Guide vane grinding clamp

Abstract

The utility model relates to the field of aero-engine manufacturing, in particular to a guide vane grinding clamp which comprises a base plate, a guide vane and a grinding wheel. The base plate is arranged in the middle of the base plate and fixedly connected with the base plate; the positioning device is arranged at one end of the base plate and fixedly connected with the base plate, the positioning device is connected with the corresponding position of the blade in an abutting mode, one end of the clamping device is fixedly connected with the chassis, and the other end of the clamping device is used for clamping the corresponding position of the blade. The supporting device is arranged at the other end of the base plate and fixedly connected with the base plate. The clamp can position the blade with high precision and clamp and fix the whole blade, so that the blade is kept stable in the grinding process, the blade is prevented from moving and deforming, and the machining quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of aero-engine manufacturing, specifically to a guide vane grinding fixture. Background Technology

[0002] Guide vanes are crucial components of aero-engines, characterized by their large span, complex structure, and challenging manufacturing processes. Among hollow guide vanes, the grinding of the arc and end face is particularly important during machining. This process serves as the benchmark for subsequent machining processes and also as the assembly benchmark for the blade. It demands high design precision, small dimensional tolerances, and stringent surface quality requirements. Traditional fixture positioning uses a six-point positioning method for the blank material, with a "bundling" clamping method applied to the thicker parts of the blade's leading or trailing edge. Because the blades of this new aircraft have a hollow, thin-walled structure, choosing the blade body as the clamping point makes the blade extremely prone to deformation during machining. Even minor changes can lead to a decline in blade performance. Utility Model Content

[0003] The technical problem to be solved by this invention is how to achieve high-precision positioning and stable clamping of blades while preventing deformation during processing.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A guide blade grinding fixture, comprising: a chassis for connecting to a machine tool; a pad disposed in the middle of the chassis and fixedly connected to the chassis; a positioning device disposed at one end of the pad and fixedly connected to the pad, the positioning device having a first positioning surface, a second positioning surface, a third positioning point, a first limiting point, and a second limiting point, the first positioning surface for abutting against one end face of the blade's major edge plate, the second positioning surface for abutting against one end face of the blade's minor edge plate, the third positioning point for abutting against the blade's back surface, the first limiting point for abutting against one end of one side of the blade's major edge plate, and the second limiting point for abutting against the other end of one side of the blade's major edge plate; a clamping device, one end of the clamping device fixedly connected to the chassis, the other end of the clamping device for clamping against the other end faces of the blade's major edge plate and minor edge plate; and a supporting device disposed at the other end of the pad and fixedly connected to the pad.

[0005] The beneficial effects of this utility model are as follows: By setting a chassis and fixing it to the machine tool, the entire fixture is secured. A pad is placed on the chassis to facilitate the grinding wheel reaching the grinding surface during blade processing, while also avoiding interference between the grinding wheel and the fixture. A positioning device determines and limits suitable positioning surfaces; that is, the first positioning surface, the second positioning surface, and the third positioning point correspond one-to-one with the corresponding positions of the blade's large edge plate, small edge plate, and blade back. The first and second limiting points abut against the two ends of the blade's large edge plate, limiting the circumferential rotation of the blade. A clamping device clamps and fixes the other end face of the blade's large edge plate and small edge plate, thereby limiting the radial movement of the blade. A support device further supports and fixes the blade's blade base side. This support device and the third positioning block are arranged opposite each other to ensure the overall stability of the blade clamping. This fixture can position the blade with high precision and clamp and fix the blade as a whole, keeping the blade stable during grinding, preventing blade movement and deformation, and improving processing quality.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the positioning device includes a first positioning block, a second positioning block, a third positioning block, a first positioning pin, and a second positioning pin. The first positioning block, the third positioning block, and the second positioning block are arranged sequentially at intervals. The first positioning block, the second positioning block, and the third positioning block are all fixedly connected to the pad. The first positioning pin and the second positioning pin are respectively disposed at both ends of the first positioning block and fixedly connected to the first positioning block. The top surface of the first positioning block has a first positioning surface, the top surface of the second positioning block has a second positioning surface, the side surface of the positioning block has the third positioning point, the side wall of the first positioning pin has the first limiting point, and the side wall of the second positioning pin has the second limiting point.

[0008] The beneficial effect of adopting the above-mentioned further solution is that by setting the first positioning block, the second positioning block, the third positioning block, the first positioning pin, and the second positioning pin, the installation position of the blade can be quickly and accurately determined.

[0009] Furthermore, the clamping device includes a support and a pressure plate. One end of the support is connected to the chassis, one end of the pressure plate is detachably connected to the support, and the other end of the pressure plate abuts against the other end faces of the blade's large edge plate and small edge plate.

[0010] The beneficial effects of adopting the above-mentioned further solution are: the clamping device is stabilized by setting a support and a pressure plate, and the support is connected to the chassis. One end of the pressure plate is detachably connected to the support, and the other end abuts against the other end face of the blade's large edge plate and small edge plate, thereby clamping and fixing the blade and restricting the blade's radial rotation and vertical jump.

[0011] Furthermore, a rib groove is provided in the middle of the other end face of the support, and one end of the pressure plate abuts against the rib groove; the support is also provided with a first sliding groove, there are two first sliding grooves, the two first sliding grooves are located on both sides of the rib groove, and the support is slidably connected to the chassis.

[0012] The beneficial effects of adopting the above-mentioned further solution are: by setting rib grooves on the support, the pressure plate placed on the support can be guided; by setting the first sliding groove on the support, the support and the chassis can be slidably connected, thereby adjusting the position of the support according to the actual size of the blade, and then adjusting the pressure plate and clamping the blade, thus making it suitable for the processing of various guide blades and improving the versatility and flexibility of the fixture.

[0013] Furthermore, the included angle between the pressure plate and the support is 45 degrees, and the support is also provided with a first support part, which abuts against the pressure plate.

[0014] The beneficial effects of adopting the above-mentioned further solution are: by setting the included angle between the pressure plate and the support to 45 degrees, interference between the grinding wheel and the pressure plate during the grinding process is avoided, thus preventing the smooth progress of the grinding work; and by setting the first support part on the support, the pressure plate is supported.

[0015] Furthermore, there are two clamping devices, which are disposed on both sides of the pad.

[0016] The beneficial effect of adopting the above-mentioned further solution is that the two clamping devices are respectively set with the first positioning block and the second positioning block and clamp the blade at the corresponding position, thereby completing the clamping and fixing of the blade.

[0017] Furthermore, the support device includes a third support, a support block, and an adjustment component. One end of the third support is fixedly connected to the pad, and a second sliding groove is provided on the other end face of the third support. The support block is placed in the second sliding groove and slidably connected to the second sliding groove. A through groove is provided on the support block, and the adjustment component is disposed in the through groove. One end of the adjustment component is connected to the support block, and the other end of the adjustment component is connected to the third support.

[0018] The beneficial effects of adopting the above-mentioned further solution are: by setting a second sliding groove on the third support, the support block can be changed and adjusted in the second sliding groove; by setting a through groove on the support block, it is convenient to set the adjustment component and adjust the relative position of the support block on the third support, so as to adaptively support and fix the blade.

[0019] Furthermore, the adjustment assembly includes a first pull pin, a spring, a first fixing pin, and a first adjusting bolt. One end of the first pull pin passes through the through groove and is fixedly connected to one end of the spring. The first fixing pin is disposed on the extension line of the first pull pin and is fixedly connected to the third support. The other end of the spring is fixedly connected to the first fixing pin. The other end of the first pull pin is fixedly connected to the support block. The first adjusting bolt passes through the through groove and is detachably connected to the third support.

[0020] The beneficial effect of adopting the above-mentioned further solution is that when the first adjusting bolt is screwed on and loosened, one end of the first pull pin is pulled, which in turn pulls the support block to slide in the second slide groove. At this time, the spring is stretched, the first pull pin is released, and the spring is reset under the action of elastic force, so that the spring drives the support block to move towards the blade. When one end of the support block abuts against the blade's rim plate side, the first adjusting bolt is tightened, thereby completing the support and fixation of the blade's rim plate side.

[0021] Furthermore, it also includes a rotary clamping device, which is disposed in the middle of the pad, one end of the rotary clamping device is fixedly connected to the pad, and the other end of the rotary clamping device abuts against the inner sidewall of the blade edge plate.

[0022] The beneficial effects of adopting the above-mentioned further solution are: by setting a rotary clamping device, one end of the rotary clamping device is fixedly connected to the pad, and the other end of the rotary clamping device abuts against the inner side wall of the blade's large edge plate, the blade is further clamped, making the overall clamping of the blade more stable and facilitating the smooth progress of the grinding work.

[0023] Furthermore, the rotary clamping device includes a fourth support, a rotary pin, a pressure hook, and a screw. A first groove is formed on the pad, the fourth support is placed in the first groove, a second groove is formed on the fourth support, the pressure hook is placed in the second groove, and is rotatably connected to the fourth support through the rotary pin. A through hole is formed on one side of the pad, the through hole communicates with the first groove, the screw passes through the through hole, one end of the screw abuts against one end of the pressure hook, and the other end of the pressure hook abuts against the inner sidewall of the blade edge plate.

[0024] The beneficial effect of adopting the above-mentioned further solution is that by screwing in the screw, one end of the screw abuts against the hook, thereby driving the other end of the hook to abut against the inner side of the blade's large edge plate, thus fixing the blade. Attached Figure Description

[0025] Figure 1 This is a top view of the guide vane grinding fixture of this utility model;

[0026] Figure 2 This is the front view of the guide vane grinding fixture of this utility model;

[0027] Figure 3 This is a side view of the guide vane grinding fixture of this utility model;

[0028] Figure 4 This is a BB cross-sectional view of the guide vane grinding fixture of this utility model;

[0029] Figure 5 This is a cross-sectional view of the guide vane grinding fixture of this utility model;

[0030] Figure 6 This is a schematic diagram of the guide vane grinding fixture of this utility model for clamping guide vanes;

[0031] Figure 7 This is a schematic diagram of the guide vane of this utility model;

[0032] Figure 8 This is another schematic diagram of the guide vane of this utility model.

[0033] The attached diagram lists the components represented by each number as follows:

[0034] 1. Chassis; 2. Pad; 3. First support; 4. Second support; 5. First pressure plate; 6. Second pressure plate; 7. First positioning block; 8. Second positioning block; 9. Third positioning block; 10. First positioning pin; 11. Second positioning pin; 12. First connecting pin; 13. Second connecting pin; 14. First support block; 15. Second support block; 16. Third support; 17. Fourth support; 18. First pull pin; 19. Pressure hook; 20. Rotating pin ; 21. Tightening screw; 22. First fastening screw; 23. First adjusting bolt; 24. Spring; 25. First fixing pin; 26. First support part; 27. Second fastening screw; 100. Blade; 110. Blade large edge plate; 111. Large edge plate protrusion; 120. Blade small edge plate; 121. Small edge plate inner circle boss; 122. Small edge plate protrusion; 130. Blade base; 140. Blade back; 150. Leading edge; 160. Trailing edge. Detailed Implementation

[0035] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0036] like Figure 7 and Figure 8 The diagram shows the structure of the guide blade, which mainly involves the blade's large edge plate 110, large edge plate protrusion 111, blade small edge plate 120, small edge plate inner circle boss 121, small edge plate protrusion 122, blade base 130, blade back 140, leading edge 150, trailing edge 160, positioning surface A, positioning surface C, positioning point D, support point E, support point G, limiting point H, limiting point L, and grinding area. The large edge plate 110 and the small edge plate 120 of the blade are located on both sides of the blade body. The leaf basin 130 is on the side facing the blade body, the leaf back 140 is on the side facing the blade, the front edge 150 is on the front end of the blade, and the rear edge 160 is on the rear end of the blade. A large edge plate protrusion 111 is provided on one side of the large edge plate 110, a small edge plate protrusion 122 is provided on one side of the small edge plate 120, and an inner circular boss 121 is provided in the middle of the small edge plate 120.

[0037] like Figures 1-6 As shown, this embodiment provides a guide blade grinding fixture, including: a chassis 1 for connecting to a machine tool; a pad 2 disposed in the middle of the chassis 1 and fixedly connected to the chassis 1; and a positioning device disposed at one end of the pad 2 and fixedly connected to the pad 2, the positioning device having a first positioning surface, a second positioning surface, a third positioning point, a first limiting point, and a second limiting point, the first positioning surface being used to abut against one end face of the blade's large edge plate 110, and the second positioning surface being used to abut against the blade's small edge plate 110. One end face of 20 abuts against the third positioning point abuts against the back 140 of the blade 100; the first limiting point abuts against one end of the blade major edge plate 110; the second limiting point abuts against the other end of the blade major edge plate 110; a clamping device, one end of which is fixedly connected to the chassis 1; the other end of which is used to clamp against the other end faces of the blade major edge plate 110 and the blade minor edge plate 120; a supporting device, which is disposed at the other end of the pad 2 and fixedly connected to the pad 2.

[0038] By setting up a chassis 1, which is fixedly connected to the machine tool, the entire fixture is fixed. A pad 2 is set on the chassis 1 to facilitate the grinding wheel reaching the grinding surface during the processing of the blade 100, while also avoiding interference between the grinding wheel and the fixture. A positioning device determines and limits the appropriate positioning surface, that is, the first positioning surface, the second positioning surface, and the third positioning point correspond one-to-one with the corresponding positions of the blade large edge plate 110, the blade small edge plate 120, and the blade back 140, respectively, limiting the radial movement and circumferential rotation of the blade 100. The first limiting point and the second limiting point abut against the two ends of the blade large edge plate 110, respectively, and the clamping device clamps and fixes the other end face of the blade large edge plate 110 and the blade small edge plate 120, thereby limiting the radial movement of the guide blade. The support device further supports and fixes the blade basin 130 side. The support device and the third positioning block are set opposite to each other to ensure the overall stability of the blade 100 clamping. This fixture can position the blade 100 with high precision and clamp and fix the blade 100 as a whole, so that the blade 100 remains stable during the grinding process, preventing the blade 100 from moving and deforming, thus improving the processing quality.

[0039] Specifically, a large edge plate protrusion 111 is provided on the large edge plate 110 of the blade, and a small edge plate protrusion 122 is provided on the small edge plate 120 of the blade. A first positioning surface abuts against one end face of the large edge plate protrusion 111, and a second positioning surface abuts against one end face of the small edge plate protrusion 122. The other end of the clamping device abuts against and clamps the other end faces of the large edge plate protrusion 111 and the small edge plate protrusion 122. A first limiting point is used to abut against one end of one side of the large edge plate protrusion 111, and a second limiting point is used to abut against the other end of one side of the large edge plate protrusion 111.

[0040] Specifically, it also includes a first connecting pin 12 and a second connecting pin 13. Correspondingly, the chassis 1 is provided with a first connecting hole and a second connecting hole. The first connecting pin 12 passes through the first connecting hole and connects to the machine tool, and the second connecting pin 13 passes through the second connecting hole and connects to the machine tool.

[0041] Specifically, the first connecting pin 12 is a diamond-shaped pin, and the second connecting pin 13 is a cylindrical pin.

[0042] In a specific example, the first positioning surface abuts against the positioning surface A of the large edge plate protrusion 111, the second positioning surface abuts against the positioning surface C of the small edge plate protrusion 122, the third positioning point abuts against the positioning point D of the leaf back 140, the first limiting point abuts against the limiting point H at one end of one side of the large edge plate protrusion 111, and the second limiting point abuts against the limiting point L at the other end of one side of the large edge plate protrusion 111.

[0043] Based on the above technical solution, the positioning device includes a first positioning block 7, a second positioning block 8, a third positioning block 9, a first positioning pin 10, and a second positioning pin 11. The first positioning block 7, the third positioning block 9, and the second positioning block 8 are arranged sequentially at intervals. The first positioning block 7, the second positioning block 8, and the third positioning block 9 are all fixedly connected to the pad 2. The first positioning pin 10 and the second positioning pin 11 are respectively disposed at both ends of the first positioning block 7 and fixedly connected to the first positioning block 7. The top surface of the first positioning block 7 has the first positioning surface, the top surface of the second positioning block 8 has the second positioning surface, the side surface of the positioning block 9 has the third positioning point, the side wall of the first positioning pin 10 has the first limiting point, and the side wall of the second positioning pin 11 has the second limiting point.

[0044] By setting the first positioning block 7, the second positioning block 8, the third positioning block 9, the first positioning pin 10, and the second positioning pin 11, the installation position of the blade 100 can be quickly and accurately determined.

[0045] Specifically, the first positioning pin 10 abuts against one end of the large edge plate protrusion 111, and the second positioning pin 11 abuts against the other end of the small edge plate protrusion 122.

[0046] Specifically, the first locating pin 10 is designed with a process ball, which can precisely control the relative positions of each part and ensure the accuracy of processing.

[0047] Specifically, the third positioning block 9 is a cutting edge positioning block, and the corresponding position of the blade back 140 is tangent to the cutting edge surface.

[0048] In a specific example, the cutting edge width of the third positioning block 9 is 1mm, resulting in more precise positioning.

[0049] Based on the above technical solution, the clamping device includes a support and a pressure plate. One end of the support is connected to the chassis 1, one end of the pressure plate is detachably connected to the support, and the other end of the pressure plate abuts against the other end face of the blade large edge plate 110 and the blade small edge plate 120.

[0050] The clamping device is secured by a support and a pressure plate. The support is connected to the chassis 1. One end of the pressure plate is detachably connected to the support, and the other end abuts against the other end face of the blade large edge plate 110 and the blade small edge plate 120, thereby clamping and fixing the blade 100 and restricting the radial rotation and vertical movement of the blade 100.

[0051] Specifically, the other end of the pressure plate abuts against and presses against the other end face of the large edge plate protrusion 111 and the small edge plate protrusion 122.

[0052] Based on the above technical solution, a rib groove is provided in the middle of the other end face of the support, and one end of the pressure plate abuts against the rib groove; the support is also provided with a first sliding groove, there are two first sliding grooves, the two first sliding grooves are located on both sides of the rib groove, and the support is slidably connected to the chassis 1.

[0053] By setting rib grooves on the support, the pressure plate placed on the support can be guided; a first sliding groove is set on the support, so that the support and the chassis 1 are slidably connected, thereby adjusting the position of the support according to the actual size of the blade 100, thereby adjusting the pressure plate and clamping the blade 100, thus making it suitable for the processing of various guide blades and improving the versatility and flexibility of the fixture.

[0054] Specifically, a first fastening screw 22 is provided at one end of the pressure plate, and the pressure plate is detachably connected to the support through the first fastening screw 22.

[0055] Specifically, it also includes two second fastening screws 27, which are respectively disposed in two first sliding grooves.

[0056] Based on the above technical solution, the included angle between the pressure plate and the support is 45 degrees, and the support is also provided with a first support part 26, which abuts against the pressure plate.

[0057] By setting the included angle between the pressure plate and the support to 45 degrees, interference between the grinding wheel and the pressure plate during the grinding process is avoided, thus preventing the grinding work from being affected. A first support part 26 is provided on the support to support the pressure plate.

[0058] Specifically, after the blade 100 is clamped, the angle between the pressure plate and the support is 45 degrees.

[0059] Based on the above technical solution, there are two clamping devices, which are arranged on both sides of the pad 2.

[0060] The two clamping devices are respectively set to the first positioning block 7 and the second positioning block 8 and clamp the blade 100 at the corresponding positions, thereby completing the clamping and fixing of the blade.

[0061] Specifically, the support includes a first support 3 and a second support 4, and the pressure plate includes a first pressure plate 5 and a second pressure plate 6. The first support 3 and the second support 4 are disposed on both sides of the pad 2. One end of the first pressure plate 5 is fixedly connected to the first support 3, and the other end of the first pressure plate 5 abuts against one end face of the large edge plate protrusion 111. One end of the second pressure plate 6 is fixedly connected to the second support 4, and the other end of the second pressure plate 6 abuts against one end face of the small edge plate protrusion 122.

[0062] Specifically, the other end of the first pressure plate 5 and the second pressure plate 6 is arc-shaped, which can match the side wall of the blade's large and small edge plates, abutting against the corresponding position to prevent the blade from moving radially.

[0063] In a specific example, the second fastening screw 27 is loosened, and the first support 3 and the second support 4 are moved apart to allow space for the blade 100. The blade 100 is then placed on the fixture, and the lower end face of the large flange protrusion 111 abuts against the first positioning surface on the first positioning block 7, the lower end face of the small flange protrusion 122 abuts against the second positioning surface on the second positioning block 8, and the corresponding position of the blade back 140 abuts against the third positioning point on the third positioning block 9, and then loosened. The first fastening screw 22 is then used to adjust the positions of the first pressure plate 5 and the second pressure plate 6 by dragging the first support 3 and the second support 4. After adjusting to the appropriate position, the second fastening screw 27 is tightened and the first fastening screw 22 is tightened, so that the first pressure plate 5 presses against the upper end face of the small edge plate protrusion 122 and the second pressure plate 6 presses against the upper end face of the large edge plate protrusion 111, and ensures that the corresponding position of the blade back 140 abuts against the third positioning block 9, thereby limiting and fixing the blade 100.

[0064] Based on the above technical solution, the support device includes a third support 16, a support block, and an adjustment component. One end of the third support 16 is fixedly connected to the pad 2, and a second sliding groove is provided on the other end face of the third support 16. The support block is placed in the second sliding groove and slidably connected to the second sliding groove. A through groove is opened on the support block, and the adjustment component is disposed in the through groove. One end of the adjustment component is connected to the support block, and the other end of the adjustment component is connected to the third support 16.

[0065] By setting a second sliding groove on the third support 16, the support block can be changed and its position adjusted within the second sliding groove. By setting a through groove on the support block, it is convenient to set the adjustment component and adjust the relative position of the support block on the third support 16, thereby adaptably supporting and fixing the blade 100.

[0066] Specifically, there are two second slides, and the support blocks include a first support block 14 and a second support block 15. The first support block 14 and the second support block 15 are respectively placed in the two second slides. One end of the first support block 14 abuts against one end of the large edge plate 110 of the blade in the direction of the blade basin 130, and one end of the second support block 15 abuts against one end of the small edge plate 120 of the blade in the direction of the blade basin 130.

[0067] Specifically, one end of the second support block 15 and the inner circular boss 121 of the small edge plate abut against each other at the corresponding position on the blade small edge plate 120.

[0068] In a specific example, one end of the first support block 14 abuts against the support point G of the blade major edge plate 110, and one end of the second support block 15 abuts against the support point E of the blade minor edge plate 120.

[0069] Based on the above technical solution, the adjustment assembly includes a first pull pin 18, a spring 24, a first fixing pin 25, and a first adjusting bolt 23. One end of the first pull pin 18 passes through the through groove and is fixedly connected to one end of the spring 24. The first fixing pin 25 is located on the extension line of the first pull pin 18 and is fixedly connected to the third support 16. The other end of the spring 24 is fixedly connected to the first fixing pin 25. The other end of the first pull pin 18 is fixedly connected to the support block. The first adjusting bolt 23 passes through the through groove and is detachably connected to the third support 16.

[0070] When the first adjusting bolt 23 is turned and loosened, one end of the first pull pin 18 is pulled, which in turn pulls the support block to slide in the second slide groove. At this time, the spring 24 is stretched, the first pull pin 18 is released, and the spring 24 returns to its original position under the action of the elastic force, so that the spring 24 drives the support block to move towards the blade 100. When one end of the support block abuts against the blade 100 in the direction of the blade head 130, the first adjusting bolt 23 is tightened, thereby completing the support and fixation of the blade 100 in the direction of the blade head 130.

[0071] Based on the above technical solution, a rotary clamping device is also included. The rotary clamping device is disposed in the middle of the pad 2. One end of the rotary clamping device is fixedly connected to the pad 2, and the other end of the rotary clamping device abuts against the inner sidewall of the blade edge plate 110.

[0072] By setting up a rotary clamping device, one end of the rotary clamping device is fixedly connected to the pad 2, and the other end of the rotary clamping device abuts against the inner side wall of the blade edge plate 110, further clamping the blade 100, making the overall clamping of the blade 100 more stable, which is conducive to the smooth progress of grinding work.

[0073] Based on the above technical solution, the rotary clamping device includes a fourth support 17, a rotary pin 20, a pressure hook 19, and a screw 21. A first groove is formed on the pad 2, and the fourth support 17 is placed in the first groove. A second groove is formed on the fourth support 17, and the pressure hook 19 is placed in the second groove and rotatably connected to the fourth support 17 through the rotary pin 20. A through hole is formed on one side of the pad 2, and the through hole communicates with the first groove. The screw 21 passes through the through hole, and one end of the screw 21 abuts against one end of the pressure hook 19. The other end of the pressure hook 19 abuts against the inner sidewall of the blade edge plate 110.

[0074] By screwing in the screw 21, one end of the screw 21 abuts against the hook 19, thereby causing the other end of the hook 19 to abut against the inner side of the blade edge plate 110, thus fixing the blade 100.

[0075] Specifically, the pressure hook 19 and the second groove are fitted with a gap.

[0076] This fixture, through optimized structural design, achieves precise positioning and clamping of the blade 100 within a limited space, ensuring the overall stability of the blade 100 during machining. This stability is maintained during grinding, preventing movement and deformation of the blade 100 and improving machining quality. Furthermore, the clamping and support devices are adjustable, making it suitable for machining various guide blades and enhancing the fixture's versatility and flexibility.

[0077] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying 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, and therefore should not be construed as a limitation of this utility model.

[0078] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0079] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0080] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0082] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A grinding fixture for guide vanes, characterized in that, include: A chassis (1) for connecting to a machine tool; Pad (2), the pad (2) is disposed in the middle of the chassis (1) and fixedly connected to the chassis (1); A positioning device is disposed at one end of the pad (2) and fixedly connected to the pad (2). The positioning device has a first positioning surface, a second positioning surface, a third positioning point, a first limiting point, and a second limiting point. The first positioning surface is used to abut against one end face of the blade major edge plate (110), the second positioning surface is used to abut against one end face of the blade minor edge plate (120), the third positioning point abuts against the back of the blade (140), the first limiting point abuts against one end of one side of the blade major edge plate (110), and the second limiting point abuts against the other end of one side of the blade major edge plate (110). A clamping device, one end of which is fixedly connected to the chassis (1), and the other end of which is used to clamp the blade large edge plate (110) and the blade small edge plate (120) at the other end face; A support device is provided at the other end of the pad (2) and is fixedly connected to the pad (2).

2. The guide vane grinding fixture according to claim 1, characterized in that, The positioning device includes a first positioning block (7), a second positioning block (8), a third positioning block (9), a first positioning pin (10), and a second positioning pin (11). The first positioning block (7), the third positioning block (9), and the second positioning block (8) are arranged at intervals in sequence. The first positioning block (7), the second positioning block (8), and the third positioning block (9) are all fixedly connected to the pad (2). The first positioning pin (10) and the second positioning pin (11) are respectively disposed at both ends of the first positioning block (7) and fixedly connected to the first positioning block (7). The top surface of the first positioning block (7) has the first positioning surface, the top surface of the second positioning block (8) has the second positioning surface, the side surface of the positioning block (9) has the third positioning point, the side wall of the first positioning pin (10) has the first limiting point, and the side wall of the second positioning pin (11) has the second limiting point.

3. The guide vane grinding fixture according to claim 1, characterized in that, The clamping device includes a support and a pressure plate. One end of the support is connected to the chassis (1), one end of the pressure plate is detachably connected to the support, and the other end of the pressure plate abuts against the other end faces of the blade large edge plate (110) and the blade small edge plate (120).

4. The guide vane grinding fixture according to claim 3, characterized in that, A rib groove is provided in the middle of the other end face of the support, and one end of the pressure plate abuts against the rib groove; the support is also provided with a first sliding groove, there are two first sliding grooves, the two first sliding grooves are located on both sides of the rib groove, and the support is slidably connected to the chassis (1).

5. The guide vane grinding fixture according to claim 4, characterized in that, The angle between the pressure plate and the support is 45 degrees. The support is also provided with a first support part (26), which abuts against the pressure plate.

6. A guide vane grinding fixture according to any one of claims 1-5, characterized in that, There are two clamping devices, which are located on both sides of the pad (2).

7. The guide vane grinding fixture according to claim 1, characterized in that, The support device includes a third support (16), a support block, and an adjustment component. One end of the third support (16) is fixedly connected to the pad (2), and a second sliding groove is provided on the other end face of the third support (16). The support block is placed in the second sliding groove and slidably connected to the second sliding groove. A through groove is provided on the support block, and the adjustment component is provided in the through groove. One end of the adjustment component is connected to the support block, and the other end of the adjustment component is connected to the third support (16).

8. The guide vane grinding fixture according to claim 7, characterized in that, The adjustment assembly includes a first pull pin (18), a spring (24), a first fixing pin (25), and a first adjusting bolt (23). One end of the first pull pin (18) passes through the through groove and is fixedly connected to one end of the spring (24). The first fixing pin is located on the extension line of the first pull pin (18) and is fixedly connected to the third support (16). The other end of the spring (24) is fixedly connected to the first fixing pin (25). The other end of the first pull pin (18) is fixedly connected to the support block. The first adjusting bolt (23) passes through the through groove and is detachably connected to the third support (16).

9. The guide vane grinding fixture according to claim 1, characterized in that, It also includes a rotary clamping device, which is located in the middle of the pad (2). One end of the rotary clamping device is fixedly connected to the pad (2), and the other end of the rotary clamping device abuts against the inner sidewall of the blade edge plate (110).

10. A guide vane grinding fixture according to claim 9, characterized in that, The rotary clamping device includes a fourth support (17), a rotary pin (20), a pressure hook (19), and a screw (21). A first groove is provided on the pad (2), and the fourth support (17) is placed in the first groove. A second groove is provided on the fourth support (17), and the pressure hook (19) is placed in the second groove and is rotatably connected to the fourth support (17) through the rotary pin (20). A through hole is provided on one side of the pad (2), and the through hole communicates with the first groove. The screw (21) passes through the through hole, and one end of the screw (21) abuts against one end of the pressure hook (19). The other end of the pressure hook (19) abuts against the inner sidewall of the blade edge plate (110).

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