Sealing ring coating treatment device and method

Abstract

The invention belongs to the technical field of sealing ring machining treatment, and discloses a sealing ring coating treatment device and method.The sealing ring coating treatment device comprises a base, an outer ring grinding assembly, an inner ring grinding assembly and a control device, and the outer ring grinding assembly, the inner ring grinding assembly and the control device are arranged on the base; the outer ring grinding assembly comprises a first power shaft, a first supporting wheel, a first feeding device and a grinding block, the first supporting wheel is installed on the first power shaft, and the grinding block is arranged on the first feeding device; the inner ring grinding assembly comprises a second power shaft, a second supporting wheel, a grinding material, a second feeding device and a clamping jaw mechanism, the second supporting wheel is installed on the second power shaft, the grinding material is arranged on the outer circumference of the second supporting wheel, and the clamping jaw mechanism is arranged on the second feeding device and used for fixing the sealing ring; the control device controls start and stop and the rotating speed of the first power shaft and the second power shaft and controls start and stop of the first feeding device and the second feeding device. According to the invention, uneven grinding and local overheating can be prevented, and the grinding quality of the sealing ring coating is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of seal ring processing, and particularly to a seal ring coating treatment device and method. Background Art

[0002] Elastic metal sealing is a sealing technology developed to meet the technical requirements of low leakage, high heat resistance, and high creep resistance required for the sealing of aero-engines. To meet the high-temperature working environment, the base material of the metal seal ring is mostly selected from deformed high-temperature alloy thin strips. The profile quality and surface characteristics of the elastic metal seal ring are the key to ensuring the sealing performance of the aero-engine, and are of great significance for reducing the internal flow loss of the engine and increasing the thrust-to-weight ratio of the engine. The service environment of the elastic metal seal ring is extremely harsh, and it needs to withstand high temperature, high pressure, and high vibration conditions. The wear resistance of the base material of the elastic metal seal ring at high temperature is difficult to meet the requirements, and the seal ring will be severely worn during service, resulting in an increase in the gap between the seal ring and the mating parts, affecting the service life and working efficiency of the aero-engine. The replacement cycle of the elastic seal ring is long and the cost is high, so an alloy coating needs to be prepared on the mating surface of the elastic seal ring. The CoCrMoSi alloy coating is deposited on the mating surface of the seal ring by thermal spraying to effectively improve the high-temperature wear resistance of the elastic seal ring. Most of the elastic metal seal rings are thin-walled rotary parts with a fixed cross-section form, and their sealing principle is that they have good elasticity, can compensate for the separation displacement between the seal ring and the mating parts, and achieve sealing by direct surface contact between the seal ring and the mating parts.

[0003] During the coating spraying process of the elastic metal seal ring, the control of the spraying area is crucial, which directly affects the performance of the coating, the elasticity of the seal ring, and the final sealing effect. If the coating area coverage is too small, it will not achieve a good high-temperature wear resistance effect, while if the coating coverage area is too large, it will cause a decrease in the elasticity of the seal ring, affecting the sealing effect of the seal ring. In dynamic sealing applications, the elasticity of the coating has a more significant impact. If the coating coverage area is too large or too thick, it may cause the seal ring to fatigue and fail during repeated deformation.

[0004] During the thermal spraying process, a mask is used to cover the areas that do not need to be sprayed, only exposing the parts that require the coating. By programming the movement trajectory and spraying parameters of the spraying robot, precise spraying can be achieved. However, the shape of the elastic metal seal ring is relatively complex, and it is very easy for the coating edge to have problems such as unclear boundaries, excess coating, or adhesion to other parts. And during the spraying process, small particles will enter the mask and deposit in the areas that do not need to be sprayed, forming a weakly bonded coating that is loosely combined with the substrate. During service, this weakly bonded coating is prone to peeling off, posing a great safety hazard.

[0005] Therefore, after the coating of the elastic metal seal ring is sprayed, post-treatment is required, usually grinding, to precisely control the geometric dimensions of the seal ring and ensure its matching with the mating components; remove the weakly bonded coating to prevent the coating from peeling off during service; reduce or eliminate the residual stress inside the coating and improve the durability of the coating; optimize the sealing performance, reduce leakage, and improve the engine efficiency.

[0006] However, there are many problems to be solved urgently in the existing grinding technology for seal rings. The traditional manual grinding method relies on the experience and skills of operators. Due to the difficulty in precisely controlling the grinding force, it is easy to cause uneven grinding and local overheating of the coating, which not only affects the coating quality but also easily causes deformation of the elastic metal seal ring, and requires high professional skills of operators. In addition, due to the unique curved surface structure of the elastic metal seal ring, conventional grinding equipment, such as surface grinders, cylindrical grinders, internal grinders, centerless grinders, etc., cannot achieve comprehensive and precise processing of it, and the processing effect is difficult to meet the required standards. Summary of the Invention

[0007] The purpose of this application is to provide a seal ring coating treatment device and method to solve the problems of insufficient accuracy, difficult surface quality control, low efficiency, and easy deformation of the seal ring during processing of existing grinding equipment.

[0008] The technical solutions provided by this application are as follows: On the one hand, a seal ring coating treatment device is provided, including: A base, an outer ring grinding assembly, an inner ring grinding assembly, and a control device arranged on the base; The outer ring grinding assembly includes a first power shaft, a first support wheel, a first feeding device, and a grinding block. The first power shaft is arranged on the base, the first support wheel is fixedly installed on the first power shaft, the first feeding device is movably arranged on the base, and the grinding block is arranged on the first feeding device for grinding the outer ring of the seal ring; The inner ring grinding assembly includes a second power shaft, a second support wheel, abrasive, a second feeding device, and a jaw mechanism. The second power shaft is arranged on the base, the second support wheel is fixedly installed on the second power shaft, the abrasive is arranged on the outer circumference of the second support wheel, the second feeding device is movably arranged on the base, and the jaw mechanism is fixedly arranged on the second feeding device for fixing the seal ring; The control device is used to control the start and stop and rotation speed of the first power shaft and the second power shaft, and is used to control the start and stop of the first feeding device and the second feeding device.

[0009] In some embodiments, the jaw mechanism includes a pneumatic device and three clamping members. The three clamping members are evenly spaced along the circumferential direction and are respectively connected to the pneumatic device to adjust the inner diameter of the circle enclosed by the three clamping members through the pneumatic device.

[0010] In some embodiments, rubber pads are respectively provided at the contact positions between the inner side walls of the three clamping members and the sealing ring.

[0011] In some embodiments, the outer ring grinding assembly further includes a first box body and a first transparent cover. The first power shaft, the first support wheel, the first feeding device, and the grinding block are all arranged in the first box body. A first observation port is provided on the first box body, and the first transparent cover is arranged on the first observation port.

[0012] In some embodiments, the inner ring grinding assembly further includes a second box body and a second transparent cover. The second power shaft, the second support wheel, the second feeding device, and the jaw mechanism are arranged in the second box body. A second observation port is provided on the second box body, and the second transparent cover is arranged on the second observation port.

[0013] In some embodiments, the outer ring grinding assembly further includes a first dust collection net, and the first dust collection net is arranged in the first box body and is located below the first support wheel; The inner ring grinding assembly further includes a second dust collection net, and the second dust collection net is arranged in the second box body and is located below the second support wheel.

[0014] In some embodiments, the first support wheel is a rubber centrifugal wheel, and helical teeth are provided on the outer circumference of the first support wheel. The outer diameter of the first support wheel is greater than the inner diameter of the sealing ring.

[0015] In some embodiments, the second support wheel is a foam wheel, and the abrasive is a diamond abrasive belt with an adhesive backing; the outer diameter of the second support wheel is greater than the inner diameter of the sealing ring.

[0016] In some embodiments, the grinding block is an elastic diamond grinding block; the angle of the grinding block is adjustable within the range of 0° to 90°.

[0017] On the other hand, a method for treating the coating of the sealing ring is also provided. Using the sealing ring coating treatment device described in any of the above embodiments, the method includes: Fix the sealing ring on the first support wheel, adjust the position of the grinding block through the first feeding device, start the first power shaft, and the first power shaft drives the sealing ring to rotate, so that the grinding block and the outer side of the sealing ring generate relative friction to achieve grinding of the outer ring of the sealing ring; Clamp the seal ring through the jaw mechanism, move the seal ring through the second feeding device, align the abrasive with the inner ring grinding position of the seal ring, start the second power shaft, and the second power shaft drives the second support wheel to rotate, causing the abrasive on the second support wheel to generate relative friction with the inner side of the seal ring, thereby achieving grinding of the inner ring of the seal ring.

[0018] The technical effect of this application lies in: achieving comprehensive and precise processing of the seal ring through the outer ring grinding assembly and the inner ring grinding assembly; precisely controlling the start, stop, and rotation speed of the first power shaft and the second power shaft through the control device, adjusting the grinding force, avoiding the problem of removing adjacent coatings and forming coating gaps when removing excess coatings, precisely adjusting the grinding position through the first feeding device and the second feeding device, realizing refined control of the grinding process, enabling the grinding block and abrasive to grind the seal ring with appropriate pressure, speed, and position, preventing uneven grinding and local overheating, and improving the coating quality. Brief Description of the Drawings

[0019] The following further elaborates on this application in conjunction with the drawings and specific embodiments: Figure 1 It is a schematic structural diagram of a seal ring coating treatment device provided by an embodiment of this application; Figure 2 It is a schematic structural diagram of the first support wheel provided by an embodiment of this application; Figure 3 It is a schematic structural diagram of the second support wheel and jaw structure provided by an embodiment of this application; Figure 4 It is a physical picture of the seal ring after being ground by the seal ring coating treatment device of this application; Figure 5 It is a physical picture of the seal ring after being ground by the seal ring coating treatment device of this application and having undergone a springback test; Figure 6 It is a physical picture of the seal ring without post-treatment in Comparative Example 1; Figure 7 It is a physical picture of the seal ring after being manually ground in Comparative Example 2; Figure 8 It is a physical picture of the seal ring after being manually ground in Comparative Example 2 and having undergone a springback test; Figure 9 It is a physical picture of the seal ring after being ground by a grinding wheel in Comparative Example 2; Figure 10 It is a physical picture of the seal ring after being ground by a grinding wheel in Comparative Example 2 and having undergone a springback test.

[0020] Explanation of the Reference Numerals in the Drawings: 100, base; 200. Outer ring grinding assembly; 210. First power shaft; 220. First support wheel; 221. Helical gear; 230. First feeding device; 240. Grinding block; 250. First box body; 260. First transparent cover; 270. First dust collection net; 300. Inner ring grinding assembly; 310. Second power shaft; 320. Second support wheel; 330. Abrasive; 340. Second feeding device; 350. Jaw mechanism; 351. Clamping part; 360. Second box body; 370. Second transparent cover; 380. Second dust collection net; 400. Control device. Detailed implementation manners

[0021] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present application.

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the specific implementation manners of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other implementation manners can also be obtained.

[0023] To make the drawings concise, only the parts related to the present application are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, components with the same structure or function are only schematically shown one of them, or only one of them is marked. In this document, "one" not only means "only this one", but also means "more than one" situation.

[0024] It should also be further understood that the term "and / or" used in the specification and appended claims of the present application refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations.

[0025] In this text, it should be noted that unless otherwise clearly stipulated and defined, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Or, it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] In the embodiments shown in the drawings, the indication of directions (such as up, down, left, right, front, and back, etc.) is not absolute but relative when describing the structures and movements of various components, and is not used to limit the directions when the product is actually used.

[0027] In addition, in the description of this application, ordinal numbers, such as "first", "second", etc., are only used to distinguish and describe related objects, and cannot be understood as indicating or implying the relative importance or order between related objects.

[0028] As Figure 1 shown, in one or more embodiments, the present disclosure provides a seal ring coating treatment device, including a base 100, an outer ring grinding assembly 200, an inner ring grinding assembly 300, and a control device 400 arranged on the base 100. The base 100 serves as the support foundation of the entire device, and is used to carry the outer ring grinding assembly 200, the inner ring grinding assembly 300, and the control device 400 to ensure the stability and integrity of the entire device.

[0029] The outer ring grinding assembly 200 includes a first power shaft 210, a first support wheel 220, a first feeding device 230, and a grinding block 240. The first power shaft 210 is arranged on the base 100, the first support wheel 220 is fixedly installed on the first power shaft 210, the first feeding device 230 is movably arranged on the base 100, and the grinding block 240 is arranged on the first feeding device 230 and is used for grinding the outer ring of the seal ring. The first power shaft 210 can be the output shaft of a motor, providing power for outer ring grinding. The first power shaft 210 is connected to the first support wheel 220 to drive the first support wheel 220 to rotate. The seal ring is fixedly installed on the first support wheel 220, and the first support wheel 220 plays the role of fixing the seal ring and transmitting power, enabling the grinding block 240 to grind around the outer ring of the seal ring. The first feeding device 230 is movably arranged on the base 100 and can adjust the position of the grinding block 240 as needed to achieve grinding operations on different parts of the outer ring of the seal ring.

[0030] As Figure 1 and Figure 2As shown in the figure, the inner ring grinding assembly 300 includes a second power shaft 310, a second support wheel 320, abrasive 330, a second feeding device 340, and a jaw mechanism 350. The second power shaft 310 is disposed on the base 100. The second support wheel 320 is fixedly installed on the second power shaft 310. The abrasive 330 is disposed on the outer circumference of the second support wheel 320. The second feeding device 340 is movably disposed on the base 100. The jaw mechanism 350 is fixedly disposed on the second feeding device 340 and is used to fix the seal ring. The second power shaft 310 can be the output shaft of a motor, providing power for inner ring grinding. The second power shaft 310 is connected to the second support wheel 320, driving the second support wheel 320 to rotate. The abrasive 330 is disposed on the outer circumference of the second support wheel 320. The abrasive 330 contacts the inner ring of the seal ring and performs grinding on the inner ring of the seal ring. The second feeding device 340 is movably disposed on the base 100 and is used to adjust the position of the jaw mechanism 350. During grinding, the jaw mechanism 350 clamps the seal ring. The central axis of the jaw mechanism 350 and the central axis of the second support wheel 320 are on the same axis. When the second power shaft 310 is started, relative movement is generated between the abrasive 330 on the second support wheel 320 and the inner ring of the seal ring, realizing grinding of the inner ring of the seal ring.

[0031] The control device 400 is connected to the first power shaft 210, the second power shaft 310, the first feeding device 230, and the second feeding device 340, and is used to control the start / stop and rotation speed of the first power shaft 210 and the second power shaft 310, and is used to control the start / stop of the first feeding device 230 and the second feeding device 340, realizing precise control of the entire grinding process. The control device 400 can be one or two. When the control device 400 is one, the outer ring grinding assembly 200 and the inner ring grinding assembly 300 are controlled by one control device. When the control device 400 is two, one control device 400 controls the outer ring grinding assembly 200, and the other control device controls the inner ring grinding assembly 300.

[0032] The working process of the seal ring coating treatment device is as follows: (1) Outer ring grinding: Fix the seal ring on the first support wheel 220. Adjust the position of the grinding block 240 through the first feeding device 230 so that the grinding block 240 moves to the grinding position. Start the first power shaft 210. The first power shaft 210 drives the first support wheel 220 to rotate. The rotation of the first support wheel 220 causes the grinding block 240 to perform grinding on the outer ring of the seal ring. During the grinding process, adjust the rotation speed of the first power shaft 210 through the control device to control the grinding force of the grinding block 240 on the seal ring, and adjust the position of the grinding block 240 through the first feeding device 230 so that the grinding block 240 grinds different parts of the outer ring of the seal ring, realizing precise control of the grinding position.

[0033] (2)Inner ring grinding: Clamp the seal ring through the jaw mechanism 350, and adjust the position of the seal ring through the second feeding device 340 so that the inner ring of the seal ring contacts the abrasive 330 on the second support wheel 320; Start the second power shaft 310, the second power shaft 310 drives the second support wheel 320 to rotate, and the abrasive 330 on the outer circumference of the second support wheel 320 contacts and grinds the inner ring of the seal ring; During the grinding process, adjust the rotation speed of the second power shaft 310 through the control device 400 to control the rotation speed of the abrasive 330, and then adjust the grinding force to achieve the adjustment of the grinding effect on the inner ring.

[0034] It should be noted that in this application, the grinding sequence of the outer ring and the inner ring of the seal ring is not limited. The outer ring of the seal ring can be ground first, and then the inner ring of the seal ring can be ground; It is also possible to grind the inner ring of the seal ring first, and then grind the outer ring of the seal ring. In addition, the outer ring grinding assembly and the inner ring grinding assembly can start working at the same time to improve the grinding efficiency and save processing time. Moreover, the widths of the first support wheel 220 and the second support wheel 320 are both greater than the width of the seal ring, so that multiple seal rings can be placed at one time for grinding of the outer ring and the inner ring, improving the processing efficiency.

[0035] In this embodiment, the outer ring grinding assembly 200 and the inner ring grinding assembly 300 are used to achieve comprehensive and precise processing of the seal ring; By accurately controlling the start / stop and rotation speed of the first power shaft 210 and the second power shaft 310 through the control device 400, the grinding force can be adjusted, avoiding the problem of coating gaps formed by removing adjacent coatings when removing excess coatings. Through the first feeding device 230 and the second feeding device 340, the grinding position can be accurately adjusted, realizing the refined control of the grinding process, so that the grinding block 240 and the abrasive 330 can grind the seal ring with appropriate pressure, speed and position, preventing uneven grinding and local overheating, and improving the coating quality. In addition, the operation of the entire device is centrally controlled through the control device 400. The operator only needs to operate the interface or buttons of the control device 400 to achieve the control of the grinding process, and the operation is simple.

[0036] The principle of the seal ring coating treatment device of the present invention is reliable, the operation is simple, the efficiency is high, the stability and practicability are strong, ensuring the quality and service effect of the coated aeroengine metal seal ring after processing. After processing, the coating boundary of the aeroengine metal seal ring is clear, the seal ring is not deformed, and the leakage rate ≤ 1×10 -3 m 3 / s. After 5 rebound tests, the coating is intact without cracking or peeling.

[0037] In some embodiments, the grinding block 240 is an elastic diamond grinding block; the angle of the grinding block 240 is adjustable within the range of 0° to 90°. The angle of the grinding block 240 can be precisely adjusted and fixed to polish the seal ring with appropriate pressure, speed and angle, so as to prevent the removal of the coating that does not need to be removed and avoid forming coating gaps.

[0038] In some embodiments, as Figure 2 shown, the jaw mechanism 350 includes a pneumatic device and three clamping members 351. The three clamping members 351 are evenly spaced along the circumferential direction and are respectively connected to the pneumatic device to adjust the inner diameter of the circle enclosed by the three clamping members 351 through the pneumatic device.

[0039] When it is necessary to clamp the seal ring, the pneumatic device supplies compressed air to the clamping member 351. The compressed air enters the cylinder of the clamping member 351, pushes the piston to move, and the movement of the piston drives the clamping member 351 to move towards the center. The three clamping members 351 contract inward at the same time, so that the three clamping members 351 clamp the seal ring and firmly fix it on the jaw mechanism 350. When it is necessary to loosen the seal ring, the pneumatic device stops supplying compressed air to the clamping member 351, the gas in the cylinder is discharged, the piston returns to the initial position under the action of the return spring, and the clamping member 351 moves outward accordingly, releasing the clamping of the seal ring.

[0040] In this embodiment, through the precise control of the pneumatic device, the jaw mechanism 350 can achieve high-precision clamping operations. The three clamping members 351 are evenly distributed, which can ensure the uniform distribution of the clamping force, avoid causing excessive local pressure on the seal ring, and prevent the seal ring from being deformed due to force during the fixing process. The jaw mechanism 350 can be adjusted according to the size and shape of the seal ring. By adjusting the inner diameter of the circle enclosed by the clamping member 351 through the pneumatic device, it can adapt to seal rings of different sizes, and has strong versatility and flexibility. In addition, the structure of the jaw mechanism 350 is relatively simple, and the failure rate of the pneumatic device is relatively low, ensuring that the jaw mechanism 350 can operate stably and reliably, and reducing the impact of equipment failures on production.

[0041] Furthermore, rubber pads are respectively provided at the contact positions between the inner side walls of the three clamping members 351 and the seal ring. When clamping the seal ring, the rubber pads are in direct contact with the seal ring. The rubber pads have good softness and elasticity, which can effectively avoid scratches or damages to the surface coating of the seal ring when the clamping members 351 are in direct contact with the seal ring, thus protecting the integrity of the surface coating of the seal ring. The rubber pads can also increase the friction between the clamping members 351 and the seal ring, making the clamping more firm and preventing the seal ring from sliding during the processing. In addition, the elastic characteristics of the rubber pads enable them to absorb a certain amount of impact force and vibration, thus playing a buffering and shock-absorbing role during the clamping process and reducing the damage to the coating of the seal ring caused by excessive clamping force or vibration during the processing.

[0042] In some embodiments, as Figure 1 shown, the outer ring grinding assembly 200 further includes a first box body 250 and a first transparent cover 260. The first power shaft 210, the first support wheel 220, the first feeding device 230, and the grinding block 240 are all arranged inside the first box body 250. A first observation port is provided on the first box body 250, and the first transparent cover 260 is arranged on the first observation port.

[0043] When the sealing ring is ground on the outer ring, it is carried out inside the closed first box body 250, which can prevent the debris generated during the grinding process from splashing and injuring people. At the same time, it can also prevent the operator from contacting the high-speed rotating parts due to misoperation, improving safety. The transparent first transparent cover 260 is arranged on the first box body 250, enabling the operator to clearly see the grinding degree and realizing the precise control of the grinding degree.

[0044] As Figure 1 shown, the inner ring grinding assembly 300 further includes a second box body 360 and a second transparent cover 370. The second power shaft 310, the second support wheel 320, the second feeding device 340, and the jaw mechanism 350 are arranged inside the second box body 360. A second observation port is provided on the second box body 360, and the second transparent cover 370 is arranged on the second observation port.

[0045] When the sealing ring is ground on the inner ring, it is carried out inside the closed second box body 360, which can prevent the debris generated during the grinding process from splashing and injuring people. At the same time, it can also prevent the operator from contacting the high-speed rotating parts due to misoperation, improving safety. The transparent second transparent cover 370 is arranged on the second box body 360, enabling the operator to clearly see the grinding degree and realizing the precise control of the grinding degree.

[0046] Lamp tubes can also be arranged on the tops of the first box body 250 and the second box body 360, and the angles of the lamp tubes are adjustable within the range of 0° - 180°, which is convenient for the staff to observe carefully.

[0047] Furthermore, as Figure 1 shown, the outer ring grinding assembly further includes a first dust collecting net 270. The first dust collecting net 270 is arranged inside the first box body 250 and is located below the first support wheel 220; the inner ring grinding assembly further includes a second dust collecting net 380. The second dust collecting net 380 is arranged inside the second box body 360 and is located below the second support wheel 320.

[0048] The first dust collection net 270 is mainly used to collect dust and debris generated during the outer ring grinding process; the second dust collection net 380 is mainly used to collect dust and debris generated during the inner ring grinding process; this not only reduces the floating and diffusion of these substances in the air, avoids the impact of the dust generated during processing on the health of operators and the environment, but also prevents the dust and debris from accumulating on the surface of the workpiece and interfering with the observation of the grinding degree.

[0049] In some embodiments, such as Figure 3 shown, the first support wheel 220 is a rubber centrifugal wheel, and the outer circumference of the first support wheel 220 is provided with helical teeth 221. The outer diameter of the first support wheel 220 is larger than the inner diameter of the sealing ring. Preferably, the outer diameter of the first support wheel 220 is 1-3 mm larger than the inner diameter of the sealing ring.

[0050] The first support wheel 220 is made of rubber, which has good elasticity, wear resistance and shock absorption performance to maintain stability during high-speed rotation, reduce vibration, and avoid scratching or damaging the surface coating of the sealing ring; the outer diameter of the first support wheel 220 is larger than the inner diameter of the sealing ring, and the first support wheel 220 and the sealing ring are in interference fit to improve the fixing stability of the sealing ring; at the same time, the design of the helical teeth 221 increases the contact area and friction force between the wheel and the sealing ring, further improving the stability of the sealing ring and ensuring that the sealing ring will not be displaced during the grinding process.

[0051] In some embodiments, the second support wheel 320 is a foam wheel, and the abrasive 330 is a diamond abrasive belt with an adhesive backing; the outer diameter of the second support wheel 320 is larger than the inner diameter of the sealing ring. Preferably, the outer diameter of the second support wheel 320 is 1-3 mm larger than the inner diameter of the sealing ring.

[0052] The outer diameter of the second support wheel 320 is larger than the inner diameter of the sealing ring, so that the abrasive 330 outside the second support wheel 320 generates relative friction with the inner ring of the sealing ring to achieve inner ring grinding and polishing. The elastic characteristics of the foam wheel can effectively absorb vibration and reduce the jitter of the sealing ring during grinding, thereby improving the stability of processing. The abrasive 330 is a diamond abrasive belt, which has high grinding accuracy and can improve the grinding effect.

[0053] In the prior art, when using traditional grinding equipment to process the excess coating on the inner ring, there is also a problem that the excess coating is likely to take off the adjacent coating and form a coating notch. Moreover, there are weakly bonded coatings loosely combined with the substrate in the grooves of the inner ring, and it is difficult for traditional grinding equipment to accurately remove them. In this embodiment, through the cooperation of a foam wheel with a specific size and a flexible diamond abrasive belt, combined with the speed adjustment of the second power shaft 310, it is possible to remove the connection between the weakly bonded coating and the coating in the set spraying area without affecting the coating in the set spraying area, thereby realizing the peeling of the weakly bonded coating.

[0054] The present application also provides a method for treating the seal ring coating, which is implemented by using the seal ring coating treatment device described in the above embodiments. The treatment method includes: Fix the seal ring on the first support wheel, adjust the position of the grinding block through the first feeding device, start the first power shaft, and the first power shaft drives the seal ring to rotate, so that relative friction is generated between the grinding block and the outer side of the seal ring, realizing grinding of the outer ring of the seal ring; Clamp the seal ring through the jaw mechanism, move the seal ring through the second feeding device, make the abrasive correspond to the grinding position of the inner ring of the seal ring, start the second power shaft 310, and the second power shaft 310 drives the second support wheel to rotate, so that relative friction is generated between the abrasive on the second support wheel and the inner side of the seal ring, realizing grinding of the inner ring of the seal ring.

[0055] Specifically, for outer ring grinding: Fix the seal ring on the first support wheel 220, adjust the position of the grinding block 240 through the first feeding device 230, so that the grinding block 240 moves to the grinding position; Start the first power shaft 210, and the first power shaft 210 drives the first support wheel 220 to rotate. The rotation of the first support wheel 220 makes the grinding block 240 perform grinding on the outer ring of the seal ring; During the outer ring grinding process, adjust the rotation speed of the first power shaft 210 through the control device 400 to control the grinding force of the grinding block 240 on the seal ring, and adjust the position of the grinding block 240 through the first feeding device 230, so that the grinding block 240 grinds different parts of the outer ring of the seal ring, realizing precise control of the grinding position.

[0056] For inner ring grinding: Clamp the seal ring through the jaw mechanism 350, and adjust the position of the seal ring through the second feeding device 340, so that the inner ring of the seal ring contacts the abrasive 330 on the second support wheel 320. Among them, the central axis of the jaw mechanism 350 and the central axis of the second power shaft 310 are on the same axis; Start the second power shaft, and the second power shaft 310 drives the second support wheel 320 to rotate. The abrasive 330 on the outer circumference of the second support wheel 320 contacts and grinds the inner ring of the seal ring; During the inner ring grinding process, adjust the rotation speed of the second power shaft 310 through the control device 400 to control the rotation speed of the abrasive 330, and further adjust the grinding force, realizing the adjustment of the grinding effect of the inner ring.

[0057] Figure 4 Shown in the figure is a physical picture of the coated aeroengine metal seal ring after post-treatment by the seal ring coating treatment device of the present application. The coating boundary is clear and the seal ring is not deformed. The leakage rate of the coated aeroengine metal seal ring after post-treatment is measured, and the leakage rate is 8.2×10 -4 m 3 / s. The rebound test of the coated aeroengine metal seal ring after post-treatment is carried out. The physical pictures of the coating after 5 rebound tests are as shown in Figure 5As shown, its coating is intact without phenomena such as cracking or peeling.

[0058] Comparative Example 1: Figure 6 It is a physical picture of a coated aeroengine metal seal ring without post-treatment. There is excess coating on both the outer and inner rings of the seal ring. Part of the coating at the groove of the seal ring peeled off during ultrasonic cleaning.

[0059] Comparative Example 2: The coated aeroengine metal seal ring was manually post-treated. The specific method was to hold the seal ring and sandpaper by hand and use the sandpaper to grind the excess coating part of the seal ring. Figure 7 It is a physical picture of the coated aeroengine metal seal ring after manual grinding. Its coating has notch phenomena and the seal ring is locally deformed. After the coated aeroengine metal seal ring after post-treatment was subjected to a rebound test, the physical picture of the coating after 5 rebound tests is as Figure 8 shown, and its coating is locally cracked.

[0060] Comparative Example 3: The coated aeroengine metal seal ring was post-treated with a grinding wheel. The specific method was to hold the seal ring by hand and use the grinding wheel to grind the excess coating part of the seal ring. Figure 9 It is a physical picture of the coated aeroengine metal seal ring after being ground by a grinding wheel. Its coating has notch phenomena and the seal ring is locally deformed. After the coated aeroengine metal seal ring after post-treatment was subjected to a rebound test, the physical picture of the coating after 5 rebound tests is as Figure 10 shown, and its coating is locally cracked and peeled off.

[0061] In the above embodiments, the descriptions of each embodiment have their own emphases. For parts not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0062] It should be noted that the above embodiments can be freely combined according to needs. The above is only the preferred embodiment of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A sealing ring coating treatment device, characterized in that: include: A base, an outer ring grinding assembly, an inner ring grinding assembly and a control device arranged on the base; The outer ring grinding assembly includes a first power shaft, a first supporting wheel, a first feeding device and a grinding block, wherein the first power shaft is arranged on the base, the first supporting wheel is fixedly mounted on the first power shaft, the first feeding device is movably arranged on the base, and the grinding block is arranged on the first feeding device, and is used for grinding the outer ring of the sealing ring; The inner ring grinding assembly comprises a second power shaft, a second supporting wheel, an abrasive, a second feeding device and a clamping mechanism, wherein the second power shaft is arranged on the base, the second supporting wheel is fixedly mounted on the second power shaft, the abrasive is arranged on the outer circumference of the second supporting wheel, the second feeding device is movably arranged on the base, and the clamping mechanism is fixedly arranged on the second feeding device for fixing the sealing ring; The control device is used to control the start and stop and the rotation speed of the first power shaft and the second power shaft, and is used to control the start and stop of the first feeding device and the second feeding device.

2. A sealing ring coating treatment device according to claim 1, characterized in that: The clamping mechanism comprises a pneumatic device and three clamping members, wherein the three clamping members are evenly spaced along the circumferential direction and are respectively connected to the pneumatic device so that the inner diameter of the circle enclosed by the three clamping members can be adjusted through the pneumatic device.

3. A sealing ring coating treatment device according to claim 2, characterized in that: Rubber pads are respectively provided at the contact points between the inner side walls of the three clamping parts and the sealing ring.

4. A sealing ring coating treatment device according to claim 1, characterized in that: The outer ring grinding assembly also includes a first box body and a first transparent cover. The first power shaft, the first supporting wheel, the first feeding device and the grinding block are all arranged in the first box body. The first box body is provided with a first observation port, and the first transparent cover is arranged on the first observation port.

5. A sealing ring coating treatment device according to claim 4, characterized in that: The inner ring grinding assembly also includes a second box body and a second transparent cover, the second power shaft, the second support wheel, the second feeding device and the clamping mechanism are arranged in the second box body, the second box body is provided with a second observation port, and the second transparent cover is arranged on the second observation port.

6. A sealing ring coating treatment device according to claim 5, characterized in that: The outer ring grinding assembly further includes a first dust collecting net, which is disposed in the first box body and below the first supporting wheel; The inner ring grinding assembly also includes a second dust collecting net, which is arranged in the second box body and below the second supporting wheel.

7. The sealing ring coating treatment device according to claim 1, characterized in that: The first supporting wheel is a rubber centrifugal wheel, and the outer circumference of the first supporting wheel is provided with helical teeth, and the outer diameter of the first supporting wheel is greater than the inner diameter of the sealing ring.

8. The sealing ring coating treatment device according to claim 1, characterized in that: The second supporting wheel is a foam wheel, and the abrasive is a diamond abrasive belt with adhesive backing; the outer diameter of the second supporting wheel is greater than the inner diameter of the sealing ring.

9. The sealing ring coating treatment device according to claim 1, characterized in that: The grinding block is an elastic diamond grinding block; the angle of the grinding block is adjustable within the range of 0° to 90°.

10. A sealing ring coating treatment method, characterized in that: Using the sealing ring coating treatment device according to any one of claims 1 to 9, the method comprises: The sealing ring is fixed on the first supporting wheel, and the position of the grinding block is adjusted by the first feeding device, and the first power shaft is started. The first power shaft drives the sealing ring to rotate, so that the grinding block and the outer side of the sealing ring generate relative friction, thereby grinding the outer ring of the sealing ring; The sealing ring is clamped by a clamping claw mechanism, and the sealing ring is moved by a second feeding device so that the abrasive corresponds to the inner ring grinding position of the sealing ring, and the second power shaft is started. The second power shaft drives the second support wheel to rotate, so that the abrasive on the second support wheel and the inner side of the sealing ring produce relative friction, thereby achieving grinding of the inner ring of the sealing ring.

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