TiAl low-pressure turbine blade repairing tool capable of being overturned

Abstract

The reversible TiAl low-pressure turbine blade repairing tool comprises a base, a connecting ring arranged at the top of the base and an impeller workpiece arranged on the inner side of the connecting ring, fixing structures are arranged on the two sides of the inner wall of the connecting ring, and each fixing structure comprises a support fixedly connected to the two sides of the inner wall of the connecting ring. The surface of the support is sleeved with a sleeve, the sleeve is slidably connected with the support, the side, away from the support, of the sleeve extends to the two sides of the impeller workpiece and is inserted into the impeller workpiece, and a transmission structure is arranged on the surface of the connecting ring. The fixing structure and the sleeve are arranged on the inner wall of the connecting ring, the sleeve can be slidably arranged on the support in a sleeved mode and inserted into the impeller workpiece, the impeller workpiece can be effectively fixed, the position of the impeller workpiece can be stably kept in the repairing process, the impeller workpiece is prevented from moving or rotating, and the service life of the impeller workpiece is prolonged. Therefore, the precision and the safety of the repairing work are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-pressure turbine blade repair, in particular to a TiAl low-pressure turbine blade repair tooling that can be flipped. Background Technique

[0002] TiAl low-pressure turbine blades are key components in aero-engines and have many excellent properties and application values. TiAl (titanium aluminide) intermetallic compound, also known as TiAl alloy, is a material with excellent properties such as low density, high strength, high modulus, high creep resistance, and combustion resistance. Compared with traditional nickel-based superalloys, the weight reduction effect of TiAl alloy can reach about 40-50%, and at the same time, it has good high-temperature resistance, fatigue resistance, wear resistance, etc. It is an ideal material for manufacturing low-pressure turbine blades of aero-engines.

[0003] During the processing of turbine blades, they need to be fixed through tooling. For example, the patent application number disclosed on the Chinese Patent Network is: 202011606236.1, and the patent name is: A fixing tooling for steam turbine blades, including: a frame erected on a base; a translation adjustment mechanism arranged on the frame for performing the translation adjustment process on the blade to be processed; a lifting mechanism arranged at the working end of the translation adjustment mechanism for performing the lifting adjustment process on the blade to be processed; a horizontal flipping mechanism arranged at the working end of the lifting mechanism for performing the horizontal flipping process on the blade to be processed; a positioning mechanism arranged at the working end of the horizontal flipping mechanism and located below the horizontal flipping mechanism for positioning the blade to be processed for the positioning process. This technical solution solves the problem of poor welding consistency caused by manually adjusting the tooling position of the stationary blade. This device can automatically adjust the horizontal position, height, and horizontal inclination of the stationary blade, and then automatically adjust the tooling position to make the welding consistent and improve the welding accuracy.

[0004] However, the connection method of the existing impeller tooling is relatively single, mainly fixed by threaded connection. During disassembly and assembly, users need to repeatedly tighten and loosen the threaded components on both sides of the blade on the impeller surface, which is time-consuming and laborious, and the thinner blades in a narrow space are easily damaged by the operation actions.

[0005] Therefore, it is necessary to design and transform the TiAl low-pressure turbine blade repair tooling that can be flipped. Summary of the Utility Model

[0006] To solve the problems raised in the above-mentioned background art, the purpose of the present utility model is to provide a reversible repair tooling for TiAl low-pressure turbine blades, which has the advantage of being convenient for disassembly and assembly, and solves the problems that the connection method of the existing impeller tooling is relatively single, mainly fixed by screw connection, and during the disassembly and assembly process, users need to repeatedly loosen and tighten the screw components on both sides of the blades on the surface of the impeller, which is time-consuming and laborious, and the thinner blades in the narrow space are easily damaged by the operation actions.

[0007] To achieve the above object, the present utility model provides the following technical solution: A reversible repair tooling for TiAl low-pressure turbine blades, including a base;

[0008] A connecting ring arranged on the top of the base;

[0009] An impeller workpiece arranged inside the connecting ring;

[0010] Fixed structures are arranged on both sides of the inner wall of the connecting ring. The fixed structure includes brackets fixedly connected to both sides of the inner wall of the connecting ring. A sleeve is sleeved on the surface of the bracket, and the sleeve is slidably connected to the bracket. One side of the sleeve away from the bracket extends to both sides of the impeller workpiece and is inserted into the interior of the impeller workpiece. A transmission structure is arranged on the surface of the connecting ring, and the transmission structure can drive the sleeve to move.

[0011] Preferably, columns are fixedly connected to the four corners of the top of the base. Two parallel limiting rings are fixedly connected to the side of the column away from the base. A supporting ring located inside the limiting ring is fixedly connected to the top of the connecting ring, and the supporting ring can rotate inside the limiting ring.

[0012] Preferably, the transmission structure includes a toothed ring arranged around the surface of the connecting ring. Connecting blocks are fixedly connected to both sides of the bottom of the toothed ring. A crank is movably connected to the surface of the connecting block through a pin shaft. One side of the crank away from the connecting block extends to the outside of the sleeve and is movably connected to the sleeve through a pin shaft.

[0013] Preferably, a slider is fixedly connected to the outer surface of the connecting ring. The slider extends into the toothed ring and is slidably connected to the toothed ring. A reinforcing rib is fixedly connected to the outer surface of the column. A transmission motor is fixedly connected to the surface of the reinforcing rib. The output end of the transmission motor is fixedly connected to a gear, and the gear meshes with the toothed ring.

[0014] Preferably, an electric telescopic rod is fixedly connected to the top of the base. A wheel disc is sleeved on the output end of the electric telescopic rod. A connecting plate is fixedly connected to the top of the wheel disc. The top of the connecting plate is fixedly connected to the bottom of the toothed ring.

[0015] Preferably, both sides of the output end of the electric telescopic rod are fixedly connected with transmission rings, and the transmission rings are located on both sides of the wheel disc.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. By arranging a fixing structure and a sleeve on the inner wall of the connecting ring, the sleeve can be slidably sleeved on the bracket and inserted into the impeller workpiece, which can provide effective fixation for the impeller workpiece, allowing the position of the impeller workpiece to be stably maintained during the repair process, preventing it from moving or rotating, thereby improving the accuracy and safety of the repair work.

[0018] 2. Through the combined design of the column, the limiting ring and the supporting ring, the connecting ring can rotate freely on the horizontal plane. The rotation function allows for all-round repair operations on the impeller workpiece without moving the entire tooling or workpiece, improving the flexibility and efficiency of the repair work. At the same time, the limiting ring also provides a limit to the rotation range of the connecting ring, ensuring stability and safety during the rotation process.

[0019] 3. Through the combination of the gear ring, the connecting block, the crank and the sleeve, precise control of the position of the sleeve is achieved. When the driving motor drives the gear to rotate, the gear ring rotates accordingly. Through the transmission of the crank, the sleeve is driven to slide on the bracket, thereby realizing the fastening or loosening of the impeller workpiece.

[0020] 4. Through the design of the slider, the gear ring can rotate smoothly on the connecting ring, while ensuring the stability of the transmission. The addition of the reinforcing rib enhances the bearing capacity of the column, preventing deformation or damage caused by the weight of the tooling or the operating force. The use of the driving motor realizes the automatic control of the transmission structure, improving the convenience and accuracy of the operation, reducing the errors and labor intensity of manual operation.

[0021] 5. Through the design of the electric telescopic rod, the height of the gear ring can be quickly adjusted to meet different repair requirements. The combination of the wheel disc and the connecting plate ensures a firm connection between the electric telescopic rod and the gear ring, preventing shaking or falling caused by height adjustment.

[0022] 6. Through the design of the transmission ring, it can be used to further stabilize the output end of the electric telescopic rod, preventing unnecessary shaking or deviation during the working process. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the present utility model;

[0024] Figure 2 is a front view structural diagram of the present utility model;

[0025] Figure 3 is a schematic diagram of the partial structure of the present utility model;

[0026] Figure 4 is a top view schematic diagram of the partial structure of the present utility model.

[0027] In the figure: 1, base; 2, connecting ring; 3, impeller workpiece; 4, fixing structure; 5, bracket; 6, sleeve; 7, transmission structure; 8, column; 9, limiting ring; 10, support ring; 11, tooth ring; 12, connecting block; 13, crank; 14, slider; 15, reinforcing rib; 16, drive motor; 17, gear; 18, electric telescopic rod; 19, wheel disc; 20, connecting plate; 21, transmission ring. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0029] As Figures 1 to 4 shown, a TiAl low-pressure turbine blade repair tooling capable of being flipped provided by the present utility model includes a base 1;

[0030] a connecting ring 2 provided on the top of the base 1;

[0031] an impeller workpiece 3 provided inside the connecting ring 2;

[0032] On both sides of the inner wall of the connecting ring 2, there are fixing structures 4. The fixing structure 4 includes brackets 5 fixedly connected to both sides of the inner wall of the connecting ring 2. A sleeve 6 is sleeved on the surface of the bracket 5. The sleeve 6 is slidably connected to the bracket 5. One side of the sleeve 6 away from the bracket 5 extends to both sides of the impeller workpiece 3 and is inserted into the inside of the impeller workpiece 3. A transmission structure 7 is provided on the surface of the connecting ring 2, and the transmission structure 7 can drive the sleeve 6 to move.

[0033] Referring to Figure 2 , columns 8 are fixedly connected to the four corners of the top of the base 1. Two parallel limiting rings 9 are fixedly connected to one side of the column 8 away from the base 1. A support ring 10 located inside the limiting ring 9 is fixedly connected to the top of the connecting ring 2, and the support ring 10 can rotate inside the limiting ring 9.

[0034] As a technical optimization solution of the present utility model, through the combined design of the column 8, the limit ring 9 and the support ring 10, the connecting ring 2 can rotate freely on the horizontal plane. The rotation function allows for all-round repair operations on the impeller workpiece 3 without moving the entire tooling or workpiece, improving the flexibility and efficiency of the repair work. At the same time, the limit ring 9 also provides a limit to the rotation range of the connecting ring 2, ensuring the stability and safety during the rotation process.

[0035] Reference Figure 4 , the transmission structure 7 includes a toothed ring 11 arranged around the surface of the connecting ring 2. Both sides of the bottom of the toothed ring 11 are fixedly connected with connecting blocks 12. The surface of the connecting block 12 is movably connected with a crank 13 through a pin shaft. One side of the crank 13 away from the connecting block 12 extends to the outside of the sleeve 6 and is movably connected with the sleeve 6 through a pin shaft.

[0036] As a technical optimization solution of the present utility model, through the combination of the toothed ring 11, the connecting block 12, the crank 13 and the sleeve 6, precise control of the position of the sleeve 6 is achieved. When the drive motor 16 drives the gear 17 to rotate, the toothed ring 11 rotates accordingly. Through the transmission action of the crank 13, the sleeve 6 is driven to slide on the bracket 5, thereby realizing the tightening or loosening of the impeller workpiece 3.

[0037] Reference Figure 4 , the outer surface of the connecting ring 2 is fixedly connected with a slider 14. The slider 14 extends into the toothed ring 11 and is slidably connected with the toothed ring 11. The outer surface of the column 8 is fixedly connected with a reinforcing rib 15. The surface of the reinforcing rib 15 is fixedly connected with a drive motor 16. The output end of the drive motor 16 is fixedly connected with a gear 17. The gear 17 meshes with the toothed ring 11.

[0038] As a technical optimization solution of the present utility model, through the design of the slider 14, the toothed ring 11 can rotate smoothly on the connecting ring 2, while ensuring the stability of the transmission. The addition of the reinforcing rib 15 enhances the load-bearing capacity of the column 8, preventing deformation or damage caused by the weight of the tooling or the operating force. The use of the drive motor 16 realizes the automatic control of the transmission structure 7, improving the convenience and accuracy of the operation, and reducing the errors and labor intensity of manual operation.

[0039] Reference Figure 2 , the top of the base 1 is fixedly connected with an electric telescopic rod 18. The output end of the electric telescopic rod 18 is sleeved with a wheel disc 19. The top of the wheel disc 19 is fixedly connected with a connecting plate 20. The top of the connecting plate 20 is fixedly connected with the bottom of the toothed ring 11.

[0040] As a technical optimization solution of the present utility model, the design of the electric telescopic rod 18 allows for quick adjustment of the height of the toothed ring 11 to meet different repair requirements. The combination of the wheel disc 19 and the connecting plate 20 ensures a stable connection between the electric telescopic rod 18 and the toothed ring 11, preventing shaking or detachment caused by height adjustment.

[0041] Reference Figure 4 , on both sides of the output end of the electric telescopic rod 18, there are fixedly connected transmission rings 21, and the transmission rings 21 are located on both sides of the wheel disc 19.

[0042] As a technical optimization solution of the present utility model, the design of the transmission ring 21 may be used to further stabilize the output end of the electric telescopic rod 18, preventing unnecessary shaking or deviation during its operation.

[0043] The working principle and usage process of the present utility model are as follows: First, place the impeller workpiece 3 to be repaired inside the connecting ring 2, and then start the electric telescopic rod 18. The output end of the electric telescopic rod 18 drives the toothed ring 11 to move upward through the wheel disc 19. During the movement of the toothed ring 11, the connecting block 12 is used to squeeze the crank 13, so that the crank 13 pushes the sleeve 6 to move inward and insert into the impeller workpiece 3. When the transmission motor 16 is started, the gear 17 at its output end meshes with the toothed ring 11, driving the toothed ring 11 to rotate. The toothed ring 11 transmits the power to the connecting ring 2 through the slider 14, so that the connecting ring 2 drives the impeller workpiece 3 to rotate synchronously through the internal sleeve 6, thereby achieving the effect of flipping and moving the impeller workpiece 3.

[0044] In summary, for this reversible TiAl low-pressure turbine blade repair tooling, by providing the fixing structure 4 and the sleeve 6 on the inner wall of the connecting ring 2, the sleeve 6 can be slidably sleeved on the bracket 5 and inserted into the impeller workpiece 3, which can effectively fix the impeller workpiece 3, allowing the position of the impeller workpiece 3 to be stably maintained during the repair process, preventing it from moving or rotating, thereby improving the accuracy and safety of the repair work.

[0045] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0046] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A reversible repair tooling for TiAl low-pressure turbine blades, comprising a base (1); A connecting ring (2) arranged on the top of the base (1); An impeller workpiece (3) arranged inside the connecting ring (2); It is characterized in that: Fixed structures (4) are arranged on both sides of the inner wall of the connecting ring (2). The fixed structure (4) includes brackets (5) fixedly connected to both sides of the inner wall of the connecting ring (2). A sleeve (6) is sleeved on the surface of the bracket (5). The sleeve (6) is slidably connected to the bracket (5). One side of the sleeve (6) away from the bracket (5) extends to both sides of the impeller workpiece (3) and is inserted into the interior of the impeller workpiece (3). A transmission structure (7) is arranged on the surface of the connecting ring (2), and the transmission structure (7) can drive the sleeve (6) to move.

2. The repair tooling for a reversible TiAl low-pressure turbine blade according to claim 1, characterized in that: Four corners of the top of the base (1) are fixedly connected with columns (8). Two parallel limiting rings (9) are fixedly connected to one side of the column (8) away from the base (1). A support ring (10) located inside the limiting ring (9) is fixedly connected to the top of the connecting ring (2), and the support ring (10) can rotate inside the limiting ring (9).

3. The repair tooling for a reversible TiAl low-pressure turbine blade according to claim 2, wherein: The transmission structure (7) includes a toothed ring (11) arranged around the surface of the connecting ring (2). Connecting blocks (12) are fixedly connected to both sides of the bottom of the toothed ring (11). A crank (13) is movably connected to the surface of the connecting block (12) through a pin shaft. One side of the crank (13) away from the connecting block (12) extends to the outside of the sleeve (6) and is movably connected to the sleeve (6) through a pin shaft.

4. A rework tool for a reversible TiAl low-pressure turbine blade according to claim 3, characterized in that: A slider (14) is fixedly connected to the outer surface of the connecting ring (2). The slider (14) extends into the interior of the toothed ring (11) and is slidably connected to the toothed ring (11). A reinforcing rib (15) is fixedly connected to the outer surface of the column (8). A transmission motor (16) is fixedly connected to the surface of the reinforcing rib (15). A gear (17) is fixedly connected to the output end of the transmission motor (16), and the gear (17) meshes with the toothed ring (11).

5. A repairable tooling for TiAl low-pressure turbine blades that can be flipped according to claim 3, characterized in that: An electric telescopic rod (18) is fixedly connected to the top of the base (1). A wheel disc (19) is sleeved on the output end of the electric telescopic rod (18). A connecting plate (20) is fixedly connected to the top of the wheel disc (19), and the top of the connecting plate (20) is fixedly connected to the bottom of the toothed ring (11).

6. A repairable TiAl low-pressure turbine blade flipping tooling according to claim 5, characterized in that: Transmission rings (21) are fixedly connected to both sides of the output end of the electric telescopic rod (18), and the transmission rings (21) are located on both sides of the wheel disc (19).

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