Correction method for labyrinth run-out detection, processing device, storage medium and computer program product

Abstract

The invention provides a labyrinth run-out detection correction method, a processing device, a storage medium and a computer program product. The labyrinth run-out detection correction method comprises the following steps: placing a to-be-detected engine rotor and a to-be-detected labyrinth on a rotary table of a run-out detection device; obtaining labyrinth run-out data of a to-be-measured labyrinth, first run-out data of a first reference of a to-be-measured engine rotor and second run-out data of a second reference; and carrying out projection conversion on the labyrinth run-out data, the first run-out data and the second run-out data to obtain corrected labyrinth run-out data. The correction method for labyrinth run-out detection can improve the precision of labyrinth run-out detection.

Description

Technical Field

[0001] This invention relates to the field of aero-engine technology, and in particular to a correction method, processing device, storage medium, and computer program product for detecting tooth runout. Background Technology

[0002] During the assembly of aero-engine rotors, it is necessary to inspect the runout of each stage of the mounting edge and the grating teeth used for sealing after assembly in order to determine the change in rotor-stator clearance after assembly.

[0003] However, due to the angular structure of the grating teeth, during the runout detection process, the measurement adjustment is based on the front journal reference. Therefore, the axis of the front journal position is basically coincident with the axis of the turntable during measurement. However, the axis of the measuring grating teeth does not coincide with the measurement axis. This means that the angular structure of the grating teeth cannot be guaranteed to coincide with the measurement centerline of the probe during the measurement process. This results in a large difference between the measurement results and the actual runout. This difference leads to significant discrepancies when using the measurement results for analysis, making accurate analysis impossible. Summary of the Invention

[0004] The purpose of this invention is to provide a correction method, processing device, storage medium, and computer program product for detecting tooth runout, which can improve the accuracy of tooth runout detection.

[0005] One aspect of the present invention provides a correction method for grating tooth runout detection, comprising: placing an engine rotor to be tested and a grating tooth to be tested on a turntable of a runout detection device; acquiring grating tooth runout data of the grating tooth to be tested, first runout data of a first reference of the engine rotor to be tested, and second runout data of a second reference; and projecting and transforming the grating tooth runout data, the first runout data, and the second runout data to obtain corrected grating tooth runout data.

[0006] In one embodiment, acquiring the tooth runout data of the tooth under test, the first runout data of the first reference of the engine rotor under test, and the second runout data of the second reference includes: pressing the probe of the runout detection device against the tooth under test; rotating the turntable to acquire the circumferential angle and circumferential runout value corresponding to the measuring point, as tooth runout data.

[0007] In one embodiment, the step of placing the probe of the vibration detection device against the tooth to be tested further includes: rotating the turntable and adjusting the tilting structure of the turntable so that the edges of the probe and the tooth to be tested coincide.

[0008] In one embodiment, acquiring the tooth runout data of the tooth to be tested, the first runout data of the first reference of the engine rotor to be tested, and the second runout data of the second reference further includes: pressing the probe against the second reference of the engine rotor to be tested; rotating the turntable to acquire the circumferential angle and circumferential runout value corresponding to the measuring point as the second runout data.

[0009] In one embodiment, the step of placing the probe against the second reference of the engine rotor under test further includes: rotating the turntable and adjusting the self-aligning structure of the turntable so that the central axis of the engine rotor under test coincides with the central axis of the turntable.

[0010] In one embodiment, acquiring the tooth runout data of the tooth to be tested, the first runout data of the first reference of the engine rotor to be tested, and the second runout data of the second reference further includes: placing the probe on the first reference of the engine rotor to be tested; rotating the turntable to acquire the circumferential angle and circumferential runout value corresponding to the measuring point, as the first runout data.

[0011] In one embodiment, the fly hood runout data, the second runout data, and the first runout data are projected and transformed to obtain corrected fly hood runout data, wherein the corrected fly hood runout data is obtained according to the following relationship:

[0012]

[0013] Where x, y, u, v, and w are intermediate parameters, f and g are least squares equations, and a is... The second benchmark The radius of the jump, rb is The First benchmark The radius of the jump, rc is the radius of the jump of the comb teeth, g i Let a be the circumferential angle corresponding to the i-th measuring point. i b is the circumferential runout value corresponding to the i-th measuring point in the second runout data. i c is the circumferential runout value corresponding to the i-th measuring point in the first runout data. i d represents the circumferential runout value corresponding to the i-th measuring point in the comb tooth runout data. i Let be the circumferential runout value corresponding to the i-th measuring point in the corrected tooth runout data, h be the distance between the location of the tooth to be tested and the first reference, n be the number of measuring points, and r be the actual radius of the second reference.

[0014] Another aspect of the present invention provides a processing apparatus for detecting tooth runout, comprising: a memory; and a processor connected to the memory and configured to implement a correction method for tooth runout detection as described in any of the above embodiments.

[0015] Another aspect of the present invention provides a storage medium for storing non-transitory computer instructions, which, when executed, perform a correction method for tooth runout detection as described in any of the above embodiments.

[0016] Another aspect of the present invention provides a computer program product, including a computer program that, when executed by a processor, implements a correction method for fang runout detection as described in any of the above embodiments.

[0017] The correction method for detecting tooth runout in this invention directly uses the tooth as the measurement reference, rather than measuring based on the previous journal reference. By monitoring the runout of the reference at this time, and using reference projection analysis, the results are transformed and the reference is reconstructed to realize the tooth runout result relative to the previous reference. This solves the problem that the difference between the tooth measurement result and the actual runout is large due to the difference in the coincidence degree between the probe axis and the tooth edge during the measurement process. This improves the detection accuracy of engine tooth runout and the detection efficiency of the engine. Attached Figure Description

[0018] The above and other features, properties and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a schematic diagram of the engine rotor and grating teeth of the present invention;

[0020] Figure 2 This is a schematic flowchart of an embodiment of the correction method for detecting fly rot according to the present invention;

[0021] Figure 3 This is a schematic flowchart of another embodiment of the correction method for detecting tooth runout according to the present invention. Detailed Implementation

[0022] Reference will now be made in detail to embodiments of the invention, one or more examples of which are illustrated in the accompanying drawings. Each example is provided to explain the invention and not to limit it. In fact, it will be apparent to those skilled in the art that various modifications and variations may be made to the invention without departing from the scope or spirit thereof. For example, a feature shown or described as part of one embodiment may be used with another embodiment to produce yet another embodiment. Therefore, the invention is intended to cover these modifications and variations that fall within the scope of the appended claims and their equivalents.

[0023] As used herein, the term "axial" refers to the central axis of a structure or the direction parallel to the central axis of the structure, and the term "radial" refers to the direction perpendicular to the "axial".

[0024] Figure 1 An embodiment of the correction method for detecting fly tooth runout according to the present invention is shown. The correction method for detecting fly tooth runout according to the present invention includes steps S100 to S300:

[0025] In step S100, the engine rotor to be tested and the grating teeth to be tested are placed on the turntable of the runout detection device.

[0026] In step S200, the tooth runout data of the tooth to be tested, the first runout data of the first reference of the engine rotor to be tested, and the second runout data of the second reference are acquired.

[0027] In step S300, the tooth runout data, the first runout data, and the second runout data are projected and transformed to obtain the corrected tooth runout data.

[0028] The runout data in the correction method of this invention includes the circumferential angle of the measuring point and the corresponding circumferential runout value. The runout detection device includes a turntable and a probe. The turntable is used to place the workpiece under test; the probe is a sensor structure. In this invention, the workpiece under test is as follows: Figure 2 The front journal 20 and the test tooth 10 of the engine rotor are shown. The test tooth 10 has an angular structure in the circumferential direction.

[0029] The correction method for detecting tooth runout in this invention directly uses the tooth as the measurement reference, rather than measuring based on the previous journal reference. By monitoring the runout of the reference at this time, and using reference projection analysis, the results are transformed and the reference is reconstructed to realize the tooth runout result relative to the previous reference. This solves the problem that the difference between the tooth measurement result and the actual runout is large due to the difference in the coincidence degree between the probe axis and the tooth edge during the measurement process. This improves the detection accuracy of engine tooth runout and the detection efficiency of the engine.

[0030] In step S100, the engine rotor to be tested and the grating teeth 10 to be tested can be fixed on the turntable by means of a device such as a three-jaw chuck.

[0031] In one embodiment, step S200 further includes steps S201 to S203:

[0032] In step S201, the probe of the runout detection device is placed against the tooth 10 to be tested. (See reference...) Figure 2 The position indicated by the middle arrow is the corner of the tooth 10 to be tested.

[0033] In step S202, the turntable is rotated, and the tilting structure of the turntable is adjusted so that the probe and the edge of the tooth 10 to be measured coincide. In this way, the measuring axis of the measuring probe basically coincides with the edge of the tooth 10 to be measured during the measurement process, which can ensure that the measuring points are distributed on the circumferential edge of the tooth 10 to be measured, thus ensuring the accuracy of the measurement.

[0034] In step S203, the turntable is rotated to obtain the circumferential angle and circumferential runout value corresponding to the measuring point, which are used as the tooth runout data. The tooth runout data is denoted as:

[0035] {(g1,c1),(g2,c2)…(g n ,c n )}

[0036] Among them, g i Let c be the circumferential angle corresponding to the i-th measuring point. i denoted as circumferential runout value corresponding to the i-th measuring point in the comb tooth runout data, where n is the number of measuring points.

[0037] In one embodiment, step S200 further includes steps S204 to S206:

[0038] In step S204, the probe is placed against the second reference point of the engine rotor under test. The second reference point can be selected as the radial location of the front journal 20 of the engine rotor under test, referring to... Figure 2 Point B in the text.

[0039] In step S205, the turntable is rotated and the self-aligning structure of the turntable is adjusted so that the central axis of the rotor of the engine under test coincides with the central axis of the turntable.

[0040] In step S206, the turntable is rotated to obtain the circumferential angle and circumferential runout value corresponding to the measuring point, which are used as the second runout data. The second runout data is denoted as:

[0041] {(g1,b1),(g2,b2)…(g n ,b n )}

[0042] Among them, g i Let b be the circumferential angle corresponding to the i-th measuring point. i is the circumferential runout value corresponding to the i-th measurement point in the second runout data, and n is the number of measurement points.

[0043] In steps S202 and S205, the tilting structure and the self-aligning structure can adjust the position and posture of the workpiece before assembly, and improve the coaxiality between the rotation axis of the measured workpiece and the rotation axis of the turntable.

[0044] In one embodiment, step S200 further includes steps S207 to S208:

[0045] In step S207, the probe is placed on the first reference point of the engine rotor under test. The first reference point can be selected as the end face of the front journal 20 of the engine rotor under test, for reference... Figure 2 Point A in the diagram.

[0046] In step S208, the turntable is rotated to obtain the circumferential angle and circumferential runout value corresponding to the measuring point, which are used as the first runout data. The first runout data is denoted as:

[0047] {(g1,a1),(g2,a2)…(g n ,a n )}

[0048] Among them, g i Let a be the circumferential angle corresponding to the i-th measuring point. i is the circumferential runout value corresponding to the i-th measurement point in the first runout data, and n is the number of measurement points.

[0049] In one embodiment, the corrected tooth runout data in step S300 is obtained according to relation (1):

[0050]

[0051] Where x, y, u, v, and w are all intermediate parameters, x and y are the X-axis and Y-axis coordinates of the coordinate system formed by the second reference relative to the tooth to be measured, i.e., the direction vector of B at the radial position of the front journal 20; u, v, and w are the coordinates of the coordinate system formed by the first reference relative to the tooth to be measured, i.e., the direction vector of A at the end face of the front journal 20; f and g are both least square equations, and ra is the second benchmark The radius of the jump, where rb is the first benchmark The radius of the jump, rc is the radius of the jump of the comb teeth, g i Let a be the circumferential angle corresponding to the i-th measuring point. i b is the circumferential runout value corresponding to the i-th measuring point in the second runout data. i c is the circumferential runout value corresponding to the i-th measurement point in the first runout data. i Let d be the circumferential runout value corresponding to the i-th measuring point in the comb tooth runout data. i The circumferential runout value corresponding to the i-th measuring point in the corrected tooth runout data is given by h, which is the distance between the location of the tooth to be measured and the first reference (this distance is a theoretical value), n is the number of measuring points, and r is the actual radius of the second reference (i.e., the radius of A at the radial position of the front axle journal 20).

[0052] The above embodiments improve the accuracy of engine tooth runout detection by analyzing the runout results.

[0053] In conjunction with the above embodiments, Figure 3 Another embodiment of the correction method for detecting tooth runout according to the present invention is shown. For example... Figure 3 As shown, the correction method of the present invention includes the following steps:

[0054] In step S100, the engine rotor to be tested and the toothed 10 to be tested are placed on the turntable of the runout detection device.

[0055] In step S201, the probe of the runout detection device is placed against the tooth 10 to be tested. (See reference...) Figure 2 The location indicated by the middle arrow.

[0056] In step S202, the turntable is rotated and the tilting structure of the turntable is adjusted so that the edges of the probe and the tooth 10 to be tested coincide.

[0057] In step S203, the turntable is rotated to obtain the circumferential angle and circumferential runout value corresponding to the measuring point, which are used as the tooth runout data.

[0058] In step S204, the probe is placed against the second reference of the engine rotor to be tested.

[0059] In step S205, the turntable is rotated and the self-aligning structure of the turntable is adjusted so that the central axis of the rotor of the engine under test coincides with the central axis of the turntable.

[0060] In step S206, the turntable is rotated to obtain the circumferential angle and circumferential runout value corresponding to the measuring point, which are used as the second runout data.

[0061] In step S207, the probe is placed on the first reference of the engine rotor to be tested.

[0062] In step S208, the turntable is rotated to obtain the circumferential angle and circumferential runout value corresponding to the measuring point, which are used as the first runout data.

[0063] In step S300, the tooth runout data, the first runout data, and the second runout data are projected and transformed to obtain the corrected tooth runout data.

[0064] The order of steps S201 to S203, S204 to S206, and S207 to S208 can be changed, and is not limited to the execution steps described in this embodiment.

[0065] The processing apparatus for detecting tooth runout of the present invention includes a memory and a processor, the processor being connected to the memory and configured to implement a correction method for tooth runout detection as described in any of the above embodiments.

[0066] The storage medium of the present invention is used to store non-transitory computer instructions, which, when executed, perform a correction method for tooth runout detection as described in any of the above embodiments.

[0067] The computer program product of the present invention includes a computer program. When executed by a processor, the computer program implements a correction method for tooth runout detection as described in any of the above embodiments.

[0068] Embodiments of the subject matter described in this specification can be implemented as one or more computer programs, i.e., one or more modules of computer program instructions encoded on a tangible, non-transitory program carrier for execution by a data processing apparatus or for controlling the operation of a data processing apparatus. Alternatively or additionally, the program instructions may be encoded on artificially generated propagation signals, such as machine-generated electrical, optical, or electromagnetic signals, which are generated to encode information and transmit it to a suitable receiving device for execution by the data processing apparatus.

[0069] Computer storage media can be machine-readable storage devices, machine-readable storage substrates, random or serial access memory devices, or combinations thereof.

[0070] Suitable computers for executing computer programs include, for example, general-purpose and / or special-purpose microprocessors, or any other type of central processing unit. Typically, the central processing unit receives instructions and data from read-only memory and / or random access memory. The basic components of a computer include a central processing unit for implementing or executing instructions and one or more memory devices for storing instructions and data. Typically, a computer will also include one or more mass storage devices for storing data, such as disks, magneto-optical disks, or optical disks, or the computer will be operatively coupled to such mass storage devices to receive data from or transfer data to them, or both. However, a computer is not required to have such devices. Furthermore, a computer can be embedded in another device, such as a mobile phone, a personal digital assistant (PDA), a mobile audio or video player, a game console, a global positioning system (GPS) receiver, or a portable storage device such as a universal serial bus (USB) flash drive, to name a few.

[0071] Computer-readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media, and memory devices, such as semiconductor memory devices (e.g., EPROM, EEPROM, and flash memory devices), magnetic disks (e.g., internal hard disks or removable disks), magneto-optical disks, and CD-ROM and DVD-ROM disks. Processors and memory may be supplemented by or incorporated into dedicated logic circuitry.

[0072] The correction method for serration runout detection of the present invention can solve the problems of improving the accuracy of serration runout and improving the accuracy during clearance analysis, thereby improving the accuracy of engine sealing clearance analysis, making the detection accuracy and analysis accuracy both consistent, reducing engine inspection costs, and improving the assembly qualification rate.

[0073] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any variations and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the invention, fall within the protection scope defined by the claims of the present invention.

Claims

1. A correction method for detecting fly tooth runout, characterized in that, include: Place the engine rotor and the grating teeth to be tested on the turntable of the runout detection device; Acquire the tooth runout data of the tooth under test, the first runout data of the first reference of the rotor of the engine under test, and the second runout data of the second reference; The tooth runout data, the first runout data, and the second runout data are projected and transformed to obtain the corrected tooth runout data.

2. The correction method as described in claim 1, characterized in that, The acquisition of the tooth runout data of the tooth under test, the first runout data of the first reference of the engine rotor under test, and the second runout data of the second reference includes: The probe of the vibration detection device is pressed against the tooth to be tested; Rotate the turntable to obtain the circumferential angle and circumferential runout value corresponding to the measuring point, which are used as the comb tooth runout data.

3. The correction method as described in claim 2, characterized in that, The step of placing the probe of the vibration detection device against the tooth to be tested further includes: Rotate the turntable and adjust its tilting structure so that the edges of the probe and the tooth to be tested coincide.

4. The correction method as described in claim 3, characterized in that, The process of acquiring the tooth runout data of the tooth under test, the first runout data of the first reference of the engine rotor under test, and the second runout data of the second reference also includes: The probe is placed against the second reference of the rotor of the engine under test; Rotate the turntable to obtain the circumferential angle and circumferential runout value corresponding to the measuring point, which are used as the second runout data.

5. The correction method as described in claim 4, characterized in that, The step of placing the probe against the second reference of the engine rotor under test further includes: Rotate the turntable and adjust its self-aligning structure so that the central axis of the engine rotor under test coincides with the central axis of the turntable.

6. The correction method as described in claim 4, characterized in that, The process of acquiring the tooth runout data of the tooth under test, the first runout data of the first reference of the engine rotor under test, and the second runout data of the second reference also includes: The probe is placed on the first reference of the rotor of the engine under test; Rotate the turntable to obtain the circumferential angle and circumferential runout value corresponding to the measuring point, which are used as the first runout data.

7. The correction method according to any one of claims 1-6, characterized in that, The process involves projecting and transforming the tooth runout data, the first runout data, and the second runout data to obtain corrected tooth runout data. The corrected tooth runout data is derived according to the following formula: Where x, y, u, v, and w are intermediate parameters, f and g are least squares equations, and ra is... The The radius of the second reference jump, rb, is... The The radius of the first reference runout, rc is the radius of the comb tooth runout, g i Let a be the circumferential angle corresponding to the i-th measuring point. i b is the circumferential runout value corresponding to the i-th measuring point in the second runout data. i c is the circumferential runout value corresponding to the i-th measuring point in the first runout data. i d represents the circumferential runout value corresponding to the i-th measuring point in the comb tooth runout data. i Let be the circumferential runout value corresponding to the i-th measuring point in the corrected tooth runout data, h be the distance between the location of the tooth to be tested and the first reference, n be the number of measuring points, and r be the actual radius of the second reference.

8. A processing device for detecting tooth runout, characterized in that, include: Memory; as well as A processor, connected to the memory, and configured to implement the correction method for detecting tooth runout as described in any one of claims 1-7.

9. A storage medium, characterized in that, Used to store non-transitory computer instructions, which, when executed, perform the correction method for tooth runout detection as described in any one of claims 1-7.

10. A computer program product, comprising a computer program, characterized in that, When executed by a processor, the computer program implements the correction method for detecting tooth runout as described in any one of claims 1-7.

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