A wheel hub bearing vibration detection method and device

Abstract

The present application relates to the technical field of hub bearing, in particular to a kind of hub bearing vibration detection method and device.Method comprising the positioning of inner ring flange of hub bearing, to make inner ring flange and rotating assembly be mutually fixed;Based on inner ring flange positioning completion, control compression assembly to the outer ring unit of hub bearing First pressure is exerted, to carry out positioning to outer ring unit;Again, detection component is positioned, to make first detection head abut first circumferential surface of outer ring unit, second detection head abut second circumferential surface of outer ring unit;Based on detection component positioning completion, control rotating assembly drives inner ring flange to rotate;Based on inner ring flange rotates to preset time length, control inner ring flange stops rotating;Based on inner ring flange stops rotating, obtain the first detection data of first detection head and the second detection data of second detection head.Such that it has solved the problem that the channel defect detection result of hub bearing is inaccurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hub bearing, in particular to a hub bearing vibration detection method and device. BACKGROUND

[0002] As a key component of vehicle transmission system, the hub bearing is mainly composed of an inner ring unit, an outer ring unit and a rolling unit. After the inner ring unit and the outer ring unit are assembled, two channels are formed between them, and the rolling unit is located in the channel. The relative rotation of the inner ring unit and the outer ring unit is realized by the rolling of the rolling unit in the channel, thereby ensuring the power transmission and steering function during vehicle driving. In order to ensure the safe use performance of the hub bearing after leaving the factory, the defects of the channel need to be strictly tested.

[0003] In the existing channel defect detection process of the hub bearing, in order to avoid damage to the hub bearing caused by the detection device, a rubber pad is usually placed on the upper end face of the hub bearing. However, due to the material properties and structural characteristics of the rubber pad, the rubber pad will absorb the axial vibration generated by the hub bearing during detection, so that the vibration signal collected by the detection equipment cannot truly reflect the actual vibration state of the hub bearing, thereby causing inaccurate measurement results. SUMMARY

[0004] In order to solve the problem of inaccurate detection results of the channel defects of the hub bearing, the present application provides a hub bearing vibration detection method and device.

[0005] In the first aspect, the present application provides a hub bearing vibration detection method, which comprises:

[0006] Positioning the inner ring flange of the hub bearing to fix the inner ring flange and the rotating assembly to each other;

[0007] Based on the positioning of the inner ring flange, controlling the pressing assembly to exert a first pressure on the outer ring unit of the hub bearing to position the outer ring unit; wherein the first pressure is directed to the flange plate of the inner ring flange; the pressing assembly comprises a pressure head and a pad; the pad is connected with the pressure head; the material of the pad is brass; under the state that the pressing assembly exerts the first pressure on the outer ring unit, the pad abuts against the outer ring unit;

[0008] Based on the positioning of the outer ring unit, positioning the detection assembly to make the first detection head abut against the first circumferential surface of the outer ring unit and the second detection head abut against the second circumferential surface of the outer ring unit; wherein the first circumferential surface is an assembly surface; the second circumferential surface is a blank surface;

[0009] Once the detection component completes its positioning, the rotating component is controlled to rotate the inner flange.

[0010] Based on the preset time duration of the inner ring flange rotation, the inner ring flange is controlled to stop rotating;

[0011] Based on the fact that the inner flange has stopped rotating, the first detection data of the first detection head and the second detection data of the second detection head are obtained.

[0012] In some embodiments, the wheel hub bearing vibration detection method further includes:

[0013] Based on the completion of acquiring the first and second detection data, the difference between the peak counts of the first and second detection data is determined.

[0014] If the difference exceeds a preset difference, then the groove of the wheel hub bearing has a defect.

[0015] In some embodiments, in the step of controlling the clamping assembly to apply a first pressure to the outer ring unit of the wheel hub bearing to position the outer ring unit based on the positioning of the inner ring flange, the first pressure is an initial pressure value;

[0016] The method for detecting wheel hub bearing vibration also includes:

[0017] Based on the fact that the difference in the number of peak values ​​is less than the preset difference, the first pressure is reduced;

[0018] Based on the completion of the first pressure adjustment, the rotating component is controlled to drive the inner flange to rotate;

[0019] Since the inner flange is in a rotating state, the process returns to the step of controlling the inner flange to stop rotating after rotating for a preset time, until the first pressure is less than the preset pressure value, and the cycle ends; wherein, the preset pressure value is less than the initial pressure value.

[0020] In some embodiments, two first detection heads are provided; when the detection component is positioned, the two first detection heads are arranged at intervals along the circumferential direction of the first circumferential surface.

[0021] In some embodiments, one second detection head is provided; when the detection component is positioned, the vertical projection of the second detection head is located between the vertical projections of the two first detection heads.

[0022] In some embodiments, the first detection head and the second detection head correspond one-to-one; when the detection component is positioned, the second detection head is located directly below the first detection head.

[0023] The second invention provides a wheel hub bearing vibration detection device, applied to the wheel hub bearing vibration detection method described in any one of the first aspects, wherein the wheel hub bearing vibration detection device comprises:

[0024] A clamping assembly includes a pressure head, a pad, and a first driving part; the first driving part is connected to the pressure head; the first driving part drives the pressure head to move up and down; the pad is connected to the pressure head; the pad protrudes from the bottom of the pressure head; the pad is made of brass.

[0025] A rotating assembly includes a rotating base and a second driving unit; the second driving unit is connected to the rotating base; the second driving unit drives the rotating base to rotate; a positioning groove for the inner ring flange of a positioning hub bearing is provided on the rotating base; the pressure head is located vertically above the rotating base.

[0026] The detection component includes a first detection head, a second detection head, and a processor; the first detection head and the second detection head are electrically connected to the processor, respectively.

[0027] In some embodiments, the lower surface of the pressure head is provided with an annular receiving groove and a clearance groove; the pad is embedded in the receiving groove; the lower surface of the pad protrudes from the receiving groove; the clearance groove is used to avoid the end of the inner ring flange of the wheel hub bearing away from the flange.

[0028] In some embodiments, the bottom of the pressure head is provided with an installation channel; the installation channel extends horizontally; the installation channel communicates with the clearance groove; and the first detection head passes through the installation channel.

[0029] In some embodiments, three installation channels are provided; one of the installation channels is blocked by a pad; two first detection heads are provided; each first detection head corresponds to one of the installation channels.

[0030] To address the problem of inaccurate detection results for raceway defects in wheel hub bearings, this invention offers the following advantages:

[0031] By positioning the inner ring flange of the wheel hub bearing, the inner ring flange and the rotating assembly are fixed together. The clamping assembly applies a first pressure, pointing towards the flange of the inner ring flange, to the outer ring unit of the wheel hub bearing. The pad in the clamping assembly that abuts against the outer ring unit is made of brass, which prevents damage to the outer ring unit. Furthermore, brass has moderate hardness and does not easily absorb axial vibrations of the outer ring unit. Simultaneously, the first detection head of the detection assembly abuts against the first circumferential surface (assembly surface) of the outer ring unit, and the second detection head abuts against the second circumferential surface (raw surface) of the outer ring unit. The first detection head is close to the inner raceway, primarily detecting defects in the inner raceway. The second detection head is close to both the outer and inner raceways, mainly used to supplement the detection of defects in the outer raceway. This allows for the simultaneous acquisition of defect detection results from both the inner and outer raceways, improving the accuracy of product inspection. Simultaneously, when the outer ring unit vibrates axially, the second detection head can be made to jump through the second circumferential surface of the blank surface. This allows the axial vibration to be detected using the second detection head that abuts against the blank surface, thus achieving comprehensive detection of the wheel hub bearing's vibration status. This solves the problems of inaccurate measurements due to the shim absorbing axial vibration and neglecting the influence of axial vibration on radial detection. Attached Figure Description

[0032] Figure 1 A flowchart illustrating one embodiment of a wheel hub bearing vibration detection method is shown.

[0033] Figure 2 A schematic diagram of the structure of a wheel hub bearing vibration detection device according to one embodiment is shown;

[0034] Figure 3 It shows Figure 2 A schematic diagram of the clamping component.

[0035] Reference numerals: Hub bearing 10; Outer ring unit 11; Outer ring body 111; Mounting lug 112; Threaded hole 113; First circumferential surface 114; Second circumferential surface 115; Inner ring flange 12; Inner ring body 121; Flange 122; Mating inner ring 123; Rolling unit 13; Pressing assembly 20; Press head 21; Receiving groove 22; Clearance groove 23; Mounting channel 24; Rotating assembly 30; Rotating base 31; Positioning groove 32; Detection assembly 40; First detection head 41; Second detection head 42. Detailed Implementation

[0036] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the disclosure.

[0037] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the terms "installed", "set up", "equipped with", "connected", and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0038] As a key component of the vehicle's transmission system, the wheel hub bearing 10 consists of an inner ring unit, an outer ring unit 11, and a rolling unit 13. After assembly, the inner ring unit and outer ring unit 11 form two raceways, within which the rolling unit 13 is located. Relative rotation between the two is achieved through rolling, ensuring the vehicle's power transmission and steering functions. However, to ensure the safe use of the wheel hub bearing 10 after it leaves the factory, rigorous testing for raceway defects is necessary.

[0039] In existing wheel hub bearing 10 groove defect detection, a rubber pad is usually placed on its upper end face to avoid damage to the wheel hub bearing 10 by the device. However, due to its own material and structural characteristics, the rubber pad absorbs axial vibration during the detection, causing the vibration signal collected by the equipment to fail to accurately reflect the actual condition, resulting in inaccurate measurement results.

[0040] Example 1:

[0041] To address the aforementioned problems, this embodiment provides a vibration detection method for a wheel hub bearing 10. For example... Figure 2 , Figure 3 As shown, the device involved in the vibration detection method of the wheel hub bearing 10 in this embodiment includes a clamping assembly 20, a rotating assembly 30, and a detection assembly 40.

[0042] The clamping assembly 20 includes a pressure head 21, a pad, and a first drive unit. The first drive unit connects to the pressure head 21 and drives its lifting and lowering to flexibly adjust its position to adapt to the testing of different specifications of wheel hub bearings 10. The pad is connected to the pressure head 21 and protrudes at the bottom. The brass pad ensures precise contact with the outer ring unit 11 and transmits pressure, preventing damage to the outer ring unit 11 due to excessive pressure. It also reduces the absorption of axial vibration, making the vibration signal more realistic. The rotating assembly 30 includes a rotating base 31 and a second drive unit. The second drive unit connects to the rotating base 31 and drives its rotation, causing the inner ring flange 12 to simulate actual rotation. The rotating base 31 has a positioning groove 32 for positioning the inner ring flange 12, which can prevent it from shifting during testing rotation and causing inaccurate results. The pressure head 21 is located directly above the rotating base 31 and can apply pressure directly after the outer ring unit 11 is positioned, ensuring accurate clamping. The detection component 40 includes a first detection head 41, a second detection head 42, and a processor. The first detection head 41 and the second detection head 42 can transmit the collected vibration data in a timely manner for the processor to process and analyze, thereby achieving rapid processing and evaluation and improving detection efficiency and data processing accuracy.

[0043] In this embodiment, because the outer ring unit 11 of the wheel bearing requires the machining of two grooves on its inner circumferential surface, machining these grooves on the outer ring unit 11 is difficult due to the machining on the inner circumferential surface. Therefore, the wheel bearing 10 needs to be inspected to prevent vibration between the outer ring unit 11 and the inner ring flange 12 during relative movement after the wheel bearing 10 is put into use, which could easily lead to damage to the wheel bearing 10. Figure 1 As shown, this embodiment provides a vibration detection method for a wheel hub bearing 10, including steps S10 to S60. Steps S10 to S60 will be described in detail below:

[0044] Step S10: Before testing the wheel hub bearing 10, the inner ring flange 12 of the wheel hub bearing 10 needs to be positioned so that the inner ring flange 12 and the rotating component 30 are fixed to each other. This provides a basis for the stable rotation of the inner ring flange 12 during subsequent testing, ensures that the rotation action can be accurately transmitted, and avoids the impact of the relative displacement between the inner ring flange 12 and the rotating component 30 on the testing stability.

[0045] In step S20, based on the positioning of the inner ring flange 12, the clamping assembly 20 applies a first pressure to the outer ring unit 11 of the wheel hub bearing 10 to achieve stable positioning of the outer ring unit 11 and prevent displacement of the outer ring unit 11 during the testing process. The first pressure is directed towards the flange 122 of the inner ring flange 12. The clamping assembly 20 includes a pressure head 21 and a pad, with the pad connected to the pressure head 21. The pad is made of brass. When the clamping assembly 20 applies the first pressure to the outer ring unit 11, the pad abuts against the outer ring unit 11. The properties of brass make it difficult to absorb axial vibrations of the wheel hub bearing 10 when the clamping assembly 20 applies pressure, thus ensuring effective detection of axial vibrations and the validity of the test data. Simultaneously, the moderate hardness of brass prevents damage to the outer ring unit 11 when the clamping assembly applies pressure.

[0046] The raceway closest to flange 122 is the outer raceway, typically located on the exterior of the vehicle and connected to the wheel hub. The raceway furthest from flange 122 is the inner raceway, connected to the interior of the vehicle. Currently, when inspecting the wheel hub bearing 10, the inner raceway near the first circumferential surface 114 is farther from the upper end of the outer ring unit 11, while the raceway furthest from the first circumferential surface 114 is closer to the lower end of the outer ring unit 11. Therefore, the raceway near the first circumferential surface 114 is more difficult to machine. Currently, it is generally assumed that the outer raceway furthest from the first circumferential surface 114 is free of defects. Furthermore, the first circumferential surface 114 is a smooth assembly surface. Therefore, currently, both the first inspection head 41 and the second inspection head 42 are typically placed against the first circumferential surface 114 to inspect the wheel hub bearing 10. However, after being put into use, the inventors of this application found that a small number of wheel hub bearings 10 still failed to meet standards. Therefore, step S30 is adopted to resolve the issue of defective wheel hub bearings 10.

[0047] Step S30: Based on the positioning of the outer ring unit 11, the detection component 40 is positioned so that the first detection head 41 abuts against the first circumferential surface 114 of the outer ring unit 11, and the second detection head 42 abuts against the second circumferential surface 115 of the outer ring unit 11. The first circumferential surface 114 is the assembly surface, and the second circumferential surface 115 is the blank surface. The radial vibration of the inner raceway of the wheel hub bearing 10 is detected by the first detection head 41 abutting against the assembly surface. Simultaneously, the second detection head 42 abuts against the blank surface. The second detection head 42 is located in a region with higher roughness on the second circumferential surface 115, mainly used to supplement the detection of defects in the outer raceway. When the wheel hub bearing 10 experiences axial vibration, the second detection head 42 collides with the higher roughness protrusions on the second circumferential surface 115, thereby detecting both the axial and radial vibrations of the wheel hub bearing 10. In this way, by using the first detection head 41 and the second detection head 42, the vibration of the outer ring unit 11 at different positions can be collected simultaneously, realizing the simultaneous detection of radial vibration and axial vibration, thereby achieving comprehensive detection of the vibration state of the wheel hub bearing 10.

[0048] In step S40, based on the positioning of the detection component 40, the rotating component 30 is controlled to drive the inner ring flange 12 to rotate, while the outer ring unit 11 remains stationary. This rotation of the inner ring flange 12 by the rotating component 30 simulates the rotational state of the wheel hub bearing 10 in actual operation, making the detection environment closer to real working conditions and providing conditions for obtaining accurate vibration data.

[0049] In step S50, based on the inner ring flange 12 rotating for a preset time, the inner ring flange 12 is controlled to stop rotating. This ensures that the inspection process of the hub bearing 10 covers a sufficient rotation cycle, guaranteeing the integrity of the inspection.

[0050] In step S60, based on the fact that the inner ring flange 12 has stopped rotating, the first detection data of the first detection head 41 and the second detection data of the second detection head 42 are obtained to provide an important basis for judging whether the hub bearing 10 meets the quality standards, thereby improving the reliability of the detection results.

[0051] In some embodiments, the vibration detection method for the wheel hub bearing 10 further includes steps S70 and S80, wherein the vibration detection method for the wheel hub bearing 10 is performed sequentially through steps S10, S20, S30, S40, S50, S60, S70, and S80. Steps S70 and S80 will be described in detail below:

[0052] Step S70: Based on the acquisition of the first and second detection data, determine the difference in the number of peak values ​​between the first and second detection data. Due to the influence of axial vibration, the number of peak values ​​detected on the second circumferential surface 115 is greater when defects exist in the groove. Therefore, a preset difference is set to determine whether there is a defect in the wheel hub bearing 10. The preset difference is obtained through empirical values.

[0053] Step S80: If the difference exceeds a preset difference value, then the groove of the wheel hub bearing 10 has a defect. By determining the difference between the peak values ​​of the first and second detection data, and determining that the groove of the wheel hub bearing 10 has a defect when the difference exceeds a preset difference value, the difference between the first and second detection data can be compared to effectively identify groove defects, thereby quickly determining whether the wheel hub bearing 10 has a quality problem and improving the targeting and accuracy of the detection.

[0054] Furthermore, in the step of positioning the outer ring unit 11 of the wheel hub bearing 10 by controlling the clamping assembly 20 to apply a first pressure to the outer ring unit 11 of the wheel hub bearing 10 after the inner ring flange 12 is positioned, the first pressure is the initial pressure value.

[0055] The vibration detection method for the wheel hub bearing 10 also includes step S90, which comprises steps S91 to S93. The vibration detection method for the wheel hub bearing 10 executes steps S10, S20, S30, S40, S50, S60, S70, S80, S91, S92, and S93 sequentially. Steps S91 to S93 will be described in detail below:

[0056] Step S91: Based on the fact that the difference in the number of peak values ​​is less than the preset difference, the first pressure is reduced to avoid the first pressure being too high, which would lead to inaccurate detection results of the axial vibration of the wheel hub bearing 10.

[0057] In step S92, based on the completion of the first pressure adjustment, the rotating component 30 is controlled to drive the inner ring flange 12 to rotate. After reducing the first pressure, the hub bearing 10 is tested again to simulate the actual working condition and ensure the effectiveness and accuracy of the test.

[0058] Step S93: Since the inner ring flange 12 is in a rotating state, return to the step of controlling the inner ring flange 12 to stop rotating after rotating for a preset time, until the first pressure is less than the preset pressure value, and end the cycle. The preset pressure value is less than the initial pressure value. By cyclically executing the rotation, stop, and data acquisition steps until the first pressure is lower than the preset pressure value, vibration data can be collected under various pressure conditions, comprehensively analyzing the impact of different pressures on the vibration of the wheel hub bearing 10, and improving the comprehensiveness and accuracy of the test results.

[0059] Furthermore, two first detection heads 41 are provided. When the detection component 40 is positioned, the two first detection heads 41 are arranged at intervals along the circumferential direction of the first circumferential surface 114, which can collect vibration data of the wheel hub bearing 10 from different positions of the first circumferential surface 114, improve the comprehensiveness and accuracy of vibration detection of the assembly surface, avoid local data deviation caused by a single detection point, and thus more accurately reflect the vibration of the assembly surface of the wheel hub bearing 10.

[0060] Furthermore, a second detection head 42 is provided. With the detection assembly 40 positioned, the vertical projection of the second detection head 42 lies between the vertical projections of the two first detection heads 41. This allows the vibration data of the blank surface collected by the second detection head 42 to complement the vibration data of the assembly surface collected by the first detection head 41 in spatial position, facilitating a more comprehensive analysis of the vibration correlation characteristics of different circumferential surfaces of the wheel hub bearing 10, increasing the accuracy of the axial vibration data of the wheel hub bearing 10, and thus improving the reliability of the overall performance evaluation of the wheel hub bearing 10.

[0061] Furthermore, the first detection head 41 and the second detection head 42 are in a one-to-one correspondence. With the detection assembly 40 positioned, the second detection head 42 is directly below the first detection head 41. By ensuring a one-to-one correspondence between the first detection head 41 and the second detection head 42, and with the second detection head 42 directly below the first detection head 41, a vertical correspondence is established between the two. This facilitates the simultaneous detection of axial and radial vibration data of the assembly surface and the blank surface in the same vertical region, reducing data deviations caused by spatial differences. This improves the accuracy of vibration data correlation analysis and provides a more reliable basis for judging the performance of the wheel hub bearing 10.

[0062] Example 2:

[0063] In this embodiment, as Figure 2 , Figure 3 As shown, this application provides a vibration detection device for a wheel hub bearing 10, which is applied to the vibration detection method for a wheel hub bearing 10 as described in any one of the embodiments. The vibration detection device for a wheel hub bearing 10 includes a clamping assembly 20, a rotating assembly 30, and a detection assembly 40.

[0064] The clamping assembly 20 includes a pressure head 21, a pad, and a first drive unit. The first drive unit is connected to the pressure head 21. By driving the pressure head 21 to rise and fall, the position of the clamping assembly 20 can be flexibly adjusted to meet the testing requirements of different specifications of wheel hub bearings 10. The pad is connected to the pressure head 21 and protrudes from the bottom of the pressure head 21. The pad is made of brass. The pad ensures precise contact with the outer ring unit 11, ensuring effective pressure transmission, while also ensuring that the outer ring unit 11 is not damaged due to excessive pressure. The brass material of the pad reduces the absorption of axial vibration, allowing the vibration signal to be detected more accurately.

[0065] The rotating assembly 30 includes a rotating base 31 and a second drive unit. The second drive unit is connected to the rotating base 31. The second drive unit drives the rotating base 31 to rotate, thereby causing the inner ring flange 12 to simulate the rotation state in actual operation. The rotating base 31 has a positioning groove 32 for positioning the inner ring flange 12 of the hub bearing 10, so that the inner ring flange 12 can be positioned in the positioning groove 32, thereby avoiding the situation where the position of the inner ring flange 12 shifts during detection rotation, resulting in inaccurate detection results. The pressure head 21 is located vertically above the rotating base 31, so that after the outer ring unit 11 of the hub bearing 10 is positioned, the pressure head 21 can directly apply pressure to the lower outer ring unit 11, ensuring the accuracy of the clamping action.

[0066] The detection component 40 includes a first detection head 41, a second detection head 42, and a processor. The first detection head 41 and the second detection head 42 are electrically connected to the processor. This allows the collected vibration data to be transmitted to the processor for processing and analysis in a timely manner, enabling rapid processing and evaluation of the vibration data, and improving detection efficiency and data processing accuracy.

[0067] Furthermore, such as Figure 3 As shown, by providing an annular receiving groove 22 and a clearance groove 23 on the lower surface of the pressure head 21, the pad is embedded in the receiving groove 22, thereby achieving a stable connection between the pad and the pressure head 21, preventing the pad from sliding out from the side during the test, and ensuring the stability of the test. At the same time, the lower surface of the pad protrudes from the receiving groove 22, so that the lower surface of the pad abuts against the first end face of the outer ring unit 11, avoiding direct contact between the pressure head 21 and the first end face, which could cause sudden pressure changes or excessive pressure on the pressure head 21, resulting in damage to the outer ring unit 11. The clearance groove 23 is used to avoid the end of the inner ring flange 12 of the wheel hub bearing 10 that is away from the flange 122, which can prevent interference between the pressure head 21 and the inner ring flange 12, ensure smooth pressing action, and improve the stability of the test process.

[0068] Furthermore, such as Figure 3 As shown, the bottom of the pressure head 21 has an installation channel 24 that extends horizontally and communicates with the clearance groove 23, providing a stable installation path for the first detection head 41. This allows the first detection head 41 to be accurately inserted into the installation channel 24. The insertion of the first detection head 41 into the installation channel 24 ensures it maintains a stable position during the detection process, facilitating accurate contact with the first circumferential surface 114 of the outer ring unit 11, improving the reliability of the detection data, and preventing positional interference with the pressure head 21 or other components, thus ensuring a smooth detection process.

[0069] Furthermore, such as Figure 3As shown, three installation channels 24 are provided. One of the installation channels 24 is blocked by a shim. Two first detection heads 41 are provided. Each first detection head 41 corresponds to one of the installation channels 24. The three installation channels 24 allow for flexible configuration according to testing needs. For example, the second detection head 42 can be moved into one of the installation channels 24, and the first and second detection heads 41 and 42 can be used to test the wheel hub bearing 10 using the existing method. The data measured in this application can be compared with the data measured in the proposed method, thereby further increasing the accuracy of the vibration test of the wheel hub bearing 10. When the second detection head 42 is located on the second circumferential surface 115, blocking one of the installation channels 24 with a shim prevents impurities from entering the channel and affecting the testing environment. Simultaneously, it ensures that the airflow during the rotation of the inner ring flange 12 does not affect the vibration test of the wheel hub bearing 10. The one-to-one correspondence between the two first detection heads 41 and the installation channels 24 ensures that each first detection head 41 has an independent and stable installation position, maintaining precise positioning during testing and improving the comprehensiveness and accuracy of the vibration test data for the assembly surface.

[0070] In other embodiments, the wheel bearing 10 includes an outer ring unit 11, an inner ring flange 12, and a rolling element 13. The outer ring unit 11 includes an outer ring body 111, a mounting lug 112, a threaded hole 113, a first circumferential surface 114, and a second circumferential surface 115. When the inner ring flange 12 of the wheel bearing 10 is assembled into the positioning groove 32, the first circumferential surface 114 is located above the second circumferential surface 115. The first circumferential surface 114 abuts against a pad. The outer ring body 111 is the main structure of the wheel bearing 10, providing important support for the entire wheel bearing 10, and is adapted to the inner ring unit. The mounting lug 112 is integrally formed with the outer ring body 111. The mounting lug 112 can be adapted to components on the vehicle, thereby providing positioning and connection functions. The threaded hole 113 penetrates the mounting lug 112, so that when the mounting lug 112 is connected to the vehicle, the wheel bearing 10 is fixed and locked by the assembly of bolts with the threaded hole 113. The inner ring unit includes an inner ring body 121, a flange 122, and a mating inner ring 123. When the wheel hub bearing 10 is fixed to the positioning groove 32, the mating inner ring 123 is located within the positioning groove 32, thereby fixing the position of the wheel hub bearing 10. The inner ring body 121 and the outer ring body 111 simultaneously provide support for the entire wheel hub bearing 10. Furthermore, they are compatible; after the wheel hub bearing 10 is positioned in the testing assembly, the rotating base 31 abuts against the lower end face of the flange 122, further increasing the stability of the wheel hub bearing 10 test.

[0071] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes can be made in form and detail without departing from the scope of this disclosure.

Claims

1. A method for detecting vibration in wheel hub bearings, characterized in that, The method for detecting wheel hub bearing vibration includes: Position the inner ring flange of the hub bearing so that the inner ring flange is fixed to the rotating assembly; Based on the completion of the inner ring flange positioning, the control clamping assembly applies a first pressure to the outer ring unit of the wheel hub bearing to position the outer ring unit; wherein, the first pressure is directed towards the flange of the inner ring flange; the clamping assembly includes a pressure head and a pad; the pad is connected to the pressure head; the pad is made of brass; when the clamping assembly applies the first pressure to the outer ring unit, the pad abuts against the outer ring unit; Based on the completion of the outer ring unit positioning, the detection component is positioned so that the first detection head abuts against the first circumferential surface of the outer ring unit, and the second detection head abuts against the second circumferential surface of the outer ring unit; wherein, the first circumferential surface is the assembly surface; and the second circumferential surface is the blank surface; Once the detection component completes its positioning, the rotating component is controlled to rotate the inner flange. Based on the preset time duration of the inner flange rotation, the inner flange is controlled to stop rotating. Based on the fact that the inner flange has stopped rotating, the first detection data of the first detection head and the second detection data of the second detection head are obtained.

2. The method for detecting vibration of a wheel hub bearing according to claim 1, characterized in that, The method for detecting vibration of wheel hub bearings also includes: Based on the completion of acquiring the first and second detection data, the difference between the peak counts of the first and second detection data is determined. If the difference exceeds a preset difference, then the groove of the wheel hub bearing has a defect.

3. The method for detecting vibration of a wheel hub bearing according to claim 2, characterized in that, In the step of controlling the clamping assembly to apply a first pressure to the outer ring unit of the wheel hub bearing to position the outer ring unit after the inner ring flange positioning is completed, the first pressure is an initial pressure value; The method for detecting vibration of wheel hub bearings also includes: Based on the fact that the difference in the number of peak values ​​is less than the preset difference, the first pressure is reduced; Based on the completion of the first pressure adjustment, the rotating component is controlled to drive the inner ring flange to rotate; Since the inner flange is in a rotating state, the process returns to the step of controlling the inner flange to stop rotating after rotating for a preset time, until the first pressure is less than the preset pressure value, and the cycle ends; wherein, the preset pressure value is less than the initial pressure value.

4. The method for detecting vibration of a wheel hub bearing according to claim 1, characterized in that, Two first detection heads are provided; when the detection component is positioned, the two first detection heads are arranged at intervals along the circumferential direction of the first circumferential surface.

5. The method for detecting vibration of a wheel hub bearing according to claim 4, characterized in that, There is one second detection head; when the detection component is positioned, the vertical projection of the second detection head is located between the vertical projections of the two first detection heads.

6. The method for detecting vibration of a wheel hub bearing according to claim 1, characterized in that, The first detection head and the second detection head are in one-to-one correspondence; when the detection component is positioned, the second detection head is located directly below the first detection head.

7. A wheel hub bearing vibration detection device, applied to the wheel hub bearing vibration detection method according to any one of claims 1-6, characterized in that, The wheel hub bearing vibration detection device includes: A clamping assembly includes a pressure head, a pad, and a first driving part; the first driving part is connected to the pressure head; the first driving part drives the pressure head to move up and down; the pad is connected to the pressure head; the pad protrudes from the bottom of the pressure head; the pad is made of brass. A rotating assembly includes a rotating base and a second driving unit; the second driving unit is connected to the rotating base; the second driving unit drives the rotating base to rotate; a positioning groove for the inner ring flange of a positioning hub bearing is provided on the rotating base; the pressure head is located vertically above the rotating base. The detection component includes a first detection head, a second detection head, and a processor; the first detection head and the second detection head are electrically connected to the processor, respectively.

8. The wheel hub bearing vibration detection device according to claim 7, characterized in that, The lower surface of the pressure head is provided with an annular receiving groove and a clearance groove; the pad is embedded in the receiving groove; the lower surface of the pad protrudes from the receiving groove; the clearance groove is used to avoid the end of the inner ring flange of the wheel hub bearing away from the flange.

9. A wheel hub bearing vibration detection device according to claim 8, characterized in that, The bottom of the pressure head has an installation channel; the installation channel extends horizontally; the installation channel is connected to the clearance groove; the first detection head passes through the installation channel.

10. A wheel hub bearing vibration detection device according to claim 9, characterized in that, There are three installation channels; one of the installation channels is blocked by a pad; there are two first detection heads; each first detection head corresponds to one of the installation channels.

Images