Rotor high-speed dynamic balance positioning device and rotor high-speed dynamic balance test method

Abstract

The invention discloses a rotor high-speed dynamic balance positioning device and a rotor high-speed dynamic balance test method, and the device comprises an annular positioning assembly which is used for sleeving a target rotor, is located and fixed on the target rotor and is concentric with the target rotor, and the surface of the annular positioning assembly is provided with an angle mark; and the identification assembly is fixedly arranged at the preset circumferential position of the annular positioning assembly so as to be matched with the angle identification to mark the current angle of the rotor. By arranging the annular positioning assembly to be positioned and fixed on the rotor and enabling the annular positioning assembly and the rotor to be concentric, the circumferential angle of the rotor can be correspondingly indicated through the angle mark; the phase measured in the dynamic balance test can be accurately indicated by matching the identification assembly with the angle identification, and the material removal phase is indicated before the material removal operation and in the material removal process, so that the material removal positioning precision is improved, the error is greatly reduced, and the dynamic balance test efficiency and the test effect are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of aero-engine testing and experiment, and in particular, to a rotor high-speed dynamic balancing positioning device. In addition, the present invention also relates to a rotor high-speed dynamic balancing test method comprising the rotor high-speed dynamic balancing positioning device. Background Art

[0002] The structure of the aircraft engine rotor system is complex, and it is assembled from parts such as the shaft, compressor disc, turbine disc, bearing, elastic support, damper, bearing seat, etc. The aircraft engine rotor inevitably has mass eccentricity due to material, processing, assembly and other reasons. The center of mass deviates from the center of rotation to form the rotor imbalance. Since the aircraft engine rotor speed is as high as tens of thousands of revolutions per minute, the huge centrifugal force load generated by the rotor mass eccentricity at high speed can easily cause strong vibration problems in the rotor system. In order to reduce the vibration of the rotor system caused by the rotor imbalance and ensure the safety of the engine, the rotor needs to be subjected to a high-speed dynamic balancing test before the engine rotor is installed, and the rotor imbalance is corrected by removing materials.

[0003] The high-speed dynamic balancing test of the rotor is an important method to reduce the rotor imbalance. Therefore, a high-speed dynamic balancing test is required before the rotor is installed to reduce the rotor imbalance to a sufficiently small amount. During the high-speed dynamic balancing test of the aircraft engine rotor, the method of removing material from the shaft is usually used for balancing. The specific operation is to find the "key" position on the engine rotor, and then remove the material at the "key" position to reduce the rotor mass eccentricity, thereby correcting the rotor imbalance. The high-speed dynamic balancing test process of the engine rotor is cumbersome. Each dynamic balancing process must go through: measuring the initial vibration data - measuring the vibration data after applying the test weight - calculating the rotor imbalance using the influence coefficient method - removing the material according to the calculation results - checking the repeated iterations of the balancing effect after removing the material, until the vibration of the rotor system after balancing is reduced to meet the installation requirements. The engine rotor is a high-speed flexible rotor with a design speed higher than the first two critical speeds of the rotor system. When the rotor has a large imbalance, it is necessary to balance for each critical speed and the design speed. Therefore, whether the position where the material needs to be removed on the shaft can be accurately located during the high-speed dynamic balancing test, and the error of the material removal phase can be reduced, which determines the efficiency and balancing effect of the high-speed dynamic balancing test. During the test, a wheel is installed on the rotating shaft, and both ends of the rotating shaft are supported on the bearing seat through bearings. The general angle measuring device cannot be installed through the shaft end to the shaft section where the material needs to be removed, or it is difficult to ensure that the angle measuring device is concentric with the rotating shaft, resulting in inaccurate scale indication on the protractor. How to accurately locate the phase of the material to be removed on the rotating shaft is a difficult problem, and there is currently no special device for locating the imbalance in the rotor high-speed dynamic balancing test.

[0004] During the high-speed dynamic balancing test of the rotor, according to the phase of the unbalance calculated by the balancing instrument, the operator uses the zero position marked on the rotor as a reference to visually estimate the corresponding material removal position. This method results in a large random error in the actual material removal position. Since the material removal operation is performed on the annular balancing boss reserved on the shaft, a small deviation will result in failure to achieve the balancing effect after material removal. When the deviation between the material removal position and the key point is large, in order to achieve the same balancing effect, more material needs to be removed by grinding on a larger angle range on the arc surface, which will further increase the error and may even destroy the original rotor system balance state. Not only will the balancing effect not be achieved, but the vibration will increase, and the rotor system needs to be rebalanced. The need for repeated balancing due to the large error in the material removal position will increase the number of times the material is removed on the shaft. Once the mass of material available for removal on the boss is exceeded, the shaft will be scrapped and a new shaft will need to be replaced. Therefore, the existing method of visually locating the unbalanced phase seriously affects the efficiency and balancing effect of high-speed dynamic balancing. Summary of the invention

[0005] The present invention provides a rotor high-speed dynamic balancing positioning device and a rotor high-speed dynamic balancing test method to solve the technical problems in the prior art of inaccurate angular precision of material removal operation after a rotor high-speed dynamic balancing test, resulting in a large number of balancing times, low efficiency, and even the scrapping of the shaft due to excessive deviation.

[0006] According to one aspect of the present invention, there is provided a rotor high-speed dynamic balancing positioning device, comprising:

[0007] An annular positioning component is used to be sleeved on the target rotor and positioned and fixed on the target rotor and concentric with the target rotor, and the surface of the annular positioning component is provided with an angle mark;

[0008] The identification component is used to be fixedly arranged at a preset circumferential position of the annular positioning component to cooperate with the angle identification to mark the current angle of the rotor.

[0009] As a further improvement of the above technical solution, the identification component includes a fixing member fixed to the outer ring of the annular positioning component and an indicator needle fixed to the fixing member along the radial direction of the annular positioning component.

[0010] As a further improvement of the above technical solution, a track is arranged along the outer ring of the annular positioning assembly, the fixing member is slidably connected to the track, and a locking member is arranged on the fixing member for fixing the fixing member in the circumferential position of the annular positioning assembly.

[0011] As a further improvement of the above technical solution, the annular positioning assembly includes a first positioning member, a second positioning member and a third positioning member, the outer contour of the first positioning member includes a first outer arc surface, a first mating surface and a second mating surface in sequence, the outer contour of the second positioning member includes a second outer arc surface, a third mating surface and a fourth mating surface in sequence, the outer contour of the third positioning member includes a third outer arc surface and a fifth mating surface in sequence, the first positioning member and the second positioning member are symmetrical structures, the first outer arc surface, the second outer arc surface and the third outer arc surface together constitute the outer ring surface of the annular positioning assembly; the first mating surface cooperates with the third mating surface, the second mating surface and the fourth mating surface cooperate with the fifth mating surface together, and the third positioning member is provided with a driving mechanism for driving the first positioning member and the second positioning member to move toward or away from each other;

[0012] As a further improvement of the above technical solution, the inner annular surface of the annular positioning assembly includes a first semi-annular surface formed on the first positioning member and a second semi-annular surface formed on the second positioning member, or the inner annular surface of the annular positioning assembly includes a first inner arc surface formed on the first positioning member, a second inner arc surface formed on the second positioning member and a third inner arc surface formed on the third positioning member.

[0013] As a further improvement of the above technical solution, the driving mechanism includes a driving rod arranged along the moving direction of the first positioning member, and the two ends of the driving rod are respectively threadedly connected to the first positioning member and the second positioning member; the driving rod is axially limited and circumferentially rotated on the third positioning member.

[0014] As a further improvement of the above technical solution, a driving groove is provided on the fifth mating surface along the moving direction of the first positioning member, and the two ends of the driving groove are respectively connected to the third outer arc surface; the second mating surface and the fourth mating surface are respectively protruded with connecting blocks matching the axial position of the driving groove, the width of the connecting block is smaller than the width of the driving groove so that it can be inserted into the driving groove, and the connecting block is provided with an internal thread for matching with the external thread of the driving rod; the end of the driving rod is provided with a force-applying structure, which is used to drive the driving rod to rotate circumferentially through the force of an external tool, thereby driving the first positioning member and the second positioning member to move toward or away from each other.

[0015] As a further improvement of the above technical solution, the middle part of the drive rod protrudes to form an annular positioning boss, the inner wall of the drive groove protrudes to form spaced limiting bosses, the upper surface of the limiting boss is an arc surface matching the outer wall of the drive rod, and the positioning boss is used to be inserted between the two limiting bosses under the action of gravity to thereby limit the axial position of the drive rod, or, the middle part of the drive rod protrudes to form an annular positioning boss, and the inner wall of the drive groove is provided with a limiting groove matching the annular positioning boss, or, the middle part of the drive rod protrudes to form spaced annular limiting bosses, the inner wall of the drive groove protrudes to form a positioning boss, and the upper surface of the positioning boss is an arc surface matching the outer wall of the drive rod.

[0016] As a further improvement of the above technical solution, the indicator needle is provided with a telescopic structure.

[0017] As a further improvement of the above technical solution, the inner ring of the annular adapter assembly is provided with a connection structure, and the connection structure is used to connect with an annular positioning block assembly of a preset thickness to match the diameter of the target rotor.

[0018] According to another aspect of the present invention, a rotor high-speed dynamic balancing test method is also provided, which includes the above-mentioned rotor high-speed dynamic balancing positioning device, and the test method includes:

[0019] S1. Perform rotor dynamic balancing test and calculate the unbalanced phase;

[0020] S2. Install the annular positioning assembly on the target rotor, rotate the rotor circumferentially or adjust the annular positioning assembly so that the angle mark corresponds to the zero position marked on the target rotor;

[0021] S3. Adjust the identification component to the corresponding circumferential position according to the calculated unbalanced phase;

[0022] S4. Perform material removal process according to the identification component instructions;

[0023] S5. Repeat steps S2-S4 until the imbalance is lower than the preset value, and the dynamic balancing test is completed.

[0024] The present invention has the following beneficial effects:

[0025] The positioning device arranges an annular positioning component to position and fix the rotor and make the two concentric, and can then indicate the circumferential angle of the rotor through an angle mark. After the marking component matches the angle mark with the zero mark on the rotor, the phase measured in the dynamic balancing test can be accurately indicated by the marking component in conjunction with the angle mark, accurately measuring any angle on the rotating shaft, indicating the material removal phase before and during the material removal operation, improving the positioning accuracy of material removal during high-speed dynamic balancing tests, greatly reducing errors, and improving the efficiency and test results of dynamic balancing tests.

[0026] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0028] Figure 1 is a front view of a preferred embodiment of the present invention;

[0029] Figure 2 is a side view of a preferred embodiment of the present invention;

[0030] Figure 3 yes Figure 2 A-section view.

[0031] Legend:

[0032] 1. First positioning member; 11. First mating surface; 12. Second mating surface; 13. Connecting block; 2. Second positioning member; 21. Third mating surface; 22. Fourth mating surface; 3. Third positioning member; 31. Driving groove; 4. Driving rod; 41. Force-applying structure; 42. Annular positioning boss; 5. Indicator needle; 6. Fixing member; 7. Locking member; 8. Track; 9. Angle mark. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0034] Figure 1 is a front view of a preferred embodiment of the present invention; Figure 2 is a side view of a preferred embodiment of the present invention; Figure 3 yes Figure 2 A-section view.

[0035] like Figures 1 to 3As shown, the rotor high-speed dynamic balancing positioning device of this embodiment includes:

[0036] An annular positioning component is used to be sleeved on the target rotor and positioned and fixed on the target rotor and concentric with the target rotor, and an angle mark 9 is provided on the surface of the annular positioning component;

[0037] The identification component is used to be fixedly arranged at a preset circumferential position of the annular positioning component to cooperate with the angle identification 9 to mark the current angle of the rotor.

[0038] The angle mark 9 may be a 360° angle scale provided on the surface of the annular positioning component;

[0039] It can be understood that the positioning device arranges an annular positioning component to position and fix the rotor and make the two concentric, and then can indicate the circumferential angle of the rotor through the angle mark 9. After the marking component matches the angle mark 9 with the zero mark on the rotor, the phase measured in the dynamic balancing test can be accurately indicated by the marking component in conjunction with the angle mark 9, accurately measuring any angle on the rotating shaft, indicating the material removal phase before and during the material removal operation, improving the positioning accuracy of material removal during high-speed dynamic balancing tests, greatly reducing errors, and improving the efficiency and test results of dynamic balancing tests.

[0040] Furthermore, the identification component includes a fixing member 6 for fixing to the outer ring of the annular positioning component and an indicator needle 5 fixedly arranged on the fixing member 6 along the radial direction of the annular positioning component. By setting the indicator needle 5, the radial dimension of the angle mark 9 can be increased, so that the angle mark 9 is set more clearly, and the positioning accuracy is further improved. After the fixing member 6 is fixed to the corresponding angle, the indicator needle 5 points to the corresponding position of the rotor through the scale of the angle mark 9. The tip of the indicator needle 5 is close to the rotor, and the phase is accurately indicated, thereby improving the positioning accuracy.

[0041] Specifically, a track 8 is provided along the outer ring of the annular positioning assembly, and the fixing member 6 is slidably connected to the track 8, and the curvature of the fixing member 6 matches the curvature of the outer ring of the annular positioning assembly; the cross-section of the fixing member 6 is a C-shaped structure, and the track 8 can be an annular protrusion protruding axially formed on the two end surfaces of the outer edge of the annular positioning assembly, or it can be an annular groove opened on the two end surfaces respectively near the outer edge of the annular positioning assembly. The two ends of the fixing member 6 are buckled into the annular protrusion or the annular groove, based on which the fixing member 6 can slide along the outer edge of the annular positioning assembly to adjust the circumferential position; a locking member 7 for fixing the fixing member 6 in the circumferential position of the annular positioning assembly is provided on the fixing member 6, and the locking member 7 is a locking screw connected to the fixing member 6 along the radial thread of the annular positioning assembly. After adjusting the position of the fixing member 6, the locking screw is tightened so that its small end abuts against the outer ring surface of the annular positioning assembly, and the fixing member 6 can be fixed to realize rotor phase indication, which is easy to operate.

[0042] In some embodiments, the annular positioning assembly includes a first positioning member 1, a second positioning member 2 and a third positioning member 3, the outer contour of the first positioning member 1 includes a first outer arc surface, a first mating surface 11 and a second mating surface 12 in sequence, the outer contour of the second positioning member 2 includes a second outer arc surface, a third mating surface 21 and a fourth mating surface 22 in sequence, the outer contour of the third positioning member 3 includes a third outer arc surface and a fifth mating surface in sequence, the first positioning member 1 and the second positioning member 2 are symmetrical structures, the first outer arc surface, the second outer arc surface and the third outer arc surface together constitute the outer ring surface of the annular positioning assembly; the first mating surface 11 cooperates with the third mating surface 21, the second mating surface 12 and the fourth mating surface 22 cooperate with the fifth mating surface, and the third positioning member 3 is provided with a driving mechanism for driving the first positioning member 1 and the second positioning member 2 to move toward or away from each other; by respectively providing the first positioning member 1, the second positioning member 2 and the third positioning member 3, the movement of the first positioning member 1 and the second positioning member 2 is controlled by the driving mechanism to achieve clamping or loosening of the rotor, and the positioning installation or cancellation of the positioning installation is simple and convenient;

[0043] Preferably, the inner ring surface of the annular positioning assembly includes a first half ring surface formed on the first positioning member 1 and a second half ring surface formed on the second positioning member 2, and the inner ring surface is formed on the first positioning member 1 and the second positioning member 2, so that the installation space of the drive mechanism is located on the third positioning member 3, avoiding structural interference and complex structural design, thereby ensuring the positioning accuracy of the inner ring to the rotor; in some embodiments, the inner ring surface of the annular positioning assembly may also include a first inner arc surface formed on the first positioning member 1, a second inner arc surface formed on the second positioning member 2, and a third inner arc surface formed on the third positioning member 3.

[0044] In some embodiments, the driving mechanism includes a driving rod 4 arranged along the moving direction of the first positioning member 1, and the two ends of the driving rod 4 are respectively threadedly connected to the first positioning member 1 and the second positioning member 2; the driving rod 4 is axially limited and circumferentially rotated on the third positioning member 3; wherein, by controlling the rotation of the driving rod 4, the first positioning member 1 and the second positioning member 2 are driven to move simultaneously under the action of the threaded cooperation at both ends, and the control of the rotation direction of the thread arrangement realizes the control of the first positioning member 1 and the second positioning member 2 to move toward and away from each other, which is easy to operate and improves the positioning efficiency;

[0045] Specifically, a driving groove 31 is provided on the fifth mating surface along the moving direction of the first positioning member 1, and the two ends of the driving groove 31 are respectively connected to the third outer arc surface; the second mating surface 12 and the fourth mating surface 22 are respectively protruded with connecting blocks 13 that match the axial position of the driving groove 31, and the width of the connecting block 13 is smaller than the width of the driving groove 31 so as to be inserted into the driving groove 31, and the connecting block 13 is provided with an internal thread for matching with the external thread of the driving rod 4; the end of the driving rod 4 is provided with a force-applying structure 41, which is used to drive the driving rod 4 to rotate circumferentially through the force of an external tool The first positioning member 1 and the second positioning member 2 are driven to move toward or away from each other; wherein the force-applying structure 41 may be a structure such as an inner hexagonal groove or an outer hexagonal protrusion or an inner triangular groove, and the two ends of the driving groove 31 are respectively connected to the third outer arc surface, that is, an external tool can be inserted from the two ends of the driving groove 31 to cooperate with the force-applying structure 41 to apply force to drive it to rotate, and drive the two connecting blocks 13 to move along the driving groove 31 respectively, so as to control the movement of the first positioning member 1 and the second positioning member 2 toward and away from each other, the structure is simple, and the installation and removal operations on the rotating shaft are simple, thereby improving efficiency;

[0046] Furthermore, a ring-shaped positioning boss 42 is formed on the middle of the driving rod 4, and a limiting groove matching the ring-shaped positioning boss 42 is provided on the inner wall of the driving groove 31; by providing the limiting groove, the driving rod 4 is axially limited after the positioning boss is embedded in the limiting groove, and the driving rod 4 maintains an unchanged axial position during the rotation process under force, thereby driving the first positioning member 1 and the second positioning member 2 to move;

[0047] In some embodiments, the middle portion of the driving rod 4 may be protruded to form an annular positioning boss 42, the inner wall of the driving groove 31 may be protruded to form a limiting boss distributed along the axial direction of the driving rod 4, the upper surface of the limiting boss is an arc surface matching the outer wall of the driving rod 4, and the positioning boss is used to be inserted between the two limiting bosses under the action of gravity to thereby limit the axial position of the driving rod 4. In some embodiments, the middle portion of the driving rod 4 may be protruded to form an annular limiting boss distributed at intervals, the inner wall of the driving groove 31 may be protruded to form a positioning boss, and the upper surface of the positioning boss is an arc surface matching the outer wall of the driving rod 4.

[0048] In some embodiments, the inner ring of the annular adapter assembly is provided with a connection structure, and the connection structure is used to connect with an annular positioning block assembly of a preset thickness to match the diameter of the target rotor. Taking the inner annular surface as the first half annular surface and the second half annular surface as an example, the annular positioning block assembly is designed as a first half annular positioning block and a second half annular positioning block, which are matched and installed to the first half annular surface and the second half annular surface respectively. For rotors of different sizes and specifications, annular positioning block assemblies of different thicknesses are designed respectively. The inner annular surface size of the annular positioning block assembly matches the size of the rotor, thereby adapting to the dynamic balancing test of rotors of different specifications, thereby improving the applicability of the device;

[0049] Furthermore, the indicator needle 5 is provided with a telescopic structure, and the length of the indicator needle 5 can be adjusted according to rotors of different specifications, so that the tip of the indicator needle 5 is closer to the rotor, thereby improving the indication accuracy, ensuring the material processing accuracy, and further improving the dynamic balancing test efficiency and test effect.

[0050] On the other hand, the preferred embodiment further provides a rotor high-speed dynamic balancing test method, which uses the above-mentioned rotor high-speed dynamic balancing positioning device, and the test method includes:

[0051] S1: Perform a rotor dynamic balancing test and calculate the unbalanced phase; this is achieved by referring to the dynamic balancing test method of the prior art, which will not be elaborated on in detail;

[0052] S2. Install the annular positioning assembly on the target rotor, rotate the adjusting rotor or the annular positioning assembly circumferentially so that the angle mark corresponds to the zero position marked on the target rotor; specifically, after the first half annular surface and the second half annular surface of the positioning device in the open state are roughly aligned with the target rotor, the tool is used to apply force to rotate the driving rod forward so that the first positioning member and the second positioning member move toward each other to clamp the rotor, and before clamping, the annular positioning assembly is rotated circumferentially to adjust the angle mark to correspond to the zero position marked on the target rotor, thereby completing the positioning and fixing;

[0053] S3. Adjust the identification component to the corresponding circumferential position according to the calculated unbalanced phase; that is, slide the fixing member to the corresponding angular position so that the indicator needle corresponds to the angle mark, and tighten the locking member to position and fix the fixing member;

[0054] S4. Perform material removal process according to the identification component instructions; refer to the material removal process of the dynamic balancing test method of the prior art, which will not be elaborated on;

[0055] S5. Repeat steps S2-S4 until the imbalance is lower than the preset value, and the dynamic balancing test is completed.

[0056] By applying the above rotor dynamic balancing positioning device, the phase positioning accuracy is high, the dynamic balancing material removal accuracy is effectively improved, the number of material required is reduced, and the efficiency and balancing effect of the rotor high-speed dynamic balancing test are greatly improved.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rotor high-speed dynamic balancing positioning device, characterized in that: include: An annular positioning component is used to be sleeved on the target rotor and positioned and fixed on the target rotor and concentric with the target rotor, and the surface of the annular positioning component is provided with an angle mark (9); The marking component is used to be fixedly arranged at a preset circumferential position of the annular positioning component to cooperate with the angle mark (9) to mark the current angle of the rotor.

2. The rotor high-speed dynamic balancing positioning device according to claim 1, characterized in that: The identification component comprises a fixing member (6) used to be fixed to the outer ring of the annular positioning component and an indicating needle (5) fixedly arranged on the fixing member (6) along the radial direction of the annular positioning component.

3. The rotor high-speed dynamic balancing positioning device according to claim 2, characterized in that: A track (8) is arranged along the outer ring of the annular positioning assembly, the fixing member (6) is slidably connected to the track (8), and a locking member (7) is arranged on the fixing member (6) for fixing the fixing member (6) at a circumferential position of the annular positioning assembly.

4. The rotor high-speed dynamic balancing positioning device according to claim 1, characterized in that: The annular positioning component comprises a first positioning component (1), a second positioning component (2) and a third positioning component (3); the outer contour of the first positioning component (1) comprises a first outer arc surface, a first matching surface (11) and a second matching surface (12) in sequence; the outer contour of the second positioning component (2) comprises a second outer arc surface, a third matching surface (21) and a fourth matching surface (22) in sequence; the outer contour of the third positioning component (3) comprises a third outer arc surface and a fifth matching surface in sequence; the first positioning component (1) and the second positioning component (2) are symmetrical structures; the first outer arc surface, the second outer arc surface and the third outer arc surface together constitute the outer ring surface of the annular positioning component; the first matching surface (11) matches with the third matching surface (21); the second matching surface (12) and the fourth matching surface (22) jointly match with the fifth matching surface; the third positioning component (3) is provided with a driving mechanism for driving the first positioning component (1) and the second positioning component (2) to move toward or away from each other; The inner ring surface of the annular positioning component includes a first semi-annular surface formed on the first positioning member (1) and a second semi-annular surface formed on the second positioning member (2); or, the inner ring surface of the annular positioning component includes a first inner arc surface formed on the first positioning member (1), a second inner arc surface formed on the second positioning member (2) and a third inner arc surface formed on the third positioning member (3).

5. The rotor high-speed dynamic balancing positioning device according to claim 4, characterized in that: The driving mechanism comprises a driving rod (4) arranged along the moving direction of the first positioning member (1), and the two ends of the driving rod (4) are respectively threadedly connected to the first positioning member (1) and the second positioning member (2); the driving rod (4) is axially limited and circumferentially rotatable on the third positioning member (3).

6. The rotor high-speed dynamic balancing positioning device according to claim 5, characterized in that: A driving groove (31) is provided on the fifth mating surface along the moving direction of the first positioning member (1), and the two ends of the driving groove (31) are respectively connected to the third outer arc surface; a connecting block (13) is protruded on the second mating surface (12) and the fourth mating surface (22) and matches the axial position of the driving groove (31), the width of the connecting block (13) is smaller than the width of the driving groove (31) so as to be inserted into the driving groove (31), and an internal thread for matching with the external thread of the driving rod (4) is provided on the connecting block (13); a force-applying structure (41) is provided at the end of the driving rod (4) for driving the driving rod (4) to rotate circumferentially through the force applied by an external tool, thereby driving the first positioning member (1) and the second positioning member (2) to move toward or away from each other.

7. The rotor high-speed dynamic balancing positioning device according to claim 6, characterized in that: The middle part of the driving rod (4) protrudes to form an annular positioning boss (42), the inner wall of the driving groove (31) protrudes to form spaced limiting bosses, the upper surface of the limiting boss is an arc surface matching the outer wall of the driving rod (4), and the positioning boss is used to be inserted between the two limiting bosses under the action of gravity to thereby limit the axial position of the driving rod (4), or, the middle part of the driving rod (4) protrudes to form an annular positioning boss (42), the inner wall of the driving groove (31) is provided with a limiting groove matching the annular positioning boss (42), or, the middle part of the driving rod (4) protrudes to form spaced limiting bosses, the inner wall of the driving groove (31) protrudes to form a positioning boss, and the upper surface of the positioning boss is an arc surface matching the outer wall of the driving rod (4).

8. The rotor high-speed dynamic balancing positioning device according to claim 2, characterized in that: The indicator needle (5) is provided with a telescopic structure.

9. The rotor high-speed dynamic balancing positioning device according to any one of claims 1 to 8, characterized in that: The inner ring of the annular adapter assembly is provided with a connection structure, and the connection structure is used to connect with an annular positioning block assembly of a preset thickness to match the diameter of the target rotor.

10. A rotor high-speed dynamic balancing test method, characterized in that: The rotor high-speed dynamic balancing positioning device according to any one of claims 1 to 9 is used, and the test method comprises: S1. Perform rotor dynamic balancing test and calculate the unbalanced phase; S2. Install the annular positioning assembly on the target rotor, rotate the rotor circumferentially or adjust the annular positioning assembly so that the angle mark corresponds to the zero position marked on the target rotor; S3. Adjust the identification component to the corresponding circumferential position according to the calculated unbalanced phase; S4. Perform material removal process according to the identification component instructions; S5. Repeat steps S2-S4 until the imbalance is lower than the preset value, and the dynamic balancing test is completed.

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