A turbine blade tenon grinding positioning device and positioning method

Abstract

The application discloses a turbine blade tenon tooth grinding positioning device and a positioning method, and belongs to the field of turbine blade machining. The device comprises a supporting assembly, a mounting seat is fixedly arranged on a positioning base, a fixed clamping seat is fixedly arranged on the mounting seat, one end of a movable clamping seat is arranged on the fixed clamping seat, the other end of the movable clamping seat is connected to the fixed clamping seat through a fastener, a first positioning surface is arranged on the fixed clamping seat, a second positioning surface is arranged on the movable clamping seat, a turbine blade is clamped between the first positioning surface and the second positioning surface, a protection groove is arranged on each of the first positioning surface and the second positioning surface, the bottom of the protection groove is in gap cooperation with the tip of a convex rib on the turbine blade, and the supporting assembly is in cooperation with the turbine blade. The height of the turbine blade is adjusted through the supporting assembly, the turbine blade can be quickly fixed between the fixed clamping seat and the movable clamping seat through the fastener, and the turbine blade can also be quickly disassembled, so that the machining efficiency of the turbine blade is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of turbine blade processing, and in particular to a turbine blade tenon grinding positioning device and positioning method. Background Technology

[0002] Turbine blades are high-precision parts, so they need to be precisely clamped and positioned before processing. However, the clamping and positioning devices in the existing technology are complex in structure and operation, which makes the turbine blade assembly and disassembly process take more time, resulting in low processing efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a turbine blade tenon grinding positioning device and positioning method.

[0004] The objective of this invention is achieved through the following technical solution: A turbine blade tenon grinding positioning device includes a positioning base, a mounting base, a fixed clamping base, a movable clamping base, and a support assembly. The mounting base is fixedly mounted on the positioning base, and the fixed clamping base is fixedly mounted on the mounting base. One end of the movable clamping base is hinged to one end of the fixed clamping base, and the other end of the movable clamping base is connected to the other end of the fixed clamping base by a fastener. The fixed clamping base has a first positioning surface that mates with one side of the turbine blade, and the movable clamping base has a second positioning surface that mates with the other side of the turbine blade. Both the first and second positioning surfaces have a first positioning protrusion and a second positioning protrusion. The first positioning protrusion mates with a first positioning groove on the turbine blade, and the second positioning protrusion mates with a second positioning groove on the turbine blade. Both the first and second positioning surfaces have a protective groove, and the bottom of the protective groove has a clearance fit with the tip of a protruding ridge on the turbine blade. The support assembly is fixedly mounted on the positioning base and mates with the lower part of the turbine blade.

[0005] Furthermore, the support assembly includes a support base, a guide sleeve, a mounting block, a sliding rod, a limiting block, a top rod, and an adjusting wheel. The support base is fixedly mounted on the positioning base. The lower end of the guide sleeve is fixedly mounted on the support base. A guide hole is provided in the upper end of the guide sleeve. A clearance hole communicating with the guide hole is provided at the bottom of the guide hole. The mounting block is slidably mounted in the guide hole and does not rotate within the guide hole. The lower end of the mounting block is fixedly connected to the upper end of the sliding rod. The lower end of the sliding rod is slidably mounted in the clearance hole. The limiting block is fixedly mounted in the guide hole. A sliding through hole cooperating with the sliding rod is provided on the limiting block. The adjusting wheel is located between the limiting block and the bottom of the guide hole, and the adjusting wheel is threadedly engaged with the sliding rod. An operating window cooperating with the adjusting wheel is provided on the side wall of the guide sleeve. The top rod is fixedly mounted on the mounting block and cooperates with the turbine blade.

[0006] Furthermore, the support assembly also includes a drive shaft, which is rotatably mounted on the guide sleeve. A threaded tooth is fixedly provided on the middle part of the drive shaft, and a transmission tooth that mates with the threaded tooth is provided on the outer wall of the adjusting wheel. The axis of the drive shaft is perpendicular to the axis of the sliding rod.

[0007] Furthermore, the upper end of the mounting block is provided with a mounting hole, the inner wall of the mounting hole is provided with an annular groove, and a C-shaped spring piece is vertically arranged in the annular groove, the spring piece engaging with the outer wall of the top rod.

[0008] Furthermore, a spherical end that mates with the turbine blade is fixedly provided on the upper end of the push rod.

[0009] Furthermore, an upper limit ear is fixedly provided on the upper part of the fixed clamping seat, and a lower limit ear is fixedly provided on the upper part of the fixed clamping seat. A limit rotating rod is rotatably provided between the upper limit ear and the lower limit ear. A limit rotating block is rotatably provided on the limit rotating rod. The limit rotating block is fixedly connected to the movable clamping seat. The upper surface of the limit rotating block is in contact with the lower surface of the upper limit ear, and the lower surface of the limit rotating block is in contact with the upper surface of the lower limit ear.

[0010] Furthermore, the fixed clamping seat is provided with a first horizontal plane, the movable clamping seat is provided with a second horizontal plane, the first horizontal plane and the second horizontal plane are on the same plane, the mounting seat is provided with a third horizontal plane, the third horizontal plane is not higher than the first horizontal plane, the upper plane of the turbine blade is parallel to the first horizontal plane, and the upper surface of the turbine blade is higher than the first horizontal plane.

[0011] Furthermore, both the first positioning protrusion and the second positioning protrusion are provided with hydraulic chambers. Multiple main channels communicating with the hydraulic chambers are provided on the middle of the first positioning protrusion and the second positioning protrusion. A main limiting push rod is slidably and sealed in the main channel. Multiple secondary channels communicating with the hydraulic chambers are provided on both sides of the first positioning protrusion and the second positioning protrusion. A secondary limiting push rod is slidably and sealed in the secondary channel. A chamber cover plate is sealed on the hydraulic chamber.

[0012] Furthermore, a limit plate is provided inside the hydraulic cavity, and a hydraulic balance hole is provided on the limit plate. The ends of the main limit push rod and the auxiliary limit push rod cooperate with the limit plate.

[0013] A method for positioning turbine blade tenons, using a turbine blade tenon grinding and positioning device, the positioning method includes the following steps: S1: Loosen the fastener and open the movable clamping seat from the fixed clamping seat; S2: Place the turbine blade between the moving clamping seat and the fixed clamping seat, and control the fastener so that both the moving clamping seat and the fixed clamping seat are in contact with the turbine blade but do not clamp the turbine blade; S3: Control the turbine blade to move up and down between the moving clamping seat and the fixed clamping seat, so that the lower surface of the turbine blade abuts against the spherical end on the push rod; S4: By rotating the adjusting wheel, the adjusting wheel drives the sliding rod to move up and down, the mounting block on the sliding rod drives the top rod to move up and down, and the top rod adjusts the up and down position of the turbine blade through the spherical end; S5: Control the fastener again to bring the movable clamping seat closer to the fixed clamping seat, and the first positioning protrusion and the second positioning protrusion on the movable clamping seat and the fixed clamping seat press into the first positioning groove and the second positioning groove on the turbine blade respectively; S6: The turbine blade is machined, the fasteners are loosened after machining, and then the turbine blade is removed between the driven clamping seat and the fixed clamping seat.

[0014] The beneficial effects of this invention are: 1) In this technology, the turbine blade height position is precisely adjusted by the support component, and the turbine blade can be quickly fixed between the fixed clamping seat and the moving clamping seat by tightening and loosening the fasteners, or the turbine blade can be quickly removed from between the fixed clamping seat and the moving clamping seat, which effectively improves the processing efficiency of the turbine blade.

[0015] 2) In this technology, multiple main limit push rods and secondary limit push rods are set on the positioning protrusion, which can press evenly on the turbine blade, so that the turbine blade is evenly stressed, and further prevent the turbine blade from being damaged during the fixing process. Attached Figure Description

[0016] Figure 1 This is the three-dimensional connection structure of the positioning device. Figure 1 ; Figure 2 This is the three-dimensional connection structure of the positioning device. Figure 2 ; Figure 3 A diagram showing the connection structure for fixing turbine blades using a fixed clamping seat and a movable clamping seat; Figure 4 Diagram of the internal connection structure of the supporting components; Figure 5 for Figure 4 Enlarged connection structure diagram at point A; Figure 6 for Figure 4 Enlarged connection structure diagram at point B; Figure 7 Diagram showing the working structure of the main limit push rod and the secondary limit push rod; Figure 8 for Figure 7 Enlarged connection structure diagram at point C; In the diagram, 1-positioning base, 2-mounting seat, 3-fixed clamping seat, 4-moving clamping seat, 5-fastener, 6-turbine blade, 7-first positioning surface, 8-second positioning surface, 9-first positioning protrusion, 10-second positioning protrusion, 11-first positioning groove, 12-second positioning groove, 13-protective groove, 14-protruding ridge, 15-support seat, 16-guide sleeve, 17-mounting block, 18-sliding rod, 19-limiting block, 20-top rod, 21-adjusting wheel, 22-guide hole, 23-clearance hole, 24-sliding through hole, 25-drive shaft, 26-threaded tooth, 27-transmission tooth, 28-mounting hole, 29-annular groove, 30-spring piece. 31-Spherical end, 32-Upper limit ear, 33-Lower limit ear, 34-Limiting rotating rod, 35-Limiting rotating block, 36-First horizontal plane, 37-Second horizontal plane, 38-Third horizontal plane, 39-Hydraulic cavity, 40-Main channel, 41-Main limit push rod, 42-Secondary channel, 43-Secondary limit push rod, 44-Cavity cover plate, 45-Limiting clamping plate, 46-Hydraulic balance hole. Detailed Implementation

[0017] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] See Figures 1-8 The present invention provides a technical solution: A turbine blade tenon grinding positioning device includes a positioning base 1, a mounting base 2, a fixed clamping seat 3, a movable clamping seat 4, and a support assembly. The mounting base 2 is fixedly mounted on the positioning base 1, the fixed clamping seat 3 is fixedly mounted on the mounting base 2, one end of the movable clamping seat 4 is hinged to one end of the fixed clamping seat 3, and the other end of the movable clamping seat 4 is connected to the other end of the fixed clamping seat 3 by a fastener 5. The fixed clamping seat 3 is provided with a first positioning surface 7 that mates with one side of the turbine blade 6, and the movable clamping seat 4 is provided with a positioning surface 7 that mates with the other side of the turbine blade 6. The first positioning surface 7 and the second positioning surface 8 are provided with a first positioning protrusion 9 and a second positioning protrusion 10. The first positioning protrusion 9 cooperates with the first positioning groove 11 on the turbine blade 6, and the second positioning protrusion 10 cooperates with the second positioning groove 12 on the turbine blade 6. The first positioning surface 7 and the second positioning surface 8 are provided with a protective groove 13. The bottom of the protective groove 13 is in clearance cooperation with the tip of the protrusion 14 on the turbine blade 6. The support assembly is fixedly mounted on the positioning base 1 and cooperates with the lower part of the turbine blade 6. The positioning base 1 is used to install the support assembly and the mounting base 2, both of which are fixed with bolts. The support assembly rests on the lower surface of the turbine blade 6 and is used to adjust the height of the turbine blade 6. The mounting base 2 is used to install the fixed clamping seat 3 and is fixed with bolts. A movable clamping seat 4 is installed on the fixed clamping seat 3. The fixed clamping seat 3 is fixed to the mounting base 2 and does not move. The movable clamping seat 4 is hinged to the fixed clamping seat 3, so that the fixed clamping seat 3 and the movable clamping seat 4 are connected as a whole for easy handling. The fastener 5 is a bolt in the prior art. The movable clamping seat 4 is provided with a through hole that mates with the fastener 5. The fixed clamping seat 3 and the fastener 5 are threaded together. In order to better fix the turbine blade 6 between the fixed clamping seat 3 and the movable clamping seat 4, the first positioning surface 7 and the second positioning surface 8 do not contact each other. This prevents the turbine blade 6 from being loose after installation if the first positioning surface 7 and the second positioning surface 8 come into contact. A first positioning protrusion 9 and a second positioning protrusion 10 are provided on the first positioning surface 7 and the second positioning surface 8, respectively. A first positioning groove 11 and a second positioning groove 12 are provided on both sides of the turbine blade 6. The first positioning protrusion 9 on both sides rests in the two first positioning grooves 11, with the tip of the first positioning protrusion 9 resting in the recess of the first positioning groove 11; the second positioning protrusion 10 on both sides rests in the two second positioning grooves 12, with the tip of the second positioning protrusion 10 resting in the recess of the second positioning groove 12. Two sets of protective grooves 13 are provided on the first positioning surface 7 and the second positioning surface 8. The protective grooves 13 cooperate with the protruding ridges 14 on the turbine blade 6, and the tips of the protruding ridges 14 do not contact the bottom of the protective grooves 13, thus protecting the protruding ridges 14 on the turbine blade 6.

[0019] In some embodiments, the support assembly includes a support base 15, a guide sleeve 16, a mounting block 17, a sliding rod 18, a limiting block 19, a top rod 20, and an adjusting wheel 21. The support base 15 is fixedly mounted on the positioning base 1. The lower end of the guide sleeve 16 is fixedly mounted on the support base 15. A guide hole 22 is provided in the upper end of the guide sleeve 16. An avoidance hole 23 communicating with the guide hole 22 is provided at the bottom of the guide hole 22. The mounting block 17 is slidably mounted in the guide hole 22 and does not rotate within the guide hole 22. The lower end is fixedly connected to the upper end of the sliding rod 18. The lower end of the sliding rod 18 is slidably disposed in the clearance hole 23. A limit block 19 is fixedly disposed in the guide hole 22. A sliding through hole 24 that cooperates with the sliding rod 18 is provided on the limit block 19. An adjusting wheel 21 is disposed between the bottom of the limit block 19 and the guide hole 22. The adjusting wheel 21 and the sliding rod 18 are threadedly engaged. An operating window that cooperates with the adjusting wheel 21 is provided on the side wall of the guide sleeve 16. The top rod 20 is fixedly disposed on the mounting block 17 and cooperates with the turbine blade 6. The support base 15 is fixed to the positioning base 1 by bolts, and the guide sleeve 16 is welded to the support base 15. The mounting block 17 is slidably installed in the guide hole 22 in the guide sleeve 16. When the cross-section of the mounting block 17 is circular, the mounting block 17 and the sliding rod 18 are not coaxial. When the cross-section of the mounting block 17 is other shapes, it can be ensured that it does not rotate in the guide hole 22. The sliding rod 18 is a lead screw in the prior art. The adjusting wheel 21 is threadedly engaged with the sliding rod 18. The function of the limiting block 19 is to limit the adjusting wheel 21 and prevent the adjusting wheel 21 from moving up and down in the guide sleeve 16. By rotating the adjusting wheel 21, the sliding rod 18 moves up and down in the guide sleeve 16, thereby driving the mounting block 17 to move up and down. A top rod 20 is installed on the mounting block 17. The top rod 20 pushes against the turbine blade 6 to adjust the up and down position of the turbine blade 6. An avoidance hole 23 is provided to facilitate the movement of the lower end of the sliding rod 18. The bottom of the guide hole 22 cooperates with the limiting block 19 to limit the adjusting wheel 21.

[0020] In some embodiments, the support assembly further includes a drive shaft 25, which is rotatably mounted on the guide sleeve 16. A threaded tooth 26 is fixedly provided on the middle of the drive shaft 25, and a transmission tooth 27 that engages with the threaded tooth 26 is provided on the outer wall of the adjusting wheel 21. The axis of the drive shaft 25 is perpendicular to the axis of the sliding rod 18. The transmission tooth 27 on the outer wall of the adjusting wheel 21 forms a turbine structure, and the threaded tooth 26 on the drive shaft 25 forms a worm gear structure. Through the use of the worm gear structure, the adjusting wheel 21 can be driven by rotating the drive shaft 25. The adjusting wheel 21 cannot rotate in the opposite direction to drive the drive shaft 25. Therefore, after adjustment by the drive shaft 25, the top position of the push rod 20 will not change. The drive shaft 25 is rotatably mounted on the guide sleeve 16, with one end extending to the outside of the guide sleeve 16, which facilitates control of the rotation of the drive shaft 25.

[0021] In some embodiments, the upper end of the mounting block 17 is provided with a mounting hole 28, and the inner wall of the mounting hole 28 is provided with an annular groove 29. A C-shaped spring piece 30 is vertically arranged in the annular groove 29, and the spring piece 30 mates with the outer wall of the push rod 20. As the number of processing cycles increases, the upper end of the push rod 20 will be worn. Therefore, the mounting hole 28 is provided to facilitate the installation or removal of the push rod 20 for replacement. The annular groove 29 is provided to install the spring piece 30. The function of the spring piece 30 is to fix the push rod 20 in the mounting hole 28 by elastic force, preventing the push rod 20 from separating and falling off during the positioning process.

[0022] In some embodiments, a spherical end 31 that mates with the turbine blade 6 is fixedly provided on the upper end of the push rod 20. The spherical end 31 serves to protect the turbine blade 6 and prevent it from being scratched by the push rod 20.

[0023] In some embodiments, an upper limit ear 32 is fixedly provided on the upper part of the fixed clamping seat 3, and a lower limit ear 33 is fixedly provided on the upper part of the fixed clamping seat 3. A limiting rod 34 is rotatably provided between the upper limit ear 32 and the lower limit ear 33. A limiting rotating block 35 is rotatably provided on the limiting rod 34. The limiting rotating block 35 is fixedly connected to the movable clamping seat 4. The upper surface of the limiting rotating block 35 contacts the lower surface of the upper limit ear 32, and the lower surface of the limiting rotating block 35 contacts the upper surface of the lower limit ear 33. The upper limit ear 32 and the lower limit ear 33 work together to limit the limiting rotating block 35. The upper and lower ends of the limiting rod 34 are fixed to the upper limit ear 32 and the lower limit ear 33, respectively. The limiting rotating block 35 is rotatably provided on the limiting rod 34 and cannot move up and down along the axial direction of the limiting rod 34. To reduce friction, an end face bearing, as used in the prior art, is provided between the lower limit ear 33 and the limiting rotating block 35.

[0024] In some embodiments, a first horizontal surface 36 is provided on the fixed clamping seat 3, and a second horizontal surface 37 is provided on the movable clamping seat 4. The first horizontal surface 36 and the second horizontal surface 37 are on the same plane. A third horizontal surface 38 is provided on the mounting base 2. The third horizontal surface 38 is not higher than the first horizontal surface 36. The upper surface of the turbine blade 6 is parallel to the first horizontal surface 36, and the upper surface of the turbine blade 6 is higher than the first horizontal surface 36. During the machining of the turbine blade 6, in order to prevent the machining tool from touching the fixed clamping seat 3 or the movable clamping seat 4, the first horizontal surface 36 and the second horizontal surface 37 are both horizontally arranged, and the upper surface of the turbine blade 6 is higher than the first horizontal surface 36 and the second horizontal surface 37. The third horizontal surface 38 on the mounting base 2 does not need to be higher than the first horizontal surface 36.

[0025] In some embodiments, a hydraulic cavity 39 is provided in both the first positioning protrusion 9 and the second positioning protrusion 10. Multiple main channels 40 communicating with the hydraulic cavity 39 are provided in the middle of the first positioning protrusion 9 and the second positioning protrusion 10. A main limiting push rod 41 is slidably and sealed in the main channel 40. Multiple secondary channels 42 communicating with the hydraulic cavity 39 are provided on both sides of the first positioning protrusion 9 and the second positioning protrusion 10. A secondary limiting push rod 43 is slidably and sealed in the secondary channel 42. A cavity cover plate 44 is slidably and sealed on the hydraulic cavity 39. Hydraulic oil is injected into the hydraulic chamber 39, but it cannot completely fill the entire chamber. The hydraulic oil in the hydraulic chamber 39 pushes the main limit push rod 41 and the secondary limit push rod 43 to move. The main limit push rod 41 rests on the bottom of the first positioning groove 11 or the second positioning groove 12, and the secondary limit push rod 43 rests on both sides of the first positioning groove 11 or the second positioning groove 12. The fact that the hydraulic chamber 39 cannot be completely filled with hydraulic oil allows all the main limit push rods 41 and the secondary limit push rods 43 to have floating space. Multiple main limit push rods 41 and secondary limit push rods 43 are evenly pressed on the turbine blade 6, so that the turbine blade 6 is evenly stressed, further preventing damage to the turbine blade 6 during the fixing process. The ends of the secondary limit push rods 43 and the main limit push rods 41 are spherical, which further protects the turbine blade 6. Both the main channel 40 and the secondary channel 42 are stepped channels, and both the main limit push rod 41 and the secondary limit push rod 43 are stepped rods. This prevents the main limit push rod 41 and the secondary limit push rod 43 from disengaging. Both the main limit push rod 41 and the secondary limit push rod 43 are provided with sealing grooves, and sealing rings are provided in the sealing grooves. The sealing rings are respectively sealed and fitted with the inner walls of the main channel 40 and the secondary channel 42.

[0026] In some embodiments, a limiting plate 45 is provided within the hydraulic chamber 39. The limiting plate 45 has a hydraulic balance hole 46, and the ends of the main limiting push rod 41 and the secondary limiting push rod 43 engage with the limiting plate 45. The limiting plate 45 limits the main limiting push rod 41 and the secondary limiting push rod 43, preventing the main limiting push rod 41 from disengaging from the main channel 40 and preventing the secondary limiting push rod 43 from disengaging from the secondary channel 42. The limiting plate 45 has a C-shaped cross-section, and the hydraulic balance hole 46 facilitates the flow of hydraulic oil.

[0027] A method for positioning turbine blade tenons, using a turbine blade tenon grinding and positioning device, includes the following steps: (1) Loosen the fastener 5 and open the movable clamping seat 4 from the fixed clamping seat 3; (2) Place the turbine blade 6 between the moving clamping seat 4 and the fixed clamping seat 3, and control the fastener 5 so that both the moving clamping seat 4 and the fixed clamping seat 3 are in contact with the turbine blade 6 but do not clamp the turbine blade 6. (3) Control the turbine blade 6 to move up and down between the moving clamping seat 4 and the fixed clamping seat 3, so that the lower surface of the turbine blade 6 abuts against the spherical end 31 on the push rod 20; (4) By rotating the adjusting wheel 21, the adjusting wheel 21 drives the sliding rod 18 to move up and down. The mounting block 17 on the sliding rod 18 drives the top rod 20 to move up and down. The top rod 20 adjusts the up and down position of the turbine blade 6 through the spherical end 31. (5) Control the fastener 5 again to bring the moving clamping seat 4 close to the fixed clamping seat 3. The first positioning protrusion 9 and the second positioning protrusion 10 on the moving clamping seat 4 and the fixed clamping seat 3 respectively press into the first positioning groove 11 and the second positioning groove 12 on the turbine blade 6. (6) The turbine blade 6 is processed. After processing, the fastener 5 is loosened, and then the turbine blade 6 is removed between the driven clamping seat 4 and the fixed clamping seat 3.

[0028] In the description of this invention, it should be understood that the terms "upper", "lower", "bottom", "one end", "top", "middle", "other end", "coaxial", "one side", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention 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 invention.

[0029] In this invention, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "fix", "hinged", 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 connection 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 invention according to the specific circumstances.

[0030] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A turbine blade tenon grinding and positioning device, characterized in that: The device includes a positioning base (1), a mounting base (2), a fixed clamping seat (3), a movable clamping seat (4), and a support assembly. The mounting base (2) is fixedly mounted on the positioning base (1), and the fixed clamping seat (3) is fixedly mounted on the mounting base (2). One end of the movable clamping seat (4) is hinged to one end of the fixed clamping seat (3), and the other end of the movable clamping seat (4) is connected to the other end of the fixed clamping seat (3) by a fastener (5). The fixed clamping seat (3) is provided with a first positioning surface (7) that mates with one side of the turbine blade (6), and the movable clamping seat (4) is provided with a second positioning surface (8) that mates with the other side of the turbine blade (6). The first positioning surface (7) and the second positioning surface (8) are provided with a first positioning protrusion (9) and a second positioning protrusion (10). The first positioning protrusion (9) cooperates with the first positioning groove (11) on the turbine blade (6), and the second positioning protrusion (10) cooperates with the second positioning groove (12) on the turbine blade (6). The first positioning surface (7) and the second positioning surface (8) are provided with a protective groove (13). The bottom of the protective groove (13) is in clearance cooperation with the tip of the protrusion (14) on the turbine blade (6). The support assembly is fixedly installed on the positioning base (1) and cooperates with the lower part of the turbine blade (6).

2. The turbine blade tenon grinding and positioning device according to claim 1, characterized in that: The support assembly includes a support base (15), a guide sleeve (16), a mounting block (17), a sliding rod (18), a limiting block (19), a top rod (20), and an adjusting wheel (21). The support base (15) is fixedly mounted on the positioning base (1). The lower end of the guide sleeve (16) is fixedly mounted on the support base (15). A guide hole (22) is provided in the upper end of the guide sleeve (16). An clearance hole (23) communicating with the guide hole (22) is provided at the bottom of the guide hole (22). The mounting block (17) is slidably mounted in the guide hole (22) and does not rotate in the guide hole (22). The lower end of the mounting block (17) is connected to the sliding rod (18). The upper end of the rod (18) is fixedly connected, the lower end of the sliding rod (18) is slidably disposed in the clearance hole (23), the limiting block (19) is fixedly disposed in the guide hole (22), the limiting block (19) is provided with a sliding through hole (24) that cooperates with the sliding rod (18), the adjusting wheel (21) is disposed between the bottom of the limiting block (19) and the guide hole (22), and the adjusting wheel (21) is threadedly engaged with the sliding rod (18), the side wall of the guide sleeve (16) is provided with an operating window that cooperates with the adjusting wheel (21), and the top rod (20) is fixedly disposed on the mounting block (17) and cooperates with the turbine blade (6).

3. The turbine blade tenon grinding and positioning device according to claim 2, characterized in that: The support assembly also includes a drive shaft (25), which is rotatably mounted on the guide sleeve (16). A threaded tooth (26) is fixedly mounted on the middle part of the drive shaft (25), and a transmission tooth (27) that cooperates with the threaded tooth (26) is mounted on the outer wall of the adjusting wheel (21). The axis of the drive shaft (25) is perpendicular to the axis of the sliding rod (18).

4. A turbine blade tenon grinding and positioning device according to claim 2 or 3, characterized in that: The mounting block (17) has a mounting hole (28) at its upper end. The inner wall of the mounting hole (28) has an annular groove (29). A C-shaped spring piece (30) is vertically arranged in the annular groove (29). The spring piece (30) is engaged with the outer wall of the top rod (20).

5. A turbine blade tenon grinding and positioning device according to claim 2 or 3, characterized in that: The top rod (20) is fixedly provided with a spherical end (31) that cooperates with the turbine blade (6).

6. A turbine blade tenon grinding and positioning device according to any one of claims 1-3, characterized in that: The upper part of the fixed clamping seat (3) is fixedly provided with an upper limit ear (32) and the upper part of the fixed clamping seat (3) is fixedly provided with a lower limit ear (33). A limit rotating rod (34) is rotatably provided between the upper limit ear (32) and the lower limit ear (33). A limit rotating block (35) is rotatably provided on the limit rotating rod (34). The limit rotating block (35) is fixedly connected to the moving clamping seat (4). The upper surface of the limit rotating block (35) is in contact with the lower surface of the upper limit ear (32), and the lower surface of the limit rotating block (35) is in contact with the upper surface of the lower limit ear (33).

7. A turbine blade tenon grinding and positioning device according to any one of claims 1-3, characterized in that: The fixed clamping seat (3) is provided with a first horizontal surface (36), the movable clamping seat (4) is provided with a second horizontal surface (37), the first horizontal surface (36) and the second horizontal surface (37) are on the same plane, the mounting seat (2) is provided with a third horizontal surface (38), the third horizontal surface (38) is not higher than the first horizontal surface (36), the upper surface of the turbine blade (6) is parallel to the first horizontal surface (36), and the upper surface of the turbine blade (6) is higher than the first horizontal surface (36).

8. A turbine blade tenon grinding and positioning device according to any one of claims 1-3, characterized in that: Both the first positioning protrusion (9) and the second positioning protrusion (10) are provided with hydraulic chambers (39). Multiple main channels (40) communicating with the hydraulic chambers (39) are provided on the middle of the first positioning protrusion (9) and the second positioning protrusion (10). A main limiting push rod (41) is provided in the main channel (40) in a sealed sliding manner. Multiple secondary channels (42) communicating with the hydraulic chambers (39) are provided on both sides of the first positioning protrusion (9) and the second positioning protrusion (10). A secondary limiting push rod (43) is provided in the secondary channel (42) in a sealed sliding manner. A cavity cover plate (44) is provided on the hydraulic chamber (39).

9. The turbine blade tenon grinding and positioning device according to claim 8, characterized in that: A limiting plate (45) is provided inside the hydraulic chamber (39). A hydraulic balance hole (46) is provided on the limiting plate (45). The ends of the main limiting push rod (41) and the secondary limiting push rod (43) cooperate with the limiting plate (45).

10. A method for positioning the tenon teeth of a turbine blade, characterized in that: Using a turbine blade tenon grinding positioning device as described in any one of claims 1-9, the positioning method includes the following steps: S1: Loosen the fastener (5) and open the movable clamping seat (4) from the fixed clamping seat (3); S2: Place the turbine blade (6) between the moving clamping seat (4) and the fixed clamping seat (3), and control the fastener (5) so that both the moving clamping seat (4) and the fixed clamping seat (3) are in contact with the turbine blade (6) but do not clamp the turbine blade (6). S3: Control the turbine blade (6) to move up and down between the moving clamping seat (4) and the fixed clamping seat (3), so that the lower surface of the turbine blade (6) abuts against the spherical end (31) on the push rod (20); S4: By rotating the adjusting wheel (21), the adjusting wheel (21) drives the sliding rod (18) to move up and down. The mounting block (17) on the sliding rod (18) drives the top rod (20) to move up and down. The top rod (20) adjusts the up and down position of the turbine blade (6) through the spherical end (31). S5: Control the fastener (5) again so that the movable clamping seat (4) is close to the fixed clamping seat (3), and the first positioning protrusion (9) and the second positioning protrusion (10) on the movable clamping seat (4) and the fixed clamping seat (3) are respectively pressed into the first positioning groove (11) and the second positioning groove (12) on the turbine blade (6); S6: The turbine blade (6) is processed. After processing, the fastener (5) is loosened, and then the turbine blade (6) is removed between the driven clamping seat (4) and the fixed clamping seat (3).

Images