A compressor rotor blade surface defect detection device and its detection method

Abstract

The present invention discloses a surface defect detection device and a detection method for a compressor rotor blade, belonging to the technical field of compressor rotor blade detection; the surface defect detection device for the compressor rotor blade includes a detection platform, an electric indexing plate clamping device, a top cone stop device and a flaw detection device; the cooperation of the electric indexing plate clamping device and the top cone stop device axially fixes and precisely drives the two ends of the compressor rotor to be measured; the flaw detection device is based on the ultrasonic flaw detection principle to detect the surface defects of the compressor rotor blade; compared with the existing manual flaw detection of the compressor rotor blade of an aeroengine, it can accurately collect, process and analyze the surface defects of each stage of the compressor rotor to be measured, realize the positioning of each stage of the blade and the traceability of the detection results, ensure the integrity of the measurement results, and solve the problem that the detection results of the existing manual flaw detection of the compressor rotor blade of an aeroengine are affected by subjective factors.

Description

Technical Field

[0001] The present invention belongs to the technical field of compressor rotor blade detection, and in particular relates to a compressor rotor blade surface defect detection device and a detection method thereof. Background Art

[0002] Aircraft engines are hailed as the jewel in the crown of modern industry, and the compressor is one of their primary components. A compressor is a mechanical device that transmits mechanical energy to the gas, completing the compression process of the gas working fluid in the engine's thermodynamic cycle to increase gas pressure. Compressor blades, as core engine components, account for approximately 30% of the total engine production. The manufacturing quality of the blades (dimensional accuracy, form and position tolerances, and surface quality of complex surfaces) directly impacts the engine's aerodynamic performance and service life. The characteristics of thin-walled aircraft blades and their complex spatial geometry affect their machining accuracy and surface quality to a certain extent. Detecting blade defects and ensuring high-quality production have become critical issues that urgently need to be addressed in the aviation manufacturing industry. Currently, aircraft engine compressor rotor blades are primarily inspected using manually operated portable ultrasonic surface wave flaw detectors. These flaws present technical challenges such as low automation and subjective test results. Both inspection efficiency and intelligence need to be further improved.

[0003] Therefore, conducting research and application of high-precision detection equipment and methods with multi-technology collaboration is crucial to ensuring the aerodynamic performance, safety and reliability of aircraft engines, and is of great significance to promoting high-level and high-quality development of enterprises. Summary of the Invention

[0004] In view of the deficiencies in the above-mentioned background technology, the present invention aims to provide a surface defect detection device and method for compressor rotor blades, which solves the problems of low automation, subjective influence on detection results and low detection efficiency in existing manual flaw detection of aircraft engine compressor rotor blades.

[0005] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is as follows:

[0006] On the one hand, a compressor rotor blade surface defect detection device is provided, which includes a detection platform, on which an electric indexing plate clamping device, a top cone stop device and a flaw detection device are provided;

[0007] Both ends of the compressor rotor shaft are connected to the electric indexing plate clamping device and the top cone stop device respectively, and the electric indexing plate clamping device and the top cone stop device drive the compressor rotor to rotate and move axially;

[0008] The flaw detection device includes a column arranged on one side of the compressor rotor. The bottom of the column is connected to the upper end surface of the detection platform. A support arm is provided at the top of the column. A pressing rod is vertically and movably connected to the end of the support arm. At the bottom of the pressing rod, a flaw detection probe and an ultrasonic flaw detector host are electrically connected to each other. After the pressing rod is pressed down, it drives the flaw detection probe to detect the surface defects of the compressor rotor blades, and the ultrasonic flaw detector host displays the surface defects of the compressor rotor blades.

[0009] Further, two rotating support devices are arranged between the electric indexing plate clamping device and the top cone stop device. A pair of support wheels are rotatably arranged at the top of each of the two rotating support devices. The two ends of the compressor rotor shaft are respectively arranged in the two pairs of support wheels. The axis of the support wheel is parallel to the axis of the compressor rotor shaft, and the circumferential outer wall of the support wheel contacts the circumferential outer wall of the compressor rotor shaft.

[0010] The arrangement of the two rotating support devices realizes the vertical rolling support for the two ends of the compressor rotor shaft, facilitating the electric indexing plate clamping device to drive the rotation of the compressor rotor shaft, so as to detect the surface defects of different blades of the compressor rotor shaft at multiple angles.

[0011] Further, as a specific setting method of the electric indexing plate clamping device, the electric indexing plate clamping device includes a first support seat. The bottom of the first support seat is fixedly connected to the detection platform. A first rolling screw module is arranged at the top of the first support seat. An electric indexing plate is arranged on the first rolling screw module. A three-jaw chuck for clamping the spline at one end of the compressor rotor shaft is arranged on the electric indexing plate. The first rolling screw module drives the electric indexing plate to move along the axis direction of the compressor rotor shaft.

[0012] Further, as a specific setting method of the top cone stop device, the top cone stop device includes a second support seat. The bottom of the second support seat is fixedly connected to the detection platform. A second rolling screw module is arranged at the top of the second support seat. A top cone is arranged on the second rolling screw module. The top cone is in tight contact with the end face of the other end of the compressor rotor shaft. The second rolling screw module drives the top cone to move along the axis direction of the compressor rotor shaft; the axis of the electric indexing plate coincides with the axis of the top cone.

[0013] The cooperation of the electric indexing plate clamping device and the top cone stop device axially fixes and precisely drives the indexing of the two ends of the compressor rotor to be measured.

[0014] Further, each of the rotary support devices includes a support frame. The bottom of the support frame is fixedly connected to the detection platform. A sliding support is vertically slidably arranged on the support frame. A driving device for driving the sliding support to reciprocate in the vertical direction is arranged at the bottom of the support frame. A pair of support wheels are rotatably arranged at the top of the sliding support. The purpose of the driving device is to adjust the position of the support wheels in the vertical direction to perform vertical rolling support on compressor rotors of different models.

[0015] Further, the bottom of the column is connected to the upper end surface of the detection platform through a third rolling screw module, and the third rolling screw module drives the column to move along the axis direction of the compressor rotor shaft.

[0016] The setting of the third rolling screw module realizes the movement of the flaw detection probe position in the flaw detection device, so as to facilitate the surface defect detection of blades at different positions on the compressor rotor.

[0017] Further, as a specific setting mode of the flaw detection device, the flaw detection probe includes two ultrasonic probes arranged horizontally at intervals and electrically connected to the ultrasonic flaw detector host;

[0018] An installation ring is arranged on the circumferential outer wall of the pressing rod. A plurality of reset springs are arranged between the installation ring and the upper end surface of the support arm; a rotary electric cylinder is arranged inside the bottom end of the pressing rod. The axis of the output shaft of the rotary electric cylinder coincides with the axis of the pressing rod, and a fixing seat is arranged on the output end of the rotary electric cylinder. A bidirectional electric cylinder is arranged on the fixing seat. The two output shafts of the bidirectional electric cylinder are horizontally arranged. A connecting plate is fixed on each of the two output shafts of the bidirectional electric cylinder. The bidirectional electric cylinder drives the two connecting plates to move towards or away from each other simultaneously; the two ultrasonic probes are respectively arranged on the inner walls of the two connecting plates.

[0019] The setting of a plurality of reset springs ensures the rebound of the pressing rod; the rotary electric cylinder is used to adjust the rotation angle of the two ultrasonic probes to meet the measurement requirements of blades of various models and sizes; at the same time, when detecting the blades, the bidirectional electric cylinder drives the two ultrasonic probes to closely adhere to the inlet and outlet edge profiles of the two sides of the blade to be detected, improving the accuracy of blade surface defect detection.

[0020] Further, the first rolling screw module, the second rolling screw module and the third rolling screw module each include two linear guide rails arranged horizontally at intervals. A rolling screw driving module is arranged between the two linear guide rails. A moving bracket is connected to the rolling screw driving module. The two ends of the moving bracket are respectively slidably matched with the two linear guide rails. The rolling screw driving module drives the moving bracket to slide along the length direction of the linear guide rail; the bottom of the electric indexing table, the top cone and the column are all fixedly connected to the upper end surface of the moving bracket.

[0021] Further, the driving device is a worm screw lift. The top of the worm screw lift is fixedly connected to the sliding support. The worm screw lift has the functions of lifting and self-locking, and is used to adjust the height of the support frame and prevent the support frame from self-dropping due to the compressor rotor under test.

[0022] On the other hand, the present invention also provides a detection method for a surface defect detection device of a compressor rotor blade, which includes:

[0023] Step 1, fix the compressor rotor under test: Place the compressor rotor under test on two rotating support devices, adjust the positions of the electric indexing plate clamping device and the top cone stop device. The electric indexing plate clamping device clamps the spline at one end of the compressor rotor shaft, and the top cone stop device abuts against the end face at the other end of the compressor rotor shaft to position the compressor rotor under test.

[0024] Step 2, select the blade on the compressor rotor under test: The electric indexing plate clamping device drives the compressor rotor under test to rotate to the detection position.

[0025] Step 3, adjust the flaw detection probe: Adjust the position of the column and the angle of the flaw detection probe to align the flaw detection probe with the inlet and outlet edges of the blade on the compressor rotor under test.

[0026] Step 4, perform surface defect detection on the selected blade: Press down the pressing rod to make the flaw detection probe closely adhere to the contour edges of the inlet and outlet sides of the blade under test. Start the flaw detection probe to collect and process the defect characteristics of the blade rotor under test, obtain the damage information on the blade surface, and upload this information to the ultrasonic flaw detector host to complete the surface defect detection work of the compressor rotor blade at the current detection position.

[0027] Step 5, perform surface defect detection on the next blade: The electric indexing plate clamping device drives the compressor rotor under test to rotate to the next detection position, and repeat Steps 2-4 to perform surface defect detection on the compressor rotor blade at the next detection position.

[0028] Step 6, perform surface defect detection on all blades: Repeat Step 5 until the surface defect detection of all blades of the compressor rotor under test is completed. Then, the electric indexing plate clamping device, the top cone stop device, and the flaw detection device are reset, and the compressor rotor under test is disassembled.

[0029] The beneficial effects of the present invention are as follows:

[0030] 1. The surface defect detection device and its detection method for a compressor rotor blade in the present invention can improve the degree of automation of surface defect detection of compressor rotor blades compared with the existing manual flaw detection of aero-engine compressor rotor blades, and improve the production efficiency and detection accuracy of the existing detection process.

[0031] 2. A surface defect detection device and its detection method for a compressor rotor blade in the present invention. After pressing down the pressing rod, the flaw detection probe is driven to detect the surface defects of the compressor rotor blade. It can accurately collect, process and analyze the surface defects of each stage of the measured compressor rotor blade, realize the positioning of each stage of the blade and the traceability of the detection results, ensure the integrity of the measurement results, and solve the problem that the detection results of the existing manual flaw detection of aero-engine compressor rotor blades are affected by subjective factors.

[0032] 3. A surface defect detection device and its detection method for a compressor rotor blade in the present invention. Through the linkage control of the electric indexing plate clamping device, the top cone stop device and the flaw detection device, the precise positioning and self-rotation of the blade rotor can be realized, and the surface defects of each stage of the measured compressor rotor blade can be accurately collected, processed and analyzed to ensure the integrity of the measurement results. Description of the Drawings

[0033] Figure 1 It is a three-dimensional structure schematic diagram of a surface defect detection device for a compressor rotor blade Figure 1 。

[0034] Figure 2 It is a three-dimensional structure schematic diagram of a surface defect detection device for a compressor rotor blade Figure 2 。

[0035] Figure 3 It is an enlarged structural schematic diagram of the connection between the pressing rod and the support arm.

[0036] Figure 4 It is a structural schematic diagram of the third rolling screw module.

[0037] Figure 5 It is an enlarged structural schematic diagram of the electric indexing plate clamping device.

[0038] Figure 6 It is an enlarged structural schematic diagram of the top cone stop device.

[0039] Figure 7 It is an enlarged structural schematic diagram of a single rotating support device.

[0040] Among them, 1. Compressor rotor; 2. Detection platform;

[0041] 3. Electric indexing plate clamping device; 31. First support seat; 32. First rolling screw module; 33. Electric indexing plate; 34. Three-jaw chuck;

[0042] 4. Top cone stop device; 41. Second support seat; 42. Second rolling screw module; 43. Top cone;

[0043] 5. Flaw detection device; 51. Column; 52. Support arm; 53. Pressing rod; 54. Flaw detection probe; 541. Ultrasonic probe; 55. Ultrasonic flaw detector host; 56. Third rolling screw module; 57. Installation ring; 58. Return spring; 59. Rotary electric cylinder; 510. Fixed seat; 511. Bidirectional electric cylinder; 512. Connecting plate;

[0044] 6. Rotary support device; 61. Support wheel; 62. Support frame; 63. Sliding support; 64. Driving device;

[0045] 7. Linear guide; 8. Rolling screw drive module; 9. Moving bracket. Specific embodiments

[0046] The specific embodiments of the present invention will be described below to facilitate those skilled in the art of the present technology to understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art of the present technology, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions created using the concept of the present invention are within the scope of protection.

[0047] As Figures 1 to 7 shown, the present invention provides a surface defect detection device for a compressor rotor blade, which includes a detection platform 2, and an electric indexing plate clamping device 3, a top cone stop device 4, and a flaw detection device 5 are arranged on the detection platform 2;

[0048] Both ends of the rotating shaft of the compressor rotor 1 are respectively connected to the electric indexing plate clamping device 3 and the top cone stop device 4, and the electric indexing plate clamping device 3 and the top cone stop device 4 drive the compressor rotor 1 to rotate and axially move;

[0049] The flaw detection device 5 includes a column 51 arranged on one side of the compressor rotor 1, the bottom of the column 51 is connected to the upper end surface of the detection platform 2, a support arm 52 is arranged at the top of the column 51, a pressing rod 53 is vertically movably connected to the end of the support arm 52, a flaw detection probe 54 and an ultrasonic flaw detector host 55 which are electrically connected to each other are arranged at the bottom of the pressing rod 53. After the pressing rod 53 is pressed down, it drives the flaw detection probe 54 to detect the surface defects of the blades of the compressor rotor 1, and the ultrasonic flaw detector host 55 displays the surface defects of the blades of the compressor rotor 1. Preferably, the ultrasonic flaw detector host 55 can also store the surface defect detection results of the blades of the compressor rotor 1, which can realize the positioning of each stage of blades and the traceability of the detection results, facilitate subsequent retrieval and viewing, and ensure the integrity of the measurement results.

[0050] As Figure 1 and Figure 7As shown, there are two rotary support devices 6 arranged between the electric indexing table clamping device 3 and the top cone stop device 4. A pair of support wheels 61 are rotatably arranged at the top of each of the two rotary support devices 6. The two ends of the shaft of the compressor rotor 1 are respectively arranged in the two pairs of support wheels 61. The axis of the support wheel 61 is parallel to the axis of the shaft of the compressor rotor 1, and the circumferential outer wall of the support wheel 61 is in contact with the circumferential outer wall of the shaft of the compressor rotor 1.

[0051] The arrangement of the two rotary support devices 6 realizes the vertical rolling support for the two ends of the shaft of the compressor rotor 1, facilitating the electric indexing table clamping device 3 to drive the shaft of the compressor rotor 1 to rotate, so as to perform surface defect detection on different blades of the shaft of the compressor rotor 1 from multiple angles.

[0052] Specifically, each rotary support device 6 includes a support frame 62. The bottom of the support frame 62 is fixedly connected to the detection platform 2. A sliding support 63 is vertically slidably arranged on the support frame 62. A driving device 64 for driving the sliding support 63 to reciprocate in the vertical direction is arranged at the bottom of the support frame 62. A pair of support wheels 61 are rotatably arranged at the top of the sliding support 63. The purpose of the driving device 64 is to adjust the position of the support wheel 61 in the vertical direction to perform vertical rolling support on compressor rotors 1 of different models.

[0053] Preferably but not limited to, the driving device 64 is a worm gear screw jack. The top of the worm gear screw jack is fixedly connected to the sliding support 63. The worm gear screw jack has the functions of lifting and self-locking, and is used to adjust the height of the support frame 62 and prevent the support frame 62 from self-lowering due to the compressor rotor 1 to be measured.

[0054] Specifically, as Figure 1 、 Figure 5 and Figure 6 shown, as a specific setting method of the electric indexing table clamping device 3, the electric indexing table clamping device 3 includes a first support seat 31. The bottom of the first support seat 31 is fixedly connected to the detection platform 2. A first rolling screw module 32 is arranged at the top of the first support seat 31. An electric indexing table 33 is arranged on the first rolling screw module 32. A three-jaw chuck 34 for clamping the spline at one end of the shaft of the compressor rotor 1 is arranged on the electric indexing table 33. The first rolling screw module 32 drives the electric indexing table 33 to move along the axis direction of the shaft of the compressor rotor 1.

[0055] Further, as a specific setting manner of the top cone stop device 4, the top cone stop device 4 includes a second support seat 41. The bottom of the second support seat 41 is fixedly connected to the detection platform 2. A second rolling screw module 42 is arranged at the top of the second support seat 41. A top cone 43 is arranged on the second rolling screw module 42. The top cone 43 is in abutting contact with the end face of the other end of the rotating shaft of the compressor rotor 1. The second rolling screw module 42 drives the top cone 43 to move along the axis direction of the rotating shaft of the compressor rotor 1. The axis of the electric indexing table 33 coincides with the axis of the top cone 43.

[0056] The cooperation of the electric indexing table clamping device 3 and the top cone stop device 4 axially fixes and precisely drives the indexing of both ends of the compressor rotor 1 to be measured.

[0057] Further, as Figure 2 and Figure 3 shown, the bottom of the column 51 is connected to the upper end face of the detection platform 2 through a third rolling screw module 56. The third rolling screw module 56 drives the column 51 to move along the axis direction of the rotating shaft of the compressor rotor 1.

[0058] The setting of the third rolling screw module 56 realizes the movement of the position of the flaw detection probe 54 in the flaw detection device 5, so as to facilitate the surface defect detection of the blades at different positions on the compressor rotor 1.

[0059] Specifically, as a specific setting manner of the flaw detection device 5, the flaw detection probe 54 includes two ultrasonic probes 541 that are horizontally spaced apart and electrically connected to the ultrasonic flaw detector host 55. An installation ring 57 is arranged on the circumferential outer wall of the pressing rod 53. A plurality of return springs 58 are arranged between the installation ring 57 and the upper end face of the support arm 52. A rotary electric cylinder 59 is arranged inside the bottom end of the pressing rod 53. The axis of the output shaft of the rotary electric cylinder 59 coincides with the axis of the pressing rod 53 and a fixed seat 510 is arranged on the output end of the rotary electric cylinder 59. A bidirectional electric cylinder 511 is arranged on the fixed seat 510. The two output shafts of the bidirectional electric cylinder 511 are horizontally arranged. A connecting plate 512 is fixed on each of the two output shafts of the bidirectional electric cylinder 511. The bidirectional electric cylinder 511 drives the two connecting plates 512 to move towards or away from each other simultaneously. The two ultrasonic probes 541 are respectively arranged on the inner walls of the two connecting plates 512, and can simultaneously measure the two side faces of the blade edge, improving the detection efficiency.

[0060] The arrangement of multiple reset springs 58 ensures the rebound of the pressing rod 53. The rotary electric cylinder 59 is used to adjust the rotation angles of the two ultrasonic probes 541 to meet the measurement requirements of blades of various models and sizes. Meanwhile, when detecting the blade, the bidirectional electric cylinder 511 drives the two ultrasonic probes 541 to closely adhere to the inlet and exhaust side contour surfaces on both sides of the blade to be measured, improving the accuracy of blade surface defect detection.

[0061] In this embodiment, the first rolling screw module 32, the second rolling screw module 42, and the third rolling screw module 56 each include two linear guide rails 7 arranged horizontally at intervals. A rolling screw drive module 8 is arranged between the two linear guide rails 7. A moving bracket 9 is connected to the rolling screw drive module 8. The two ends of the moving bracket 9 are respectively in sliding fit with the two linear guide rails 7. The rolling screw drive module 8 drives the moving bracket 9 to slide along the length direction of the linear guide rail 7. The bottoms of the electric indexing table 33, the top cone 43, and the column 51 are fixedly connected to the upper end surface of the moving bracket 9. It is worth mentioning that the rolling screw drive module 8 belongs to the prior art, and the connection relationship and selection of the rolling screw drive module 8 are existing mature technologies, so the circuit structure and working principle between the electrical components will not be elaborated here.

[0062] Further, the driving device 64 is a worm gear screw jack. The top of the worm gear screw jack is fixedly connected to the sliding support 63. The worm gear screw jack has the functions of lifting and self-locking, and is used to adjust the height of the support frame 62 and prevent the support frame 62 from self-dropping due to the weight of the compressor rotor 1 to be measured.

[0063] On the other hand, the present invention also provides a detection method for a compressor rotor blade surface defect detection device, which includes:

[0064] Step 1, fix the compressor rotor 1 to be measured: Place the compressor rotor 1 to be measured on the two rotary support devices 6, adjust the positions of the electric indexing table clamping device 3 and the top cone stop device 4. The electric indexing table clamping device 3 clamps the spline at one end of the shaft of the compressor rotor 1, and the top cone stop device 4 abuts against the end face at the other end of the shaft of the compressor rotor 1 to position the compressor rotor 1 to be measured.

[0065] Step 2, select the blade on the compressor rotor 1 to be measured: The electric indexing table clamping device 3 drives the compressor rotor 1 to be measured to rotate to the detection position.

[0066] Step 3, adjust the flaw detection probe 54: Adjust the position of the column 51 and the angle of the flaw detection probe 54 to align the flaw detection probe 54 with the inlet and exhaust edges of the blade on the compressor rotor 1 to be measured.

[0067] Step 4. Perform surface defect detection on the selected blade: Press down the pressing rod 53 to make the flaw detection probe 54 closely adhere to the inlet and exhaust edge profiles on both sides of the blade to be tested. Start the flaw detection probe 54 to collect and process the defect characteristics of the rotor of the blade to be tested, obtain the damage information on the blade surface, and upload this information to the ultrasonic flaw detector main unit 55 to complete the surface defect detection work on the blade of the compressor rotor 1 at the current detection position.

[0068] Step 5. Perform surface defect detection on the next blade: The electric indexing plate clamping device 3 drives the compressor rotor 1 to be tested to rotate to the next detection position, and repeat Steps 2 - 4 to perform surface defect detection on the blade of the compressor rotor 1 at the next detection position.

[0069] Step 6. Perform surface defect detection on all blades: Repeat Step 5 until the surface defect detection of all blades of the compressor rotor 1 to be tested is completed. Then, the electric indexing plate clamping device 3, the top cone stop device 4, and the flaw detection device 5 are reset, and the compressor rotor 1 to be tested is disassembled.

[0070] In the above method, for the detection method of the surface defect detection device of the compressor rotor 1 blade, through the interlocking control of the electric indexing plate clamping device 3, the top cone stop device 4, and the flaw detection device 5, precise positioning and self - rotation of the blade rotor can be achieved, and the surface defects of each stage of the blades of the compressor rotor 1 to be measured can be accurately collected, processed, and analyzed to ensure the integrity of the measurement results.

[0071] In summary, for a surface defect detection device and its detection method of a compressor rotor blade in the present invention, compared with the existing manual flaw detection of the compressor rotor 1 blade of an aero - engine, it can achieve rapid detection of the surface defects of the compressor rotor 1 blade, and has high detection efficiency and detection accuracy.

Claims

1. A compressor rotor blade surface defect detection device, characterized in that It includes a detection platform, on which an electric indexing table clamping device, a top cone stop device and a flaw detection device are arranged; Both ends of the compressor rotor shaft are respectively connected to the electric indexing table clamping device and the top cone stop device, and the electric indexing table clamping device and the top cone stop device drive the compressor rotor to rotate and move axially; The flaw detection device includes a column arranged on one side of the compressor rotor. The bottom of the column is connected to the upper end surface of the detection platform. A support arm is arranged at the top of the column. A pressing rod is vertically and movably connected to the end of the support arm. At the bottom of the pressing rod, a flaw detection probe and an ultrasonic flaw detector main unit that are electrically connected to each other are arranged. After the pressing rod is pressed down, it drives the flaw detection probe to detect the surface defects of the compressor rotor blades, and the ultrasonic flaw detector main unit displays the surface defects of the compressor rotor blades; Two rotating support devices are arranged between the electric indexing table clamping device and the top cone stop device. A pair of support wheels are rotatably arranged on the top of each of the two rotating support devices. Both ends of the compressor rotor shaft are respectively arranged in the two pairs of support wheels. The axis of the support wheel is parallel to the axis of the compressor rotor shaft, and the circumferential outer wall of the support wheel contacts the circumferential outer wall of the compressor rotor shaft.

2. The compressor rotor blade surface defect detection device according to claim 1, characterized in that, The electric indexing table clamping device includes a first support seat. The bottom of the first support seat is fixedly connected to the detection platform. A first rolling screw module is arranged on the top of the first support seat. An electric indexing table is arranged on the first rolling screw module. A three-jaw chuck for clamping one end spline of the compressor rotor shaft is arranged on the electric indexing table. The first rolling screw module drives the electric indexing table to move along the axis direction of the compressor rotor shaft.

3. The compressor rotor blade surface defect detection device according to claim 2, characterized in that, The top cone stop device includes a second support seat. The bottom of the second support seat is fixedly connected to the detection platform. A second rolling screw module is arranged on the top of the second support seat. A top cone is arranged on the second rolling screw module. The top cone is in tight contact with the end face of the other end of the compressor rotor shaft. The second rolling screw module drives the top cone to move along the axis direction of the compressor rotor shaft; the axis of the electric indexing table coincides with the axis of the top cone.

4. The compressor rotor blade surface defect detection device according to claim 3, characterized in that, Each rotating support device includes a support frame. The bottom of the support frame is fixedly connected to the detection platform. A sliding support is vertically slidably arranged on the support frame. A driving device for driving the sliding support to reciprocate in the vertical direction is arranged at the bottom of the support frame. A pair of the support wheels are rotatably arranged on the top of the sliding support.

5. The compressor rotor blade surface defect detection device according to claim 4, characterized in that, The bottom of the column is connected to the upper end surface of the detection platform through a third rolling screw module, and the third rolling screw module drives the column to move along the axis direction of the compressor rotor shaft.

6. The compressor rotor blade surface defect detection device according to claim 5, characterized in that, The flaw detection probe includes two ultrasonic probes that are horizontally spaced apart and electrically connected to the ultrasonic flaw detector main unit; An installation ring is provided on the circumferential outer wall of the pressing rod, and a plurality of reset springs are provided between the installation ring and the upper end surface of the support arm; a rotary electric cylinder is provided inside the bottom end of the pressing rod. The axis of the output shaft of the rotary electric cylinder coincides with the axis of the pressing rod, and a fixed seat is provided on the output end of the rotary electric cylinder. A bidirectional electric cylinder is provided on the fixed seat. The two output shafts of the bidirectional electric cylinder are arranged horizontally, and a connecting plate is fixed on each of the two output shafts of the bidirectional electric cylinder. The bidirectional electric cylinder drives the two connecting plates to move towards or away from each other simultaneously; the two ultrasonic probes are respectively arranged on the inner walls of the two connecting plates.

7. The compressor rotor blade surface defect detection device according to claim 5, characterized in that, The first rolling screw module, the second rolling screw module and the third rolling screw module each include two linear guide rails arranged horizontally at intervals. A rolling screw drive module is arranged between the two linear guide rails. A moving bracket is connected to the rolling screw drive module. The two ends of the moving bracket are respectively in sliding fit with the two linear guide rails. The rolling screw drive module drives the moving bracket to slide along the length direction of the linear guide rail; The bottoms of the electric indexing table, the top cone and the column are all fixedly connected to the upper end surface of the moving bracket.

8. The compressor rotor blade surface defect detection device according to claim 4, characterized in that The driving device is a worm screw lift, and the top of the worm screw lift is fixedly connected to the sliding support.

9. A detection method for detecting surface defects of a compressor rotor blade according to any one of claims 2 to 8, characterized in that, Including: Step 1, fix the compressor rotor to be measured: Place the compressor rotor to be measured on the two rotary support devices, adjust the positions of the electric indexing table clamping device and the top cone stop device. The electric indexing table clamping device clamps the spline at one end of the compressor rotor shaft, and the top cone stop device abuts against the end face at the other end of the compressor rotor shaft to position the compressor rotor to be measured; Step 2, select a blade on the compressor rotor to be measured: The electric indexing table clamping device drives the compressor rotor to be measured to rotate to the detection position; Step 3, adjust the flaw detection probe: Adjust the position of the column and the angle of the flaw detection probe to align the flaw detection probe with the inlet and outlet edges of the blade on the compressor rotor to be measured; Step 4, perform surface defect detection on the selected blade: Press down the pressing rod to make the flaw detection probe closely adhere to the inlet and outlet edge profiles on both sides of the blade to be measured. Start the flaw detection probe to collect and process the defect characteristics of the blade rotor to be measured, obtain the damage information on the blade surface, and upload this information to the ultrasonic flaw detector host to complete the surface defect detection work of the blade of the compressor rotor to be measured at the current detection position; Step 5, perform surface defect detection on the next blade: The electric indexing table clamping device drives the compressor rotor to be measured to rotate to the next detection position, and repeat Steps 2 to 4 to perform surface defect detection on the blade of the compressor rotor to be measured at the next detection position; Step 6, perform surface defect detection on all blades: Repeat Step 5 until after completing the surface defect detection on all blades of the compressor rotor to be measured, the electric indexing table clamping device, the top cone stop device and the flaw detection device are reset, and the compressor rotor to be measured is disassembled.

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