Thin and long gas turbine moving blade tenon tooth grinding clamp

Abstract

The utility model relates to the technical field of turbine moving blade machining, in particular to a thin and long type gas turbine moving blade tenon tooth grinding clamp. The grinding tool comprises a bottom plate, a clamping seat is fixed to the bottom plate, a vertically-through clamping cavity is formed in one side of the clamping seat, and turbine moving blades for tenon tooth grinding are clamped in the clamping cavity; a first blade body inner clamping block, a second blade body inner clamping block and a third blade body inner clamping block are sequentially arranged on the inner bottom end face of the clamping cavity from top to bottom, and the front ends of the first blade body inner clamping block, the second blade body inner clamping block and the third blade body inner clamping block stretch out of the inner bottom end face of the clamping cavity and make contact with the side face of the blade body in a matched mode. According to the utility model, the blade body and the tenon tooth part can be kept stable in the machining process of the tenon tooth of the thin and long turbine moving blade, and the blade machining quality is improved; according to the utility model, the tenon tooth part and the blade body are respectively clamped, and the positions of the clamping blocks can be freely adjusted, so that different clamping requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of turbine moving blade processing, in particular to a thin and long gas turbine moving blade tenon tooth grinding fixture. Background Art

[0002] Gas turbine rotor blades are important parts of aircraft engines. During the machining process of the rotor blades, the end faces of the tenon teeth of the blades need to be ground. It is very important to position and clamp the rotor blades before grinding, which directly affects the quality of the grinding of the tenon teeth of the rotor blades.

[0003] Among gas turbine blades, some blades have long blade bodies and thin thickness. If such blades are not clamped properly during processing, they are prone to processing deformation, which not only reduces the processing efficiency but also easily leads to quality problems. Utility Model Content

[0004] In view of the shortcomings of the above-mentioned existing production technology, the present application provides a thin and long gas turbine blade tenon grinding fixture, which can ensure that the blade body and the tenon portion remain stable during the processing of the thin and long turbine blade tenon, thereby improving the blade processing quality.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A thin and long gas turbine blade tenon grinding fixture comprises a bottom plate, a clamping seat is fixed on the bottom plate, a clamping cavity is provided on one side of the clamping seat, and a turbine blade for tenon grinding is clamped in the clamping cavity; a first blade body inner clamping block, a second blade body inner clamping block and a third blade body inner clamping block are arranged in sequence from top to bottom on the bottom end surface of the clamping cavity, and the front ends of the first blade body inner clamping block, the second blade body inner clamping block and the third blade body inner clamping block extend out of the bottom end surface of the clamping cavity and fit in contact with the blade body side surface; a fourth blade body inner clamping block, a fifth blade body inner clamping block and a sixth blade body inner clamping block are arranged in sequence from top to bottom on the inner side surface of the clamping cavity, and the front ends of the fourth blade body inner clamping block, the fifth blade body inner clamping block and the sixth blade body inner clamping block extend out of the inner side surface of the clamping cavity and fit in contact with the blade body side surface;

[0007] The first clamping plate, the second clamping plate and the third clamping plate are horizontally arranged on the side opening end of the clamping cavity, and the first clamping plate, the second clamping plate and the third clamping plate are distributed from top to bottom, and one end of the first clamping plate, the second clamping plate and the third clamping plate are rotatably connected together on the same rotating shaft A fourth blade body outer clamp is arranged, and the fourth blade body outer clamp can fit and contact the side surface of the blade body; a second blade body outer clamp is arranged on the second clamping plate facing the position of the second blade body inner clamp, and the second blade body outer clamp can fit and contact the side surface of the blade body; a fifth blade body outer clamp is arranged on the second clamping plate facing the position of the fifth blade body inner clamp, and the fifth blade body outer clamp can fit and contact the side surface of the blade body; a third blade body outer clamp is arranged on the third clamping plate facing the position of the third blade body inner clamp, and the third blade body outer clamp can fit and contact the side surface of the blade body; a sixth blade body outer clamp is arranged on the third clamping plate facing the position of the sixth blade body inner clamp, and the sixth blade body outer clamp can fit and contact the side surface of the blade body;

[0008] The first tenon inner clamp block, the second tenon inner clamp block and the third tenon inner clamp block are arranged at the top position of the bottom end surface in the clamping cavity, and one end of the first tenon inner clamp block, the second tenon inner clamp block and the third tenon inner clamp block are pressed tightly against the tenon side of the turbine moving blade. The first tenon outer clamp block, the second tenon outer clamp block and the third tenon outer clamp block are arranged at the top position of the first clamping plate facing the clamping cavity, and one end of the first tenon outer clamp block, the second tenon outer clamp block and the third tenon outer clamp block are pressed tightly against the tenon side of the turbine moving blade.

[0009] Furthermore, the rear end of the first blade inner clamp block is connected to one end of the first inner adjusting screw, the other end of the first inner adjusting screw is connected to the first inner adjusting plate by a thread, and the first inner adjusting plate is detachably connected to the clamping seat by a bolt, the rear end of the second blade inner clamp block is connected to one end of the second inner adjusting screw, the other end of the second inner adjusting screw is connected to the second inner adjusting plate by a thread, and the second inner adjusting plate is detachably connected to the clamping seat by a bolt, the rear end of the third blade inner clamp block is connected to one end of the third inner adjusting screw, the other end of the third inner adjusting screw is connected to the third inner adjusting plate by a thread, and the third inner adjusting plate is detachably connected to the clamping seat by a bolt. On the seat, the rear end of the fourth blade inner clamp is connected to one end of the fourth inner adjusting screw, the other end of the fourth inner adjusting screw is connected to the fourth inner adjusting plate through a thread, and the fourth inner adjusting plate is detachably connected to the clamping seat through bolts, the rear end of the fifth blade inner clamp is connected to one end of the fifth inner adjusting screw, the other end of the fifth inner adjusting screw is connected to the fifth inner adjusting plate through a thread, and the fifth inner adjusting plate is detachably connected to the clamping seat through bolts, the rear end of the sixth blade inner clamp is connected to one end of the sixth inner adjusting screw, the other end of the sixth inner adjusting screw is connected to the sixth inner adjusting plate through a thread, and the sixth inner adjusting plate is detachably connected to the clamping seat through bolts.

[0010] Furthermore, one end of the first blade outer clamp is connected to one end of the first outer adjusting screw, the first outer adjusting screw is connected to the first clamping plate by a thread, and the other end of the first outer adjusting screw extends out of the first clamping plate, a first limit plate is arranged on the upper end surface of the first blade outer clamp, and the first limit plate is detachably connected to the first clamping plate by a bolt, one end of the fourth blade outer clamp is connected to one end of the fourth outer adjusting screw, the fourth outer adjusting screw is connected to the first clamping plate by a thread, and the other end of the fourth outer adjusting screw extends out of the first clamping plate, one end of the second blade outer clamp is connected to one end of the second outer adjusting screw, the second outer adjusting screw is connected to the second clamping plate by a thread, and the other end of the second outer adjusting screw extends out of the second clamping plate, and a second limit plate is arranged on the upper end surface of the second blade outer clamp The second limit plate is detachably connected to the second clamping plate by bolts, one end of the fifth blade outer clamping block is connected to one end of the fifth outer adjusting screw, the fifth outer adjusting screw is connected to the second clamping plate by a thread, and the other end of the fifth outer adjusting screw extends out of the second clamping plate, one end of the third blade outer clamping block is connected to one end of the third outer adjusting screw, the third outer adjusting screw is connected to the third clamping plate by a thread, and the other end of the third outer adjusting screw extends out of the third clamping plate. A third limit plate is arranged on the upper end surface of the third blade outer clamping block, and the third limit plate is detachably connected to the third clamping plate by bolts, one end of the sixth blade outer clamping block is connected to one end of the sixth outer adjusting screw, the sixth outer adjusting screw is connected to the third clamping plate by a thread, and the other end of the sixth outer adjusting screw extends out of the third clamping plate.

[0011] Furthermore, the rear end of the first tenon tooth inner clamp block is connected to one end of the first tenon tooth adjusting screw, and the other end of the first tenon tooth adjusting screw is connected to the adjusting screw mounting plate through a thread, and the adjusting screw mounting plate is detachably connected to the clamping seat through a bolt, the rear end of the second tenon tooth inner clamp block is connected to one end of the second tenon tooth adjusting screw, and the other end of the second tenon tooth adjusting screw is connected to the adjusting screw mounting plate through a thread, the rear end of the third tenon tooth inner clamp block is connected to one end of the third tenon tooth adjusting screw, and the other end of the third tenon tooth adjusting screw is connected to the adjusting screw mounting plate through a thread, the rear end of the first tenon tooth outer clamp block is connected to one end of the fourth tenon tooth adjusting screw, and the other end of the fourth tenon tooth adjusting screw is connected to the adjusting screw mounting plate through a thread, the rear end of the second tenon tooth outer clamp block is connected to one end of the fifth tenon tooth adjusting screw, and the other end of the fifth tenon tooth adjusting screw is connected to the adjusting screw mounting plate through a thread, the rear end of the third tenon tooth outer clamp block is connected to one end of the sixth tenon tooth adjusting screw, and the other end of the sixth tenon tooth adjusting screw is connected to the adjusting screw mounting plate through a thread.

[0012] Furthermore, the upper end surface of the clamping seat is detachably connected to the first and second pressure plates of the L-shaped structure by bolts, and the first and second pressure plates are respectively located on the left and right sides of the clamping cavity. The first and second pressure plates can be pressed downwardly onto the upper end surface of the tenon tooth portion of the turbine blade.

[0013] Furthermore, the upper end surface of the clamping seat is detachably connected to the first positioning block and the second positioning block by bolts, and the front ends of the first positioning block and the second positioning block can be positioned to contact the tenon portion of the turbine blade. A third positioning block is arranged on the inner side surface of the clamping cavity, and the third positioning block can be positioned to contact the side surface of the blade body on the inner side surface of the clamping cavity of the turbine blade. The upper end surface of the clamping seat is detachably connected to the fourth positioning block by bolts, and the upper end of the fourth positioning block can be positioned to contact the lower end surface of the tenon portion of the turbine blade.

[0014] The beneficial effects of the utility model are as follows:

[0015] The utility model can ensure that the blade body and the tenon tooth portion remain stable during the tenon tooth processing of thin and long turbine moving blades, thereby improving the blade processing quality; the utility model clamps the tenon tooth portion and the blade body separately, and each clamping block can freely adjust the position to meet different clamping requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model.

[0017] Figure 2 This is a structural diagram of the clamping seat of the utility model from the front view.

[0018] Figure 3 This is a structural diagram of the clamping seat of the utility model from the back side.

[0019] Figure 4 This is a structural diagram of the first armor plate, the second armor plate and the third armor plate of the utility model.

[0020] Among them: 1. bottom plate; 2. clamping seat; 3. first clamping plate; 4. second clamping plate; 5. third clamping plate; 6. rotating shaft; 7. clamping cavity; 8. first blade inner clamping block; 9. second blade inner clamping block; 10. third blade inner clamping block; 11. fourth blade inner clamping block; 12. fifth blade inner clamping block; 13. sixth blade inner clamping block; 14. first blade outer clamping block; 15. second blade outer clamping block; 16. third blade outer clamping block; 17. The fourth blade body outer clamp; 18, the fifth blade body outer clamp; 19, the sixth blade body outer clamp; 20, the first inner adjustment plate; 21, the first inner adjustment screw; 22, the second inner adjustment plate; 23, the second inner adjustment screw; 24, the third inner adjustment plate; 25, the third inner adjustment screw; 26, the fourth inner adjustment plate; 27, the fourth inner adjustment screw; 28, the fifth inner adjustment plate; 29, the fifth inner adjustment screw; 30, the sixth inner adjustment plate; 31, the sixth Inner adjustment screw; 32, first limit plate; 33, second limit plate; 34, third limit plate; 35, first outer adjustment screw; 36, second outer adjustment screw; 37, third outer adjustment screw; 38, fourth outer adjustment screw; 39, fifth outer adjustment screw; 40, sixth outer adjustment screw; 41, first tenon inner clamp; 42, second tenon inner clamp; 43, third tenon inner clamp; 44, first tenon outer clamp; 45, second tenon inner clamp Outer clamping block; 46, third tenon outer clamping block; 47, first pressure plate; 48, second pressure plate; 49, first positioning block; 50, second positioning block; 51, third positioning block; 52, fourth positioning block; 53, first tenon adjusting screw; 54, second tenon adjusting screw; 55, third tenon adjusting screw; 56, fourth tenon adjusting screw; 57, fifth tenon adjusting screw; 58, sixth tenon adjusting screw; 59, adjusting screw mounting plate. DETAILED DESCRIPTION

[0021] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0022] like Figure 1 As shown, a thin and long gas turbine blade tenon grinding fixture includes a base plate 1, a clamping seat 2 is fixed on the base plate 1, a clamping cavity 7 that passes through from top to bottom is arranged on one side of the clamping seat 2, and the turbine blade that undergoes tenon grinding processing is clamped in the clamping cavity 7.

[0023] like Figure 2 and Figure 3As shown, the first blade body inner clamp block 8, the second blade body inner clamp block 9 and the third blade body inner clamp block 10 are arranged in sequence from top to bottom on the inner bottom end surface of the clamping cavity 7, and the front ends of the first blade body inner clamp block 8, the second blade body inner clamp block 9 and the third blade body inner clamp block 10 extend out of the inner bottom end surface of the clamping cavity 7 and fit in contact with the blade body side surface. The fourth blade body inner clamp block 11, the fifth blade body inner clamp block 12 and the sixth blade body inner clamp block 13 are arranged in sequence from top to bottom on the inner side surface of the clamping cavity 7, and the front ends of the fourth blade body inner clamp block 11, the fifth blade body inner clamp block 12 and the sixth blade body inner clamp block 13 extend out of the inner side surface of the clamping cavity 7 and fit in contact with the blade body side surface.

[0024] like Figure 2 and Figure 3 As shown, the rear end of the first blade inner clamp 8 is connected to one end of the first inner adjustment screw 21, the other end of the first inner adjustment screw 21 is connected to the first inner adjustment plate 20 by threading, and the first inner adjustment plate 20 is detachably connected to the clamping seat 2 by bolts. The rear end of the second blade inner clamp 9 is connected to one end of the second inner adjustment screw 23, the other end of the second inner adjustment screw 23 is connected to the second inner adjustment plate 22 by threading, and the second inner adjustment plate 22 is detachably connected to the clamping seat 2 by bolts. The rear end of the third blade inner clamp 10 is connected to one end of the third inner adjustment screw 25, the other end of the third inner adjustment screw 25 is connected to the third inner adjustment plate 24 by threading, and the third inner adjustment plate 24 is detachably connected to the clamping seat 2 by bolts. The rear end of the fourth blade inner clamp 11 is connected to one end of the fourth inner adjustment screw 27, the other end of the fourth inner adjustment screw 27 is connected to the fourth inner adjustment plate 26 by threading, and the fourth inner adjustment plate 26 is detachably connected to the clamping seat 2 by bolts. The rear end of the fifth blade inner clamp block 12 is connected to one end of the fifth inner adjustment screw 29, the other end of the fifth inner adjustment screw 29 is connected to the fifth inner adjustment plate 28 by threading, and the fifth inner adjustment plate 28 is detachably connected to the clamping seat 2 by bolts. The rear end of the sixth blade inner clamp block 13 is connected to one end of the sixth inner adjustment screw 31, the other end of the sixth inner adjustment screw 31 is connected to the sixth inner adjustment plate 30 by threading, and the sixth inner adjustment plate 30 is detachably connected to the clamping seat 2 by bolts.

[0025] like Figure 1 As shown, the first clamping plate 3, the second clamping plate 4 and the third clamping plate 5 are transversely arranged at the side opening end of the clamping cavity 7, and the first clamping plate 3, the second clamping plate 4 and the third clamping plate 5 are distributed from top to bottom. One end of the first clamping plate 3, the second clamping plate 4 and the third clamping plate 5 are rotatably connected to the same rotating shaft 6, and the rotating shaft 6 is vertically fixed to one side of the clamping seat 2, and the other ends of the first clamping plate 3, the second clamping plate 4 and the third clamping plate 5 are detachably connected to the other side of the clamping seat 2 by bolts.

[0026] like Figure 4As shown, the first blade outer clamp 14 is arranged on the first clamping plate 3 facing the first blade inner clamp 8. The first blade outer clamp 14 can fit in contact with the blade side, and cooperate with the first blade inner clamp 8 to achieve internal and external clamping of the blade. The first clamping plate 3 is arranged on the fourth blade outer clamp 17 facing the fourth blade inner clamp 11. The fourth blade outer clamp 17 can fit in contact with the blade side, and cooperate with the fourth blade inner clamp 11 to achieve internal and external clamping of the blade. The second clamping plate 4 is arranged on the second blade outer clamp 15 facing the second blade inner clamp 9. The second blade outer clamp 15 can fit in contact with the blade side, and cooperate with the second blade inner clamp 9 to achieve internal and external clamping of the blade. The second clamping plate 4 is arranged on the fifth blade outer clamp 18 facing the fifth blade inner clamp 12. The fifth blade outer clamp 18 can fit in contact with the blade side, and cooperate with the fifth blade inner clamp 12 to achieve internal and external clamping of the blade. The third blade outer clamping block 16 is arranged on the third clamping plate 5 facing the third blade inner clamping block 10. The third blade outer clamping block 16 can fit in contact with the blade side, and cooperate with the third blade inner clamping block 10 to achieve internal and external clamping of the blade. The third clamping plate 5 is arranged on the sixth blade outer clamping block 19 facing the sixth blade inner clamping block 13. The sixth blade outer clamping block 19 can fit in contact with the blade side, and cooperate with the sixth blade inner clamping block 13 to achieve internal and external clamping of the blade.

[0027] like Figure 1 and Figure 4As shown, one end of the first blade outer clamp 14 is connected to one end of the first outer adjustment screw 35, the first outer adjustment screw 35 is connected to the first clamping plate 3 by threading, and the other end of the first outer adjustment screw 35 extends out of the first clamping plate 3. A first limit plate 32 is arranged on the upper end surface of the first blade outer clamp 14, and the first limit plate 32 is detachably connected to the first clamping plate 3 by bolts. One end of the fourth blade outer clamp 17 is connected to one end of the fourth outer adjustment screw 38, the fourth outer adjustment screw 38 is connected to the first clamping plate 3 by threading, and the other end of the fourth outer adjustment screw 38 extends out of the first clamping plate 3. One end of the second blade outer clamp 15 is connected to one end of the second outer adjustment screw 36, the second outer adjustment screw 36 is connected to the second clamping plate 4 by threading, and the other end of the second outer adjustment screw 36 extends out of the second clamping plate 4. A second limit plate 33 is arranged on the upper end surface of the second blade outer clamp 15, and the second limit plate 33 is detachably connected to the second clamping plate 4 by bolts. One end of the fifth blade outer clamp 18 is connected to one end of the fifth outer adjustment screw 39, the fifth outer adjustment screw 39 is connected to the second clamping plate 4 by threading, and the other end of the fifth outer adjustment screw 39 extends out of the second clamping plate 4. One end of the third blade outer clamp 16 is connected to one end of the third outer adjustment screw 37, the third outer adjustment screw 37 is connected to the third clamping plate 5 by threading, and the other end of the third outer adjustment screw 37 extends out of the third clamping plate 5. A third limit plate 34 is provided on the upper end surface of the third blade outer clamp 16, and the third limit plate 34 is detachably connected to the third clamping plate 5 by bolts. One end of the sixth blade outer clamp 19 is connected to one end of the sixth outer adjustment screw 40, the sixth outer adjustment screw 40 is connected to the third clamping plate 5 by threading, and the other end of the sixth outer adjustment screw 40 extends out of the third clamping plate 5.

[0028] like Figure 2 and Figure 4 As shown, the first tenon inner clamp block 41, the second tenon inner clamp block 42 and the third tenon inner clamp block 43 are arranged at the top of the inner bottom end surface of the clamping cavity 7, and one end of the first tenon inner clamp block 41, the second tenon inner clamp block 42 and the third tenon inner clamp block 43 are pressed tightly against the side surface of the tenon portion of the turbine moving blade. The first tenon outer clamp block 44, the second tenon outer clamp block 45 and the third tenon outer clamp block 46 are arranged at the top of the first clamping plate 3 facing the clamping cavity 7, and one end of the first tenon outer clamp block 44, the second tenon outer clamp block 45 and the third tenon outer clamp block 46 are pressed tightly against the side surface of the tenon portion of the turbine moving blade.

[0029] like Figure 2 and Figure 3As shown, the rear end of the first tenon tooth inner clamping block 41 is connected to one end of the first tenon tooth adjusting screw 53, and the other end of the first tenon tooth adjusting screw 53 is connected to the adjusting screw mounting plate 59 by threading, and the adjusting screw mounting plate 59 is detachably connected to the clamping seat 2 by bolts. The rear end of the second tenon tooth inner clamping block 42 is connected to one end of the second tenon tooth adjusting screw 54, and the other end of the second tenon tooth adjusting screw 54 is connected to the adjusting screw mounting plate 59 by threading. The rear end of the third tenon tooth inner clamping block 43 is connected to one end of the third tenon tooth adjusting screw 55, and the other end of the third tenon tooth adjusting screw 55 is connected to the adjusting screw mounting plate 59 by threading. The rear end of the first tenon tooth outer clamping block 44 is connected to one end of the fourth tenon tooth adjusting screw 56, and the other end of the fourth tenon tooth adjusting screw 56 is connected to the adjusting screw mounting plate 59 by threading. The rear end of the second tenon tooth outer clamping block 45 is connected to one end of the fifth tenon tooth adjusting screw 57, and the other end of the fifth tenon tooth adjusting screw 57 is connected to the adjusting screw mounting plate 59 by threading. The rear end of the third tenon outer clamping block 46 is connected to one end of the sixth tenon adjusting screw 58 , and the other end of the sixth tenon adjusting screw 58 is connected to the adjusting screw mounting plate 59 through threads.

[0030] like Figure 1 and Figure 2 As shown, the upper end surface of the clamping seat 2 is detachably connected to the first and second pressing plates 47 and 48 of the L-shaped structure by bolts, and the first and second pressing plates 47 and 48 are respectively located on the left and right sides of the clamping cavity 7. The first and second pressing plates 47 and 48 can be pressed downwardly against the upper end surface of the tenon tooth portion of the turbine moving blade.

[0031] like Figure 2 and Figure 3 As shown, the upper end surface of the clamping seat 2 is detachably connected to the first positioning block 49 and the second positioning block 50 by bolts, and the front ends of the first positioning block 49 and the second positioning block 50 can be positioned to contact the tenon portion of the turbine blade, thereby realizing auxiliary positioning of the tenon portion of the turbine blade. A third positioning block 51 is provided on the inner side surface of the clamping cavity 7, and the third positioning block 51 can be positioned to contact the blade body side surface of the inner side surface of the clamping cavity 7 of the turbine blade, thereby realizing auxiliary positioning of the blade body of the turbine blade. The upper end surface of the clamping seat 2 is detachably connected to the fourth positioning block 52 by bolts, and the upper end of the fourth positioning block 52 can be positioned to contact the lower end surface of the tenon portion of the turbine blade, thereby realizing auxiliary positioning of the tenon portion of the turbine blade.

[0032] The working principle of the utility model is: when performing the grinding process of the tenon tooth portion of the turbine blade, the tenon tooth portion of the turbine blade is upwardly loaded into the clamping cavity 7 of the clamping seat 2, and then the first clamping plate 3, the second clamping plate 4 and the third clamping plate 5 are closed, so that the blade body and the tenon tooth portion of the turbine blade are clamped, ensuring the stable progress of the subsequent grinding process of the tenon tooth portion of the turbine blade.

[0033] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A thin and long gas turbine impeller tenon grinding fixture, comprising a base plate (1), characterized in that: A clamping seat (2) is fixed on the bottom plate (1), and a clamping cavity (7) which passes through the clamping seat (2) from top to bottom is provided on one side of the clamping seat (2), and a turbine blade for tenon grinding is clamped in the clamping cavity (7); a first blade body inner clamping block (8), a second blade body inner clamping block (9) and a third blade body inner clamping block (10) are provided on the inner bottom end surface of the clamping cavity (7) in sequence from top to bottom, and the front ends of the first blade body inner clamping block (8), the second blade body inner clamping block (9) and the third blade body inner clamping block (10) extend out of the inner bottom end surface of the clamping cavity (7) and fit in contact with the side surface of the blade body; a fourth blade body inner clamping block (11), a fifth blade body inner clamping block (12) and a sixth blade body inner clamping block (13) are provided on the inner side surface of the clamping cavity (7) in sequence from top to bottom, and the front ends of the fourth blade body inner clamping block (11), the fifth blade body inner clamping block (12) and the sixth blade body inner clamping block (13) extend out of the inner side surface of the clamping cavity (7) and fit in contact with the side surface of the blade body; The side opening end of the clamping cavity (7) is laterally provided with a first clamping plate (3), a second clamping plate (4) and a third clamping plate (5), the first clamping plate (3), the second clamping plate (4) and the third clamping plate (5) are distributed from top to bottom, one end of the first clamping plate (3), the second clamping plate (4) and the third clamping plate (5) are rotatably connected to the same rotating shaft (6), the rotating shaft (6) is vertically fixed to one side of the clamping seat (2), and the other ends of the first clamping plate (3), the second clamping plate (4) and the third clamping plate (5) are detachably connected to the other side of the clamping seat (2) by bolts; the first clamping plate (3) is provided with a first blade outer clamping block (14) facing the first blade inner clamping block (8), the first blade outer clamping block (14) can fit in contact with the side surface of the blade, and the first clamping plate (3) faces the fourth blade inner clamping block (11 ) is provided at a position of the fourth blade body outer clamp (17), the fourth blade body outer clamp (17) can fit in contact with the side surface of the blade body; the second blade body outer clamp (15) is provided on the second clamping plate (4) facing the position of the second blade body inner clamp (9), the second blade body outer clamp (15) can fit in contact with the side surface of the blade body; the fifth blade body outer clamp (18) is provided on the second clamping plate (4) facing the position of the fifth blade body inner clamp (12), the fifth blade body outer clamp (18) can fit in contact with the side surface of the blade body; the third blade body outer clamp (16) is provided on the third clamping plate (5) facing the position of the third blade body inner clamp (10), the third blade body outer clamp (16) can fit in contact with the side surface of the blade body; the sixth blade body outer clamp (19) is provided on the third clamping plate (5) facing the position of the sixth blade body inner clamp (13), the sixth blade body outer clamp (19) can fit in contact with the side surface of the blade body; A first tenon inner clamp block (41), a second tenon inner clamp block (42) and a third tenon inner clamp block (43) are arranged at the top position of the inner bottom end surface of the clamping cavity (7); one end of the first tenon inner clamp block (41), the second tenon inner clamp block (42) and the third tenon inner clamp block (43) are pressed tightly against the side surface of the tenon portion of the turbine moving blade; a first tenon outer clamp block (44), a second tenon outer clamp block (45) and a third tenon outer clamp block (46) are arranged at the top position of the first clamping plate (3) facing the clamping cavity (7); one end of the first tenon outer clamp block (44), the second tenon outer clamp block (45) and the third tenon outer clamp block (46) are pressed tightly against the side surface of the tenon portion of the turbine moving blade.

2. A thin and long gas turbine impeller tenon grinding fixture as claimed in claim 1, characterized in that: The rear end of the first blade inner clamp (8) is connected to one end of the first inner adjustment screw (21), the other end of the first inner adjustment screw (21) is connected to the first inner adjustment plate (20) by means of a thread, and the first inner adjustment plate (20) is detachably connected to the clamping seat (2) by means of bolts; the rear end of the second blade inner clamp (9) is connected to one end of the second inner adjustment screw (23), the other end of the second inner adjustment screw (23) is connected to the second inner adjustment plate (22) by means of a thread, and the second inner adjustment plate (22) is detachably connected to the clamping seat (2) by means of bolts; the rear end of the third blade inner clamp (10) is connected to one end of the third inner adjustment screw (25), the other end of the third inner adjustment screw (25) is connected to the third inner adjustment plate (24) by means of a thread, and the third inner adjustment plate (24) is detachably connected to the clamping seat (2) by means of bolts. The rear end of the fourth blade inner clamp (11) is connected to one end of the fourth inner adjustment screw (27), the other end of the fourth inner adjustment screw (27) is connected to the fourth inner adjustment plate (26) by means of a thread, and the fourth inner adjustment plate (26) is detachably connected to the clamping seat (2) by means of bolts. The rear end of the fifth blade inner clamp (12) is connected to one end of the fifth inner adjustment screw (29), the other end of the fifth inner adjustment screw (29) is connected to the fifth inner adjustment plate (28) by means of a thread, and the fifth inner adjustment plate (28) is detachably connected to the clamping seat (2) by means of bolts. The rear end of the sixth blade inner clamp (13) is connected to one end of the sixth inner adjustment screw (31), the other end of the sixth inner adjustment screw (31) is connected to the sixth inner adjustment plate (30) by means of a thread, and the sixth inner adjustment plate (30) is detachably connected to the clamping seat (2) by means of bolts.

3. A thin and long gas turbine impeller tenon grinding fixture as claimed in claim 2, characterized in that: One end of the first blade body outer clamp (14) is connected to one end of a first outer adjusting screw (35), the first outer adjusting screw (35) is connected to the first clamping plate (3) via a thread, the other end of the first outer adjusting screw (35) extends out of the first clamping plate (3), a first limit plate (32) is provided on the upper end surface of the first blade body outer clamp (14), the first limit plate (32) is detachably connected to the first clamping plate (3) via a bolt, and one end of the fourth blade body outer clamp (17) is connected to the fourth outer adjusting screw (38 ), a fourth external adjusting screw (38) is connected to the first clamping plate (3) by means of a thread, and the other end of the fourth external adjusting screw (38) extends out of the first clamping plate (3); one end of the second blade body external clamping block (15) is connected to one end of the second external adjusting screw (36), the second external adjusting screw (36) is connected to the second clamping plate (4) by means of a thread, and the other end of the second external adjusting screw (36) extends out of the second clamping plate (4); a second limiting plate (33) is provided on the upper end surface of the second blade body external clamping block (15); The second limit plate (33) is detachably connected to the second clamping plate (4) by means of bolts; one end of the fifth blade outer clamping block (18) is connected to one end of the fifth outer adjusting screw (39); the fifth outer adjusting screw (39) is connected to the second clamping plate (4) by means of threads; the other end of the fifth outer adjusting screw (39) extends out of the second clamping plate (4); one end of the third blade outer clamping block (16) is connected to one end of the third outer adjusting screw (37); the third outer adjusting screw (37) is connected to the third clamping plate (5 ), the other end of the third external adjustment screw (37) extends out of the third clamping plate (5), a third limit plate (34) is provided on the upper end surface of the third blade body external clamping block (16), the third limit plate (34) is detachably connected to the third clamping plate (5) by means of bolts, one end of the sixth blade body external clamping block (19) is connected to one end of the sixth external adjustment screw (40), the sixth external adjustment screw (40) is connected to the third clamping plate (5) by means of threads, and the other end of the sixth external adjustment screw (40) extends out of the third clamping plate (5).

4. A thin and long gas turbine impeller tenon grinding fixture as claimed in claim 3, characterized in that: The rear end of the first tenon tooth inner clamping block (41) is connected to one end of the first tenon tooth adjusting screw (53), the other end of the first tenon tooth adjusting screw (53) is connected to the adjusting screw mounting plate (59) via a thread, and the adjusting screw mounting plate (59) is detachably connected to the clamping seat (2) via a bolt; the rear end of the second tenon tooth inner clamping block (42) is connected to one end of the second tenon tooth adjusting screw (54), the other end of the second tenon tooth adjusting screw (54) is connected to the adjusting screw mounting plate (59) via a thread; the rear end of the third tenon tooth inner clamping block (43) is connected to one end of the third tenon tooth adjusting screw (55), the other end of the third tenon tooth adjusting screw (55) is connected to the adjusting screw mounting plate (59) via a thread. The first tenon tooth outer clamping block (44) is connected to one end of the fourth tenon tooth adjusting screw (56) by a thread, and the other end of the fourth tenon tooth adjusting screw (56) is connected to the adjusting screw mounting plate (59) by a thread. The second tenon tooth outer clamping block (45) is connected to one end of the fifth tenon tooth adjusting screw (57) by a thread, and the other end of the fifth tenon tooth adjusting screw (57) is connected to the adjusting screw mounting plate (59) by a thread. The third tenon tooth outer clamping block (46) is connected to one end of the sixth tenon tooth adjusting screw (58) by a thread, and the other end of the sixth tenon tooth adjusting screw (58) is connected to the adjusting screw mounting plate (59) by a thread.

5. A thin and long gas turbine impeller tenon grinding fixture as claimed in claim 4, characterized in that: The upper end surface of the clamping seat (2) is detachably connected to a first pressure plate (47) and a second pressure plate (48) of an L-shaped structure by bolts. The first pressure plate (47) and the second pressure plate (48) are respectively located on the left and right sides of the clamping cavity (7). The first pressure plate (47) and the second pressure plate (48) can be pressed downwardly onto the upper end surface of the tenon tooth portion of the turbine moving blade.

6. A thin and long gas turbine impeller tenon grinding fixture as claimed in claim 5, characterized in that: The upper end surface of the clamping seat (2) is detachably connected to a first positioning block (49) and a second positioning block (50) by bolts, and the front ends of the first positioning block (49) and the second positioning block (50) can be positioned to contact the tenon tooth portion of the turbine moving blade. A third positioning block (51) is arranged on the inner side surface of the clamping cavity (7), and the third positioning block (51) can be positioned to contact the blade body side surface of the inner side surface of the clamping cavity (7) of the turbine moving blade. The upper end surface of the clamping seat (2) is detachably connected to a fourth positioning block (52) by bolts, and the upper end of the fourth positioning block (52) can be positioned to contact the lower end surface of the tenon tooth portion of the turbine moving blade.

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