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

Abstract

This invention discloses a high-speed dynamic balancing positioning device and a high-speed dynamic balancing test method for a rotor, comprising: an annular positioning component for being fitted onto and fixed to the target rotor and concentric with it; the surface of the annular positioning component is provided with an angle mark; and an marking component for being fixedly set at a preset circumferential position on the annular positioning component to mark the current angle of the rotor in conjunction with the angle mark. By setting the annular positioning component to be fixed on the rotor and concentric with it, the circumferential angle of the rotor can be indicated by the angle mark. After the marking component matches and aligns the angle mark with the zero-position 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. This indicates the phase of material removal before and during the material removal operation, improving the positioning accuracy of material removal, significantly reducing errors, and improving the efficiency and effect of the dynamic balancing test.

Description

Technical Field

[0001] This invention relates to the field of aero-engine testing technology, and in particular, to a high-speed dynamic balancing positioning device for a rotor. Furthermore, this invention also relates to a high-speed dynamic balancing test method for a rotor including the aforementioned high-speed dynamic balancing positioning device. Background Technology

[0002] The rotor system of an aero-engine is complex, assembled from components such as the shaft, compressor disk, turbine disk, bearings, elastic supports, dampers, and bearing housings. Due to factors such as materials, processing, and assembly, aero-engine rotors inevitably exhibit mass eccentricity. This deviation of the center of mass from the center of rotation creates rotor imbalance. Since aero-engine rotors rotate at speeds of tens of thousands of revolutions per minute, the enormous centrifugal force generated by this mass eccentricity can easily trigger severe vibrations in the rotor system. To reduce rotor system vibrations caused by rotor imbalance and ensure engine safety, a high-speed dynamic balancing test must be performed on the rotor before installation. This process corrects the rotor imbalance by removing materials.

[0003] High-speed dynamic balancing of rotors is a crucial method for reducing rotor imbalance. Therefore, high-speed dynamic balancing tests are necessary before rotor installation to minimize rotor imbalance. In aero-engine rotor high-speed dynamic balancing tests, balancing is typically achieved by removing material from the shaft. Specifically, this involves identifying the "critical" locations on the engine rotor and removing material from these locations to reduce rotor mass eccentricity, thereby correcting the rotor imbalance. The high-speed dynamic balancing process for engine rotors is complex, requiring each iteration to: measure initial vibration data—measure vibration data after applying trial weight—calculate rotor imbalance using the influence coefficient method—remove material based on the calculation results—iteratively verify the balancing effect after material removal until the rotor system vibration is reduced to meet installation requirements. Engine rotors are high-speed flexible rotors with design speeds higher than the first two critical speeds of the rotor system. When the rotor imbalance is significant, balancing is required at each critical speed and the design speed. Therefore, the ability to accurately locate the material removal points on the shaft and minimize phase errors during high-speed dynamic balancing determines the efficiency and effectiveness of the test. Because a wheel is mounted on the shaft during the test, and both ends of the shaft are supported on bearing seats by bearings, it is generally impossible to install a protractor across the shaft end to the section of the shaft where material needs to be removed, or it is difficult to ensure that the protractor is concentric with the shaft, resulting in inaccurate readings on the protractor scale. Accurately locating the phase of the material to be removed on the shaft is a difficult problem, and currently there is no special device for locating the imbalance in high-speed rotor dynamic balancing tests.

[0004] During high-speed dynamic balancing tests of rotors, based on the phase of the unbalance calculated by the balancing instrument, the operator visually estimates the corresponding material removal position using the zero position marked on the rotor as a reference. 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 leads to insufficient balancing after material removal. When the deviation from the target position is large, to achieve the same balancing effect, more material needs to be removed by grinding over a larger angle range on the arc surface, further increasing the error and potentially disrupting the original rotor system's balance. This not only fails to achieve balancing but also increases vibration, necessitating a rebalancing of the rotor system. The need for repeated balancing due to large material removal position errors increases the number of times material needs to be removed from the shaft. Once the amount of material removed exceeds the capacity of the boss, the shaft will be scrapped and replaced with a new one. Therefore, the existing method of visually locating the unbalance phase severely impacts the efficiency and effectiveness of high-speed dynamic balancing. Summary of the Invention

[0005] This invention provides a high-speed dynamic balancing positioning device and a high-speed dynamic balancing test method for rotors, in order to solve the technical problems in the prior art where the inaccurate angular accuracy of material removal operation after high-speed dynamic balancing test of rotors leads to a large number of balancing operations, low efficiency, or even scrapping of the rotor shaft due to excessive deviation.

[0006] According to one aspect of the present invention, a high-speed dynamic balancing and positioning device for a rotor is provided, 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. An angle mark is provided on the surface of the annular positioning component.

[0008] An identification component is used to be fixedly set at a preset circumferential position of the annular positioning component to match the current angle of the rotor marked by the angle identification component.

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

[0010] As a further improvement to the above technical solution, the outer ring of the annular positioning component is provided with a track, the fixing member is slidably connected to the track, and the fixing member is provided with a locking member for fixing the fixing member to the circumferential position of the annular positioning component.

[0011] As a further improvement to the above technical solution, the annular positioning component includes a first positioning element, a second positioning element, and a third positioning element. The outer contour of the first positioning element sequentially includes a first outer arc surface, a first mating surface, and a second mating surface. The outer contour of the second positioning element sequentially includes a second outer arc surface, a third mating surface, and a fourth mating surface. The outer contour of the third positioning element sequentially includes a third outer arc surface and a fifth mating surface. The first positioning element and the second positioning element have a symmetrical structure. The first outer arc surface, the second outer arc surface, and the third outer arc surface together form the outer ring surface of the annular positioning component. The first mating surface mates with the third mating surface, and the second mating surface and the fourth mating surface together mate with the fifth mating surface. The third positioning element is provided with a driving mechanism for driving the first positioning element and the second positioning element to move towards or away from each other.

[0012] As a further improvement to the above technical solution, the inner ring surface of the annular positioning component includes a first half-ring surface formed on the first positioning member and a second half-ring surface formed on the second positioning member; or, the inner ring surface of the annular positioning component 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 to the above technical solution, the driving mechanism includes a driving rod arranged along the moving direction of the first positioning member, with both ends of the driving rod threadedly connected to the first positioning member and the second positioning member, respectively; the driving rod is axially limited and circumferentially rotated on the third positioning member.

[0014] As a further improvement to the above technical solution, a driving groove is formed 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; a connecting block is formed on the second mating surface and the fourth mating surface respectively, which matches the axial position of the driving groove. The width of the connecting block is smaller than the width of the driving groove so as to be inserted into the driving groove. The connecting block is provided with an internal thread for engaging 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 by applying force with an external tool, thereby driving the first positioning member and the second positioning member to move towards or away from each other.

[0015] As a further improvement to the above technical solution, the driving rod has an annular positioning boss protruding from its center, and the inner wall of the driving groove has spaced-apart limiting bosses protruding from its center. The upper surface of the limiting bosses is an arc surface that matches the outer wall of the driving rod. The positioning bosses are used to insert between the two limiting bosses under the action of gravity to limit the axial movement of the driving rod. Alternatively, the driving rod has an annular positioning boss protruding from its center, and the inner wall of the driving groove has a limiting groove that matches the annular positioning boss. Or, the driving rod has an annular limiting boss protruding from its center, and the inner wall of the driving groove has a positioning boss protruding from its center. The upper surface of the positioning bosses is an arc surface that matches the outer wall of the driving rod.

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

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

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

[0019] S1. Conduct a rotor dynamic balancing test and calculate the unbalance phase;

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

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

[0022] S4. Perform the material removal process according to the instructions on the labeling components;

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

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

[0025] This positioning device uses a ring-shaped positioning component to fix the rotor in place and make them concentric. It can then use an angle marker to indicate the circumferential angle of the rotor. After the marking component matches and aligns the angle marker with the zero-position 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 marker. This allows for accurate measurement of any angle on the shaft and indicates the phase of material removal before and during the material removal operation. This improves the positioning accuracy of material removal in high-speed dynamic balancing tests, significantly reduces errors, and improves the efficiency and effectiveness of dynamic balancing tests.

[0026] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0027] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

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

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

[0030] Figure 3 yes Figure 2 Sectional view along direction A.

[0031] Legend:

[0032] 1. First positioning component; 11. First mating surface; 12. Second mating surface; 13. Connecting block; 2. Second positioning component; 21. Third mating surface; 22. Fourth mating surface; 3. Third positioning component; 31. Drive groove; 4. Drive rod; 41. Force application structure; 42. Annular positioning boss; 5. Indicator pin; 6. Fixing component; 7. Locking component; 8. Track; 9. Angle mark. Detailed Implementation

[0033] The embodiments of the present invention will be 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 This is a front view of a preferred embodiment of the present invention; Figure 2 This is a side view of a preferred embodiment of the present invention; Figure 3 yes Figure 2 Sectional view along direction A.

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

[0036] An annular positioning component is used to be fitted onto the target rotor and positioned and fixed to the target rotor and concentric with the target rotor. An angle mark 9 is provided on the surface of the annular positioning component.

[0037] The marking component is used to fix the rotor at a preset circumferential position on the annular positioning component to match the angle marking 9 to mark the rotor's current angle.

[0038] Among them, the angle mark 9 can be a 360° angle scale set on the surface of the annular positioning component;

[0039] Understandably, this positioning device uses a ring-shaped positioning component to fix the rotor in place and make them concentric. This allows the circumferential angle of the rotor to be indicated by the angle mark 9. After the marking component aligns the angle mark 9 with the zero-position 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. This allows for accurate measurement of any angle on the shaft and indicates the phase of material removal before and during the material removal operation. This improves the positioning accuracy of material removal during high-speed dynamic balancing tests, significantly reduces errors, and improves the efficiency and effectiveness of dynamic balancing tests.

[0040] Furthermore, the marking component includes a fixing member 6 for fixing to the outer ring of the annular positioning component and an indicator needle 5 fixedly disposed 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 marking 9 can be increased, making the angle marking 9 clearer and further improving the positioning accuracy. 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 marking 9. The tip of the indicator needle 5 is close to the rotor, accurately indicating the phase and improving the positioning accuracy.

[0041] Specifically, the outer ring of the annular positioning component is provided with a track 8, and the fixing member 6 is slidably connected to the track 8. The curvature of the fixing member 6 matches the curvature of the outer ring of the annular positioning component. The cross-section of the fixing member 6 is a C-shaped structure. The track 8 can be an annular protrusion formed on both ends of the outer edge of the annular positioning component along the axial direction, or it can be an annular groove opened on both ends near the outer edge of the annular positioning component. The two ends of the fixing member 6 are fastened into the annular protrusion or the annular groove. Based on this, the fixing member 6 can slide along the outer edge of the annular positioning component to adjust its circumferential position. The fixing member 6 is provided with a locking member 7 for fixing the fixing member 6 to the circumferential position of the annular positioning component. The locking member 7 is a locking screw that is connected to the fixing member 6 radially along the annular positioning component. 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 component to fix the fixing member 6, realizing rotor phase indication, which is convenient to operate.

[0042] In some embodiments, the annular positioning assembly includes a first positioning element 1, a second positioning element 2, and a third positioning element 3. The outer contour of the first positioning element 1 sequentially includes a first outer arc surface, a first mating surface 11, and a second mating surface 12. The outer contour of the second positioning element 2 sequentially includes a second outer arc surface, a third mating surface 21, and a fourth mating surface 22. The outer contour of the third positioning element 3 sequentially includes a third outer arc surface and a fifth mating surface. The first positioning element 1 and the second positioning element 2 have a symmetrical structure. The first outer arc surface, the second outer arc surface, and the third outer arc surface together form the outer ring surface of the annular positioning assembly. The first mating surface 11 mates with the third mating surface 21, and the second mating surface 12 and the fourth mating surface 22 mate with the fifth mating surface. The third positioning element 3 is provided with a driving mechanism for driving the first positioning element 1 and the second positioning element 2 to move towards or away from each other. By separately setting the first positioning element 1, the second positioning element 2, and the third positioning element 3, and controlling the movement of the first positioning element 1 and the second positioning element 2 through the driving mechanism, the rotor can be clamped or released. The positioning installation or cancellation operation is simple.

[0043] Preferably, the inner ring surface of the annular positioning component 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. 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, and ensuring the positioning accuracy of the inner ring on the rotor. In some embodiments, the inner ring surface of the annular positioning component 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, with both ends of the driving rod 4 threadedly connected to the first positioning member 1 and the second positioning member 2 respectively; 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 engagement at both ends, and the direction of the thread layout is controlled to control the relative and opposite movements of the first positioning member 1 and the second positioning member 2, which is simple to operate and improves positioning efficiency;

[0045] Specifically, a drive groove 31 is formed on the fifth mating surface along the moving direction of the first positioning member 1, and the two ends of the drive groove 31 are respectively connected to the third outer arc surface; a connecting block 13 is formed on the second mating surface 12 and the fourth mating surface 22 respectively, which matches the axial position of the drive groove 31. The width of the connecting block 13 is smaller than the width of the drive groove 31 so as to be inserted into the drive groove 31. The connecting block 13 is provided with an internal thread for engaging with the external thread of the drive rod 4; a force-applying structure 41 is provided at the end of the drive rod 4 for driving the drive rod 4 to rotate circumferentially by applying force with an external tool. The first positioning element 1 and the second positioning element 2 are then driven to move towards or away from each other. The force-applying structure 41 can be a structure such as an inner hexagonal groove, an outer hexagonal protrusion, or an inner triangular groove. The two ends of the drive groove 31 are respectively connected to the third outer arc surface. External tools can be inserted into the two ends of the drive groove 31 to cooperate with the force-applying structure 41 to apply force and drive it to rotate. This drives the two connecting blocks 13 to move along the drive groove 31, thereby controlling the movement of the first positioning element 1 and the second positioning element 2 towards or away from each other. The structure is simplified, and the installation and removal operations on the rotating shaft are convenient, improving efficiency.

[0046] Furthermore, the middle part of the drive rod 4 protrudes to form an annular positioning boss 42, and the inner wall of the drive groove 31 is provided with a limiting groove that matches the annular positioning boss 42; by setting the limiting groove, the drive rod 4 is axially limited after the positioning boss is embedded in the limiting groove, and the drive rod 4 maintains its axial position unchanged during the force rotation process, thereby driving the first positioning member 1 and the second positioning member 2 to move.

[0047] In some embodiments, the drive rod 4 may have an annular positioning boss 42 protruding from its center, and the inner wall of the drive groove 31 may have a limiting boss that is spaced apart along the axial direction of the drive rod 4. The upper surface of the limiting boss is an arc surface that matches the outer wall of the drive rod 4. The positioning boss is used to insert between the two limiting bosses under the action of gravity to limit the axial direction of the drive rod 4. In some embodiments, the drive rod 4 may also have an annular limiting boss that is spaced apart protruding from its center, and the inner wall of the drive groove 31 may have a positioning boss that is spaced apart. The upper surface of the positioning boss is an arc surface that matches the outer wall of the drive rod 4.

[0048] In some embodiments, the inner ring of the annular positioning component is provided with a connecting structure for connecting with an annular positioning block component of a preset thickness to match the diameter of the target rotor. Taking the inner ring surface as the first half-ring surface and the second half-ring surface as an example, the annular positioning block component is designed as the first half-ring positioning block and the second half-ring positioning block, which are respectively matched and installed on the first half-ring surface and the second half-ring surface. Annular positioning block components of different thicknesses are designed for rotors of different sizes and specifications. The inner ring surface size of the annular positioning block component matches the size of the rotor, thereby adapting to the dynamic balance test of rotors of different specifications and improving the applicability of the device.

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

[0050] On the other hand, this preferred embodiment also 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: Conduct a rotor dynamic balancing test and calculate the unbalance phase; this is done by referring to existing dynamic balancing test methods, which will not be elaborated on in detail.

[0052] S2. Install the annular positioning assembly on the target rotor, and rotate the rotor or the annular positioning assembly circumferentially to make the angle mark correspond to the zero position marked on the target rotor; specifically, after roughly aligning the first and second semi-annular surfaces of the positioning device in the open state with the target rotor, apply force with a tool to rotate the drive rod in the forward direction to move the first and second positioning components toward each other to clamp the rotor. Before clamping, rotate the annular positioning assembly circumferentially to make the angle mark correspond to the zero position marked on the target rotor, thus completing the positioning and fixing.

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

[0054] S4. Perform the material removal process according to the instructions of the marking component; the material removal process is implemented with reference to the existing dynamic balancing test method, and will not be described in detail.

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

[0056] By applying the above-mentioned rotor dynamic balancing positioning device, the phase positioning accuracy is high, which effectively improves the accuracy of dynamic balancing material removal, reduces the number of material removals, and greatly improves the efficiency and balancing effect of high-speed rotor dynamic balancing test.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A high-speed dynamic balancing and positioning device for a rotor, characterized in that, include: A ring-shaped positioning assembly is used to be fitted onto the target rotor and positioned and fixed to the target rotor and concentric with the target rotor. The surface of the ring-shaped positioning assembly is provided with angle markings (9). The ring-shaped positioning assembly includes a first positioning element (1), a second positioning element (2), and a third positioning element (3). The outer contour of the first positioning element (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 element (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 element (3) includes a third outer arc surface and a fifth mating surface in sequence. The first positioning element (1) The first and second positioning components (2) are symmetrical structures. The first outer arc surface, the second outer arc surface, and the third outer arc surface together form the outer ring surface of the annular positioning component. The first mating surface (11) mates with the third mating surface (21), and the second mating surface (12) and the fourth mating surface (22) mate with the fifth mating 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 towards or away from each other. The inner ring surface of the annular positioning component includes a first half-ring surface formed on the first positioning component (1) and a second half-ring surface formed on the second positioning component (2). Alternatively, 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); the driving mechanism includes a driving rod (4) arranged along the moving direction of the first positioning member (1), the two ends of the driving rod (4) being threadedly connected to the first positioning member (1) and the second positioning member (2) respectively; the driving rod (4) is axially limited and circumferentially rotated on the third positioning member (3); a driving groove (31) is opened on the fifth mating surface along the moving direction of the first positioning member (1), the driving groove (31) Both ends of the drive rod (4) are connected to the third outer arc surface; the second mating surface (12) and the fourth mating surface (22) are respectively provided with connecting blocks (13) that match the axial position of the drive groove (31). The width of the connecting block (13) is smaller than the width of the drive groove (31) so as to be inserted into the drive groove (31). The connecting block (13) is provided with an internal thread for engaging with the external thread of the drive rod (4); the end of the drive rod (4) is provided with a force-applying structure (41) for applying force with an external tool to drive the drive rod (4) to rotate circumferentially, thereby driving the first positioning member (1) and the second positioning member (2) to move towards or away from each other; The marking component is fixedly set at a preset circumferential position of the annular positioning component to cooperate with the angle marking (9) to mark the current angle of the rotor.

2. The rotor high-speed dynamic balancing and positioning device according to claim 1, characterized in that, The marking component includes a fastener (6) for fixing to the outer ring of the annular positioning component and an indicator pin (5) fixedly disposed on the fastener (6) radially along the annular positioning component.

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

4. The rotor high-speed dynamic balancing and positioning device according to claim 1, characterized in that, The driving rod (4) has an annular positioning boss (42) protruding from its middle part, and the inner wall of the driving groove (31) has spaced limiting bosses protruding from its inner wall. The upper surface of the limiting bosses is an arc surface that matches the outer wall of the driving rod (4). The positioning bosses are used to insert between the two limiting bosses under the action of gravity to limit the axial movement of the driving rod (4). Alternatively, the driving rod (4) has an annular positioning boss (42) protruding from its middle part, and the inner wall of the driving groove (31) has a limiting groove that matches the annular positioning boss (42). Alternatively, the driving rod (4) has an annular limiting boss protruding from its middle part, and the inner wall of the driving groove (31) has a positioning boss protruding from its inner wall. The upper surface of the positioning bosses is an arc surface that matches the outer wall of the driving rod (4).

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

6. The rotor high-speed dynamic balancing and positioning device according to any one of claims 1-5, characterized in that, The inner ring of the annular positioning component is provided with a connecting structure, which is used to connect with an annular positioning block component of a preset thickness to match the diameter of the target rotor.

7. A method for high-speed dynamic balancing of a rotor, characterized in that, The rotor high-speed dynamic balancing and positioning device according to any one of claims 1-6 is used, and the test method includes: S1. Conduct a rotor dynamic balancing test and calculate the unbalance phase; S2. Install the annular positioning component on the target rotor, and rotate the rotor circumferentially to adjust it or adjust the annular positioning component so that the angle mark corresponds to the zero position marked on the target rotor; S3. Adjust the indicator component to the corresponding circumferential position according to the calculated unbalanced phase; S4. Perform the material removal process according to the instructions on the labeling components; S5. Repeat steps S2-S4 until the imbalance is lower than the preset value, and the dynamic balancing test ends.

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