Gear fault detection method, device, medium, equipment and system

Abstract

The present disclosure relates to a gear fault detection method, device, medium, equipment and system. The method comprises: acquiring a first vibration signal of a to-be-tested gear during meshing with a standard gear during clockwise rotation of the to-be-tested gear; acquiring a second vibration signal of the to-be-tested gear during meshing with the standard gear during counterclockwise rotation of the to-be-tested gear; performing shaft separation signal processing on the first vibration signal and the second vibration signal respectively to obtain a first time domain signal and a second time domain signal of a rotation shaft of the to-be-tested gear; and determining that the to-be-tested gear has edge chipping based on the first time domain signal and / or the second time domain signal. The technical solution provided by the present disclosure can detect edge chipping on the gear, especially slight edge chipping, thereby improving the accuracy of the gear fault detection method.

Description

Technical Field

[0001] This disclosure relates to the field of gear fault detection technology, and in particular to a gear fault detection method, apparatus, medium, equipment and system. Background Technology

[0002] Existing gear fault detection methods typically employ linear sensors to detect the displacement signal of a standard gear, using this signal to determine if the gear is faulty. However, this method usually only detects large impact damage to the gear, failing to accurately detect minor impact damage on the gear's edges. Therefore, existing gear fault detection methods suffer from low accuracy. Summary of the Invention

[0003] To address the aforementioned technical problems, this disclosure provides a gear fault detection method, apparatus, medium, equipment, and system.

[0004] This disclosure provides a gear fault detection method, including:

[0005] Acquire the first vibration signal during the clockwise rotation of the gear under test and the meshing process between the gear under test and the standard gear;

[0006] Acquire the second vibration signal during the counterclockwise rotation of the gear under test and the meshing process between the gear under test and the standard gear;

[0007] The first vibration signal and the second vibration signal are respectively processed by shaft separation signal processing to obtain the first time domain signal and the second time domain signal of the rotating shaft where the gear under test is located;

[0008] Based on the first time-domain signal and / or the second time-domain signal, it is determined that the edge of the gear under test has dents or scratches.

[0009] In some embodiments, determining that the edge of the gear under test has dents or scratches based on the first time-domain signal and / or the second time-domain signal includes:

[0010] Obtain the peak value and / or root mean square value of the first time-domain signal, and the peak value and / or root mean square value of the second time-domain signal;

[0011] When the peak value and / or root mean square value of the first time domain signal are greater than the first preset signal threshold, and / or the peak value and / or root mean square value of the second time domain signal are greater than the second preset signal threshold, it is determined that the edge of the gear under test has dents or scratches.

[0012] In some embodiments, the method further includes:

[0013] Based on the first time-domain signal and the second time-domain signal, determine the first-order spectrum corresponding to the first time-domain signal and the second-order spectrum corresponding to the second time-domain signal;

[0014] Based on the first-order spectrum and / or the second-order spectrum, the fault type of the gear under test is determined.

[0015] In some embodiments, determining the first-order spectrum corresponding to the first time-domain signal and the second-order spectrum corresponding to the second time-domain signal based on the first time-domain signal and the second time-domain signal includes:

[0016] The first time-domain signal and the second time-domain signal are respectively subjected to Fourier transform processing to obtain the first-order spectrum and the second-order spectrum.

[0017] In some embodiments, determining the fault type of the gear under test based on the first-order spectrum and / or the second-order spectrum includes:

[0018] Based on the first order spectrum, the first vibration noise value during the meshing process between the gear under test and the standard gear is determined;

[0019] Based on the second-order spectrum, the second vibration noise value during the meshing process between the gear under test and the standard gear is determined;

[0020] When the first vibration noise value is greater than the first preset noise threshold, and / or the second vibration noise value is greater than the second preset noise threshold, the fault type of the gear under test is determined to be at least one of the following: gear parameter deviation fault, tooth surface concavity and radial runout error fault, and regular pitch deviation fault.

[0021] The first vibration noise value and the second vibration noise value both include the values ​​of the main frequency, harmonic frequency and fractional frequency order during the meshing process between the gear under test and the standard gear.

[0022] In some embodiments, determining the fault type of the gear under test based on the first-order spectrum and / or the second-order spectrum includes:

[0023] When at least some order data in the first order spectrum is greater than the order data in the first preset curve, and / or at least some order data in the second order spectrum is greater than the order data in the second preset curve, the fault type of the gear under test is determined to be a ripple fault and / or...

[0024] Or rust spots or other defects.

[0025] This public also provides a gear fault detection device, including:

[0026] The vibration signal acquisition module is used to acquire the vibration signal during the clockwise rotation of the gear under test.

[0027] The first vibration signal during the meshing process of the gear under test and the standard gear; and the second vibration signal during the counterclockwise rotation of the gear under test and the meshing process of the gear under test and the standard gear.

[0028] The time-domain signal determination module is used to perform shaft separation signal processing on the first vibration signal and the second vibration signal respectively to obtain the first vibration signal of the rotating shaft where the gear under test is located.

[0029] Time-domain signal and second-time-domain signal;

[0030] 5. Fault type determination module, used to determine the fault type based on the first time domain signal and / or the second time domain signal.

[0031] The domain signal determines that the edge of the gear under test has dents or scratches.

[0032] This public also provides a computer-readable storage medium storing a program or instructions that cause a computer to perform the steps of the gear fault detection method described above.

[0033] This public document also provides an electronic device, including:

[0034] One or more processors;

[0035] Memory, used to store one or more programs or instructions;

[0036] The processor executes the steps of the method described above by calling programs or instructions stored in the memory.

[0037] Five disclosures also provide a gear fault detection system, including a vibration signal sensor and

[0038] Controller;

[0039] The vibration signal sensor is used to detect vibration signals during the meshing process between the standard gear and the gear under test;

[0040] The controller is used to perform the steps of the gear fault detection method described above.

[0041] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0042] The technical solution provided in this disclosure acquires a first vibration signal during the clockwise rotation of the gear under test and its meshing with a standard gear. It also acquires a second vibration signal during the counter-clockwise rotation of the gear under test and its meshing with the standard gear. This requires the gear under test to be detected twice, in both forward and reverse directions, to acquire the first and second vibration signals respectively. The first and second vibration signals are then processed using shaft separation signal processing to obtain a first time-domain signal and a second time-domain signal of the rotating shaft where the gear under test is located. Based on the first and / or second time-domain signals, it is determined that the edge of the gear under test has dents or scratches. Since the vibration signal includes both the vibration signal of the gear under test and the vibration signal of the standard gear, shaft separation signal processing is performed on the vibration signal. The resulting first and second time-domain signals both correspond to the time-domain signals of the rotating shaft where the gear under test is located. Analysis of the first and / or second time-domain signals directly reflects the fault information of the gear under test, without including fault information of the standard gear. Meanwhile, the first time domain signal and / or the second time domain signal can detect dents and scratches on the gear edge, especially minor dents and scratches on the gear edge, thereby improving the accuracy of the gear fault detection method. Attached Figure Description

[0043] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0044] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0045] Figure 1 A gear fault detection method provided in this disclosure embodiment;

[0046] Figure 2 This is yet another gear fault detection method provided in the embodiments of the present disclosure;

[0047] Figure 3 This is yet another gear fault detection method provided in the embodiments of the present disclosure;

[0048] Figure 4 This is yet another gear fault detection method provided in the embodiments of the present disclosure;

[0049] Figure 5 A structural block diagram of a gear fault detection device provided in this embodiment of the present disclosure;

[0050] Figure 6This is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of this disclosure. Detailed Implementation

[0051] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0052] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0053] This disclosure provides a gear fault detection method, which can be executed by a gear fault detection device, which can be implemented in software and / or hardware. Figure 1 A gear fault detection method provided in this disclosure embodiment, such as Figure 1 As shown, the method includes the following steps:

[0054] S110. Acquire the first vibration signal during the clockwise rotation of the gear under test and the meshing process between the gear under test and the standard gear.

[0055] For example, the first vibration signal during the meshing process of the gear under test and the standard gear can be obtained when the gear under test rotates clockwise at least four times. Preferably, for example, the first vibration signal during the meshing process of the gear under test and the standard gear can be obtained when the gear under test rotates clockwise fifty times.

[0056] S120. Acquire the second vibration signal during the counterclockwise rotation of the gear under test and the meshing process between the gear under test and the standard gear.

[0057] For example, a second vibration signal can be acquired during the meshing process of the gear under test and the standard gear when the gear under test rotates counterclockwise at least four times. Preferably, for example, a second vibration signal can be acquired during the meshing process of the gear under test and the standard gear when the gear under test rotates counterclockwise fifty times.

[0058] S130. Perform shaft separation signal processing on the first vibration signal and the second vibration signal respectively to obtain the first time domain signal and the second time domain signal of the rotating shaft where the gear under test is located.

[0059] Specifically, the first vibration signal is processed by shaft separation signal processing to obtain the first time domain signal of the rotating shaft where the gear under test is located; and the second vibration signal is processed by shaft separation signal processing to obtain the second time domain signal of the rotating shaft where the gear under test is located.

[0060] S140. Based on the first time domain signal and / or the second time domain signal, determine that there are dents or scratches on the edge of the gear under test.

[0061] The technical solution provided in this disclosure acquires a first vibration signal during the clockwise rotation of the gear under test and its meshing with a standard gear. It also acquires a second vibration signal during the counter-clockwise rotation of the gear under test and its meshing with the standard gear. This requires the gear under test to be detected twice, in both forward and reverse directions, to acquire the first and second vibration signals respectively. The first and second vibration signals are then processed using shaft separation signal processing to obtain a first time-domain signal and a second time-domain signal of the rotating shaft where the gear under test is located. Based on the first and / or second time-domain signals, it is determined that the edge of the gear under test has dents or scratches. Since the vibration signal includes both the vibration signal of the gear under test and the vibration signal of the standard gear, shaft separation signal processing is performed on the vibration signal. The resulting first and second time-domain signals both correspond to the time-domain signals of the rotating shaft where the gear under test is located. Analysis of the first and / or second time-domain signals directly reflects the fault information of the gear under test, without including fault information of the standard gear. Meanwhile, the first time domain signal and / or the second time domain signal can detect dents and scratches on the gear edge, especially minor dents and scratches on the gear edge, thereby improving the accuracy of the gear fault detection method.

[0062] In some embodiments, step S140, determining that the edge of the gear under test has dents or scratches based on the first time-domain signal and / or the second time-domain signal, includes:

[0063] Obtain the peak value and / or root mean square value of the first time-domain signal, and the peak value and / or root mean square value of the second time-domain signal.

[0064] When the peak value and / or root mean square value of the first time domain signal are greater than the first preset signal threshold, and / or the peak value and / or root mean square value of the second time domain signal are greater than the second preset signal threshold, it is determined that the edge of the gear under test has dents or scratches.

[0065] The technical solution provided in this disclosure compares the peak value and / or root mean square (RMS) of a first time-domain signal with a first preset signal threshold, and / or the peak value and / or RMS of a second time-domain signal with a second preset signal threshold. When the peak value and / or RMS of the first time-domain signal is greater than the first preset signal threshold, and / or the peak value and / or RMS of the second time-domain signal is greater than the second preset signal threshold, it is determined that the edge of the gear under test has dents or scratches. In this way, minor dents or scratches on the gear edge can be detected using the first time-domain signal and / or the second time-domain signal, thereby improving the accuracy of the gear fault detection method. The method is simple and easy to implement.

[0066] Figure 2Another gear fault detection method provided in this disclosure embodiment, such as Figure 2 As shown, the method includes the following steps:

[0067] S110. Acquire the first vibration signal during the clockwise rotation of the gear under test and the meshing process between the gear under test and the standard gear.

[0068] S120. Acquire the second vibration signal during the counterclockwise rotation of the gear under test and the meshing process between the gear under test and the standard gear.

[0069] S130. Perform shaft separation signal processing on the first vibration signal and the second vibration signal respectively to obtain the first time domain signal and the second time domain signal of the rotating shaft where the gear under test is located.

[0070] S150. Based on the first time-domain signal and the second time-domain signal, determine the first-order spectrum corresponding to the first time-domain signal and the second-order spectrum corresponding to the second time-domain signal.

[0071] S160. Based on the first-order spectrum and / or the second-order spectrum, determine the fault type of the gear under test.

[0072] The technical solution provided in this disclosure acquires a first vibration signal during the clockwise rotation of the gear under test and its meshing with a standard gear. It also acquires a second vibration signal during the counter-clockwise rotation of the gear under test and its meshing with the standard gear. This requires the gear under test to be detected twice, in both forward and reverse directions, to acquire the first and second vibration signals respectively. The first and second vibration signals are then processed by shaft separation signal processing to obtain a first time-domain signal and a second time-domain signal of the rotating shaft where the gear under test is located. Based on these first and second time-domain signals, an order spectrum is formed by the order signals generated during the meshing process between the gear under test and the standard gear. Based on this order spectrum, the fault type of the gear under test is determined. This determined order spectrum can more accurately reflect whether the gear under test has a fault and the type of fault. For example, it can determine that the fault type of the gear under test is at least one of the following: gear parameter deviation fault, tooth surface concavity and radial runout error, regular pitch deviation fault, ripple fault, and rust spot fault. The method is simple and easy to implement.

[0073] In some embodiments, step S150, determining the first-order spectrum corresponding to the first time-domain signal and the second-order spectrum corresponding to the second time-domain signal based on the first time-domain signal and the second time-domain signal, includes:

[0074] The first time-domain signal and the second time-domain signal are processed by Fourier transform to obtain the first-order spectrum and the second-order spectrum, respectively.

[0075] Specifically, the first-order spectrum is obtained by performing a Fourier transform on the first time-domain signal. The second-order spectrum is obtained by performing a Fourier transform on the second time-domain signal.

[0076] The technical solution provided in this disclosure involves performing Fourier transform processing on the first time-domain signal and the second time-domain signal respectively to obtain a first-order spectrum and a second-order spectrum. The method is simple and easy to implement.

[0077] Figure 3 Another gear fault detection method provided in this disclosure embodiment, such as Figure 3 As shown, the method includes the following steps:

[0078] S110. Acquire the first vibration signal during the clockwise rotation of the gear under test and the meshing process between the gear under test and the standard gear.

[0079] S120. Acquire the second vibration signal during the counterclockwise rotation of the gear under test and the meshing process between the gear under test and the standard gear.

[0080] S130. Perform shaft separation signal processing on the first vibration signal and the second vibration signal respectively to obtain the first time domain signal and the second time domain signal of the rotating shaft where the gear under test is located.

[0081] S151. The first time-domain signal and the second time-domain signal are processed by Fourier transform to obtain the first-order spectrum and the second-order spectrum.

[0082] S161. Based on the first-order spectrum, determine the first vibration noise value during the meshing process between the gear under test and the standard gear.

[0083] S162. Based on the second-order spectrum, determine the second vibration noise value during the meshing process between the gear under test and the standard gear.

[0084] S163. When the first vibration noise value is greater than the first preset noise threshold and / or the second vibration noise value is greater than the second preset noise threshold, the fault type of the gear under test is determined to be at least one of the following: gear parameter deviation fault, tooth surface concavity and radial runout error fault, and regular pitch deviation fault.

[0085] The first vibration noise value and the second vibration noise value both include the values ​​of the main frequency, harmonic frequency and fractional frequency order during the meshing process between the gear under test and the standard gear.

[0086] The technical solution provided in this disclosure determines the first vibration noise value during the meshing process between the tested gear and the standard gear based on the first-order spectrum. Based on the second-order spectrum, it determines...

[0087] The second vibration noise value during the meshing process of the gear under test and the standard gear is determined. The vibration noise value during the meshing process of the gear under test and the standard gear, thus determined by the order spectrum, is compared with the first vibration noise value and a first preset noise threshold, and / or the second vibration noise value.

[0088] The relationship between the vibration noise value and the second preset noise threshold is defined as follows: when the first vibration noise value is greater than the first preset noise threshold, and / or the second vibration noise value is greater than the second preset noise threshold,

[0089] The fault type of the gear under test is determined to be at least one of the following: gear parameter deviation fault, tooth surface concavity and radial runout error, or regular pitch deviation fault. This allows for accurate identification of the fault type of the gear under test; the method is simple and easy to implement. For example, by adjusting the main frequency...

[0090] Analyzing the order values ​​can determine if there are significant deviations in gear parameters. 5. By analyzing the values ​​of the harmonic order, faults such as tooth surface concavity and radial runout exceeding tolerances can be identified.

[0091] By analyzing the numerical values ​​of the fractional frequency order, it can be determined whether there is a regular pitch deviation fault in the gear.

[0092] Figure 4 Another gear fault detection method provided in this disclosure embodiment, such as Figure 4 Place

[0093] The method includes the following steps:

[0094] 0S110. During the clockwise rotation of the gear under test, the meshing between the gear under test and the standard gear is measured.

[0095] The first vibration signal during the bonding process.

[0096] S120. Acquire the second vibration signal during the counterclockwise rotation of the gear under test and the meshing process between the gear under test and the standard gear.

[0097] S130. The first vibration signal and the second vibration signal are processed by shaft separation signal processing to obtain the first time domain signal and the second time domain signal of the rotating shaft where the gear under test is located.

[0098] S151. The first time-domain signal and the second time-domain signal are processed by Fourier transform to obtain the first-order spectrum and the second-order spectrum.

[0099] S164. When at least some order data in the first order spectrum is greater than the order data in the first preset curve, and / or at least some order data in the second order spectrum is greater than the order data in the second preset curve, the fault type of the gear under test is determined to be a ripple fault and / or a rust spot fault.

[0100] The technical solution provided in this disclosure compares the matching relationship between the first-order spectrum and the first preset curve, and / or the matching relationship between the second-order spectrum and the second preset curve.

[0101] According to the matching relationship, when at least some order data in the first order spectrum is greater than the order data in the first preset curve, and / or when at least some order data in the second order spectrum is greater than the order data in the second preset curve, the fault type of the gear under test is determined to be a ripple fault and / or a rust fault.

[0102] This method can accurately diagnose the faults of the gear under test; it is simple and easy to implement.

[0103] In some embodiments, the gear fault detection method further includes, for example, identifying whether the mating dimensions such as bearing holes are within acceptable limits from the incoming inspection report of the gear under test, to confirm whether the support of the gear under test is abnormal. It also includes identifying whether the span and radial runout are within acceptable limits, to confirm that the clearance of the gear pair under test is normal and that there are no clamping abnormalities during the gear machining process.

[0104] 5. In some embodiments, the gear fault detection method further includes, for example, if the gear under test...

[0105] When visual abnormalities are found, the crest value, kurtosis value, and noise curve value of the gear under test are obtained. These values ​​are used to determine if the gear is abnormal. Visual abnormalities include tooth surface corrosion, tooth tip chipping, substandard chamfering, and incomplete root cleaning. For example, a dual-meshing method can be used to detect the crest value, kurtosis value, and noise curve value of the gear under test. If the tooth profile and tooth direction report shows discrepancies in tooth profile parameters...

[0106] In cases where the values ​​are not specified, such as fko, fha, ffa, fhβ, fp, etc., a single-meshing device is needed to detect whether the meshing peak value, frequency, and octave value of the gear under test are lower than the standard value.

[0107] Corresponding to the gear fault detection method provided in the embodiments of this disclosure, the embodiments of this disclosure also include

[0108] A gear fault detection device is provided. Figure 5 This is a structural block diagram of a gear 5 fault detection device provided in an embodiment of the present disclosure, as shown below. Figure 5 As shown, the gear fault detection device includes a vibration...

[0109] The system includes a motion signal acquisition module 10, a time-domain signal determination module 20, and a fault type determination module 30.

[0110] The vibration signal acquisition module 10 is used to acquire the first vibration signal during the clockwise rotation of the gear under test and its meshing with the standard gear, and the second vibration signal during the counterclockwise rotation of the gear under test and its meshing with the standard gear. The time-domain signal determination module 20 is used to perform shaft separation signal processing on the first and second vibration signals to obtain the first and second time-domain signals of the rotating shaft where the gear under test is located. The fault type determination module 30 is used to determine, based on the first and / or second time-domain signals, that the edge of the gear under test has dents or scratches.

[0111] The gear fault detection device disclosed in the above embodiments can perform the gear fault detection methods disclosed in the above embodiments and has the same or corresponding beneficial effects. To avoid repetition, it will not be described again here.

[0112] This disclosure also provides a computer-readable storage medium that stores a program or instructions that cause a computer to perform the steps of any of the above methods.

[0113] Optionally, when executed by a computer processor, the computer-executable instructions can also be used to execute the technical solutions of any of the gear fault detection methods provided in the embodiments of this disclosure, thereby achieving the corresponding beneficial effects.

[0114] Based on the above description of the implementation methods, those skilled in the art can clearly understand that the embodiments of this disclosure can be implemented using software and necessary general-purpose hardware, and of course, they can also be implemented using hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solutions of the embodiments of this disclosure, in essence, or the parts that contribute to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments of this disclosure.

[0115] This disclosure also provides an electronic device, including: one or more processors; a memory for storing one or more programs or instructions; the processors execute the steps of any of the above methods by calling the programs or instructions stored in the memory, thereby achieving the corresponding beneficial effects.

[0116] Figure 6 This is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of this disclosure. For example... Figure 6 As shown, the electronic device includes one or more processors 301 and memory 302.

[0117] The processor 301 may be a central processing unit (CPU) or other form of processing unit with data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device to perform desired functions.

[0118] The memory 302 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory. The non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 301 may execute the program instructions to implement the gear fault detection method of the embodiments of this disclosure described above, and / or other desired functions. Various contents, such as a first vibration signal and a second vibration signal, may also be stored in the computer-readable storage medium.

[0119] In one example, the electronic device may also include an input device 303 and an output device 304, which are interconnected via a bus system and / or other forms of connection mechanism (not shown).

[0120] The output device 304 can output various information to the outside, including information such as the determination that the edge of the gear under test has been damaged. The output device 304 may include, for example, a display, a speaker, a printer, and a communication network and its connected remote output devices, etc.

[0121] Of course, for the sake of simplicity, Figure 6 Only some of the components of the electronic device relevant to this disclosure are shown, omitting components such as buses, input / output interfaces, etc. In addition, the electronic device may include any other suitable components depending on the specific application.

[0122] This disclosure also provides a gear fault detection system, including a vibration signal sensor and a controller. The vibration signal sensor is used to detect vibration signals during the meshing process between a standard gear and the gear under test. The controller is used to execute the steps of the gear fault detection method provided in this disclosure.

[0123] In some embodiments, the gear fault detection system includes a slide, a standard gear, and a vibration signal sensor. The standard gear and the vibration signal sensor are respectively fixedly mounted on the slide. The vibration signal sensor is used to detect the vibration signal during the meshing process between the standard gear (located in the radial direction of the standard gear) and the gear under test.

[0124] In some embodiments, the vibration signal sensor may be, for example, a vibration acceleration sensor.

[0125] It is a unidirectional vibration acceleration sensor, with its direction being the radial direction of the standard gear. The installation height of the vibration acceleration sensor is related to the meshing center height of the standard gear and the gear under test.

[0126] The proximity sensor is used to collect the meshing vibration acceleration signals of the gear under test and a standard gear. After excluding the factors of the gear's own support structure, the main source of gear meshing noise is the radial vibration of the gear pair. Therefore, only a single-direction vibration acceleration sensor is needed, which is relatively inexpensive.

[0127] The technical solutions provided in the embodiments of this disclosure can detect faults that are difficult to identify in ordinary double-grip teeth, such as slight impacts on the tooth tip, scratches on the tooth surface, and slight edge turning of the tooth surface caused by impacts before tooth grinding. The structure is simple and easy to implement.

[0128] It should be noted that in this article, terms such as "first" and "second" are used interchangeably.

[0129] The term "relationship" is used merely to distinguish one entity or operation from another, and does not necessarily require or imply any such actual relationship between these entities or operations.

[0130] Or in order. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or...

[0131] This also includes elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, elements defined by the phrase "including a..." do not exclude...

[0132] Other identical elements may also be present in the process, method, article, or apparatus that includes the aforementioned element.

[0133] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand...

[0134] This disclosure may be used to solve or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be applied without departing from the spirit of this disclosure.

[0135] In cases of spiritual or territorial limitations, implementation may be found in other embodiments. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gear fault detection method characterized by, include: Acquire the first vibration signal during the clockwise rotation of the gear under test and the meshing process between the gear under test and the standard gear; Acquire the second vibration signal during the counterclockwise rotation of the gear under test and the meshing process between the gear under test and the standard gear; The first vibration signal and the second vibration signal are respectively processed by shaft separation signal processing to obtain the first time domain signal and the second time domain signal of the rotating shaft where the gear under test is located; Based on the first time domain signal and / or the second time domain signal, it is determined that the edge of the gear under test has dents or scratches. The method further includes: Based on the first time-domain signal and the second time-domain signal, determine the first-order spectrum corresponding to the first time-domain signal and the second-order spectrum corresponding to the second time-domain signal; Based on the first-order spectrum and / or the second-order spectrum, the fault type of the gear under test is determined; The step of determining the fault type of the gear under test based on the first-order spectrum and / or the second-order spectrum includes: Based on the first order spectrum, the first vibration noise value during the meshing process between the gear under test and the standard gear is determined; Based on the second-order spectrum, the second vibration noise value during the meshing process between the gear under test and the standard gear is determined; When the first vibration noise value is greater than the first preset noise threshold, and / or the second vibration noise value is greater than the second preset noise threshold, the fault type of the gear under test is determined to be at least one of the following: gear parameter deviation fault, tooth surface concavity and radial runout error fault, and regular pitch deviation fault.

2. The gear fault detection method according to claim 1, characterized in that, The step of determining that the edge of the gear under test has dents or scratches based on the first time-domain signal and / or the second time-domain signal includes: Obtain the peak value and / or root mean square value of the first time-domain signal, and the peak value and / or root mean square value of the second time-domain signal; When the peak value and / or root mean square value of the first time domain signal are greater than the first preset signal threshold, and / or the peak value and / or root mean square value of the second time domain signal are greater than the second preset signal threshold, it is determined that the edge of the gear under test has dents or scratches.

3. The gear fault detection method according to claim 1, characterized in that, The step of determining the first-order spectrum corresponding to the first time-domain signal and the second-order spectrum corresponding to the second time-domain signal based on the first time-domain signal and the second time-domain signal includes: The first time-domain signal and the second time-domain signal are respectively subjected to Fourier transform processing to obtain the first-order spectrum and the second-order spectrum.

4. The gear fault detection method according to claim 1, characterized in that, Both the first vibration noise value and the second vibration noise value include the values ​​of the main frequency, harmonic frequency, and fractional frequency order during the meshing process between the gear under test and the standard gear.

5. The gear fault detection method according to claim 1, characterized in that, The step of determining the fault type of the gear under test based on the first-order spectrum and / or the second-order spectrum includes: When at least some order data in the first order spectrum is greater than the order data in the first preset curve, and / or at least some order data in the second order spectrum is greater than the order data in the second preset curve, the fault type of the gear under test is determined to be a ripple fault and / or a rust spot fault.

6. A gear fault detection device, characterized in that, include: The vibration signal acquisition module is used to acquire the first vibration signal during the clockwise rotation of the gear under test and the meshing process between the gear under test and the standard gear. And to acquire the second vibration signal during the counterclockwise rotation of the gear under test and the meshing process between the gear under test and the standard gear; The time-domain signal determination module is used to perform shaft separation signal processing on the first vibration signal and the second vibration signal respectively to obtain the first time-domain signal and the second time-domain signal of the rotating shaft where the gear under test is located; The fault type determination module is used to determine, based on the first time domain signal and / or the second time domain signal, that the edge of the gear under test has dents or scratches. Based on the first time-domain signal and the second time-domain signal, determine the first-order spectrum corresponding to the first time-domain signal and the second-order spectrum corresponding to the second time-domain signal; Based on the first-order spectrum and / or the second-order spectrum, the fault type of the gear under test is determined; The step of determining the fault type of the gear under test based on the first-order spectrum and / or the second-order spectrum includes: Based on the first order spectrum, the first vibration noise value during the meshing process between the gear under test and the standard gear is determined; Based on the second-order spectrum, the second vibration noise value during the meshing process between the gear under test and the standard gear is determined; When the first vibration noise value is greater than the first preset noise threshold, and / or the second vibration noise value is greater than the second preset noise threshold, the fault type of the gear under test is determined to be at least one of the following: gear parameter deviation fault, tooth surface concavity and radial runout error fault, and regular pitch deviation fault.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a program or instructions that cause a computer to perform the steps of the gear fault detection method as described in any one of claims 1 to 5.

8. An electronic device, characterized in that, include: One or more processors; Memory, used to store one or more programs or instructions; The processor executes the steps of the method as described in any one of claims 1 to 5 by invoking programs or instructions stored in the memory.

9. A gear fault detection system, characterized in that, Includes vibration signal sensors and controllers; The vibration signal sensor is used to detect vibration signals during the meshing process between the standard gear and the gear under test; The controller is used to perform the steps of the gear fault detection method as described in any one of claims 1-5.

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