Tool clamp for low-pressure turbine shaft

Abstract

The utility model discloses a work fixture for a low-pressure turbine shaft, which comprises a base, a moving block arranged on the base, a supporting disc arranged on the moving block, a first clamping assembly arranged on the supporting disc, a second clamping assembly arranged on the supporting disc, and a linkage assembly arranged between the first clamping assembly and the second clamping assembly. The base is provided with a driving assembly used for driving the moving blocks on the two sides to move relatively, and the moving blocks are provided with rotating assemblies used for driving the supporting disc to rotate. According to the turbine shaft clamping device, the driving assembly drives the moving blocks on the two sides to move inwards oppositely, the moving blocks drive the supporting disc to move inwards, the first clamping assembly arranged above the supporting disc can make contact with the turbine shaft firstly, the two moving blocks continue to move inwards, and after the first clamping assembly is extruded, the turbine shaft is clamped. The linkage assembly can drive the second clamping assemblies on the two sides to move inwards, and the second clamping assemblies clamp and fix the upper side and the lower side of the turbine shaft.

Description

Technical Field

[0001] This utility model mainly relates to the field of low-pressure turbine shaft processing technology, specifically a tooling fixture for low-pressure turbine shafts. Background Technology

[0002] The turbine guide vane is a crucial structural component designed to meet the requirements of high-performance aero engines. Its structure consists of a bladed flow channel forming the main gas flow path of the turbine. A row of guide vanes and a subsequent row of rotor blades constitute a turbine stage; a multi-stage turbine is composed of multiple turbine stages. High-temperature gas enters the turbine guide vane from the annular combustion chamber outlet. The turbine guide vane compresses and deflects the high-temperature gas, driving the turbine rotor to perform work. The flow capacity of the turbine guide vane directly affects the performance of the aero engine. Controlling and adjusting the gas flow rate of the turbine guide vane is beneficial for increasing engine thrust and temperature margin, playing a key role in controlling aero engine performance.

[0003] The low-pressure turbine shaft housing is cylindrical in shape. Currently, the low-pressure turbine shaft is fixed by a fixture during machining. The existing fixture usually uses clamping blocks on both sides to press and fix the low-pressure turbine shaft. However, since the low-pressure turbine shaft is cylindrical, the actual contact area between the clamping blocks and the low-pressure turbine shaft is small, resulting in poor fixing effect. Especially when the fixture drives the low-pressure turbine shaft to rotate and change the angle for machining, it is easy to cause the low-pressure turbine shaft to shift, affecting the machining effect. Utility Model Content

[0004] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing solutions are too simplistic. It mainly provides a tooling fixture for low-pressure turbine shafts, which solves the technical problem mentioned in the background that the existing clamping blocks have a small contact area with the low-pressure turbine shaft, resulting in poor fixing effect on the low-pressure turbine shaft and easy displacement of the low-pressure turbine shaft when rotating and changing the angle during processing.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A tooling fixture for a low-pressure turbine shaft includes a base, a movable block on the base, a support plate on the movable block, a first clamping assembly on the support plate for laterally clamping and fixing the turbine shaft, a second clamping assembly on the support plate for vertically clamping and positioning the turbine shaft, a linkage assembly between the first clamping assembly and the second clamping assembly, a driving assembly on the base for driving the two movable blocks to move relative to each other, and a rotating assembly on the movable block for driving the support plate to rotate.

[0007] Preferably, the drive assembly includes a first motor, which is mounted on the base. A double-ended screw is fixedly installed at the output end of the first motor. The double-ended screw is rotatably connected inside the base, and a movable block is threaded onto both ends of the double-ended screw.

[0008] Preferably, the rotating assembly includes a second motor, which is mounted on the moving block. A rotating rod is fixedly installed at the output end of the second motor and is rotatably connected to the moving block. A support plate is provided at the end of the rotating rod away from the second motor.

[0009] Preferably, the first clamping assembly includes a telescopic sleeve rod, which is disposed on a support plate. A top block is provided at the end of the telescopic sleeve rod away from the support plate, and a spring is sleeved on the telescopic sleeve rod.

[0010] Preferably, the support plate is provided with a limiting block, and the telescopic sleeve is disposed inside the limiting block.

[0011] Preferably, the second clamping assembly includes a lifting rod, which is disposed on a support plate, a support block is disposed on the lifting rod, and a clamping block is disposed on the support block.

[0012] Preferably, the linkage component includes a transmission rod, which is slidably connected to a limiting block. A linkage rod is provided on the transmission rod, and the end of the linkage rod away from the transmission rod is connected to a support block.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the drive component drives the moving blocks on both sides to move inward relative to each other, the moving blocks drive the support plate to move inward, the first clamping component set above the support plate will first contact the turbine shaft, and continue to move two moving blocks inward. After the first clamping component is squeezed, the linkage component will drive the second clamping components on both sides to move inward. The second clamping components clamp and fix the turbine shaft on the upper and lower sides. In this way, the first clamping component clamps and fixes it laterally and the second clamping component clamps and fixes it longitudinally. Even if the cylindrical turbine shaft is clamped and fixed, it can be stably fixed, preventing the turbine shaft from shifting during rotation.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0015] Figure 1 This is a frontal three-dimensional structural diagram of the present utility model;

[0016] Figure 2 This is a top-view three-dimensional structural diagram of the present invention;

[0017] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 4 This is a three-dimensional structural diagram of the clamping component of this utility model;

[0019] Figure 5 This is a schematic diagram of the internal structure of the limiting block in this utility model;

[0020] The diagram is marked as follows:

[0021] 1. Base; 2. First motor; 3. Double-ended screw; 4. Moving block; 5. Second motor; 6. Rotating rod; 7. Support plate; 8. Lifting rod; 9. Support block; 10. Clamping block; 11. Top block; 12. Telescopic sleeve rod; 13. Spring; 14. Transmission rod; 15. Limiting block; 16. Linkage rod. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] Please refer to the appendix carefully. Figures 1-5 A tooling fixture for a low-pressure turbine shaft includes a base 1, a movable block 4 on the base 1, a support plate 7 on the movable block 4, a first clamping assembly on the support plate 7 for laterally clamping and fixing the turbine shaft, a second clamping assembly on the support plate 7 for vertically clamping and positioning the turbine shaft, a linkage assembly between the first clamping assembly and the second clamping assembly, a driving assembly on the base 1 for driving the two movable blocks 4 to move relative to each other, and a rotating assembly on the movable block 4 for driving the support plate 7 to rotate.

[0026] The specific operating procedure of this utility is as follows: Place the turbine shaft above the center of the base 1, start the drive assembly, the drive assembly drives the moving blocks 4 on both sides to move inward relative to each other, the moving blocks 4 on both sides drive the support plate 7 to move inward relative to each other, the support plate 7 on both sides drives the first clamping assembly to contact the protrusion on the turbine shaft housing, the moving blocks 4 continue to move inward, the first clamping assembly presses inward, and through the linkage assembly drives the second clamping assemblies set on both sides to move inward relative to each other. In this way, the first clamping assembly clamps and fixes the turbine shaft laterally, and the second clamping assembly clamps and fixes the turbine shaft longitudinally. When it is necessary to change the angle for machining the turbine shaft, start the rotation assembly, the rotation assembly drives the support plate 7 to rotate, thereby driving the turbine shaft to rotate and switch the surface for machining.

[0027] Please refer to Figure 3 The drive assembly includes a first motor 2, which is mounted on a base 1. A double-ended screw 3 is fixedly installed at the output end of the first motor 2. The double-ended screw 3 is rotatably connected inside the base 1, and a moving block 4 is threaded onto both ends of the double-ended screw 3.

[0028] Start the first motor 2, which drives the double-headed screw 3 to rotate. The two moving blocks 4 on both sides are respectively provided with threaded holes that are compatible with the double-headed screw 3. The rotation of the double-headed screw 3 drives the moving blocks 4 on both sides to move inward relative to each other.

[0029] Please refer to Figure 3 The rotating component includes a second motor 5, which is mounted on the moving block 4. A rotating rod 6 is fixedly installed at the output end of the second motor 5 and is rotatably connected to the moving block 4. A support plate 7 is provided at the end of the rotating rod 6 away from the second motor 5.

[0030] Start the second motor 5, which drives the rotating rod 6 to rotate. The rotating rod 6 drives the support plate 7 to rotate. The support plate 7 drives the turbine shaft that is clamped and fixed to rotate through the first clamping assembly and the second clamping assembly.

[0031] Please refer to Figure 4 and Figure 5 The first clamping assembly includes a telescopic sleeve 12, which is mounted on a support plate 7. A top block 11 is provided at the end of the telescopic sleeve 12 away from the support plate 7. A spring 13 is sleeved on the telescopic sleeve 12. A limiting block 15 is provided on the support plate 7, and the telescopic sleeve 12 is located inside the limiting block 15. The second clamping assembly includes a lifting rod 8, which is mounted on the support plate 7. A support block 9 is provided on the lifting rod 8, and a clamping block 10 is provided on the support block 9. The linkage assembly includes a transmission rod 14, which is slidably connected to the limiting block 15. A linkage rod 16 is provided on the transmission rod 14, and the end of the linkage rod 16 away from the transmission rod 14 is connected to the support block 9.

[0032] The support plate 7 moves inward relative to the top block 11, which pushes against both sides of the turbine shaft. The support plate 7 continues to move, and the top block 11 compresses the telescopic sleeve 12 and the spring 13. At the same time, the top block 11 drives the transmission rod 14 to move inward. The transmission rod 14 pulls the support block 9 inward through the linkage rod 16. The support blocks 9 on the upper and lower sides drive the clamping block 10 to move inward to clamp and fix the turbine shaft housing protrusion. The lifting rod 8 is slidably connected to the support plate 7 to limit the linear lifting and lowering movement of the support block 9.

[0033] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A tooling fixture for a low-pressure turbine shaft, comprising a base (1), characterized in that: The base (1) is provided with a movable block (4), the movable block (4) is provided with a support plate (7), the support plate (7) is provided with a first clamping component for horizontally clamping and fixing the turbine shaft, the support plate (7) is provided with a second clamping component for vertically clamping and positioning the turbine shaft, a linkage component is provided between the first clamping component and the second clamping component, the base (1) is provided with a driving component for driving the two movable blocks (4) to move relative to each other, and the movable block (4) is provided with a rotating component for driving the support plate (7) to rotate.

2. The tooling fixture for a low-pressure turbine shaft according to claim 1, characterized in that: The drive assembly includes a first motor (2), which is mounted on a base (1). A double-headed screw (3) is fixedly installed at the output end of the first motor (2). The double-headed screw (3) is rotatably connected inside the base (1). Moving blocks (4) are threaded onto both ends of the double-headed screw (3).

3. A tooling fixture for a low-pressure turbine shaft according to claim 2, characterized in that: The rotating assembly includes a second motor (5), which is mounted on the moving block (4). A rotating rod (6) is fixedly installed at the output end of the second motor (5), and the rotating rod (6) is rotatably connected to the moving block (4). A support plate (7) is provided at the end of the rotating rod (6) away from the second motor (5).

4. A tooling fixture for a low-pressure turbine shaft according to claim 1, characterized in that: The first clamping assembly includes a telescopic sleeve (12), which is mounted on a support plate (7). A top block (11) is provided at the end of the telescopic sleeve (12) away from the support plate (7), and a spring (13) is sleeved on the telescopic sleeve (12).

5. A tooling fixture for a low-pressure turbine shaft according to claim 4, characterized in that: A limiting block (15) is provided on the support plate (7), and the telescopic sleeve (12) is located inside the limiting block (15).

6. A tooling fixture for a low-pressure turbine shaft according to claim 5, characterized in that: The second clamping assembly includes a lifting rod (8), which is mounted on a support plate (7). A support block (9) is mounted on the lifting rod (8), and a clamping block (10) is mounted on the support block (9).

7. A tooling fixture for a low-pressure turbine shaft according to claim 6, characterized in that: The linkage assembly includes a transmission rod (14), which is slidably connected to a limiting block (15). A linkage rod (16) is provided on the transmission rod (14), and the end of the linkage rod (16) away from the transmission rod (14) is connected to a support block (9).

Images