A blade width measuring mechanism

Abstract

This utility model provides a blade width measuring mechanism, belonging to the field of aero-engine technology. The blade width measuring mechanism includes a mounting base plate, a support seat fixed at the top center of the mounting base plate, and a shaft positioned near the mounting base plate. A first support plate and a second support plate are rotatably connected to the shaft. A position sensor and a displacement sensor are respectively mounted on the first and second support plates. A positioning cylinder and a mounting assembly are mounted on the top of the support seat. The mounting assembly is used to fix the blade. The mounting assembly includes a mounting block, a first placement block, and a second placement block. The mounting block is positioned on the top of the support seat, and the first and second placement blocks are fixed to the mounting block. This mechanism solves the problems of current measurement methods, which require high operator skill, cannot guarantee measurement consistency, stability, and accuracy, and are prone to errors and inefficiency.

Description

Technical Field

[0001] This utility model belongs to the field of aero-engine technology, and specifically relates to a blade width measuring mechanism. Background Technology

[0002] Blades are widely used in aero-engines. For example, during engine operation, the gaps between high-pressure rotor blades provide space for thermal expansion, preventing friction and damage caused by thermal expansion. The gaps ensure that the blades and casing do not directly contact each other during high-speed rotation, reducing friction and wear and extending product life. Appropriate gaps optimize the aerodynamic performance of airflow through the blades, reducing leakage and improving compressor efficiency; excessive gaps increase leakage and reduce compression efficiency, while insufficient gaps may cause friction. The gaps also provide a buffer for blade vibration during high-speed rotation, preventing collisions between the blades and casing due to vibration. Finally, the gaps can compensate for minor errors in manufacturing and assembly.

[0003] The current measurement method involves operators manually measuring with calipers, recording the data, and then performing calculations. This manual measurement requires highly skilled operators, and the consistency, stability, and accuracy of the measurements cannot be guaranteed. Furthermore, the manual data recording process is prone to errors and inefficient. Utility Model Content

[0004] In view of this, the present invention provides a blade width measuring mechanism that can solve the problems of current measurement methods, which require high operator skill, cannot guarantee the consistency, stability and accuracy of measurement, and are prone to errors and inefficient in the process of manually recording data.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a blade width measuring mechanism, which includes a mounting base plate, a support seat fixed at the top center of the mounting base plate, a shaft arranged near the mounting base plate, a first support plate and a second support plate rotatably connected to the shaft, and an in-situ sensor and a displacement sensor respectively arranged on the first support plate and the second support plate; a positioning cylinder and a mounting assembly are arranged on the top of the support seat, and the mounting assembly is used to fix the blade.

[0007] Based on the above technical solution, the blade width measuring mechanism of this utility model can be further improved as follows:

[0008] The support base has an H-shaped structure with hollow structures at both the bottom and top.

[0009] Furthermore, the mounting assembly includes a mounting block, a first placement block, and a second placement block. The mounting block is disposed on the top of the support base, and the first placement block and the second placement block are respectively fixed on the mounting block for direct contact with the blade.

[0010] Furthermore, a positioning cylinder is provided between the mounting block and the top hollow position of the support base. The bottom of the positioning cylinder is fixedly connected to the support base, and the top is connected to the mounting block, which is used to drive the mounting block to move.

[0011] Furthermore, a first measuring block and a second measuring block are respectively provided on the first placement block and the second placement block, and a displacement sensor is installed on the second measuring block.

[0012] Furthermore, an in-situ sensor is provided on one side of the mounting block.

[0013] Furthermore, the clamping cylinder is fixed in the hollow structure at the bottom of the support base, and a first cylinder connector and a second cylinder connector are respectively provided at both ends of the cylinder. A first stop block and a second stop block are respectively provided on the top of the mounting base plate on both sides of the first support plate and the second support plate. The first cylinder connector and the second cylinder connector are respectively connected to the first stop block and the second stop block.

[0014] Furthermore, the displacement sensor has a resolution of 0.1µm and an accuracy of 1µm.

[0015] Furthermore, the first stop and the second stop are used to limit the movement of the clamping cylinder when it extends.

[0016] Furthermore, the in-situ sensor is used to detect whether the workpiece is in place.

[0017] The beneficial effects of adopting the above-mentioned improvement scheme are: the mounting base plate serves as the foundation of the entire measuring mechanism, providing stable support.

[0018] The support base is installed at the top center of the base plate. Its H-shaped structure with a hollow design reduces unnecessary weight and improves structural stability. The hollow structure at the top and bottom helps save materials and provides internal space for the placement of cylinders and other components.

[0019] The shaft is located on the support base near the mounting plate, providing a central axis for the rotating support plate. This shaft configuration ensures smooth and accurate rotation.

[0020] The first and second support plates are rotatably connected to the shaft, allowing them to adapt to different blade width measurement requirements through rotation. These support plates are equipped with in-situ sensors and displacement sensors, enabling precise measurements during blade placement.

[0021] The positioning cylinder is located at the top of the support base and its function is to drive the mounting block to accurately position the blade. The positioning cylinder is connected to the bottom of the support base and can push the mounting block to move, so that the blade can be measured in the correct position.

[0022] The mounting assembly consists of a mounting block and first and second placement blocks. The mounting block is used to secure the entire assembly. The placement blocks are in direct contact with the blades, ensuring the blades are in a stable position and will not shift during measurement.

[0023] The first and second measuring blocks correspond to the first and second placement blocks, respectively, providing a precise contact surface for measuring the blade width. A displacement sensor is mounted on the second measuring block to detect the actual width of the blade.

[0024] An in-place sensor is mounted on one side of the mounting block to detect whether the workpiece is in position. If the blade is not correctly positioned, the system can use this sensor to determine and adjust it.

[0025] The clamping cylinder is fixed in the hollow structure at the bottom of the support base. It can evenly apply pressure to the blades through the cylinder connector, ensuring that the measurement accuracy is not affected by slight shaking or loosening of the blades. The first and second stops on both sides act as limiters to prevent the cylinder from extending too far and causing mechanical damage.

[0026] The first and second stops act as limiters during the operation of the clamping cylinder to prevent excessive clamping force from damaging the system.

[0027] The displacement sensor has a resolution of 0.1 micrometers and an accuracy of 1 micrometer, enabling it to accurately measure minute changes in blade width. This means that even very subtle dimensional differences can be precisely captured and recorded by the system.

[0028] Compared with the prior art, the beneficial effects of the blade width measuring mechanism provided by this utility model are:

[0029] 1. Automatically measures blade width, resulting in high efficiency;

[0030] The design of the mounting base plate, support seat, and rotating support plate enables automatic fixing and rapid positioning of the blades.

[0031] The positioning cylinder and the clamping cylinder work together to automatically clamp and position the blades without the need for repeated manual adjustments.

[0032] The in-situ sensor automatically detects the workpiece position, ensuring that the measurement action is initiated in a timely and accurate manner, greatly improving measurement efficiency.

[0033] 2. Accurate measurement;

[0034] A high-precision displacement sensor (0.1μm resolution, 1μm accuracy) is used in conjunction with the first and second measuring blocks to ensure high accuracy and high repeatability of blade width measurement data.

[0035] The H-shaped support structure and the stable rotational connection design of the shaft ensure stable support for the sensor and measuring block, reducing measurement errors.

[0036] The stop block limit and the stable clamping force of the clamping cylinder prevent the blade from shaking, further ensuring the accuracy of the measurement.

[0037] 3. Automatically upload measurement data, the system fits the data and outputs the optimal blade arrangement order, and the measurement data is traceable;

[0038] With the high-precision measurement data collected by the sensors, the system can automatically upload and save the measurement results in real time, realizing automated data management.

[0039] The automated data processing module can perform fitting analysis based on the collected data, optimize the blade arrangement sequence, and improve the efficiency and quality of subsequent processes.

[0040] The complete recording and traceability of measurement data facilitates quality control and production tracking, thereby improving product reliability and management level.

[0041] 4. Simple structure and easy maintenance.

[0042] The H-shaped support design balances lightness and strength, with a compact and reasonable structure that facilitates maintenance and component replacement.

[0043] The modular installation components (installation block, placement block, measurement block) are designed for easy individual disassembly and maintenance.

[0044] The locations of key components such as sensors and cylinders are clearly defined, facilitating rapid diagnosis and repair and reducing downtime. Attached Figure Description

[0045] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a schematic diagram of a blade width measuring mechanism.

[0047] Figure 2 This is a schematic diagram of the structure of a blade width measuring mechanism in use.

[0048] Figure 3 A cross-sectional view of a blade width measuring mechanism;

[0049] The attached diagram lists the components represented by each number as follows:

[0050] 1. Mounting base plate; 10. In-position sensor; 11. Displacement sensor; 12. Second measuring block; 13. Second support plate; 14. First cylinder connector; 15. Second cylinder connector; 16. Cylinder mounting plate; 17. Mounting block; 18. First stop block; 19. Second stop block; 2. Support base; 20. Clamping cylinder; 3. Shaft; 4. Positioning cylinder; 6. First support plate; 7. First measuring block; 8. First placement block; 9. Second placement block. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0052] like Figure 1-2 The image shows a first embodiment of a blade width measuring mechanism provided by this utility model. In this embodiment, it includes a mounting base plate 1, a support seat 2 fixed at the top center of the mounting base plate 1, a shaft 3 arranged near the mounting base plate 1 on the support seat 2, a first support plate 6 and a second support plate 13 rotatably connected to the shaft 3, and an in-situ sensor 10 and a displacement sensor 11 respectively arranged on the first support plate 6 and the second support plate 13; a positioning cylinder 4 and a mounting assembly are arranged on the top of the support seat 2, and the mounting assembly is used to fix the blade.

[0053] In the above technical solution, the support base 2 has an H-shaped structure, with hollow structures at both the bottom and top.

[0054] Furthermore, in the above technical solution, the mounting component includes a mounting block 17, a first placement block 8, and a second placement block 9. The mounting block 17 is disposed on the top of the support base 2, and the first placement block 8 and the second placement block 9 are respectively fixed on the mounting block 17 for direct contact with the blade.

[0055] Furthermore, in the above technical solution, a positioning cylinder 4 is provided between the mounting block 17 and the top hollow position of the support base 2. The bottom of the positioning cylinder 4 is fixedly connected to the support base 2, and the top is connected to the mounting block 17, which is used to drive the mounting block 17 to move.

[0056] Furthermore, in the above technical solution, the first placement block 8 and the second placement block 9 are respectively provided with the first measuring block 7 and the second measuring block 12, and the second measuring block 12 is equipped with the displacement sensor 11.

[0057] Furthermore, in the above technical solution, an in-situ sensor 10 is provided on one side of the mounting block 17.

[0058] Furthermore, in the above technical solution, the clamping cylinder 20 is fixed in the bottom hollow structure of the support base 2, and a first cylinder connector 14 and a second cylinder connector 15 are respectively provided at both ends of the cylinder. A first stop block 18 and a second stop block 19 are respectively provided on both sides of the first support plate 6 and the second support plate 13 on the top of the mounting base plate 1. The first cylinder connector 14 and the second cylinder connector 15 are respectively connected to the first stop block 18 and the second stop block 19.

[0059] Furthermore, in the above technical solution, the displacement sensor 11 has a resolution of 0.1µm and an accuracy of 1µm.

[0060] Furthermore, in the above technical solution, the first stop 18 and the second stop 19 are used to limit the movement of the clamping cylinder 20 when it extends.

[0061] Furthermore, in the above technical solution, the in-position sensor 10 is used to detect whether the workpiece is in position.

[0062] Specifically, the principle of this utility model is: when in use,

[0063] 1. An external robotic arm carries the blade into the station and places the blade directly above the first placement block 8 and the second placement block 9 from the side;

[0064] 2. The robotic arm releases the blade, which then contacts and falls into place with the first placement block 8 and the second placement block 9;

[0065] 3. The positioning cylinder 4 extends, driving the positioning block 17 to extend and press against the lower end of the blade, fixing the blade between the positioning block 17 and the first placement block 8 and the second placement block 9;

[0066] 4. The clamping cylinder 20 retracts, the first support plate 6 and the second support plate 13 rotate around the shaft 3 at the same time, and the first measuring block 7 and the second measuring block 12 installed at their ends close together until the blade is clamped.

[0067] 5. The displacement sensor 11 installed on the second measuring block 12 comes into contact with the front end of the first measuring block 7 and is compressed, and the value "A" is read.

[0068] The first stop 18 and the second stop 19 are used to limit the extension of the clamping cylinder 20. The presence sensor 10 is used to detect whether the workpiece is in position.

[0069] Before use, this mechanism requires calibration using a standard block. For example, if a calibration block with a known width of X is used for measurement, the reading is Y. Then, the width of the blade is measured as B = X - Y + A. Based on the chord width definition in the blade drawing, the distance relationship between virtual points in space is converted into the distance between measurement surfaces. The difference is measured by comparing the values ​​with standard parts, and the actual chord width is calculated through an online measurement platform. This determines whether the measured data meets the process requirements, ensuring the fit between blades after assembly.

Claims

1. A blade width measuring mechanism, characterized in that, The system includes a mounting base plate (1), a support seat (2) fixed at the top center of the mounting base plate (1), a shaft (3) provided near the mounting base plate (1) on the support seat (2), a first support plate (6) and a second support plate (13) rotatably connected to the shaft (3), and an in-situ sensor (10) and a displacement sensor (11) respectively provided on the first support plate (6) and the second support plate (13); a positioning cylinder (4) and a mounting assembly are provided on the top of the support seat (2), and the mounting assembly is used to fix the blade.

2. The blade width measuring mechanism according to claim 1, characterized in that, The support base (2) has an H-shaped structure, with hollow structures at the bottom and top.

3. The blade width measuring mechanism according to claim 2, characterized in that, The mounting assembly includes a mounting block (17), a first placement block (8), and a second placement block (9). The mounting block (17) is disposed on the top of the support base (2). The first placement block (8) and the second placement block (9) are fixed on the mounting block (17) respectively for direct contact with the blade.

4. The blade width measuring mechanism according to claim 3, characterized in that, A positioning cylinder (4) is provided between the mounting block (17) and the top hollow position of the support base (2). The bottom of the positioning cylinder (4) is fixedly connected to the support base (2), and the top is connected to the mounting block (17) to drive the mounting block (17) to move.

5. The blade width measuring mechanism according to claim 4, characterized in that, The first placement block (8) and the second placement block (9) are respectively provided with a first measuring block (7) and a second measuring block (12), and a displacement sensor (11) is installed on the second measuring block (12).

6. The blade width measuring mechanism according to claim 5, characterized in that, An in-situ sensor (10) is provided on one side of the mounting block (17).

7. The blade width measuring mechanism according to claim 6, characterized in that, The clamping cylinder (20) is fixed in the bottom hollow structure of the support base (2), and a first cylinder connector (14) and a second cylinder connector (15) are respectively provided at both ends. A first stop block (18) and a second stop block (19) are respectively provided on both sides of the first support plate (6) and the second support plate (13) on the top of the mounting base plate (1). The first cylinder connector (14) and the second cylinder connector (15) are respectively connected to the first stop block (18) and the second stop block (19).

8. The blade width measuring mechanism according to claim 7, characterized in that, The displacement sensor (11) has a resolution of 0.1µm and an accuracy of 1µm.

9. A blade width measuring mechanism according to claim 8, characterized in that, The first stop (18) and the second stop (19) are used to limit the extension of the clamping cylinder (20).

10. A blade width measuring mechanism according to claim 9, characterized in that, The in-situ sensor (10) is used to detect whether the workpiece is in place.

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