Edge plate grinding allowance detection tool

Abstract

The present disclosure relates to the technical field of aero-engine, and particularly relates to a rim plate grinding amount detection tool. The rim plate grinding amount detection tool comprises: a mounting seat, which is used for mounting a blade disc sector and limiting the radial displacement of the blade disc sector by clamping the upper rim plate and the lower rim plate of the blade disc sector; and two baffle plates, which are circumferentially slidably arranged on the mounting seat and are respectively used for abutting the circumferential two ends of the upper and lower rim plates of the blade disc sector. Based on this, the assembly and repair efficiency of the blade disc sector can be improved.

Description

Technical Field

[0001] This disclosure relates to the field of aero-engine technology, and in particular to a tooling for detecting the amount of edge plate grinding. Background Technology

[0002] In aero engines, the fifth to ninth stage rectifier assemblies are installed in the rear stator of the high-pressure compressor. These rectifier assemblies are all assembled from bladed disk sector sections cut from an integral bladed disk. To ensure the compressor's operating performance, the total clearance between the bladed disk sector sections of the same stage must be checked during assembly. If the total clearance is less than the specified value, the upper and lower edge plates of the bladed disk sector sections need to be ground to make the total clearance meet the requirements.

[0003] Because the clamping and positioning of the fan-shaped segments of the bladed disk is difficult, the amount of grinding required for the upper and lower edge plates of each fan-shaped segment needs to be determined based on the actual assembly conditions. Therefore, the grinding of the upper and lower edge plates is often carried out by fitter. The amount of grinding each time directly affects the size of the total assembly clearance. If the amount of grinding is not appropriate, multiple trial assembly and rework may be required.

[0004] In related technologies, there is no dedicated tooling for detecting the amount of edge plate grinding, making it difficult to determine the amount of grinding after each grinding, which affects assembly and rework efficiency. Summary of the Invention

[0005] The present disclosure aims to provide a tooling for detecting the amount of rim grinding on the bladed disk fan section, thereby improving assembly and rework efficiency.

[0006] To achieve the above objectives, the flange grinding amount detection fixture provided in this disclosure includes:

[0007] Mounting bracket, used to mount the bladed disk sector segment, and restricts the radial displacement of the sector segment by locking the upper and lower edge plates of the sector segment; and

[0008] Two baffles are circumferentially slidable on the mounting base and are used to abut the upper and lower edge plates of the fan-shaped section of the blade disk at their respective circumferential ends.

[0009] In some embodiments, the mounting base includes a base and a mounting plate, the mounting plate being disposed on the base and used to hold the upper and lower edge plates of the impeller sector segment, and two baffles being circumferentially slidable on the base.

[0010] In some embodiments, the mounting base is provided with a first stop and a second stop, which are used to engage with the upper edge plate and the lower edge plate, respectively.

[0011] In some embodiments, the mounting plate is detachably mounted on the base.

[0012] In some embodiments, the baffle is angle-adjustably mounted on the mounting base.

[0013] In some embodiments, the mounting base is provided with a first slide rail and a second slide rail, and the baffle is provided with a first fastener and a second fastener. The first fastener cooperates with the first slide rail, and the second fastener cooperates with the second slide rail, so that the baffle angle is adjustable and can slide circumferentially.

[0014] In some embodiments, the flange grinding amount detection fixture includes an axial limiting member, which is circumferentially slidable on the mounting base and is used to limit the axial displacement of the blade disk sector.

[0015] In some embodiments, the axial limiting member includes a pressure plate and a pressure column. The pressure plate is circumferentially slidable on the mounting base, and the pressure column is disposed on the pressure plate and used to press against the axial surface of the bladed disk sector segment to limit the axial displacement of the bladed disk sector segment.

[0016] In some embodiments, the axial limiting member includes a cap disposed at the end of the pressure column, and the pressure column contacts the axial surface of the impeller sector segment through the cap.

[0017] In some embodiments, the tooling for detecting the amount of edge grinding includes a feeler gauge.

[0018] In some embodiments, the mounting base includes a first mounting edge, a second mounting edge, and a support plate. The support plate is connected between the first mounting edge and the second mounting edge. Two baffles are circumferentially slidably connected to the first mounting edge and the second mounting edge. The support plate is used to hold the upper edge plate and the lower edge plate of the impeller fan-shaped segment.

[0019] In some embodiments, a gap is provided between the baffle and the support plate.

[0020] The rim grinding amount detection fixture provided in this embodiment can detect the grinding amount of the rim plate of the bladed disk sector section. Since this makes it easier to achieve the specified value of total clearance in one go during trial assembly after mold repair, it is beneficial to improve the assembly and rework efficiency of the bladed disk sector section.

[0021] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the fan-shaped segment of the bladed disk.

[0024] Figure 2 for Figure 1 Top view.

[0025] Figure 3 This is a schematic diagram of the assembly of the flange grinding amount detection fixture and the bladed disk sector section in an embodiment of this disclosure.

[0026] Figure 4 This is a schematic diagram of the edge plate grinding amount detection fixture in an embodiment of this disclosure.

[0027] Figure 5 This is a schematic diagram of the base structure in an embodiment of this disclosure.

[0028] Figure 6 This is a schematic diagram of the mounting plate in an embodiment of this disclosure.

[0029] Figure 7 This is a schematic diagram of the structure of the pressure plate in an embodiment of this disclosure.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10. Flanged segment of the blade disc; 101. Upper edge plate; 102. Lower edge plate; 103. Blade;

[0032] 20; Tooling for detecting the amount of edge plate grinding;

[0033] 1. Mounting base; 11. Base; 12. Mounting plate; 13. First mounting edge; 14. Second mounting edge; 15. Support plate; 16. Base plate; 1a. First stop; 1b. Second stop; 1c. First slide rail; 1d. Second slide rail; 1e. Fitting opening; 1f. Slot; 1g. First slide rail; 1h. Second slide rail;

[0034] 2. Baffle; 21. First fastener; 22. Second fastener; 23. Bolt; 24. Nut; 25. Washer;

[0035] 3. Axial limiting component; 31. Pressure plate; 32. Pressure column; 33. Column cap; 34. Vertical plate; 35. First horizontal plate; 36. Second horizontal plate; 37. First sliding groove; 38. Second sliding groove; 39. Threaded hole;

[0036] A. Gap. Detailed Implementation

[0037] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0038] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0039] In the description of this disclosure, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this disclosure.

[0040] Furthermore, the technical features involved in the different embodiments of this disclosure described below can be combined with each other as long as they do not conflict with each other.

[0041] The high-pressure compressor of an aero-engine consists of a rotor, a front stator, and a rear stator. The rear stator houses the fifth, sixth, seventh, eighth, and ninth stage rectifier assemblies. Each stage rectifier assembly is composed of multiple bladed disk sector segments. In manufacturing each stage rectifier assembly, a complete annular bladed disk is first obtained. Then, the complete bladed disk is cut into multiple bladed disk sector segments, and each sector segment is machined. Finally, these bladed disk sector segments are assembled together to form a complete rectifier assembly.

[0042] Figure 1-2 The structure of the fan-shaped segment of the bladed disk obtained after cutting is shown. For example... Figure 1-2 As shown, the fan-shaped segment 10 of the bladed disk includes an upper edge plate 101, a lower edge plate 102, and a blade assembly. The blade assembly includes a plurality of blades 103 arranged at intervals along the circumference of the fan-shaped segment 10. The upper edge plate 101 and the lower edge plate 102 are connected to the radial ends of the blade assembly. The upper edge plate 101 is located radially outward of the blade assembly, and the lower edge plate 102 is located radially inward of the blade assembly. Figure 1 As shown, there is an included angle α between the two circumferential end faces of the fan-shaped segment of the bladed disk. Furthermore, as... Figure 2 As shown, there is an angle β between the cutting path of the fan-shaped segment 10 of the blade disk and the central axis.

[0043] For ease of description, the upper edge plate 101 and the lower edge plate 102 will be collectively referred to as the upper and lower edge plates or edge plates below. Unless otherwise stated, the circumferential, radial, and axial directions mentioned below correspond to the circumferential, radial, and axial directions of the bladed disk sector segment 10, respectively. Furthermore, the outer radial side and inner radial side of the bladed disk sector segment 10 are respectively referred to as upper and lower, and outer and inner; the two circumferential sides of the bladed disk sector segment 10 are respectively referred to as left and right; and the two axial sides of the bladed disk sector segment 10 are respectively referred to as front and rear. The defined upper, lower, left, right, front, and rear directions are... Figure 1-7 The top, bottom, left, right, front, and back are consistent.

[0044] As mentioned earlier, when assembling multiple bladed disk sector segments 10 to form a first-stage rectifier assembly, it is necessary to check whether the total clearance between the same-stage bladed disk sector segments 10 meets the design requirements to ensure the compressor's operating performance. Since an insufficient total clearance will affect the compressor's performance, when the total clearance between the same-stage bladed disk sector segments 10 is less than the specified value, the upper and lower edge plates are usually ground by fitter to increase the total clearance value.

[0045] Since there is no dedicated tooling in the relevant technology to detect the amount of edge plate grinding each time, it is difficult to accurately determine the amount of grinding after each grinding. The only way to confirm whether the total clearance value meets the requirements is to conduct trial assembly after each grinding. If the total clearance is still not met after the trial assembly, it needs to be reworked and ground again. In this case, multiple trial assemblies and rework are usually required, which is inefficient.

[0046] In view of the above situation, this disclosure provides a tooling for detecting the grinding amount of the blade fan section.

[0047] Figure 3-7 The structure of the edge plate grinding amount detection fixture of this disclosure is illustrated by way of example.

[0048] See Figure 3-7 The flange grinding amount detection fixture 20 provided in this embodiment includes a mounting base 1 and two baffles 2. The mounting base 1 is used to mount the bladed disk sector segment 10 and restricts the radial displacement of the bladed disk sector segment 10 by locking the upper flange 101 and lower flange 102 of the bladed disk sector segment 10. The two baffles 2 are circumferentially slidable on the mounting base 1 and are respectively used to abut the circumferential ends of the upper and lower flanges of the bladed disk sector segment 10.

[0049] Based on the above settings, the flange grinding amount detection fixture 20 can easily detect the grinding amount of the fan-shaped section 10 of the impeller.

[0050] This section uses the example of detecting the grinding amount on the right side of the upper and lower edge plates to illustrate the usage of the edge plate grinding amount detection fixture 20. In use, first, install the bladed disk sector segment 10 to be ground onto the mounting base 1, which radially locks the sector segment 10. Then, slide the two baffles 2, ensuring they are firmly attached to both circumferential ends of the sector segment 10 and remain stationary. Next, remove the sector segment 10 and grind the right end face of the upper and lower edge plates according to the required dimensions. After grinding, reinstall the ground sector segment 10 onto the mounting base 1, ensuring the left baffle 2 is close to the left end face of the upper and lower edge plates. Then, insert a feeler gauge of similar specifications to the grinding amount between the right end face of the upper and lower edge plates and the right baffle 2, measuring the gap between the feeler gauge and the right end face of the upper and lower edge plates. This gap represents the grinding amount on the right end face of the upper and lower edge plates. Throughout the process, whether the baffle 2 is tightly attached to the circumferential end face of the impeller sector 10 can be determined by whether a feeler gauge of a preset specification (e.g., a 0.02mm feeler gauge) can be inserted between the baffle 2 and the corresponding end face of the impeller sector 10. For example, when the left baffle 2 needs to be tightly attached to the left end face of the impeller sector 10, it should be ensured that the feeler gauge of the preset specification (e.g., a 0.02mm feeler gauge) cannot be inserted between the left baffle 2 and the left end face of the upper and lower edge plates; when the right baffle 2 needs to be tightly attached to the right end face of the impeller sector 10, it should be ensured that the feeler gauge of the preset specification (e.g., a 0.02mm feeler gauge) cannot be inserted between the right baffle 2 and the right end face of the upper and lower edge plates.

[0051] As can be seen, the provided flange grinding amount detection fixture 20 makes it possible to detect the grinding amount of the blade disk sector section 10. It can conveniently and quickly measure the grinding amount each time, which helps to reduce the number of trial assembly and grinding, and makes it possible to reach the specified value of total clearance at one time during trial assembly after grinding, thereby improving assembly and rework efficiency.

[0052] In order to limit the radial displacement of the blade disk sector segment 10 by the mounting base 1, see [reference needed]. Figure 3-6 In some embodiments, the mounting base 1 is provided with a first stop 1a and a second stop 1b, which are used to engage with the upper edge plate 101 and the lower edge plate 102, respectively. The first stop 1a and the second stop 1b are generally arc-shaped and have the same outline as the outer edge of the upper edge plate 101 and the inner edge of the lower edge plate 102, respectively.

[0053] By using the first stop 1a and the second stop 1b to snap the upper edge plate 101 and the lower edge plate 102, the mounting seat 1 can limit the radial displacement of the blade disk sector segment 10, prevent the blade disk sector segment 10 from moving radially during the measurement process, and facilitate the baffle 2 to abut against the circumferential end face of the blade disk sector segment 10.

[0054] To achieve circumferential sliding of the baffle 2 on the mounting base 1, see... Figure 3-6In some embodiments, the mounting base 1 is provided with a first slide rail 1c and a second slide rail 1d. Both the first slide rail 1c and the second slide rail 1d are arc-shaped slide rails extending circumferentially, arranged radially at intervals, with the first slide rail 1c located radially outside the second slide rail 1d. The upper and lower ends of the two baffles 2 are slidably connected to the first slide rail 1c and the second slide rail 1d, respectively. Thus, the two baffles 2 can slide along the first slide rail 1c and the second slide rail 1d, achieving circumferential movement. This facilitates the two baffles 2 avoiding obstacles during the loading and unloading of the bladed disk sector segment 10, and also ensures that the two baffles 2 adhere tightly to the circumferential end face of the bladed disk sector segment 10 after installation.

[0055] As one structural form of mounting base 1, see Figure 3-6 In some embodiments, the mounting base 1 includes a base 11 and a mounting plate 12. The mounting plate 12 is disposed on the base 11 and is used to hold the upper edge plate 101 and the lower edge plate 102 of the bladed disk sector segment 10, so as to limit the displacement of the bladed disk sector segment 10 by the mounting base 1.

[0056] Among them, such as Figure 5 As shown, the base 11 includes a first mounting edge 13, a second mounting edge 14, and a base plate 16. The first mounting edge 13 and the second mounting edge 14 are generally arc-shaped, and their circumferential, radial, and axial directions are respectively aligned with the circumferential, radial, and axial directions of the bladed disk sector segment 10. The first mounting edge 13 and the second mounting edge 14 are arranged radially at intervals, with the first mounting edge 13 located radially outside the second mounting edge 14. The first slide rail 1c and the second slide rail 1d mentioned above are respectively disposed on the first mounting edge 13 and the second mounting edge 14 to realize the sliding connection between the two baffles 2 and the first mounting edge 13 and the second mounting edge 14, thereby realizing the circumferential sliding of the two baffles 2 on the base 11. The base plate 16 is connected between the first mounting edge 13 and the second mounting edge 14, and the circumferential length of the base plate 16 is less than the circumferential length of the first mounting edge 13 and the second mounting edge 14, such that the two circumferential ends of the base plate 16 are located circumferentially inside the two circumferential ends of the first mounting edge 13 and the second mounting edge 14, that is, the two circumferential ends of the first mounting edge 13 and the second mounting edge 14 extend circumferentially outward relative to the two circumferential ends of the base plate 16. The base plate 16 is provided with a fitting opening 1e, which is used to install the mounting plate 12, and its shape and size are consistent with the shape and size of the outer contour of the mounting plate 12.

[0057] The mounting plate 12 is fitted into the fitting opening 1e and thus placed on the base plate 16, thereby enabling the mounting plate 12 to be installed on the base 11. Figure 6 As shown, in some embodiments, the mounting plate 12 is provided with a slot 1f for holding the blade disk sector segment 10. Specifically, as... Figure 6As shown, the slot 1f is arc-shaped with a closed bottom wall, used to support the fan-shaped segment 10 of the impeller disk, thereby limiting the axial rearward displacement of the fan-shaped segment 10. Simultaneously, the circumferential ends of the slot 1f are open, allowing the fan-shaped segment 10 to extend outward and contact the two baffles 2. Furthermore, the side walls at both radial ends of the slot 1f are respectively provided with the aforementioned first stop 1a and second stop 1b to limit the radial displacement of the fan-shaped segment 10. The first stop 1a is located radially outside the second stop 1b. The first stop 1a mates with the outer edge of the upper edge plate 101, and its dimensions are consistent with the outer diameter of the upper edge plate 101. The second stop 1b mates with the inner edge of the lower edge plate 102, and its dimensions are consistent with the inner diameter of the lower edge plate 102. For use, refer to... Figure 3 By placing the fan-shaped section 10 of the impeller into the slot 1f, the outer edge of the upper edge plate 101 is locked at the first stop 1a, and the inner edge of the lower edge plate 102 is locked at the second stop 1b, thus limiting the radial displacement of the fan-shaped section 10 of the impeller.

[0058] The mounting plate 12 and the base plate 16 can be collectively referred to as the support plate 15. That is, the support plate 15 includes the base plate 16 and the mounting plate 12 disposed on the base plate 16. At this time, the support plate 15 is connected between the first mounting edge 13 and the second mounting edge 14, and is used to hold the upper edge plate 101 and the lower edge plate 102 of the impeller sector segment 10. Two baffles 2 are located on both circumferential sides of the support plate 15. Specifically, the two baffles 2 are located on both circumferential sides of the base plate 16.

[0059] As can be seen, based on the above settings, the mounting base 1 can achieve the support and limiting of the blade disk sector section 10 and the sliding connection between it and the two baffles 2 with a relatively simple and compact structure, which facilitates the edge plate grinding amount detection fixture 20 to detect the grinding amount of the blade disk sector section 10.

[0060] See Figure 3 and Figure 4 In some embodiments, the flange grinding amount detection fixture 20 includes not only the mounting base 1 and two baffles 2, but also an axial limiting member 3. The axial limiting member 3 is circumferentially slidable on the mounting base 1 and is used to limit the axial displacement of the bladed disk sector segment 10.

[0061] Among them, such as Figure 3-4 As shown, in some embodiments, the axial limiting member 3 includes a pressure plate 31 and a pressure post 32. The pressure plate 31 is circumferentially slidable on the mounting base 1. The pressure post 32 is disposed on the pressure plate 31 and is used to press against the axial surface of the bladed disk sector segment 10 to limit the axial displacement of the bladed disk sector segment 10.

[0062] Specifically, such as Figure 4 and Figure 7As shown, the pressure plate 31 includes a vertical plate 34 and two horizontal plates. A pressure post 32 is disposed on the vertical plate 34. The vertical plate 34 extends radially. The two horizontal plates are a first horizontal plate 35 and a second horizontal plate 36, respectively connected to the upper and lower ends of the pressure plate 31, and both are bent in the same direction from the vertical plate 34. The first horizontal plate 35 has a first sliding groove 37. The second horizontal plate 36 has a second sliding groove 38. Correspondingly, the mounting base 1 (specifically, the first mounting edge 13 and the second mounting edge 14) has a first slide rail 1g and a second slide rail 1h. The first sliding groove 37 slides in conjunction with the first slide rail 1g, and the second sliding groove 38 slides in conjunction with the second slide rail 1h, realizing a sliding connection between the pressure plate 31 and the mounting base 1, allowing the pressure plate 31 to slide circumferentially on the mounting base 1. Furthermore, as... Figure 7 As shown, the upright plate 34 has two threaded holes 39, which are spaced apart along the vertical direction for installing two threaded connectors (e.g., bolts 23) that serve as pressure pillars 32. The two threaded connectors are screwed into the two threaded holes 39 to install the two pressure pillars 32 on the pressure plate 31.

[0063] When using, such as Figure 3 As shown, after the impeller sector segment 10 is installed on the mounting base 1, the pressure plate 31 can be slid towards the center of the circumference, so that the pressure plate 31 slides to the front of the impeller sector segment 10. Then, the two threaded connectors are tightened, so that the two threaded connectors apply pressure to the axial surface of the impeller sector segment 10. Together with the mounting base 1, the impeller sector segment 10 is axially positioned to prevent the impeller sector segment 10 from moving axially during the measurement process, especially when the two baffles 2 are pressed against the impeller sector segment 10. When it is necessary to pick up or put down the impeller sector segment 10, the two threaded connectors can be loosened and the pressure plate 31 can be slid to one side, so that the pressure plate 31 slides to one side, avoiding the pressure plate 31 from affecting the smooth picking up or putting down of the impeller sector segment 10.

[0064] Since the axial limiting component 3 can restrict the axial displacement of the bladed disk sector segment 10 and prevent the bladed disk sector segment 10 from moving axially during the measurement process, the axial limiting component 3, together with the mounting base 1, can more reliably position the bladed disk sector segment 10 radially and axially. This facilitates the baffle 2 to press against the circumferential end face of the bladed disk sector segment 10, preventing the bladed disk sector segment 10 from moving unexpectedly during the pressing process of the baffle 2, which would affect the accuracy of the measurement results.

[0065] Furthermore, by providing two pressure posts 32 in the axial limiting member 3 to press the bladed disk sector segment 10, the axial displacement of the bladed disk sector segment 10 can be more smoothly and reliably limited. The two pressure posts 32 can press against the axial end faces of the upper edge plate 101 and the lower edge plate 102, respectively.

[0066] Additionally, see Figure 4In some embodiments, the axial limiting member 3 includes not only the pressure plate 31 and the pressure post 32, but also a post cap 33. The post cap 33 is made of an elastic material such as rubber, and corresponds one-to-one with the pressure post 32, being disposed at the end of the pressure post 32. The pressure post 32 contacts the axial surface of the bladed disk sector segment 10 through the post cap 33. This prevents the axial limiting member 3 from creating indentations on the bladed disk sector segment 10 when pressing it, thus preventing damage to the bladed disk sector segment 10. In other words, the post cap 33 can provide a certain degree of protection for the bladed disk sector segment 10 without affecting the pressing effect.

[0067] The blade grinding amount detection fixture 20 provided in the aforementioned embodiments can conveniently detect the grinding amount of the blade disk fan-shaped section 10.

[0068] However, as mentioned earlier, the rear stator includes not just one stage of rectifier assembly, but five stages from the fifth to the ninth. In the fifth, sixth, seventh, eighth, and ninth stages of the rectifier assembly, the parameters of the bladed disk sector 10, such as the included angle α, included angle β, and radial dimensions (including the outer diameter of the upper edge plate 101 and the inner diameter of the lower edge plate 102), are not the same. If a separate blade grinding measurement fixture 20 were designed for each stage of the rectifier assembly, the processing and management costs would be high.

[0069] In view of the above situation, in order to enhance the flexibility of use of the bladed disk sector segment 10 and expand the scope of application of the bladed disk sector segment 10, this disclosure also designs the rim plate grinding amount detection fixture 20 as an adjustable rim plate grinding amount detection fixture, so that the rim plate grinding amount detection fixture 20 can detect the grinding amount of bladed disk sector segments 10 of different specifications.

[0070] To achieve the above objectives, see Figure 3-6 In some embodiments, the mounting plate 12 is detachably mounted on the base 11. Specifically, such as Figure 4-6 As shown, the mounting plate 12 is detachably snapped into the fitting opening 1e of the base plate 16. Since the mounting plate 12 is used to hold the upper and lower edge plates of the bladed disk sector segment 10, different mounting plates 12 can be used to inspect bladed disk sector segments 10 with different radial dimensions. For example, the radial positioning of bladed disk sector segments 10 of different rectifier stages can be achieved by replacing mounting plates 12 with different radial distances between the first stop 1a and the second stop 1b.

[0071] Additionally, see Figure 4 In some embodiments, the baffle 2 is angle-adjustably mounted on the mounting base 1. Specifically, such as... Figure 4As shown, in some embodiments, the baffle 2 is provided with a first fastener 21 and a second fastener 22. The first fastener 21 cooperates with the first slide rail 1c on the mounting base 1, and the second fastener 22 cooperates with the second slide rail 1d on the mounting base 1, so that the baffle 2 is angle-adjustable and can slide circumferentially. Both the first fastener 21 and the second fastener 22 include a bolt 23, a nut 24, and a washer 25. The bolt 23 is located at the end of the baffle 2 and is inserted into the slide rail (first slide rail 1c or second slide rail 1d), and is locked by the nut 24 and the washer 25. In this way, the baffle 2 can not only slide on the mounting base 1, but also change its angle on the mounting base 1 for posture adjustment; that is, the baffle 2 can move to any position and rotate at any angle on the mounting base 1. After the baffle 2 slides to the target position, it can be rotated to adjust the angle so that it can be close to the upper and lower edge plates. Then, the nut 24 is tightened to fix the baffle 2 in the corresponding position and posture, so that the baffle 2 can determine the position of the upper and lower edge plates before grinding. The washer 25 can be made of copper. In this way, the washer 25 is easy to deform, which can increase the contact area between the nut 24 and the arc-shaped mounting edge (i.e., the first mounting edge 13 and the second mounting edge 14), thereby making the baffle 2 more secure.

[0072] By configuring the baffle 2 to not only slide circumferentially but also have an adjustable angle, it is possible to easily engage the baffle 2 with impeller sector segments 10 that have different circumferential lengths and different α and β angle dimensions, thereby enabling the function of detecting the amount of wear. For example, for impeller sector segments 10 with different α and β angle dimensions in each stage of the rectifier assembly, simply adjusting the position and angle of the baffle 2 is sufficient to achieve engagement, which is simple and convenient.

[0073] With the mounting plate 12 being detachable and the baffle 2's angle and circumferential position adjustable, the flange grinding amount detection fixture 20 can not only detect the grinding amount of bladed disk sector sections 10 with different radial dimensions, but also those with different α and β values. This makes the flange grinding amount detection fixture 20 more flexible and applicable, allowing it to detect the grinding amount of all bladed disk sector sections 10 with different structural dimensions in the fifth to ninth stage rectifier assemblies. Since it is not necessary to design a separate flange grinding amount detection fixture 20 for each stage rectifier assembly's bladed disk sector section 10, the processing and management costs of the flange grinding amount detection fixture 20 can be reduced.

[0074] In the illustrated embodiment, the flange grinding amount detection fixture 20 can detect the grinding amount on the right side of the bladed disk sector section 10 according to the following steps:

[0075] 1. Assemble the mounting plate 12, which corresponds to the size of the bladed disk sector segment 10, into the fitting port 1e of the base 11, and then assemble the bladed disk sector segment 10 onto the mounting plate 12. At this time, the bladed disk sector segment 10 is radially locked and can only slide circumferentially on the mounting plate 12.

[0076] 2. Slide the pressure plate 31 above the bladed disk sector section 10, and press the front surface of the upper edge plate 101 and the front surface of the lower edge plate 102 of the bladed disk sector section 10 respectively by the two pressure columns 32 to achieve axial positioning of the bladed disk sector section 10.

[0077] 3. Move and rotate the left baffle 2 so that it is completely in contact with the left end face of the upper and lower edge plates of the impeller sector section 10 before grinding. Then tighten the two nuts 24 onto the two bolts 23 on the left baffle 2 to fix the left baffle 2. After tightening, ensure that a 0.02mm feeler gauge cannot be inserted between the left baffle 2 and the left end face of the upper and lower edge plates of the impeller sector section 10.

[0078] 4. Move and rotate the right baffle 2 so that it is completely in contact with the right end face of the upper and lower edge plates of the impeller sector section 10 before grinding. Then tighten the two nuts 24 onto the two bolts 23 on the right baffle 2 to fix the right baffle 2. After tightening, ensure that a 0.02mm feeler gauge cannot be inserted between the right baffle 2 and the left end face of the upper and lower edge plates of the impeller sector section 10.

[0079] 5. Loosen the two pressure posts 32 on the pressure plate 31 and slide the pressure plate 31 to one side. After removing the fan-shaped section 10 of the impeller from the mounting plate 12, grind the right end face of the upper and lower edge plates according to the required dimensions.

[0080] 6. Reassemble the polished bladed disk sector segment 10 into the edge plate polishing measurement fixture 20, so that the left side baffle 2 is close to the left end face of the upper and lower edge plates of the bladed disk sector segment 10, and fix the bladed disk sector segment 10 according to step 2. Ensure that the 0.02mm feeler gauge cannot be inserted between the left side baffle 2 and the left end face of the upper and lower edge plates of the bladed disk sector segment 10.

[0081] 7. Insert a feeler gauge of similar specification to the grinding amount between the right end face of the upper and lower edge plates of the impeller sector section 10 and the right side baffle 2, and measure the gap between them. This gap is the grinding amount of the right end face of the upper and lower edge plates of the impeller sector section 10.

[0082] It is understandable that when it is necessary to test the grinding amount on the left side of the bladed disk sector section 10, it is only necessary to interchange the left baffle 2 and the right baffle 2 in steps 6 and 7. At the same time, when it is necessary to test the grinding amount of the bladed disk sector section 10 of different rectifier assemblies, it is only necessary to replace the different mounting plates 12 in step 1, and adjust the position and angle of the baffle 2 accordingly in steps 3 and 4.

[0083] In the foregoing embodiments, such as Figure 3 As shown, a gap A can be provided between the baffle 2 and the support plate 15. When the support plate 15 includes a base plate 16 and a mounting plate 12 embedded in the fitting opening 1e of the base plate 16, the gap A between the baffle 2 and the support plate 15 is specifically located between the baffle 2 and the base plate 16. In this way, on the one hand, it is convenient for the feeler gauge to be inserted into the gap between the upper and lower edge plates of the impeller sector section 10 and the baffle 2 from any circumferential direction, avoiding local grinding thickness deviations caused by uneven wear; on the other hand, it can also prevent interference between the baffle 2 and the mounting base 1 when the baffle 2 rotates.

[0084] In summary, the blade grinding amount detection fixture 20 provided in this embodiment has a simple structure and is easy to use. It can quickly and accurately measure the grinding amount of the bladed disk sector 10, thereby improving assembly efficiency.

[0085] The above description is merely an exemplary embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A tooling (20) for detecting the grinding amount of a flange plate, characterized in that, include: Mounting base (1), the mounting base (1) is used to mount the bladed disk sector segment (10) and restricts the radial displacement of the bladed disk sector segment (10) by locking the upper edge plate (101) and lower edge plate (102) of the bladed disk sector segment (10); and Two baffles (2) are circumferentially slidable on the mounting base (1) and are respectively used to abut the upper and lower edge plates of the blade disk sector (10) at both ends of the circumferential direction. The mounting base (1) is provided with a first slide rail (1c) and a second slide rail (1d), so that the angle of the baffles (2) is adjustable and they can slide circumferentially.

2. The edge plate grinding amount detection fixture (20) according to claim 1, characterized in that, The mounting base (1) includes a base (11) and a mounting plate (12). The mounting plate (12) is disposed on the base (11) and is used to hold the upper edge plate (101) and lower edge plate (102) of the blade disk sector segment (10). The two baffles (2) are circumferentially slidably disposed on the base (11).

3. The edge plate grinding amount detection fixture (20) according to claim 2, characterized in that, The mounting base (1) is provided with a first stop (1a) and a second stop (1b), which are used to engage with the upper edge plate (101) and the lower edge plate (102), respectively.

4. The edge plate grinding amount detection fixture (20) according to claim 2, characterized in that, The mounting plate (12) is detachably mounted on the base (11).

5. The edge plate grinding amount detection fixture (20) according to claim 1, characterized in that, The baffle (2) is provided with a first fastener (21) and a second fastener (22). The first fastener (21) cooperates with the first slide rail (1c), and the second fastener (22) cooperates with the second slide rail (1d), so that the baffle (2) is adjustable in angle and can slide circumferentially.

6. The edge plate grinding amount detection fixture (20) according to claim 1, characterized in that, The blade grinding amount detection fixture (20) includes an axial limiting member (3), which is circumferentially slidably disposed on the mounting base (1) and is used to limit the axial displacement of the blade disk sector (10).

7. The edge plate grinding amount detection fixture (20) according to claim 6, characterized in that, The axial limiting member (3) includes a pressure plate (31) and a pressure column (32). The pressure plate (31) is circumferentially slidably disposed on the mounting base (1). The pressure column (32) is disposed on the pressure plate (31) and is used to press on the axial surface of the bladed disk sector segment (10) to limit the axial displacement of the bladed disk sector segment (10).

8. The edge plate grinding amount detection fixture (20) according to claim 7, characterized in that, The axial limiting member (3) includes a column cap (33), which is disposed at the end of the pressure column (32), and the pressure column (32) contacts the axial surface of the blade disk sector (10) through the column cap (33).

9. The edge plate grinding amount detection fixture (20) according to claim 1, characterized in that, The edge plate grinding amount detection fixture (20) includes a feeler gauge.

10. The edge plate grinding amount detection fixture (20) according to claim 1, characterized in that, The mounting base (1) includes a first mounting edge (13), a second mounting edge (14), and a support plate (15). The support plate (15) is connected between the first mounting edge (13) and the second mounting edge (14). The two baffles (2) are circumferentially slidably connected to the first mounting edge (13) and the second mounting edge (14). The support plate (15) is used to hold the upper edge plate (101) and the lower edge plate (102) of the impeller fan-shaped segment (10).

11. The edge plate grinding amount detection fixture (20) according to claim 10, characterized in that, A gap (A) is provided between the baffle (2) and the support plate (15).

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