CN109724510A - A direct-measuring eddy current on-line detection device for wheel hub bearing axial negative clearance - Google Patents
A direct-measuring eddy current on-line detection device for wheel hub bearing axial negative clearance Download PDFInfo
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- CN109724510A CN109724510A CN201711050763.7A CN201711050763A CN109724510A CN 109724510 A CN109724510 A CN 109724510A CN 201711050763 A CN201711050763 A CN 201711050763A CN 109724510 A CN109724510 A CN 109724510A
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- current vortex
- hub bearing
- mounting platform
- negative clearance
- annulus
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Abstract
The invention discloses a kind of direct measuring type current vortex on-line measuring devices of the axial negative clearance of hub bearing, including current vortex displacement detection device, transition sleeve, pressure sensor.The current vortex displacement detection device includes the pedestal being placed on riveting equipment workbench, pedestal is equipped with installation strut, it installs and current vortex mounting platform is housed on strut, current vortex sensor is housed on current vortex mounting platform, switchable magnetic force adapter assembly is equipped with above current vortex mounting platform, which is placed on the small inner ring of hub bearing.The switchable magnetic force adapter assembly follows the small inner ring of hub bearing that synchronous shift variation occurs at work using magnetic principles, to measure the negative changed play of axial direction of hub bearing, realize the direct measuring type on-line checking of the axial negative clearance of hub bearing, install convenient of the present invention, securely, easy to operate, measurement data is accurate, efficient.
Description
Technical field
The present invention relates to a kind of clearance detectors of hub bearing, and in particular to a kind of axial negative clearance of hub bearing
Direct measuring type current vortex on-line measuring device.
Background technique
It is riveted formula hub bearing and preload is formed by riveted assembly in the axial direction, and then generate negative clearance.It is reasonable negative
Clearance, which is formed by magnitude of interference, to provide pre- allowance for the abrasion in hub bearing use process, and improves hub-bearing unit
Bearing capacity, therefore negative clearance it is reasonable whether be directly related to the working performance and service life of hub bearing.
It is riveted formula hub bearing to assemble using shaft end flange riveted, belongs to irreversible assembly, i.e., negative clearance amount is in hub spindle
Holding is fixed after riveting.Manufacturer, which is directed to, at present is riveted formula hub bearing mainly or using the side detected again after being riveted
Method, to be difficult to accurately control the negative clearance of hub bearing during being riveted.Therefore when end-play is unqualified, product
It can not reprocess, seriously affect the stability of product quality.
Bearing negative gap value is minimum, need to be accurately controlled in 0~-0.04mm range, and by lathe space constraint and its
Vibration influences big.It will thus be seen that not only performance requirement is high but also design difficulty is big for hub bearing on-line measurement device.
Summary of the invention
The purpose of the present invention is to provide a kind of direct measuring type current vortex on-line measuring devices of the axial negative clearance of hub bearing.
To achieve the goals above, the present invention takes following technical scheme:
A kind of direct measuring type current vortex on-line measuring device of the axial negative clearance of hub bearing, including current vortex displacement detection device,
Transition sleeve, pressure sensor.
Current vortex displacement detection device includes the pedestal being placed on riveting equipment workbench, and the pedestal is equipped with installation
Strut is installed with current vortex mounting platform on the installation strut, and current vortex sensor, electricity are housed on the current vortex mounting platform
It is vortexed above mounting platform and is equipped with switchable magnetic force adapter assembly, it is small which is placed on hub bearing
On inner ring.The current vortex sensor is locked on current vortex mounting platform by bolt.
The switchable magnetic force adapter assembly includes the back box made of non-magnet material and small for being bonded hub bearing
Inner ring and be bonded bottom made of permeability magnetic material, back box is equipped with and rotates annulus made of non-magnet material, the rotation
Annulus and back box can mutual circular-rotation, fitting bottom is mounted on the bottom box, and fitting bottom is located under rotation annulus, pressing plate peace
On rotation annulus, Target Board is mounted on pressing plate.The non-magnetic area of circumference uniform distribution in the back box rotates circumference on annulus
Uniformly distributed several magnet.
Sleeve is housed, the sleeve is equipped with the split pin for attaching current vortex mounting platform on the installation strut.
The fitting bottom and Target Board are made of Steel material, and back box, rotation annulus and pressing plate are made of aluminum material.
Using the above scheme, have following advantages:
1. the direct measuring type on-line checking that the device can realize the axial negative clearance of hub bearing；
2. the device uses current vortex sensor, its main feature is that: automatic data collection, measurement accuracy is high, fast response time,
Measurement process is convenient, high reliablity；
3. utilizing a kind of switchable magnetic force adapter assembly, the occasion for being difficult with current vortex sensor originally is become can be with
It is convenient to use；
4. switchable magnetic force adapter assembly is fitted tightly on the small inner ring of hub bearing by the device using magnetic principles,
Realize that switchable magnetic force adapter assembly follows the small inner ring synchronous shift of hub bearing to change at work.
Detailed description of the invention
Accompanying drawing 1 is the structural representation of the present invention；
Attached drawing 2 is schematic rear view of the invention；
Attached drawing 3 is right side view of the invention；
Attached drawing 4 is the structural schematic diagram of hub bearing；
Attached drawing 5 is the structural schematic diagram of switchable magnetic force adapter assembly in the present invention.
Attached drawing 6 is the schematic top plan view of switchable magnetic force adapter assembly in the present invention.
Attached drawing 7 is the schematic diagram of the section structure at the A-A of attached drawing 6.
In figure: 1-workbench, 2-pedestals, 3-sleeves, 4-split pins, 5-installation struts, 6-current vortex sensors,
7-current vortex mounting platforms, 8-transition sleeves, 9-pressure sensors, 10-back box, 11-fitting bottoms, 12-rotation circles
Ring, 13-magnet, 14-pressing plates, 15-Target Boards, 16-non-magnetic areas, 17-switchable magnetic force adapter assemblies, 18-wheel hubs
Bearing, the small inner ring of 19-hub bearings, 20-small inner shafts, 21-riveters, 22-bolts.
Specific embodiment
For the ease of the understanding of those skilled in the art, the present invention will be further explained below with reference to the attached drawings.
As shown in attached drawing 1-7, a kind of direct measuring type current vortex on-line measuring device of the axial negative clearance of hub bearing, including current vortex
Displacement detector, transition sleeve 8, pressure sensor 9.The current vortex displacement detection device includes being mounted on the work of riveting equipment
Make the pedestal 2 on platform 1, is set on the pedestal 2 there are four strut 5 is installed, current vortex mounting platform is housed on the installation strut 5
7, current vortex sensor 6 is housed on the current vortex mounting platform 7, switchable magnetic force is equipped with above current vortex mounting platform 7 and transfers
Component 17, the switchable magnetic force adapter assembly 17 are placed on the small inner ring 19 of hub bearing.The current vortex sensor 6 passes through
Bolt 22 is locked on current vortex mounting platform 7.Multiple current vortex sensors 6 are installed on current vortex mounting platform 7, are led to
It is standing to set three current vortex sensors 6, it is measured using 3 points, 3 points determine a plane, realize axial to hub bearing 18 negative
The precise measurement of clearance.
The switchable magnetic force adapter assembly 17 includes the back box 10 made of non-magnet material and for being bonded hub spindle
Hold small inner ring 19 and it is bonded bottom 11 made of permeability magnetic material, is movably equipped with made of non-magnet material in back box 10
Annulus 12 is rotated, fitting bottom 11 is mounted in back box 10, and fitting bottom 11 is located under rotation annulus 12, and pressing plate 14 is mounted on
It rotates on annulus 12, Target Board 15 is mounted on pressing plate 14, the non-magnetic area 16 of circumference uniform distribution in the back box 10, rotates annulus
Several magnet 13 of circumference uniform distribution on 12.Fitting bottom 11 and Target Board 15 are made of Steel material, back box 10, rotation annulus 12
It is made with pressing plate 14 of aluminum material, effectively avoids the magnetic influence to current vortex sensor 6.Rotation annulus 12 rotates centainly
Magnet 13 is contacted with fitting bottom 11 after angle, the magnetization to fitting bottom 11 is realized, so that switchable magnetic force adapter assembly 17
It is fitted on the small inner ring 19 of hub bearing.When to remove switchable magnetic force adapter assembly 17, rotation annulus 12 is rotated, and makes magnetic
Iron 13 goes to the non-magnetic area 16 in back box 10, so that fitting bottom 11 is in erasing state, it may be convenient to remove.In addition,
Rotation 12 inner ring of annulus at be typically designed as it is trapezoidal, prevent hinder riveter 21 normal work.In addition, due to rotating annulus 12
Different sizes are replaced by with fitting bottom 11, can adapt to the small inner ring 19 of hub bearing of different-diameter size, therefore can open
The direct measuring type current vortex that pass magnetic force adapter assembly 17 can be used for the negative clearance of axial direction of the hub bearing 18 of different sizes, model exists
Line detection.
Sleeve 3 is housed on the installation strut 5.Sleeve 3 is equipped with the split pin 4 for attaching current vortex mounting platform 7.
By the way that sleeve 3 is arranged, so that installation is even closer, increase stress point using split pin 4, reduction generates vibration during being riveted
Caused loosening.In addition, passing through split pin 4, it may be convenient to it is replaced replacement, it can when replacing product type
With more convenient.It since split pin 4 and sleeve 3 are easily worked, and can guarantee precision, reduce the error that installation gap generates,
And it firmly installs whole device, is easy to change.
The small inner ring 19 of hub bearing is bonded with bottom 11 is bonded, and being bonded bottom 11 at this time has magnetism.Using magnetism, guarantee
Switchable magnetic force adapter assembly 17 is fitted closely with the small inner ring 19 of hub bearing.When riveting equipment is pressed downward hub bearing 18,
Switchable magnetic force adapter assembly 17 follows the small inner ring 19 of hub bearing that synchronous shift variation occurs.Switchable magnetic force adapter assembly
17 convert the displacement of the small inner ring 19 of hub bearing to the displacement of switchable magnetic force adapter assembly 17, pass through current vortex sensor 7
The displacement of switchable magnetic force adapter assembly 17 is measured, to obtain the axial negative gap value of the hub bearing 18.
The specific working principle of the present invention is: being zero to be mounted on transition sleeve 8 to riveting hub bearing 18 by initial play
After be placed on pedestal 2, and between pedestal 2 and transition sleeve 8 be arranged pressure sensor 9,9 upper surface of pressure sensor
It is contacted with 8 bottom surface of transition sleeve, lower end surface is contacted with pedestal 2；Switchable magnetic force adapter assembly 17 is placed on hub bearing 18
On, closed magnetic circuit, switchable magnetic force adapter assembly 17 is fitted closely with the small inner ring 19 of hub bearing 18.
Starting riveting equipment, 20 flange of small inner shaft that the riveter 21 of the riveting equipment treats riveting piece applies axial compressive force,
When pressure sensor 9 detect axial compressive force be equal to preset pressure value when, read at this time current vortex sensor 6 to Target Board 15
Measured value and be labeled as A value, at this time 18 position of hub bearing be initial zero windage base position；This initial zero
The base position of clearance, to be mutually compacted between riveting hub bearing 18, transition sleeve 8 and pressure sensor 9, each other between
Gap is eliminated.Continue to apply axial compressive force to small 20 flange of inner shaft, hub bearing 18 forms negative clearance, and current vortex sensor 6 is right
The negative clearance carries out real-time measurement, and when the negative clearance measured reaches zone of reasonableness, riveting equipment resets, riveter 21 gradually from
Open hub bearing 18, the axial compressive force that hub bearing 18 is subject to is gradually reduced and generates elastic recovery, and Target Board 15 is to moving up
Dynamic, the negative gap value of 6 real-time measurement of current vortex sensor reduces, when pressure sensor 9 detects that pressure value is again equal to preset
When pressure value, reads the measured value of current vortex sensor 6 at this time and be labeled as B value.The difference of B value and A value is calculated, which is
The negative clearance of hub bearing 18.
It should be noted that the above is not limited to the present invention, concept of the invention is not being departed from
Under the premise of, it is any obviously replace it is within the scope of the present invention.
Claims (4)
1. a kind of direct measuring type current vortex on-line measuring device of the axial negative clearance of hub bearing, including current vortex displacement detection dress
It sets, transition sleeve, pressure sensor.
Current vortex displacement detection device includes the pedestal being placed on riveting equipment workbench, which is characterized in that on the pedestal
Equipped with installation strut, current vortex mounting platform is housed on the installation strut, is sensed on the current vortex mounting platform equipped with current vortex
Device, current vortex mounting platform top are equipped with switchable magnetic force adapter assembly, which is placed on hub spindle
It holds on small inner ring, the current vortex sensor is locked on current vortex mounting platform by bolt.
2. a kind of direct measuring type current vortex on-line measuring device of the axial negative clearance of hub bearing according to claim 1,
It is characterized in that, the switchable magnetic force adapter assembly includes the back box made of non-magnet material and installs hub spindle for being bonded
Hold small inner ring and bottom is bonded made of permeability magnetic material, back box is equipped with and rotates annulus made of non-magnet material, should
Rotate annulus and back box can mutual circular-rotation, fitting bottom is mounted on the bottom box, and fitting bottom is located under rotation annulus, pressing plate
It is mounted on rotation annulus, Target Board is mounted on pressing plate, the non-magnetic area of circumference uniform distribution in the back box, rotates circumference on annulus
Uniformly distributed several magnet.
3. a kind of direct measuring type current vortex on-line measuring device of the axial negative clearance of hub bearing according to claim 2,
It is characterized in that, sleeve is housed on the installation strut, and the sleeve is equipped with the split pin for attaching current vortex mounting platform.
4. a kind of direct measuring type current vortex on-line measuring device of the axial negative clearance of hub bearing according to claim 2,
It is characterized in that, the fitting bottom and Target Board are made of Steel material, and back box, rotation annulus and pressing plate use aluminum material system
At.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711050763.7A CN109724510B (en) | 2017-10-31 | 2017-10-31 | A direct-measuring eddy current on-line detection device for wheel hub bearing axial negative clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711050763.7A CN109724510B (en) | 2017-10-31 | 2017-10-31 | A direct-measuring eddy current on-line detection device for wheel hub bearing axial negative clearance |
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| Publication Number | Publication Date |
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| CN109724510A true CN109724510A (en) | 2019-05-07 |
| CN109724510B CN109724510B (en) | 2020-09-29 |
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| CN201711050763.7A Active CN109724510B (en) | 2017-10-31 | 2017-10-31 | A direct-measuring eddy current on-line detection device for wheel hub bearing axial negative clearance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657772A (en) * | 2019-11-12 | 2020-01-07 | 济南易恒技术有限公司 | Third-generation direct detection method and device for negative clearance of hub bearing unit |
| CN112816215A (en) * | 2021-03-22 | 2021-05-18 | 洛阳Lyc汽车轴承科技有限公司 | Device for measuring relation between torque and axial force of hub bearing |
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| US6184993B1 (en) * | 1999-02-09 | 2001-02-06 | Phase Metrics, Inc. | Apparatus for measuring a small gap using a Savart plate |
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2017
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| US6184993B1 (en) * | 1999-02-09 | 2001-02-06 | Phase Metrics, Inc. | Apparatus for measuring a small gap using a Savart plate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657772A (en) * | 2019-11-12 | 2020-01-07 | 济南易恒技术有限公司 | Third-generation direct detection method and device for negative clearance of hub bearing unit |
| CN110657772B (en) * | 2019-11-12 | 2020-09-01 | 济南易恒技术有限公司 | Third-generation direct detection method and device for negative clearance of hub bearing unit |
| CN112816215A (en) * | 2021-03-22 | 2021-05-18 | 洛阳Lyc汽车轴承科技有限公司 | Device for measuring relation between torque and axial force of hub bearing |
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| CN109724510B (en) | 2020-09-29 |
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