A light-weight fixture for turbine blade tenon grinding

Abstract

The present application relates to a kind of light fixture for turbine blade tenon tooth grinding, for holding turbine blade, the light fixture includes big fixture, small fixture and at least one connecting piece, the small fixture is used to hold turbine blade and is placed in the upside of big fixture, and the upside of big fixture, turbine blade and the upside and downside of small fixture are all parallel to each other, the connecting piece is perpendicular to the upside of big fixture, and one end passes through small fixture, the other end is connected to big fixture.The technical scheme of the present application can improve the technical problem of time-consuming and laborious in the prior art, affect the processing efficiency of each time turning and fixing the whole fixture.

Description

Technical Field

[0001] This invention relates to the field of aero-engine component processing equipment, and in particular to a lightweight fixture for grinding the tenon teeth of aero-engine turbine blades. Background Technology

[0002] The aircraft engine is one of the core components of an aircraft, and the turbine blade is one of the key components of the aircraft engine. Its size and shape have an important impact on the performance and efficiency of the engine. In particular, the symmetry requirements on both sides of the grinding teeth of the aircraft engine turbine blade are very strict.

[0003] Reference Figure 13 A turbine blade 1 is currently available, which is generally thicker at both ends and thinner in the middle. One end is a tenon section 11, with tenons symmetrically arranged on both sides. The other end and the middle section are clamping sections 12. The end of the clamping section 12 away from the tenon section 11 is a plate-shaped clamping plate 13 with a cross-section larger than that of the middle section. For this turbine blade, when the blade length is relatively short, in the prior art, as one of the processing methods, a combination of machine tools and manual processing is used. Specifically, the clamping section of the turbine blade is clamped in a symmetrical fixture made of 45 steel on the upper and lower bases, so that the tenon section extends laterally out of the fixture. The fixture as a whole is fixed to the worktable of the machine tool by multiple bolts. During the actual processing, the lower base of the fixture is fixed on the worktable, and one of the machining surfaces of the tenon section extending laterally from the fixture faces upward. After the grinding is completed, several bolts are loosened manually, the fixture is rotated 180°, and then the upper base is fixed to the machine tool worktable with several bolts for grinding of the other machining surface. After the grinding is completed, the fixture is disassembled, and another turbine blade that needs to be processed is removed and replaced.

[0004] When processing using the above method, the operator has to flip the entire fixture each time, which is very cumbersome, time-consuming, and labor-intensive, affecting processing efficiency. Summary of the Invention

[0005] This invention addresses the technical problem in the prior art where manually flipping and fixing the entire fixture each time is time-consuming and labor-intensive, affecting processing efficiency, by providing a lightweight fixture for grinding the tenon teeth of aero-engine turbine blades.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0007] A lightweight jig for grinding the tenon teeth of an aero-engine turbine blade is provided. The jig is used to hold the aero-engine turbine blade and includes a large jig, a small jig, and at least one connector. The small jig is used to hold the aero-engine turbine blade and is placed on the upper side of the large jig. The upper side of the large jig, the aero-engine turbine blade, and the upper and lower sides of the small jig are all parallel to each other. The connector is perpendicular to the upper side of the large jig, with one end passing through the small jig and the other end connected to the large jig.

[0008] The beneficial effects of this invention are as follows: After the small clamp is fixed to the upper side of the large clamp by the connector and the tenon teeth on one side of the aero-engine turbine blade are ground, only force needs to be applied to the small clamp to make it detach from the connector and flip it over. Then, it can be placed back on the upper side of the large clamp and the connector can be passed through the small clamp to grind the tenon teeth on the other side. This flipping method only requires flipping the small clamp, which reduces the amount of flipping and does not require disassembling and assembling the entire clamp every time it is flipped. This improves the technical problem in the prior art where it is time-consuming and laborious to manually flip and fix the entire clamp every time, which affects the processing efficiency. The upper side of the large clamp, the aero-engine turbine blade, and the upper and lower sides of the small clamp are parallel to each other, ensuring that the position of the grinding surface of the tenon teeth on the other side remains unchanged after flipping.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the upper side of the large clamp is inclined, and its lower end is connected to an upwardly extending positioning plate, and the side of the small clamp abuts against the positioning plate.

[0011] The beneficial effects of adopting the above-mentioned further solution are: the positioning plate provides a positioning function when placing or flipping and placing the small clamp, and provides a blocking function for the downward transmission of force when grinding the tenon section, preventing the small clamp from moving under force and causing the connector to deform.

[0012] Furthermore, one connector is provided.

[0013] The advantages of adopting the above-mentioned further solution are: the connector, positioning plate and the upper tilt of the large clamp work together to ensure the stability of the small clamp; at the same time, only one connector needs to be disassembled and assembled during flipping, which reduces the workload and improves work efficiency.

[0014] Furthermore, the connector includes a threaded sleeve and a screw, the threaded sleeve being fixed to a large clamp, and the screw passing through a small clamp and threadedly connected to the threaded sleeve.

[0015] The beneficial effects of adopting the above-mentioned further solution are: during installation, the small clamp can be fixed simply by passing the shank of the screw through the small clamp and threading it to the threaded sleeve; at the same time, the head of the screw can further limit the upward disengagement of the small clamp.

[0016] Furthermore, the aero-engine turbine blade includes a tenon section and a clamping section, the clamping section being provided with a clamping plate; the small clamp includes a base, a positioning component, and a clamping component, the base being placed on the large clamp and passed through by a connector, and the base having at least one workstation, the number of positioning components being the same as the number of workstations and corresponding one-to-one, being detachably connected to the workstation, the positioning component being used to support the clamping section and the clamping plate, and the clamping component being detachably connected to the base and used to clamp and support the clamping section and the clamping plate.

[0017] The beneficial effect of adopting the above-mentioned further solution is that during installation, the tenon segment is first positioned in the work station by the positioning component, and then the tenon segment is pressed into the positioning component by the clamping component.

[0018] Furthermore, the positioning assembly includes a positioning seat, a positioning block, and a positioning element, all of which are detachably connected to the base;

[0019] At least two positioning seats are provided, one of which is used to support the lower side of the clamping section near the tenon section, and the other positioning seat is used to support the lower side of the clamping plate.

[0020] At least two positioning blocks are provided, which are used to simultaneously abut against the same side in the horizontal direction of the clamping section, and one of the positioning blocks is used to abut against a section of the clamping section near the tenon section, while the other positioning block abuts against the clamping plate.

[0021] One positioning element is provided and is used to abut against the side of the clamping plate facing the tenon section.

[0022] The beneficial effects of adopting the above-mentioned further solution are: when clamping the turbine blade, the clamping section near the tenon section and the clamping plate are placed on two positioning seats respectively. The positioning seats form a support, and the positioning block forms a lateral positioning of the turbine blade. The positioning component positions the turbine blade in one direction from the length direction of the turbine blade, which facilitates subsequent clamping and further limiting by the clamping assembly.

[0023] Furthermore, the clamping assembly includes a first side clamping member, a second side clamping member, a first lower clamping member, a second lower clamping member, and an end clamping member, all of which are detachably connected to the base;

[0024] At least one first side pressing member and one second side pressing member are provided for abutting against the other side of the clamping section in the horizontal direction relative to the positioning component, and one of the first side pressing members is used to abut against a section of the clamping section near the tenon section, and one of the second side pressing members abuts against the clamping plate.

[0025] At least one first pressing member and one second pressing member are provided for abutting against the upper side of the clamping section relative to the positioning component, and one of the first pressing members abuts against a section of the clamping section near the tenon section, and the other second pressing member abuts against the clamping plate.

[0026] One end clamp is provided and is used to abut against the side of the clamping plate away from the tenon section relative to the positioning component.

[0027] The beneficial effect of adopting the above-mentioned further solution is that after the turbine blade is placed on the positioning assembly, the turbine blade can be pressed in sequence by the first side pressure member, the second side pressure member, the first lower pressure member, the second lower pressure member and the end pressure member, and then the processing operation can be carried out.

[0028] Furthermore, a support plate is detachably connected to the small clamp, and the end clamp is detachably connected to the support plate.

[0029] The beneficial effects of adopting the above-mentioned further solution are: by utilizing the detachable connection of the support plate, it is convenient to quickly complete the disassembly and assembly of the end pressure components. For example, after the first side pressure component and the second side pressure component form the side pressure on the turbine blade, the turbine blade can be finally pressed by installing the support plate.

[0030] Furthermore, the small clamp is a 7075 aluminum alloy clamp.

[0031] The beneficial effects of adopting the above-mentioned further solution are: using 7075 aluminum alloy to make the clamp, compared with the 45 steel used in the prior art, makes the small clamp lighter and easier to flip.

[0032] Furthermore, at least one CrWMn pressure plate and / or at least one CrWMn reinforcing screw are detachably connected to the upper and lower sides of the small clamp, respectively, and the end sides of the CrWMn pressure plate and the CrWMn reinforcing screw are flush with the corresponding upper and lower sides of the small clamp.

[0033] The beneficial effects of adopting the above-mentioned further solution are: the use of CrWMn pressure plates and CrWMn reinforcing screws improves the structural strength of the upper and lower sides of the small clamp, and improves the hardness and wear resistance of the contact points. Attached Figure Description

[0034] Figure 1 This is an isometric view from a first perspective of one of the processing states of the present invention;

[0035] Figure 2 This is a second-view isometric view of one of the processing states of the present invention;

[0036] Figure 3 A first-view isometric view of another processing state of the present invention;

[0037] Figure 4 This is a second-view isometric view of another processing state of the present invention;

[0038] Figure 5 This is an exploded view of the present invention;

[0039] Figure 6 This is an isometric view of the small clamp of the present invention;

[0040] Figure 7 This is a partial cross-sectional view of the small clamp of the present invention;

[0041] Figure 8 This is a first partial structural diagram of the present invention, mainly showing the positioning component and the clamping component;

[0042] Figure 9 This is a schematic diagram of the second partial structure of the present invention;

[0043] Figure 10 for Figure 9 Exploded view;

[0044] Figure 11 for Figure 10 First enlarged view of the area;

[0045] Figure 12 for Figure 10 Second enlarged view of the area;

[0046] Figure 13 This is an isometric view of an existing aero-engine turbine blade.

[0047] The attached diagram lists the components represented by each number as follows:

[0048] 1. Aero-engine turbine blade; 11. Tenon section; 12. Clamping section; 13. Clamping plate;

[0049] 2. Large clamp; 21. Positioning plate; 22. Reinforcing plate;

[0050] 3. Small clamp; 31. Base; 311. Support plate;

[0051] 32. Positioning component; 321. Positioning seat; 322. Positioning block; 323. Positioning element; 3231. Seat; 3232. Positioning post;

[0052] 33. Clamping assembly; 331. First side clamping member; 3311. First side clamping seat; 3312. Eccentric pin; 332. Second side clamping member; 3321. Second side clamping seat; 3322. Top plate; 333. First lower clamping member; 3331. Pressure plate; 3332. Pressure block; 334. Second lower clamping member; 3341. Crossbeam; 3342. First push rod; 3343. Second push rod; 3344. Opening pad; 335. End clamping member; 3351. Reinforcing block; 3352. Anchoring screw;

[0053] 4. Connecting parts; 41. Threaded sleeves; 42. Screws;

[0054] 5. CrWMn pressure plate;

[0055] 6. CrWMn reinforced screws. Detailed Implementation

[0056] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0057] Example 1

[0058] like Figures 1 to 5 A lightweight jig for grinding the tenon teeth of an aero-engine turbine blade is used to hold the aero-engine turbine blade 1. Typically, the aero-engine turbine blade 1 includes a tenon tooth section 11 and a clamping section 12. The clamping section 12 is provided with a clamping plate 13 away from the tenon tooth section 11. The tenons of the tenon tooth section 11 are symmetrically arranged on both sides.

[0059] The present invention provides a lightweight fixture for grinding the tenon teeth of aero-engine turbine blades, comprising a large fixture 2, a small fixture 3, and at least one connecting member 4. The small fixture 3 is used to hold the aero-engine turbine blade 1 and place it on the upper side of the large fixture 2. The upper side of the large fixture 2, the aero-engine turbine blade 1, and the upper and lower sides of the small fixture 3 are all parallel to each other. The connecting member 4 is perpendicular to the upper side of the large fixture 2, with one end passing through the small fixture 3 and the other end connected to the large fixture 2.

[0060] The beneficial effects of this embodiment are as follows: After the small clamp 3 is fixed to the upper side of the large clamp 2 by the connector 4 and the tenon teeth on one side of the turbine blade 1 are ground, only force needs to be applied to the small clamp 3 to make it detach from the connector 4 and flip it over. Then, it is placed on the upper side of the large clamp 2 again, and the connector 4 passes through the small clamp 3, so that the tenon teeth on the other side can be ground. This flipping method only requires flipping the small clamp 3, which reduces the amount of flipping. It also eliminates the need to disassemble and reassemble the entire clamp every time it is flipped (the large clamp 2 is always fixed on the machine tool). This improves the technical problem in the prior art where it is time-consuming and laborious to manually flip and fix the entire clamp every time, which affects the processing efficiency. The upper side of the large clamp 2, the turbine blade 1, and the upper and lower sides of the small clamp 3 are parallel to each other, ensuring that the position of the grinding surface of the tenon teeth on the other side remains unchanged after flipping.

[0061] During installation, the large clamp 2 is simply fixed to the machine tool's worktable, typically using bolts in existing technology. The large clamp 2 is then connected to the small clamp 3 via the connector 4. Alternatively, the turbine blade 1 can be clamped and fixed to the small clamp 3 before installation, specifically in the clamping section 12. The bolts securing the large clamp 2 to the machine tool's worktable can be circumferentially positioned on the large clamp 2 or countersunk at the contact surface between the large clamp 2 and the small clamp 3, reducing the size of the large clamp 2.

[0062] As one of the specific configurations of the connector 4 in this embodiment, one end of the connector 4 can be detachably connected to the large clamp 2 (such as by threaded connection, snap-fit, etc.). In this solution, when flipping the small clamp 3, the connector 4 passing through the small clamp 3 can be removed first, so that the connector 4 is dislodged from the small clamp 3, which facilitates the quick flipping of the small clamp 3; after flipping, the connector 4 is inserted again and connected to the large clamp 2, so that the next grinding operation can be performed.

[0063] As a second specific arrangement of the connector 4 in this embodiment, one end of the connector 4 can be fixedly connected to the large clamp 2 (e.g., by welding, bolting, etc.), and the other end protrudes through the small clamp 3. In this design, when flipping the small clamp 3, force can be directly applied to the small clamp 3, causing it to overcome gravity and move upwards along the connector 4 until it detaches from the connector 4. After flipping, the small clamp 3 is inserted into the connector 4 and placed on the large clamp 2. In this design, the small clamp 3 moves a greater distance, requiring relatively more effort.

[0064] Example 2

[0065] like Figure 4 and Figure 5 Based on Example 1, the upper side of the large clamp 2 is inclined, and its lower end is connected to an upwardly extending positioning plate 21, and the side of the small clamp 3 abuts against the positioning plate.

[0066] The beneficial effect of the preferred solution in the above embodiments is that the positioning plate 21 provides a positioning function when the small clamp 3 is placed or flipped and placed, and provides a blocking function when the force is transmitted downward during the grinding of the tenon section 11, preventing the small clamp 3 from moving under the force and causing the connector 4 to deform.

[0067] In this invention, the horizontal cross-section of the large clamp 2 can be rectangular, pentagonal, hexagonal, etc.

[0068] Taking a rectangular horizontal cross-section of the large clamp 2 as an example, the following explanation is provided. As one possible arrangement, a positioning plate 21 is provided, connected to the lower end of the large clamp 2, and extends upwards. Alternatively, two, three, or four positioning plates 21 may be provided, connected at intervals or sequentially, and arranged around the end of the large clamp 2.

[0069] In the above configuration, preferably, the side of the small clamp 3 placed on the large clamp 2 that is away from the tenon section 11 abuts against the positioning plate 21 located at the lower end of the large clamp 2, so that when the tenon section 11 is processed, the positioning plate 21 forms a positive block against the movement of the small clamp 3 under force.

[0070] With respect to the above configuration, when multiple positioning plates 21 are provided and an opening is formed, the tenon segment 11 extends out from the opening, or the tenon segment 11 extends out from a position higher than one of the positioning plates 21.

[0071] Regarding the above configuration, when multiple positioning plates 21 are provided and form a closed structure, the tenon segment 11 extends from a position higher than one of the positioning plates 21.

[0072] Example 3

[0073] like Figure 4 and Figure 5 Based on embodiments 1 and 2, one connector 4 is provided.

[0074] The advantages of adopting the preferred solution in the above embodiments are that the connector 4, the positioning plate 21 and the inclined upper side of the large clamp 2 work together to ensure the stability of the small clamp 3; at the same time, when flipping, only one connector 4 needs to be disassembled and assembled, which reduces the workload and improves work efficiency.

[0075] Specifically, in this embodiment, the connector 4 can be disposed in the middle or at any end of the small clamp 3; as a preferred example, in the figure, the connector 4 is disposed in the middle of the small clamp 3.

[0076] Example 4

[0077] like Figure 5 Based on embodiments 1-3, the connector 4 includes a threaded sleeve 41 and a screw 42. The threaded sleeve 41 is fixed to the large clamp 2, and the screw 42 passes through the small clamp 3 and is threadedly connected to the threaded sleeve 41.

[0078] The beneficial effect of adopting the preferred solution in the above embodiments is that, during installation, the small clamp 3 can be fixed simply by passing the shank of the screw 42 through the small clamp 3 and threading it to the threaded sleeve 41; at the same time, the head of the screw 42 can further limit the upward disengagement of the small clamp 3.

[0079] Furthermore, a washer is fitted onto the screw 42 to abut against the small clamp 3 to prevent the screw 42 from loosening due to vibration during the rotary grinding process.

[0080] As a parallel embodiment of the above, the connector 4 includes a light rod, one end of which is fixed to the large clamp 2, and the other end passes through the small clamp 3.

[0081] As a parallel solution of the above embodiments, the connector 4 includes a threaded sleeve and a threaded rod. The threaded sleeve is fixed to the large clamp 2, and the threaded rod passes through the small clamp 3 and is threadedly connected to the threaded sleeve 41.

[0082] Example 5

[0083] like Figures 6 to 12 Based on embodiments 1-4, the small clamp 3 includes a base 31, a positioning component 32, and a clamping component 33. The base 31 is placed on the large clamp 2 and is passed through by the connector 4. The base 31 has at least one station. The number of positioning components 32 is the same as the number of stations and they are detachably connected to the stations. The positioning components 32 are used to support the clamping section 12 and the clamping plate 13. The clamping components 33 are detachably connected to the base 31 and are used to clamp and support the clamping section 12 and the clamping plate 13.

[0084] The advantage of the preferred solution in the above embodiments is that during installation, the tenon segment 11 is first positioned in the work station by the positioning component 32, and then the tenon segment 11 is pressed against the positioning component 32 by the clamping component 33.

[0085] Specifically, in this embodiment, the workstations are set up in one, two, three, or other ways.

[0086] Preferably, as shown in the figure, there are two workstations, and two positioning components 32 are respectively set at the two workstations to process two aero-engine turbine blades 1 simultaneously, thereby improving efficiency. In this solution, a through hole is made at the midpoint of the base 31 between the two workstations to allow the connecting piece 4 to pass through.

[0087] Example 6

[0088] like Figures 6 to 12 Based on embodiments 1-5, the positioning component 32 includes a positioning seat 321, a positioning block 322, and a positioning element 323, all of which are detachably connected to the base 31.

[0089] At least two positioning seats 321 are provided, one of which is used to support the lower side of the clamping section 12 near the tenon section 11, and the other positioning seat 321 is used to support the lower side of the clamping plate 13.

[0090] At least two positioning blocks 322 are provided for simultaneously abutting against the same side of the clamping section 12 in the horizontal direction, and one positioning block 322 is used to abut against a section of the clamping section 12 near the tenon section 11, while the other positioning block 322 abuts against the clamping plate 13.

[0091] One positioning element 323 is provided and is used to abut against the side of the clamping plate 13 facing the tenon section 11.

[0092] The beneficial effect of adopting the preferred solution in the above embodiments is that when clamping the turbine blade 1, the clamping section 12 near the tenon section 11 and the clamping plate 13 are respectively placed on the two positioning seats 321. The positioning seats 321 form a support, while the positioning block 322 forms a lateral positioning of the turbine blade 1, and the positioning member 323 positions the turbine blade 1 in one direction from the length direction of the turbine blade 1, which facilitates subsequent clamping and further limiting by the clamping assembly 33.

[0093] Specifically, the positioning seat 321, positioning block 322, and positioning element 323 are all connected to the base 31 by screws or a combination of screws and pins. The upper side of the positioning seat 321 is a plane that fits to the lower side of the clamping section 12 to ensure full contact. One side of the positioning block 322 is an inclined surface that fits to the horizontal side of the clamping section 12 and has an open structure facing the horizontal direction, forming a "U" shape.

[0094] The positioning component 323 includes a seat 3231 connected to the base 31 and a positioning post 3232 detachably connected to the seat 3231. One end face of the positioning post 3232 is spherical so as to abut against the side of the clamping plate 13 facing the tenon segment 11.

[0095] Example 7

[0096] like Figures 6 to 12 Based on embodiments 1-6, the pressing assembly 33 includes a first side pressing member 331, a second side pressing member 332, a first lower pressing member 333, a second lower pressing member 334, and an end pressing member 335, all of which are detachably connected to the base 31.

[0097] At least one first side pressing member 331 and one second side pressing member 332 are provided for abutting against the other side of the clamping section 12 in the horizontal direction relative to the positioning component 32, and one of the first side pressing members 331 abuts against a section of the clamping section 12 near the tenon section 11, and one of the second side pressing members 332 abuts against the clamping plate 13.

[0098] At least one first pressing member 333 and one second pressing member 334 are provided for abutting against the upper side of the clamping section 12 relative to the positioning component 32, and one of the first pressing members 333 abuts against a section of the clamping section 12 near the tenon section 11, and the other second pressing member 334 abuts against the clamping plate 13.

[0099] An end clamp 335 is provided and is used to abut against the side of the clamping plate 13 away from the tenon segment 11 relative to the positioning assembly 32.

[0100] The beneficial effect of adopting the preferred solution in the above embodiments is that after the turbine blade 1 is placed on the positioning assembly 32, the turbine blade 1 is pressed in sequence by the first side pressure member 331, the second side pressure member 332, the first lower pressure member 333, the second lower pressure member 334 and the end pressure member 335, and then the grinding operation can be performed.

[0101] Specifically, compared to embodiment 6, the first side pressing member 331 and the second side pressing member 332 are disposed opposite to the positioning block 322, forming a horizontal pressing on the turbine blade 1 from both sides in the width direction. The first lower pressing member 333 and the second lower pressing member 334 form a pressing on the turbine blade 1 from the top relative to the positioning seat 321. The end pressing member 335 forms a pressing on the turbine blade 1 from the length direction relative to the positioning member 323.

[0102] In one embodiment, the first side pressure member 331 includes a first side pressure seat 3311 connected to the base 31 by bolts and an eccentric pin 3312 inserted into the first side pressure seat 3311. The side of the eccentric pin 3312 is an arc surface and abuts against the side of the turbine blade 1 to form a pressing on the turbine blade 1.

[0103] The second side pressure member 332 includes a second side pressure seat 3321 connected to the base 31 by screws or a combination of screws and pins, and a top plate 3322 rotatably connected to the second side pressure seat 3321 at one end by a pin. The top plate 3322 is horizontal after rotation, and its other end abuts against the side of the turbine blade 1, thereby pressing against the turbine blade 1. Specifically, as one of the configurations of the present invention, when the second side pressure member 332 and the positioning member 323 are arranged opposite each other, a space is formed between the second side pressure seat 3321 and the positioning member 323, allowing the clamping section 12 to move freely in and out.

[0104] The first pressing component 333 includes a pressing plate 3331 connected to the base 31 by screws and a pressing block 3332 connected to the pressing plate 3331 by screws or pins. The number of pressing blocks 3332 is equal to the number of workstations, so as to simultaneously press down on multiple aero-engine turbine blades 1. The lower side of the pressing block 3332 is adapted to the pressurized side part of the aero-engine turbine blade 1 to fully press it down.

[0105] The second pressing component 334 includes a crossbeam 3341 connected to the base 31 by screws and a first push rod 3342 threadedly connected to the crossbeam 3341. The number of first push rods 3342 is equal to the number of workstations, so as to simultaneously press down on multiple aero-engine turbine blades 1. During use, the pressing force of the first push rod 3342 can be adjusted by rotation.

[0106] Furthermore, a second push rod 3343 is threadedly connected to the crossbeam 3341. The second push rod 3343 presses downward against the top plate 3322 to ensure that the top plate 3322 is pressed against the turbine blade 1 of the aero-engine.

[0107] Furthermore, an open washer 3344 is provided on the crossbeam 3341. The screw that connects the crossbeam 3341 to the base 31 is threaded onto the base 31 through the opening of the open washer 3344 to form a buffer effect. At the same time, the hole through which the screw passes on the base 31 is larger than the size of the screw head, so that after the open washer 3344 is pulled out, the crossbeam 3341 can be directly taken out upward without having to completely remove the screw.

[0108] The end clamping member 335 includes a reinforcing block 3351 connected to the base 31 by screws and a clamping screw 3352 threaded to the reinforcing block 3351. The end side of the clamping screw 3352 is arc-shaped and abuts against the side of the clamping plate 13 away from the tenon section 11.

[0109] Example 8

[0110] like Figures 4 to 12 Based on embodiments 1-7, a support plate 311 is detachably connected to the small clamp 3, and an end clamp 335 is detachably connected to the support plate 311.

[0111] The beneficial effect of adopting the preferred solution in the above embodiments is that the detachable connection of the support plate 311 facilitates the quick assembly and disassembly of the end pressure member 335. For example, after the first side pressure member 331 and the second side pressure member 332 form the side pressure on the turbine blade 1, the turbine blade 1 can be finally pressed by the installation of the support plate 311.

[0112] Specifically, the reinforcing block 3351 is detachably connected to the support plate 311 by screws.

[0113] Furthermore, a reinforcing plate 22 is provided on the positioning plate 21 of the large clamp 2. The reinforcing plate 22 can be made of CrWMn. When the large clamp 3 flips and moves downward, it impacts the reinforcing plate 22, reducing the possibility of damage to the positioning plate 21 due to direct impact.

[0114] Example 9

[0115] Based on Examples 1-8, the small clamp 3 is a 7075 aluminum alloy clamp.

[0116] The beneficial effect of adopting the preferred solution in the above embodiments is that the clamp is made of 7075 aluminum alloy, which is lighter and easier to flip compared to the 45 steel used in the prior art.

[0117] Example 10

[0118] like Figures 1 to 5 Based on embodiments 1-9, at least one CrWMn pressure plate 5 and / or at least one CrWMn reinforcing screw 6 are detachably connected to the upper and lower sides of the small clamp 3, respectively. The end sides of the CrWMn pressure plate 5 and the CrWMn reinforcing screw 6 are flush with the corresponding upper and lower sides of the small clamp 3.

[0119] The beneficial effect of the preferred solution in the above embodiments is that the use of CrWMn pressure plate 5 and CrWMn reinforcing screw 6 improves the structural strength of the upper and lower sides of the small clamp 3 and improves the hardness and wear resistance of the contact points.

[0120] In summary, as one of the specific installation methods of the present invention, when clamping the turbine blade 1, the top plate 3322 is first rotated in the opposite direction to make it vertical; then the clamping section 12 of the turbine blade 1 is placed on the positioning seat 321, so that the positioning block 322 and the positioning member 323 both position the turbine blade 1; then the top plate 3322 is rotated in the opposite direction, so that the top plate 3322 and the eccentric pin 3312 form a horizontal pressing on the turbine blade 1; then, the first pressing... Install component 333 and the second pressing component 334 to form a vertical pressing force; finally, install the support plate 311 and press the end with the end clamping component 335; then, install the connecting component 4 and install the small clamp 3 on the large clamp 2; then, grind the tenon section 11 of the turbine blade 1; when grinding the other side, first remove the connecting component 4, specifically unscrew the screw 42, flip the small clamp 3, and then tighten the screw 42 again to start grinding the other side.

[0121] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this invention.

[0122] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0123] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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 invention according to the specific circumstances.

[0124] In this invention, 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," "over," and "on top" of 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.

[0125] 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.

[0126] 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 lightweight jig for grinding the tenon teeth of aero-engine turbine blades, used to hold aero-engine turbine blades (1), characterized in that, The lightweight clamp includes a large clamp (2), a small clamp (3), and at least one connector (4). The small clamp (3) is used to clamp the turbine blade (1) and place it on the upper side of the large clamp (2). The upper side of the large clamp (2), the turbine blade (1), and the upper and lower sides of the small clamp (3) are all parallel to each other. The connector (4) is perpendicular to the upper side of the large clamp (2), with one end passing through the small clamp (3) and the other end connected to the large clamp (2). The turbine blade (1) includes a tenon section (11) and a clamping section (12). The clamping section (12) is provided with a clamping plate (13). The small clamp ( 3) Includes a base (31), positioning components (32), and clamping components (33). The base (31) is placed on a large clamp (2) and is passed through by a connector (4). The base (31) has at least one workstation. The number of positioning components (32) is the same as the number of workstations and they are detachably connected to the workstations. The positioning components (32) are used to support the clamping section (12) and the clamping plate (13). The clamping components (33) are detachably connected to the base (31) and are used to clamp and support the clamping section (12) and the clamping plate (13). The clamping components (33) include components that are detachably connected to the base (31). 1) A first side pressing member (331), a second side pressing member (332), a first lower pressing member (333), a second lower pressing member (334), and an end pressing member (335); at least one of the first side pressing member (331) and the second side pressing member (332) is provided for abutting against the other side of the clamping section (12) in the horizontal direction relative to the positioning component (32), and one of the first side pressing members (331) is used to abut against a section of the clamping section (12) near the tenon section (11), and the other of the second side pressing members (332) abuts against the clamping plate (13); the first lower pressing member (333), the second lower pressing member (334), and the end pressing member (335) are provided. At least one of each of the following components is provided: for abutting against the upper side of the clamping section (12) relative to the positioning component (32), and one of the first pressing members (333) abutting against a section of the clamping section (12) near the tenon section (11), and one of the second pressing members (334) abutting against the clamping plate (13); one end pressing member (335) is provided and abutting against the side of the clamping plate (13) away from the tenon section (11) relative to the positioning component (32); a support plate (311) is detachably connected to the small clamp (3), and the end pressing member (335) is detachably connected to the support plate (311).

2. The lightweight fixture for grinding tenon teeth of aero-engine turbine blades according to claim 1, characterized in that, The upper side of the large clamp (2) is inclined, and its lower end is connected to an upwardly extending positioning plate (21), and the side of the small clamp (3) abuts against the positioning plate (21).

3. The lightweight fixture for grinding tenon teeth of aero-engine turbine blades according to claim 1, characterized in that, One connector (4) is provided.

4. A lightweight fixture for grinding tenon teeth of aero-engine turbine blades according to claim 3, characterized in that, The connector (4) includes a threaded sleeve (41) and a screw (42). The threaded sleeve (41) is fixed to the large clamp (2), and the screw (42) passes through the small clamp (3) and is threaded to the threaded sleeve (41).

5. A lightweight fixture for grinding tenon teeth of aero-engine turbine blades according to claim 1, characterized in that, The positioning assembly (32) includes a positioning seat (321), a positioning block (322), and a positioning element (323), all detachably connected to the base (31). At least two positioning seats (321) are provided, one of which is used to support the lower side of the clamping section (12) near the tenon section (11), and the other of which is used to support the lower side of the clamping plate (13). At least two positioning blocks (322) are provided, which are used to simultaneously abut against the same side of the clamping section (12) in the horizontal direction, one of which is used to abut against the section of the clamping section (12) near the tenon section (11), and the other of which is used to abut against the clamping plate (13). One positioning element (323) is provided, which is used to abut against the side of the clamping plate (13) facing the tenon section (11).

6. A lightweight fixture for grinding tenon teeth of aero-engine turbine blades according to any one of claims 1-4, characterized in that, The small clamp (3) is a 7075 aluminum alloy clamp.

7. A lightweight fixture for grinding tenon teeth of aero-engine turbine blades according to claim 6, characterized in that, The small clamp (3) is detachably connected to at least one CrWMn pressure plate (5) and / or at least one CrWMn reinforcing screw (6) on its upper and lower sides respectively. The ends of the CrWMn pressure plate (5) and the CrWMn reinforcing screw (6) are flush with the corresponding upper and lower sides of the small clamp (3).

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