body and the edge of the bearing outer ring raceway are sealed by the first sealing element; Furthermore, the first seal is divided into a coarse end and a fine end, with the coarse end located close to the outer ring oil groove direction and the fine end facing the center of the raceway. Furthermore, the thicker end of the first seal is larger than the outer diameter of the bearing outer ring raceway, and the thinner end is smaller than the outer diameter of the bearing outer ring raceway. Furthermore, a circular hole is opened in the middle part of each gland body, and an annular groove is opened along the inner diameter of the circular hole, and a second sealing element is embedded in the annular groove; Furthermore, each self-locking component includes a locking rod, a torsion arm, a lock head, a screw, and a spring; one end of the locking rod is connected to the torsion arm by a bolt, and the front end of the locking rod is connected to the lock head; the front end of the lock head is a front hook, and a screw is provided on the inside of the front hook; a groove is opened at the position of the locking rod corresponding to the screw; a spring is sleeved on the screw; and the screw passes through the groove of the front hook and the locking rod. Furthermore, the second pressure cap body has a through hole for the torsion arm to pass through; and an annular groove for the front hook of the lock head to fall into is provided along the outer diameter of the extension tube inside the first pressure cap.

[0007] Furthermore, the inner diameter of the circular groove of the push plate is slightly larger than the outer diameter of the outer extension tube of the cap, so that the cap can fit perfectly into the push plate.

[0008] Instructions for using the anti-phosphating device on the outer raceway of the tapered bearing in this solution: Before phosphating, the outer ring of the bearing is placed in a fixed position on the V-shaped platform. The position of the V-shaped platform is adjusted to ensure that the axis of the outer ring coincides with the axis of the push rod. Power is applied, and then the end faces of the outer extension tubes of the first and second pressure caps are respectively placed close to the inner walls of the circular grooves of the two push plates. The inner diameter of the circular grooves on the push plates is slightly larger than the outer diameter of the outer extension tubes of the pressure caps. The magnetic attraction mechanism on the push plates tightly attracts the end faces of the pressure caps to the inner walls of the circular grooves of the push plates. Then, the two motors of the two drive mechanisms drive the lead screws, which drive the two push plates to push the two pressure caps to the designated positions, so that the first sealing element of the outer diameter of the two pressure caps is fully engaged with the edge of the outer ring raceway. At this time, the inner sides of the two pressure caps are automatically locked, and the two pressure caps are fixed and cannot move outward. The magnetic attraction mechanism is de-energized, and the two lead screws drive the two push plates to return to the starting position. During the phosphating heating process, the air inside the bearing outer ring expands, and the expanded air squeezes the sealing rubber (second seal) in the middle of the two pressure caps. This sealing rubber not only reduces pressure but also prevents the phosphating liquid from seeping into the bearing outer ring cavity. After phosphating is completed, the self-locking mechanism is turned, the self-locking mechanism in the bearing outer ring cavity is unlocked, and the two pressure caps are removed.

[0009] The beneficial effects of this invention are: This device allows the clamping mechanism to be manually pressed against the push plate of the drive mechanism. The drive mechanism then drives the clamping mechanism to engage with the edge of the bearing outer ring raceway, forming a sealed inner cavity. This ensures that when the bearing outer ring is phosphated, other parts of the outer ring are phosphated while the raceway remains unphosphated. The device is equipped with a V-shaped platform. By adjusting the position of the V-groove, the outer ring axis is ensured to coincide with the push rod axis of the device, thus ensuring accurate positioning between the drive mechanism and the clamping mechanism and ensuring the accuracy of the drive mechanism's push on the clamping mechanism. In the drive mechanism, the motor drives the lead screw to move, which in turn drives the push plate to reciprocate. At the same time, the drive mechanism is equipped with a magnetic attraction mechanism, which attracts the clamping mechanism to the push plate and automatically pushes the clamping mechanism to the edge of the outer raceway for complete engagement, thus achieving automation. The clamping mechanism adopts a minimalist structure with rubber seals and rubber balancing of internal and external pressures, which not only avoids the pressure risks caused by the pressure difference between the inside and outside, but also avoids the risk of phosphating solution seeping into the outer raceway. Meanwhile, the adoption of a self-locking mechanism eliminates the need for manual installation and disassembly, significantly improving production efficiency; This device adopts a semi-automatic design. It only requires manual placement of the clamping mechanism against the push plate, and all subsequent actions can be completed by this device. It is simple to operate, low in cost, reusable, and suitable for mass production. Attached Figure Description

[0010] Figure 1 This is an overall assembly structure diagram of the anti-phosphating device for the outer ring raceway of the tapered bearing of the present invention.

[0011] Figure 2 for Figure 1 A cross-sectional view.

[0012] Figure 3 This is a cross-sectional view of the anti-phosphating device for the outer raceway of the tapered bearing of the present invention (the outer raceway of the bearing is omitted).

[0013] Figure 4 for Figure 2 Enlarged view of point I.

[0014] Figure 5 for Figure 4 Enlarged view of section II.

[0015] Figure 6 This is a state diagram of the self-locking component of the clamping mechanism of the present invention during its movement (unlocked state).

[0016] Figure 7 This is a diagram showing the unlocked state of the self-locking component of the clamping mechanism of the present invention (partial view of the device).

[0017] In the diagram, 1. Workbench, 2. V-groove, 3. V-shaped table surface, 4. Bearing outer ring, 5. Protective box, 6. Motor, 7. Lead screw, 8. Push plate, 8.1. Circular disc-shaped body, 8.2. Connecting part, 8.1.1. Circular groove, 9. Electromagnetic connector, 10. First pressure cover body, 10.1. Inner extension tube of the first pressure cover, 10.2. Outer extension tube of the first pressure cover, 11. Second pressure cover body, 11.1 11.2 Second gland inner extension tube, 4.1 Second gland outer extension tube, 12.1 Bearing outer ring raceway, 13. First seal, 14.2 Coarse end, 15.2 Fine end, 16.3 Outer ring oil groove, 17. Circular hole, 18. Second seal, 19. Locking rod, 10. Torsion arm, 11.1 Lock head, 12.2 Front hook, 12. Screw, 13. Spring, 14. Locking hole, 15. V-shaped table drive motor. Detailed Implementation

[0018] To make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] like Figure 1-7The diagram illustrates the structure of an anti-phosphating device for the outer raceway of a tapered roller bearing. This structure includes: a worktable 1, with a V-groove 2 in its central region and a V-shaped platform 3 formed in the middle of the V-groove 2 to support the outer raceway 4; a drive mechanism is mounted on the worktable 1 at each end of the V-groove 2 via a protective device; the two drive mechanisms are positioned opposite each other at both ends of the outer raceway 4 and are used to cooperate with a clamping mechanism to push the clamping mechanism to the edge of the outer raceway 4.1. In this embodiment, the protective device is set as a protective box 5, which is located at the edge position near both ends of the workbench 1 and is used to support the drive mechanism. The drive mechanism includes: a motor 6, a lead screw 7, a push plate 8, and a magnetic attraction mechanism; the protective box 5 has an axial through hole for the lead screw 7 to pass through, the lead screw 7 passes through the protective box 5, and the end of the lead screw 7 is connected to the motor 6 located outside the protective box 5, the front end of the lead screw 7 is connected to the push plate 8, and the push plate 8 is equipped with a magnetic attraction mechanism. Based on the above scheme, the lead screw 7 forms the push rod of the device. Before the device is in operation, the outer ring 4 of the bearing is placed on the V-shaped table 3 to ensure that the axis of the outer ring 4 of the bearing coincides with the axis of the push rod. The push plate 8 includes a circular disc-shaped body 8.1 and a connecting part 8.2, and the front end of the lead screw 7 is connected to the connecting part 8.2. The magnetic attraction mechanism is an electromagnetic connector 9, which is located outside the connecting part 8.2.

[0020] The circular disc-shaped body 8.1 of the push plate 8 is located near one end of the pressing mechanism. A circular groove 8.1.1 is provided in the middle of the end face of the circular disc-shaped body 8.1 near the pressing mechanism. The bottom surface of the circular groove 8.1.1 is perpendicular to the lead screw 7.

[0021] The clamping mechanism includes: two combined pressure caps and a self-locking mechanism unit; the two pressure caps are arranged opposite each other and form a telescopic design, and the self-locking mechanism unit includes two identical self-locking components, which are symmetrically arranged on the same pressure cap. The other pressure cap is provided with a locking port 20 that cooperates with the self-locking components. The self-locking components cooperate with the locking port 20 to achieve locking between the two pressure caps. Furthermore, both pressure caps include a pressure cap body and integrally formed extension tubes on both sides thereof; wherein, the two pressure caps are a first pressure cap and a second pressure cap, the first pressure cap having a first pressure cap body 10, an inner extension tube 10.1, and an outer extension tube 10.2; the second pressure cap having a second pressure cap body 11, an inner extension tube 11.1, and an outer extension tube 11.2; The outer extension tube 10.2 of the first cover and the outer extension tube 11.2 of the second cover have the same diameter. The inner extension tube 11.1 of the second cover has a larger diameter than the inner extension tube 10.1 of the first cover and they are compatible, so that the inner extension tube 11.1 of the second cover can be fitted onto the inner extension tube 10.1 of the first cover. Two self-locking components are provided on the second cover.

[0022] Based on the above-mentioned clamping mechanism, the outer diameters of the two pressure cap bodies respectively form a sealed cavity with the edge of the bearing outer ring raceway 4.1; The outer diameter of each gland body is designed to be a tapered shape similar to the shape of the outer raceway 4.1; The outer diameter of each gland body and the edge of the bearing outer ring raceway 4.1 are sealed by the first sealing element 12; The first seal 12 is divided into a coarse end 12.1 and a fine end 12.2. The coarse end 12.1 is located close to the outer ring oil groove 4.3, and the fine end 12.2 faces the center of the raceway 4.1. The coarse end 12.1 of the first seal 12 is larger than the outer diameter of the bearing outer ring raceway 4.1, and the fine end 12.2 is smaller than the outer diameter of the bearing outer ring raceway 4.1; The first sealing element 12 is a high-temperature and acid-corrosion resistant sealing rubber with a thickness of about 10 mm, which is fitted on the position where the outer diameter of the gland body contacts the outer ring raceway 4.1; A circular hole 13 is opened in the middle part of each gland body, and an annular groove is opened along the inner diameter of the circular hole 13. A second sealing element 14 is embedded in the annular groove. The second sealing element 14 is a circular sheet structure, made of acid-resistant, high-temperature-resistant, and highly elastic sealing rubber; Each self-locking assembly includes a locking rod 15, a torsion arm 16, a lock head 17, a screw 18, and a spring 19; one end of the locking rod 15 is connected to the torsion arm 16 by a bolt, and the front end of the locking rod 15 is connected to the lock head 17; the front end of the lock head 17 is a front hook 17.1, and a screw 18 is provided on the inside of the front hook 17.1; a slanted groove is opened at the position corresponding to the screw 18 on the locking rod 15; a spring 19 is sleeved on the screw 18; and the screw 18 passes through the slanted groove of the front hook 17.1 and the locking rod 15. The second pressure cap body 11 has a through hole for the torsion arm 16 to pass through; an annular groove lock opening 20 is provided along the outer diameter of the inner extension tube 10.1 of the first pressure cap for the front hook 17.1 of the lock head 17 to fall into.

[0023] The working principle of the clamping mechanism in this solution is as follows: As the first and second pressure caps move towards the center from both sides, the front hook 17.1 of the lock head 17 is pressed inward during the movement of the self-locking assembly. The inner spring 19 of the front hook 17.1 is compressed, and at this time, the outer diameter of the two pressure cap bodies is separated from the outer ring raceway 4.1. When the two pressure caps move to the point where they just fit with the outer side of the outer ring raceway 4.1, the front hook 17.1 of the lock head 17 moves to the lock opening 20 and is subjected to the tension of the inner spring 19, causing the front hook 17.1 to spring back to its limit position. At this time, the outer diameter of the pressure cap is fully engaged with the outer edge of the outer ring raceway 4.1, and the front hook 17.1 of the lock head 17 falls into the lock opening 20 and presses against the lock opening 20. The self-locking assembly is in the locked state.

[0024] The inner diameter of the circular groove 8.1.1 of the push plate 8 is slightly larger than the outer diameter of the outer extension tube of the gland, so that the gland can fit perfectly in the push plate 8.

[0025] Based on this solution, before continuous production, it is only necessary to place the outer ring 4 of the bearing on the designated position of the V-groove 2 of the device, adjust the axis of the outer ring 4 of the bearing to be basically coincident with the axis of the push rod of the device, and the clamping mechanism pushes the outer ring raceway 4.1 of the bearing through the drive mechanism, so that the two pressure caps of the clamping mechanism are respectively adsorbed on the corresponding push plates 8. Press the device switch, and the device will automatically push the two pressure caps to the position where they are fully engaged with the edge of the outer ring raceway 4.1.

[0026] The function of the V-shaped platform 3 of the drive mechanism in this scheme is that when the two pressure caps are pushed to the designated position and the push plates 8 on both sides are retracted to the initial position, the V-shaped platform 3 will push the outer ring 4 of the bearing along with the entire pressing mechanism to a certain height to cooperate with the next process.

[0027] Instructions for using the anti-phosphating device on the outer raceway of the tapered bearing in this solution: Before phosphating, the outer ring 4 of the bearing is placed in the fixed position on the V-shaped platform 3. The position of the V-shaped platform 3 is adjusted to ensure that the axis of the outer ring 4 coincides with the axis of the push rod. Power is turned on, and then the end faces of the outer extension tubes 10.2 and 11.2 of the first and second pressure caps are respectively attached to the inner walls of the circular grooves 8.1.1 of the two push plates 8. The inner diameter of the circular grooves 8.1.1 on the push plate 8 is slightly larger than the outer diameter of the outer extension tubes of the pressure caps. The magnetic attraction mechanism on the push plate 8 tightly attaches the end faces of the pressure caps to the inner walls of the circular grooves 8.1.1 of the push plate 8. Then, the two motors 6 of the two drive mechanisms drive the lead screws 7 respectively. The lead screws 7 drive the two push plates 8 to push the two pressure caps to the designated positions, so that the first sealing element 12 of the outer diameter of the two pressure caps is fully engaged with the edge of the outer ring raceway 4.1. At this time, the inner sides of the two pressure caps are automatically locked, and the two pressure caps are fixed and cannot move outward. The magnetic attraction mechanism is de-energized, and the two lead screws 7 drive the two push plates 8 to return to the starting position. During the above process, when the phosphating heating is performed, the air inside the bearing outer ring 4 expands. The expanded air will squeeze the sealing rubber (second seal 14) in the middle of the two pressure caps. The sealing rubber not only reduces pressure but also prevents the phosphating liquid from entering the inner cavity of the bearing outer ring 4. After the phosphating is completed, the self-locking mechanism torsion arm 16 is twisted, the self-locking mechanism in the inner cavity of the bearing outer ring 4 is unlocked, and the two pressure caps are removed.

[0028] It should be noted that adjusting the position of the V-shaped platform is to adjust the vertical change of the outer ring, so that the position of the outer ring axis is parallel to the push rod axis in the horizontal direction and on the same plane; a V-shaped platform drive motor 21 is installed on one side wall of the worktable 1, and the V-shaped platform 3 is moved up and down in the vertical direction by the V-shaped platform drive motor 21, so that the V-shaped platform 3 is raised or lowered.

[0029] It should be noted that the parts of this invention not described in detail are prior art.

[0030] The above examples are merely preferred embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and many variations are possible. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A device for preventing phosphating of the outer ring raceway of a tapered roller bearing, characterized in that, include: The workbench has a V-shaped groove in its central area, forming a V-shaped platform in the middle of the groove to support the outer ring of the bearing. A drive mechanism is installed on the workbench surface at both ends of the V-shaped groove through a protective device. The two drive mechanisms are arranged opposite each other and located at both ends of the outer ring of the bearing, and are used to cooperate with the clamping mechanism to push the clamping mechanism to the edge of the raceway of the outer ring of the bearing.

2. The anti-phosphating device for the outer ring raceway of a tapered bearing according to claim 1, characterized in that: The drive mechanism includes a motor, a lead screw, a push plate, and a magnetic attraction mechanism. The protective device adopts a protective box design. The protective box has an axial through hole for the lead screw to pass through. The lead screw passes through the protective box, and the end of the lead screw is connected to the motor located outside the protective box. The front end of the lead screw is connected to the push plate, and the push plate is equipped with a magnetic attraction mechanism.

3. The anti-phosphating device for the outer ring raceway of a tapered bearing according to claim 2, characterized in that: The push plate includes a circular disc-shaped body and a connecting part, and the front end of the lead screw is connected to the connecting part; the magnetic attraction mechanism is an electromagnetic connector, which is located outside the connecting part.

4. The anti-phosphating device for the outer ring raceway of a tapered bearing according to claim 3, characterized in that: The circular disc-shaped body of the push plate has a circular groove in the middle of the end face of the disc-shaped body near the pressing mechanism, and the bottom surface of the circular groove is perpendicular to the lead screw.

5. The anti-phosphating device for the outer ring raceway of a tapered bearing according to claim 4, characterized in that: The clamping mechanism includes: two combined pressure caps and a self-locking mechanism unit; the two pressure caps are arranged opposite each other and form a telescopic design, and the self-locking mechanism unit includes two identical self-locking components, which are symmetrically arranged on the same pressure cap, and the other pressure cap is provided with a locking port that cooperates with the self-locking components. The self-locking components cooperate with the locking port to achieve locking between the two pressure caps. Both pressure caps include a pressure cap body and integrally formed extension tubes on both sides thereon; wherein, the two pressure caps are a first pressure cap and a second pressure cap, the first pressure cap having a first pressure cap body, an inner extension tube, and an outer extension tube; the second pressure cap having a second pressure cap body, an inner extension tube, and an outer extension tube. The outer extension tube of the first cover and the outer extension tube of the second cover have the same diameter. The inner extension tube of the second cover has a larger diameter than the inner extension tube of the first cover and they are compatible, so that the inner extension tube of the second cover can be fitted onto the inner extension tube of the first cover. The outer diameters of the two gland bodies respectively fit with the edge of the bearing outer ring raceway to form a sealed cavity.

6. The anti-phosphating device for the outer ring raceway of a tapered bearing according to claim 5, characterized in that: The outer diameter of each gland body and the edge of the bearing outer ring raceway are sealed by the first sealing element; The first seal is divided into a coarse end and a fine end. The coarse end is located close to the outer ring oil groove, and the fine end faces the center of the raceway. The coarse end of the first seal is larger than the outer diameter of the bearing outer ring raceway, and the fine end is smaller than the outer diameter of the bearing outer ring raceway.

7. The anti-phosphating device for the outer ring raceway of a tapered bearing according to claim 5, characterized in that: Each gland body has a circular hole in the middle, and an annular groove is formed along the inner diameter of the circular hole. A second sealing element is embedded in the annular groove.

8. The anti-phosphating device for the outer ring raceway of a tapered bearing according to claim 5, characterized in that: Each self-locking assembly includes a locking rod, a torsion arm, a lock head, a screw, and a spring; one end of the locking rod is connected to the torsion arm by a bolt, and the front end of the locking rod is connected to the lock head; the front end of the lock head is a front hook, and a screw is provided on the inside of the front hook. A groove is opened at the position of the locking rod corresponding to the screw, and a spring is sleeved on the screw. The screw passes through the groove of the front hook and the locking rod.

9. The anti-phosphating device for the outer ring raceway of a tapered bearing according to claim 5, characterized in that: The inner diameter of the circular groove of the push plate is slightly larger than the outer diameter of the outer extension tube of the gland, so that the gland can fit perfectly into the push plate.

10. The method of using the anti-phosphating device for the outer ring raceway of a tapered bearing as described in any one of claims 1-9, characterized in that: Before phosphating, the outer ring of the bearing is placed in a fixed position on the V-shaped platform, and the position of the V-groove is adjusted to ensure that the axis of the outer ring coincides with the axis of the push rod. Power is turned on, and then the end faces of the outer extension tubes of the first and second pressure caps are respectively placed close to the inner walls of the circular grooves of the two push plates. The inner diameter of the circular grooves on the push plates is slightly larger than the outer diameter of the outer extension tubes of the pressure caps. The magnetic attraction mechanism on the push plates tightly attracts the end faces of the pressure caps to the inner walls of the circular grooves of the push plates. Then, the two motors of the two drive mechanisms drive the lead screws, which drive the two push plates to push the two pressure caps to the designated positions, so that the first sealing element of the outer diameter of the two pressure caps is fully engaged with the edge of the outer ring raceway. At this time, the inner sides of the two pressure caps are automatically locked, and the two pressure caps are fixed and cannot move outward. The magnetic attraction mechanism is de-energized, and the two lead screws drive the two push plates to return to the starting position. During the phosphating process, the air inside the bearing outer ring expands during heating, and the expanded air compresses the second seal between the two glands. After phosphating is completed, the self-locking mechanism is turned, the self-locking mechanism in the bearing outer ring is unlocked, and the two glands are removed.

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