A test device and test method for a ring belt assembly process of a wedge ring coupling structure

Abstract

The application discloses a kind of wedge ring coupling structure ring belt assembly process test device and test method, a test device includes ring outer shell, ring inner shell, image sensor, wedge ring belt A, wedge ring belt B;In the application, the distance between wedge ring belt and the outer surface of ring outer shell, the inner surface of ring inner shell can be measured respectively by the setting of multiple image sensors, the extrusion state between wedge ring belt A, wedge ring belt B and the matching surface during assembly process can be measured by force sensor, and the assembly state of wedge ring structure can be judged by comprehensive analysis of measured data;The whole device and method facilitate designer to understand, master wedge ring belt assembly state and related influencing factors, find out the influencing factors affecting assembly relationship and performance, guide structure optimization design, and improve structure reliability.

Description

Technical Field

[0001] This invention relates to the field of wedge ring connection structure design and assembly technology, and in particular to a test device and test method for the assembly process of a wedge ring connection structure ring belt. Background Technology

[0002] Compared with the traditional flange-bolt connection structure, wedge ring connection has the advantages of light added weight, smooth connection surface and compact structure. It is widely used in torpedoes, missiles, spacecraft and underwater vehicles, and has formed GJB819A "Wedge Ring Connection" as the technical requirement for cylindrical shell connection design. A wedge ring connection structure generally consists of connected components (outer ring body and inner ring body), a pair of wedge-shaped ring bands, filler blocks, a cover plate, and positioning screws. Its design and assembly process are roughly as follows: the outer ring body and the inner ring body are respectively provided with annular grooves. The outer ring body is designed with a window for inserting the ring band and an interface for mounting the cover plate, and the inner ring body is designed with positioning holes. The outer ring body and the inner ring body are assembled to form an annular cavity with a rectangular cross section. First, a wedge-shaped ring band is inserted counterclockwise through the window area of ​​the outer ring body, and the wedge-shaped ring band is connected to the inner ring body using positioning screws. Then, another wedge-shaped ring band (whose inclined surface is opposite to the inclined surface of the first ring band) is inserted clockwise through the window area of ​​the outer ring body. The filler block is embedded in the gap formed by the large end faces of the two wedge-shaped ring bands. Finally, the cover plate is installed on the outer ring body.

[0003] The assembly state of a wedge ring connection directly affects the performance of the connected components under specified service conditions, and is often assessed only through repeated assembly and environmental testing. However, the radial and axial contact between the wedge ring and the connected components, as well as the contact between the two rings, during the process of the wedge ring being inserted into the narrow annular cavity is difficult to observe due to the fact that the connected components are made of metal. Furthermore, to facilitate designers' understanding of the wedge ring assembly state and related influencing factors, optimize design parameters, and improve structural reliability, it is necessary to develop a testing device and method for the wedge ring connection assembly process to address these issues. Summary of the Invention

[0004] The purpose of this invention is to design a test device and test method for the assembly process of a wedge ring connection structure ring belt in order to solve the above problems.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] A test apparatus for assembling a wedge-ring connection structure ring belt, comprising:

[0007] An outer ring body; a first annular groove is provided on the inner wall of the first end of the outer ring body;

[0008] The inner and outer rings are both formed as annular structures. A second annular groove is provided on the outer wall of the first end of the inner ring. The first end of the inner ring is inserted into the first end of the outer ring, and the first and second annular grooves form an annular cavity.

[0009] An image sensor is provided; a plurality of first reserved holes are provided at the bottom of the first annular groove, and a plurality of second reserved holes are provided at the bottom of the second annular groove. The image sensor is installed in the first reserved holes and the second reserved holes.

[0010] Wedge-shaped ring A and wedge-shaped ring B; both wedge-shaped ring A and wedge-shaped ring B are annular structures with breaks. Notches are provided on the side wall of the outer shell of the ring, and the notches are connected to the first annular groove. Wedge-shaped ring A and wedge-shaped ring B are installed in the annular cavity through the notches, and the notches are closed by a cover plate.

[0011] Furthermore, a mounting hole is provided on one side of the second annular groove, and a force sensor is installed in the mounting hole.

[0012] Furthermore, a threaded hole is provided at the bottom of the second annular groove of the inner ring housing, and a first large end through hole is provided on the wedge-shaped ring A accordingly. The screw of the positioning screw passes through the first large end through hole and is screwed into the threaded hole for installation.

[0013] Specifically, the test apparatus also includes filler blocks, which fill the space between the two ends of the wedge-shaped ring A and between the two ends of the wedge-shaped ring B.

[0014] Preferably, both wedge-shaped ring A and wedge-shaped ring B are made of 7A04 aluminum alloy.

[0015] A test method for a test apparatus for the assembly process of a wedge-ring connection structure ring belt.

[0016] S1: Symmetrically measure the outer cylindrical diameter of the first annular groove region of the outer shell and the inner cylindrical diameter of the second annular groove region of the inner shell. Apply lubricating oil to the first annular groove, the second annular groove, wedge-shaped ring A, and wedge-shaped ring B. Install the image sensor in the first and second reserved holes. Install the force sensor in the mounting hole.

[0017] S2: Align and assemble the first end of the inner ring housing with the first end of the outer ring housing, apply axial pressure from the second end of the inner ring housing to the first end until it can no longer move forward, and obtain the largest annular cavity;

[0018] S3: Insert the wedge-shaped ring A into the annular cavity from the first end of the notch on the side wall of the outer ring housing. Assemble it until the first large end through hole of the wedge-shaped ring A is aligned with the threaded hole of the inner ring housing. Screw the positioning screw into the threaded hole through the large end through hole. During the insertion process, use an image sensor to record the contact state between the wedge-shaped ring A and the mating surface; use a force sensor to record the extrusion state between the wedge-shaped ring A and the mating surface during the assembly process.

[0019] S4: The wedge-shaped ring B is inserted into the annular cavity from the second end of the notch on the side wall of the annular shell. During the insertion process, the contact state between the wedge-shaped ring A and the wedge-shaped ring B and the mating surface is recorded by an image sensor, and the average value N of the distance from the wedge-shaped ring A and the wedge-shaped ring B to the outer surface of the annular shell is used to represent the contact state. The extrusion state between the wedge-shaped ring A and the wedge-shaped ring B and the mating surface is recorded by a force sensor during the assembly process. The maximum and minimum contact pressures at all test points are recorded as Fmax and Fmin, respectively.

[0020] S5: After the wedge ring belt B is assembled in place, install filler blocks between the two ends of the wedge ring belt A and between the two ends of the wedge ring belt B, and seal the notch on the outer ring shell with a cover plate;

[0021] S6: Remove the image sensor. Use a measuring tool to measure the distance from wedge-shaped ring A to the outer cylindrical surface of the outer shell of the ring, and record the average value at all measuring points as d1; use a measuring tool to measure the distance from wedge-shaped ring B to the outer cylindrical surface of the outer shell of the ring, and record the average value at all measuring points as d2; use a measuring tool to measure the distance from wedge-shaped ring A to the inner cylindrical surface of the inner shell of the ring, and record the average value at all measuring points as d3; use a measuring tool to measure the distance from wedge-shaped ring B to the inner cylindrical surface of the inner shell of the ring, and record the average value at all measuring points as d4.

[0022] The positional status of wedge ring A and wedge ring B in the wedge ring cavity can be obtained from this, and measured by W=|(d1+d3) / 2-(d2+d4) / 2|. The test information N from the image sensor is used. If |1-N / M|×100% is not greater than 15%, then the positional status of wedge ring A and wedge ring B in the wedge ring cavity is represented by the W value. Otherwise, they are reassembled.

[0023] S7: Based on the dimensional measurement information obtained in steps 1 and 6, as well as the test information obtained by the image sensor and force sensor, the assembly status of the wedge ring structure is comprehensively analyzed. Specifically, the smaller the W value and the difference between Fmax and Fmin, the better the assembly status of the wedge ring structure.

[0024] The beneficial effects of this invention are as follows:

[0025] In this invention, the distances between the wedge-shaped ring and the outer surface of the outer shell and the inner surface of the inner shell can be measured by setting up multiple image sensors. The extrusion state between the wedge-shaped ring A and wedge-shaped ring B and the mating surfaces during assembly can be measured by force sensors. The assembly state of the wedge ring structure can be determined by comprehensive analysis of the measured data. The entire device and method enable designers to deeply understand and master the assembly state of the wedge-shaped ring and related influencing factors, identify the factors affecting the assembly relationship and performance, guide the structural optimization design, and improve the structural reliability. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of the present invention - a partial cross-sectional view;

[0027] Figure 2 yes Figure 1 CC section view in the middle;

[0028] Figure 3 This is a schematic diagram of the structure of the outer ring shell in this invention - a partial cross-sectional view;

[0029] Figure 4 This is a schematic diagram of the inner ring shell structure in this invention - a partial cross-sectional view;

[0030] In the figure: 1. Outer ring body, 11. First ring groove, 12. First flange, 13. Notch, 14. First through hole, 15. First reserved hole, 2. Auxiliary component, 21. Filler block, 22. Cover plate, 23. Positioning screw, 3. Inner ring body, 31. Second ring groove, 32. Second flange, 33. Threaded hole, 34. Second through hole, 35. Second reserved hole, 36. Mounting hole, 4. Wedge ring band A, 41. First large end through hole, 5. Wedge ring band B, 51. Second large end through hole, 6. Image sensor, 7. Force sensor. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this invention, it should be understood that the terms "upper," "lower," "inner," "outer," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0036] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" 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; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0038] like Figure 1 and 3 As shown in Figure 4, a test apparatus for the assembly process of a wedge-ring connection structure includes:

[0039] Ring-shaped outer shell 1; A first annular groove 11 is provided on the inner wall of the first end of the ring-shaped outer shell 1;

[0040] The inner shell 3; both the outer shell 1 and the inner shell 3 are formed into annular structures; a second annular groove 31 is provided on the outer wall of the first end of the inner shell 3; the first end of the inner shell 3 is inserted into the first end of the outer shell 1, and the first annular groove 11 and the second annular groove 31 form an annular cavity.

[0041] Image sensor 6; a plurality of first reserved holes 15 are provided at the bottom of the first annular groove 11, and a plurality of second reserved holes 35 are provided at the bottom of the second annular groove 31. The image sensor 6 is installed in the first reserved holes 15 and the second reserved holes 35.

[0042] Wedge-shaped rings A4 and B5 are both annular structures with breaks. A notch 13 is provided on the side wall of the outer shell 1, and the notch 13 communicates with the first annular groove 11. Wedge-shaped rings A4 and B5 are installed in the annular cavity through the notch 13, which is closed by a cover plate 22. The notch 13 can be closed by bolts or welding. The filler block 21 and the cover plate 22 constitute the auxiliary component 2.

[0043] like Figure 1 and 4 As shown, a mounting hole 36 is provided on one side of the second annular groove 31, and a force sensor 7 is installed in the mounting hole 36.

[0044] In some embodiments, a first flange 12 is provided at the second end of the annular housing 1, and a plurality of first through holes 14 are uniformly arranged axially on the first flange 12. The second end of the annular housing 1 is fixed to certain fasteners through the first through holes 14 and bolts. A second flange 32 is provided at the second end of the annular housing 1, and a third flange is provided at the first end of the annular housing 1. A plurality of mounting holes 36 are uniformly arranged axially on the third flange of the annular housing 1, and a plurality of force sensors 7 are respectively installed in the plurality of mounting holes 36. A plurality of second through holes 34 are uniformly arranged axially on the second flange 32 of the annular housing 1, and the second end of the annular housing 1 is connected to the device that applies axial force through the second through holes 34 and bolts.

[0045] In some embodiments, the reserved holes are arranged in two rows, one above the other. Each row includes multiple reserved holes arranged in a circle. The multiple reserved holes are evenly distributed and the holes on the two rows are aligned vertically. The holes in the upper row are used to install the image sensor 6 to record the contact state between the wedge-shaped ring A4 and the mating surface, and the holes in the lower row are used to install the image sensor 6 to record the contact state between the wedge-shaped ring B5 and the mating surface.

[0046] like Figure 2 As shown, the bottom of the second annular groove 31 of the inner housing 3 is provided with a threaded hole 33, and correspondingly, a first large end through hole 41 is provided on the wedge-shaped ring A4. The screw of the positioning screw 23 passes through the first large end through hole 41 and is screwed into the threaded hole 33 for installation. A second large end through hole 51 is provided on the wedge-shaped ring B5. Another function of the first large end through hole 41 and the second large end through hole 51 is to connect and cooperate with the installation tool when the wedge-shaped ring A4 and the wedge-shaped ring B5 are installed into the annular cavity. The working end of the installation tool extends into the first large end through hole 41 and the second large end through hole 51, and after performing installation pushing and squeezing actions, it is used for the installation of the wedge-shaped ring A4 and the wedge-shaped ring B5 respectively.

[0047] like Figure 2 As shown, the test apparatus also includes a filler block 21, which fills the space between the two ends of the wedge-shaped ring A4 and between the two ends of the wedge-shaped ring B5.

[0048] In some embodiments, both wedge-shaped ring A4 and wedge-shaped ring B5 are made of 7A04 aluminum alloy.

[0049] The following is an application example of a test device for the assembly process of a wedge-ring connection structure ring belt.

[0050] The first ring groove (11) of the outer ring shell (1) of the test device for the assembly process of the wedge ring connection structure ring belt has a diameter of 200mm, and the second ring groove (31) of the inner ring shell (3) has a diameter of 195mm. The material is 12Cr13 stainless steel. When a 400N axial force is applied to the end face of the second flange (32) of the inner ring shell (3), the maximum height of the wedge ring cavity is 10.2mm. The thickness of the wedge ring belt A (4) and the wedge ring belt B (5) is 2mm, and the combined height of the two is 10.2mm. The distance between the large ends of the wedge ring belt A (4) and the wedge ring belt B (5) entering the wedge ring cavity is 7mm. The first reserved hole (15) on the outer ring shell (1) and the second reserved hole (35) on the inner ring shell (3) are 16 through holes with a diameter of 2.5mm, and the mounting hole (36) of the inner ring shell (3) is 8 through holes with a diameter of 2mm.

[0051] The test device for the assembly process of the wedge ring connection structure can clearly reflect the contact and compression states during the assembly of the wedge ring structure, providing more measured information for structural optimization design and thus improving the reliability of this type of connection structure.

[0052] A test method for a test apparatus for the assembly process of a wedge-ring connection structure ring belt.

[0053] S1: Symmetrically measure the outer cylindrical diameter of the first annular groove 11 region of the outer ring shell 1 and the inner cylindrical diameter of the second annular groove 31 region of the inner ring shell 3. Apply lubricating oil to the first annular groove 11, the second annular groove 31, the wedge-shaped ring A4, and the wedge-shaped ring B5. Install the image sensor 6 in the first reserved hole 15 and the second reserved hole 35. Install the force sensor 7 in the mounting hole 36.

[0054] S2: Align and assemble the first end of the inner ring housing 3 with the first end of the outer ring housing 1, and apply axial pressure from the second end of the inner ring housing 3 to the first end until it can no longer move forward, thus obtaining the largest annular cavity.

[0055] S3: Insert the wedge-shaped ring belt A4 into the annular cavity from the first end of the notch 13 on the side wall of the outer ring housing 1, and assemble it until the first large end through hole 41 of the wedge-shaped ring belt A4 is aligned with the threaded hole 33 of the inner ring housing 3. Then, screw the positioning screw 23 into the threaded hole 33 through the large end through hole. During the insertion process, the image sensor 6 records the contact state between the wedge-shaped ring belt A4 and the mating surface; the force sensor 7 records the extrusion state between the wedge-shaped ring belt A4 and the mating surface during the assembly process.

[0056] S4: The wedge-shaped ring belt B5 is inserted into the annular cavity from the second end of the notch 13 on the side wall of the annular housing 1. During the insertion process, the image sensor 6 records the contact state between the wedge-shaped ring belt A4 and the mating surface, respectively, and the average value N of the distance from the wedge-shaped ring belt A4 and the wedge-shaped ring belt B5 to the outer surface of the annular housing 1 is used to represent the contact state. The force sensor 7 records the extrusion state between the wedge-shaped ring belt A4 and the wedge-shaped ring belt B5 and the mating surface during the assembly process. The maximum and minimum contact pressures at all test points are recorded as Fmax and Fmin, respectively.

[0057] S5: After the wedge-shaped ring belt B5 is assembled in place, filler blocks 21 are installed between the two ends of the wedge-shaped ring belt A4 and between the two ends of the wedge-shaped ring belt B5, and the notch 13 on the outer ring housing 1 is closed by the cover plate 22.

[0058] S6: Remove image sensor 6. Use a measuring tool to measure the distance from wedge-shaped ring A4 to the outer cylindrical surface of the outer shell 1, and record the average value at all measuring points as d1; use a measuring tool to measure the distance from wedge-shaped ring B5 to the outer cylindrical surface of the outer shell 1, and record the average value at all measuring points as d2; use a measuring tool to measure the distance from wedge-shaped ring A4 to the inner cylindrical surface of the inner shell 3, and record the average value at all measuring points as d3; use a measuring tool to measure the distance from wedge-shaped ring B5 to the inner cylindrical surface of the inner shell 3, and record the average value at all measuring points as d4.

[0059] The positional status of wedge rings A4 and B5 in the wedge ring cavity can be obtained from this, and measured using W=|(d1+d3) / 2-(d2+d4) / 2|. The test information N from image sensor 6 is used. If |1-N / M|×100% is not greater than 15%, then the positional status of wedge rings A4 and B5 in the wedge ring cavity is represented by the W value; otherwise, they are reassembled.

[0060] S7: Based on the dimensional measurement information obtained in steps 1 and 6, and the test information obtained by image sensor 6 and force sensor 7, the assembly status of the wedge ring structure is comprehensively analyzed. Specifically, the smaller the W value and the difference between Fmax and Fmin, the better the assembly status of the wedge ring structure.

[0061] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A test apparatus for the assembly process of a wedge-ring connection structure ring belt, characterized in that, include: Ring-shaped outer shell; A first annular groove is provided on the inner wall of the first end of the annular shell; Inner ring shell; Both the outer ring and the inner ring are formed into annular structures; a second annular groove is provided on the outer wall of the first end of the inner ring; the first end of the inner ring is inserted into the first end of the outer ring, and the first annular groove and the second annular groove form an annular cavity. Multiple image sensors; multiple first reserved holes are opened at the bottom of the first annular groove, and multiple second reserved holes are opened at the bottom of the second annular groove, and the multiple image sensors are respectively installed in the first reserved holes and the second reserved holes; Wedge-shaped ring A and wedge-shaped ring B; both wedge-shaped ring A and wedge-shaped ring B are annular structures with breaks. A notch is provided on the side wall of the outer shell of the ring. The notch is connected to the first annular groove. Wedge-shaped ring A and wedge-shaped ring B are installed in the annular cavity through the notch. The notch is closed by a cover plate. A mounting hole is provided on one side of the second annular groove, and a force sensor is installed in the mounting hole; The bottom of the second annular groove of the inner ring housing is provided with a threaded hole, and a first large end through hole is provided on the wedge-shaped ring A accordingly. The screw of the positioning screw passes through the first large end through hole and is screwed into the threaded hole for installation. The test apparatus also includes filler blocks, which fill the space between the two ends of wedge ring A and between the two ends of wedge ring B.

2. The test apparatus for the assembly process of a wedge-ring connection structure according to claim 1, characterized in that, Both wedge-shaped ring A and wedge-shaped ring B are made of 7A04 aluminum alloy.

3. The test method for the test apparatus of the wedge ring connection structure ring belt assembly process according to any one of claims 1-2, characterized in that, S1: Symmetrically measure the outer cylindrical diameter of the first annular groove region of the outer shell and the inner cylindrical diameter of the second annular groove region of the inner shell. Apply lubricating oil to the first annular groove, the second annular groove, wedge-shaped ring A, and wedge-shaped ring B. Install the image sensor in the first and second reserved holes. Install the force sensor in the mounting hole. S2: Align and assemble the first end of the inner ring housing with the first end of the outer ring housing, apply axial pressure from the second end of the inner ring housing to the first end until it can no longer move forward, and obtain the largest annular cavity; S3: Insert the wedge-shaped ring A into the annular cavity from the first end of the notch on the side wall of the outer ring housing. Assemble it until the first large end through hole of the wedge-shaped ring A is aligned with the threaded hole of the inner ring housing. Screw the positioning screw into the threaded hole through the large end through hole. During the insertion process, use an image sensor to record the contact state between the wedge-shaped ring A and the mating surface; use a force sensor to record the extrusion state between the wedge-shaped ring A and the mating surface during the assembly process. S4: The wedge-shaped ring B is inserted into the annular cavity from the second end of the notch on the side wall of the annular shell. During the insertion process, the contact state between the wedge-shaped ring A and the wedge-shaped ring B and the mating surface is recorded by an image sensor, and the average value N of the distance from the wedge-shaped ring A and the wedge-shaped ring B to the outer surface of the annular shell is used to represent the contact state. The extrusion state between the wedge-shaped ring A and the wedge-shaped ring B and the mating surface is recorded by a force sensor during the assembly process. The maximum and minimum contact pressures at all test points are recorded as Fmax and Fmin, respectively. S5: After the wedge ring belt B is assembled in place, install filler blocks between the two ends of the wedge ring belt A and between the two ends of the wedge ring belt B, and seal the notch on the outer ring shell with a cover plate; S6: Remove the image sensor. Use a measuring tool to measure the distance from wedge-shaped ring A to the outer cylindrical surface of the outer shell of the ring, and record the average value at all measuring points as d1; use a measuring tool to measure the distance from wedge-shaped ring B to the outer cylindrical surface of the outer shell of the ring, and record the average value at all measuring points as d2; use a measuring tool to measure the distance from wedge-shaped ring A to the inner cylindrical surface of the inner shell of the ring, and record the average value at all measuring points as d3; use a measuring tool to measure the distance from wedge-shaped ring B to the inner cylindrical surface of the inner shell of the ring, and record the average value at all measuring points as d4. From this, the positional state of wedge ring A and wedge ring B in the wedge ring cavity can be obtained, and measured by W=|(d1+d3) / 2-(d2+d4) / 2|; If |1-N / M|×100% is not greater than 15%, then the position of wedge ring A and wedge ring B in the wedge ring cavity is represented by the W value; otherwise, they are reassembled. N is the average value of the distance from wedge ring A and wedge ring B to the outer surface of the ring shell. S7: Based on the dimensional measurement information obtained from S1 and S6, as well as the test information obtained from the image sensor and force sensor, the assembly status of the wedge ring structure is comprehensively analyzed. Specifically, the smaller the W value and the difference between Fmax and Fmin, the better the assembly status of the wedge ring structure.

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