CN106840076B - A kind of bearing clearance and friction torque comprehensive tester - Google Patents
A kind of bearing clearance and friction torque comprehensive tester Download PDFInfo
- Publication number
- CN106840076B CN106840076B CN201710056256.8A CN201710056256A CN106840076B CN 106840076 B CN106840076 B CN 106840076B CN 201710056256 A CN201710056256 A CN 201710056256A CN 106840076 B CN106840076 B CN 106840076B
- Authority
- CN
- China
- Prior art keywords
- bearing
- air
- main shaft
- torque
- fixing sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/16—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance of clearance between spaced objects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0009—Force sensors associated with a bearing
Abstract
A kind of bearing clearance and friction torque comprehensive tester, belong to bearing testing field.Voice coil motor is affixed by motor contact and pressure sensor, pressure sensor is affixed with pressure connectors, it is connected between pressure connectors and air-floating main shaft connector by steel ball, air-floating main shaft connector and air-floating main shaft are affixed, air-floating main shaft is sleeved in air bearing housing, measured bearing outer ring fixing sleeve is installed in air-floating main shaft, measured bearing outer ring fixing sleeve is in the fixing sleeve of measured bearing outer ring, dense ball bearing shafting is fixed in measured bearing inner ring fixing sleeve, circumferential loading motor is fixedly mounted in circumferential loading motor support frame, circumferential loading motor and dense ball bearing shafting are affixed, scroll chuck is affixed with linear guide, displacement sensor is fixed on scroll chuck, torque measurement support frame and bearing test platform main body are affixed, torque sensor is connect by torque sensor fixed frame with torque measurement support frame.The present invention is used for bearing clearance and friction torque integration test.
Description
Technical field
The present invention relates to a kind of bearing clearance and friction torque testers, belong to bearing testing field.
Background technique
Bearing is the core part of high-precision high-torque executing agency, special high-torque flywheel and control-moment gyro etc.,
The failure of bearing will directly affect the normal work of executing agency.Therefore, in the design of high-precision high-torque executing agency, axis
The long-life design held is a key factor.It is used in order to guarantee the smooth working of high-precision high-torque executing agency
Bearing must all apply certain axial pre tightening force, and the selection of pretightning force size need to consider from the different operating conditions of bearing.
In general the real work operating condition of space mechanical moving components is divided into two kinds of situations: operating condition when rocket launching and in-orbit
Operating condition when normal work.For the operation on orbit time, operating condition duration when rocket launching is very short.So
And the judder that generates when emitting, large impact can make to generate high contact stress in bearing, be likely to result in steel ball or track
Permanent plastic deformation increases bearing frictional torque；In addition if the inertia force that vibration when rocket launching generates substantially exceeds axis
The pretightning force held, bearing may unload moment, generate gap, and collide repeatedly, these also can cause to damage to bearing, thus
Job stability and working life after influencing the bearing of executing agency in orbit.
The above problem can be overcome by increasing the axial pre tightening force of bearing in practical applications.In general, bearing is pre-
Clamp force is one fixed value of setting to generate rigidity appropriate, meets requirement when transmitting.Meanwhile main shaft is more to bearings
There is highly sensitive and low friction moment requirement, this requires the pretightning forces applied to it must be accurate.If practical pre-tighten
Power is less than design pretightning force, then the rigidity of bearing cannot be met the requirements；If practical pretightning force is greater than design pretightning force, break again
It is broken the highly sensitive performance of bearing, so being to pass for the use of bearing to the accuracy of the practical pretightning force of bearing application
Important.
Summary of the invention
It is measurement axially different it is an object of the invention to propose a kind of bearing clearance and friction torque comprehensive tester
The variation of the end-play and friction torque of loading force lower bearing, and authentic data is provided for the actual installation of bearing.
Realize above-mentioned purpose, the technical solution adopted by the present invention is as follows:
A kind of bearing clearance and friction torque comprehensive tester, including bearing test platform main body, voice coil motor support bottom
Seat, voice coil motor, motor contact, pressure sensor, pressure connectors, steel ball, air-floating main shaft connector, axially loaded axis,
Measured bearing outer ring fixing sleeve, torque measurement end cap, linear guide, scroll chuck, three displacement sensors, torque sensors are solid
Determine frame, torque sensor, torque measurement support frame, measured bearing, measured bearing inner ring fixing sleeve, dense ball bearing shafting, loading motor
Support frame, circumferential loading motor, transition support frame and internal integrated support plate, the axially loaded axis are air bearing, axis
It include air-floating main shaft and air bearing housing to loading axis；
The voice coil motor lower end is fixed in bearing test platform main body by voice coil motor support base, voice coil motor
Output end is fixedly connected by motor contact with pressure sensor, the pressure sensor upper end and the fixed company of pressure connectors
It connects, is connected between the pressure connectors upper end and air-floating main shaft connector lower end by steel ball, the air-floating main shaft connector
Upper end is fixedly connected with air-floating main shaft lower end, and the air-floating main shaft is sleeved in air bearing housing, and air-floating main shaft is equipped with center
Chamber, air-floating main shaft center cavity upper end are equipped with shoulder hole, the measured bearing with its clearance fit are equipped in air-floating main shaft shoulder hole
Outer ring fixing sleeve, the measured bearing inner ring fixation are set in the fixing sleeve of measured bearing outer ring, and measured bearing inner ring is fixed
The annular groove for installing measured bearing is equipped between set and measured bearing outer ring fixing sleeve, the fixed set upper side in measured bearing outer ring is set
It sets in the interior shoulder hole of torque measurement end cap and the two clearance fit, the main shaft upper end of the dense ball bearing shafting is fixed on measured axis
It holds in inner ring fixing sleeve, the circumferential direction loading motor is fixedly mounted in loading motor support frame, circumferential loading motor output shaft
It is fixedly connected with dense ball bearing shafting lower end, the loading motor support frame is arranged in the center cavity of air-floating main shaft, loading motor branch
Support lower end is fixedly connected by transition support frame with inside integrated support plate, and the linear guide is vertically arranged in torque measurement
Above end cap, the scroll chuck is fixedly connected with linear guide, and fixed on three claws of scroll chuck there are three displacements to pass
Sensor, torque measurement support frame lower end are fixedly connected with bearing test platform main body upper surface, torque sensor fixed frame
For one end Demountable assembling on torque measurement support frame, torque sensor fixed frame other end lower part is fixed with torque sensor.
The beneficial effect of the present invention compared with the existing technology is: the invention proposes a kind of bearing clearance and friction torque are comprehensive
Tester is closed, compared with other bearing test products, the present invention can accurately measure measured bearing and act in axially different pretightning force
Under bearing friction coefficient and bearing axial play variation, the present invention use whole-process automatic load, measured bearing installation and
Convenient disassembly, operator can complete the measurement to measured bearing by simple operations, while in measurement bearing friction coefficient
Torque sensor front end be micro-adjusted using spring, ensure that the concentricity of measured bearing outer ring and torque sensor,
The end-play of measurement bearing is evenly distributed on measured bearing outer ring using three displacement sensors and carries out at 3 points while measuring (to survey
Need three displacement sensors being returned to initial position after amount) to preferably ensure that measurement accuracy.
Detailed description of the invention
Fig. 1 is the main sectional view of of the invention a kind of bearing clearance and friction torque comprehensive tester;
Fig. 2 is partial enlarged view at the A of Fig. 1；
Fig. 3 is partial enlarged view at the B of Fig. 1；
Fig. 4 is partial enlarged view at the C of Fig. 3.
Wherein, bearing test platform main body 1, voice coil motor support base 2, voice coil motor 3, motor contact 4, pressure pass
Sensor 5, pressure connectors 6, steel ball 7, air-floating main shaft connector 8, air-floating main shaft 9, air bearing housing 10, measured bearing outer ring
Fixing sleeve 11, torque measurement end cap 12, linear guide 13, scroll chuck 14, displacement sensor 15, torque sensor fixed frame
16, torque sensor 17, torque measurement support frame 18, measured bearing 19, measured bearing inner ring fixing sleeve 20, dense ball bearing shafting 21,
Loading motor support frame 22, circumferential loading motor 23, transition support frame 24, internal integrated support plate 25, spring 26.
Further description of the technical solution of the present invention with reference to the accompanying drawing, and however, it is not limited to this, all to this
Inventive technique scheme is modified or replaced equivalently, and without departing from the spirit and scope of the technical solution of the present invention, should all be covered
Within the protection scope of the present invention.
Specific embodiment
Specific embodiment 1: as shown in Fig. 1 ~ Fig. 4, a kind of bearing clearance and friction torque comprehensive tester, including axis
Hold test platform main body 1, voice coil motor support base 2, voice coil motor 3, motor contact 4, pressure sensor 5, press-in connection
Part 6, steel ball 7, air-floating main shaft connector 8, axially loaded axis, measured bearing outer ring fixing sleeve 11, torque measurement end cap 12, straight line
Guide rail 13, scroll chuck 14, three displacement sensors 15, torque sensor fixed frame 16, torque sensor 17, torque measurement branch
Support 18, measured bearing 19, measured bearing inner ring fixing sleeve 20, dense ball bearing shafting 21, loading motor support frame 22, circumferential load electricity
Machine 23, transition support frame 24 and internal integrated support plate 25, the axially loaded axis is air bearing, and axially loaded axis includes
Air-floating main shaft 9 and air bearing housing 10；
3 lower end of voice coil motor is fixed in bearing test platform main body 1 by voice coil motor support base 2, voice coil
3 output end of motor is fixedly connected by motor contact 4 with pressure sensor 5,5 upper end of pressure sensor and press-in connection
Part 6 is fixedly connected, and is connected between 6 upper end of pressure connectors and 8 lower end of air-floating main shaft connector by steel ball 7, the gas
Floating 8 upper end of main shaft connector is fixedly connected with 9 lower end of air-floating main shaft, and the air-floating main shaft 9 is sleeved in air bearing housing 10,
Air-floating main shaft 9 is equipped with center cavity, and 9 center cavity upper end of air-floating main shaft is equipped with shoulder hole, be equipped in 9 shoulder hole of air-floating main shaft and its
The measured bearing outer ring fixing sleeve 11 of clearance fit, the setting of measured bearing inner ring fixing sleeve 20 are fixed in measured bearing outer ring
In set 11, it is equipped between measured bearing inner ring fixing sleeve 20 and measured bearing outer ring fixing sleeve 11 for installing measured bearing 19
Annular groove (in order to meet the measurement demand of different bearings, is fixed using measured bearing corresponding with 19 internal-and external diameter of measured bearing outer ring
Set 11 and measured bearing inner ring fixing sleeve 20 complete the fixation of measured bearing 19, measured bearing outer ring fixing sleeve 11 and measured bearing
Clearance fit is all made of between 19 and between measured bearing inner ring fixing sleeve 20 and measured bearing 19), measured bearing outer ring is solid
Surely it covers 11 upper ends to be arranged in the interior shoulder hole of torque measurement end cap 12 and the two clearance fit, the main shaft of the dense ball bearing shafting 21
Upper end (passing through bolt) is fixed in measured bearing inner ring fixing sleeve 20, and the circumferential direction loading motor 23 is fixedly mounted on load electricity
In machine support frame 22, circumferential 23 output shaft of loading motor is fixedly connected with 21 lower end of dense ball bearing shafting, the loading motor support frame
22 are arranged in the center cavity of air-floating main shaft 9, and 22 lower end of loading motor support frame passes through transition support frame 24 and internal whole branch
Fagging 25 is fixedly connected, and the linear guide 13 is vertically arranged in 12 top of torque measurement end cap and (is fixed in linear guide 13
Handle, linear guide 13 are moved up and down by handle drives), the scroll chuck 14 is fixedly connected with linear guide 13, three-jaw
Fixed there are three displacement sensor 15 on three claws of chuck 14,18 lower end of torque measurement support frame and bearing test are flat
1 upper surface of platform main body is fixedly connected, and 16 one end Demountable assembling of torque sensor fixed frame is (two on torque measurement support frame 18
Person fixes radial through jackscrew), 16 other end lower part of torque sensor fixed frame is fixed with torque sensor 17.
Specific embodiment 2: as shown in Figures 1 and 2, a kind of bearing clearance and friction described in specific embodiment one
Torque-combining tester, the pressure connectors 6 are all made of cemented carbide material with air-floating main shaft connector 8 and are made.
Specific embodiment 3: as shown in Figures 1 and 2, a kind of bearing clearance and friction described in specific embodiment one
Torque-combining tester, 8 lower end surface of the air-floating main shaft connector middle part are equipped with hemispherical hole, the steel ball 7 and air bearing master
The hemispherical hole of shaft coupling piece 8 is interference fitted.
Specific embodiment 4: shown in as shown in Figure 1, Figure 3 and Figure 4, a kind of bearing described in specific embodiment one, two or three
Clearance and friction torque comprehensive tester, the bearing clearance and friction torque comprehensive tester further include spring 26, the bullet
Spring 26 is sleeved on the lower end of torque sensor 17.
The course of work is: as shown in Figure 1, driving air-floating main shaft 9 first, then being loaded, is passed through using voice coil motor 3
Pressure sensor 5 is completed to pressure connectors 6, steel ball 7, air-floating main shaft connector 8, air-floating main shaft 9 and measured bearing outer ring
Measured bearing 19, is then mounted on outside matched measured bearing by the measurement of the equal outer load influence factor of fixing sleeve 11
It encloses in fixing sleeve 11, then inside it, then by bearing inner race fixes the component being mounted in 9 center cavity of air-floating main shaft installation
Set 20 is mounted in 19 inner ring of measured bearing, is adjusted to make three by control linear guide 13 and scroll chuck 14
Displacement sensor 15 enter working range, loaded using voice coil motor 3, by the data collected of pressure sensor 5 with
And the additional loading effect power initially measured completes the load to the outer ring fixed numbers of measured bearing 19, by acquiring three positions
The 19 outer ring Axial changes of measured bearing collected of displacement sensor 15 completion axial play under fixed loading force to measured bearing 19
The measurement of gap.19 inner ring of measured bearing carries out circumferential load using circumferential loading motor 23, through measurement due to caused by friction
19 outer ring rotating of measured bearing friction torque to complete the survey to the coefficient of friction under fixed loading force of measured bearing 19
Amount.
When measuring bearing friction torque, needs to adjust linear guide 13 and scroll chuck 14 is returned to initial position, so
Torque measurement end cap 12 is installed afterwards, adjustment torque sensor fixed frame 16 measures torque sensor 17 to operating position.
When measuring bearing axial play, torque measurement end cap 12 need to be removed, then three positions by being fixed in linear guide 13
Displacement sensor 15 measures.
Claims (4)
1. a kind of bearing clearance and friction torque comprehensive tester, it is characterised in that: including bearing test platform main body (1), sound
Enclose motor support pedestal (2), voice coil motor (3), motor contact (4), pressure sensor (5), pressure connectors (6), steel ball
(7), air-floating main shaft connector (8), axially loaded axis, measured bearing outer ring fixing sleeve (11), torque measurement end cap (12), straight line
Guide rail (13), scroll chuck (14), three displacement sensors (15), torque sensor fixed frame (16), torque sensor (17),
Torque measurement support frame (18), measured bearing (19), measured bearing inner ring fixing sleeve (20), dense ball bearing shafting (21), loading motor
Support frame (22), circumferential loading motor (23), transition support frame (24) and internal integrated support plate (25) are described axially loaded
Axis is air bearing, and axially loaded axis includes air-floating main shaft (9) and air bearing housing (10)；
Voice coil motor (3) lower end is fixed in bearing test platform main body (1) by voice coil motor support base (2), sound
Circle motor (3) output end is fixedly connected by motor contact (4) with pressure sensor (5), pressure sensor (5) upper end
It is fixedly connected with pressure connectors (6), passes through between pressure connectors (6) upper end and air-floating main shaft connector (8) lower end
Steel ball (7) connection, air-floating main shaft connector (8) upper end are fixedly connected with air-floating main shaft (9) lower end, the air-floating main shaft
(9) it is sleeved in air bearing housing (10), air-floating main shaft (9) is equipped with center cavity, and air-floating main shaft (9) center cavity upper end is equipped with platform
Shoulder hole is equipped with the measured bearing outer ring fixing sleeve (11) with its clearance fit, the measured axis in air-floating main shaft (9) shoulder hole
Inner ring fixing sleeve (20) setting is held in measured bearing outer ring fixing sleeve (11), measured bearing inner ring fixing sleeve (20) and measured axis
The annular groove for installing measured bearing (19), measured bearing outer ring fixing sleeve (11) upper end are equipped between bearing outer-ring fixing sleeve (11)
It is arranged in the interior shoulder hole of torque measurement end cap (12) and the two clearance fit, the main shaft upper end of the dense ball bearing shafting (21) is solid
It is scheduled in measured bearing inner ring fixing sleeve (20), the circumferential direction loading motor (23) is fixedly mounted on loading motor support frame (22)
Interior, circumferential loading motor (23) output shaft is fixedly connected with dense ball bearing shafting (21) lower end, and the loading motor support frame (22) sets
It sets in the center cavity of air-floating main shaft (9), loading motor support frame (22) lower end is whole by transition support frame (24) and inside
Support plate (25) is fixedly connected, and the linear guide (13) is vertically arranged in above torque measurement end cap (12), the three-jaw card
Disk (14) is fixedly connected with linear guide (13), and fixed on three claws of scroll chuck (14) there are three displacement sensors
(15), torque measurement support frame (18) lower end is fixedly connected with bearing test platform main body (1) upper surface, torque sensor
Fixed frame (16) one end Demountable assembling is on torque measurement support frame (18), torque sensor fixed frame (16) other end lower part
It is fixed with torque sensor (17).
2. a kind of bearing clearance according to claim 1 and friction torque comprehensive tester, it is characterised in that: the pressure
Connector (6) is all made of cemented carbide material with air-floating main shaft connector (8) and is made.
3. a kind of bearing clearance according to claim 1 and friction torque comprehensive tester, it is characterised in that: the air bearing
Hemispherical hole, the hemispherical of the steel ball (7) and air-floating main shaft connector (8) are equipped in the middle part of main shaft connector (8) lower end surface
Hole interference fit.
4. a kind of bearing clearance according to claim 1,2 or 3 and friction torque comprehensive tester, it is characterised in that: institute
It states bearing clearance and friction torque comprehensive tester further includes spring (26), the spring (26) is sleeved on torque sensor (17)
Lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710056256.8A CN106840076B (en) | 2017-01-25 | 2017-01-25 | A kind of bearing clearance and friction torque comprehensive tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710056256.8A CN106840076B (en) | 2017-01-25 | 2017-01-25 | A kind of bearing clearance and friction torque comprehensive tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106840076A CN106840076A (en) | 2017-06-13 |
| CN106840076B true CN106840076B (en) | 2019-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710056256.8A Expired - Fee Related CN106840076B (en) | 2017-01-25 | 2017-01-25 | A kind of bearing clearance and friction torque comprehensive tester |
Country Status (1)
| Country | Link |
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| CN (1) | CN106840076B (en) |
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| CN107664549B (en) * | 2017-11-23 | 2024-03-15 | 南京林业大学 | Accurate measuring device for friction torque of mechanical seal end face |
| CN107941630B (en) * | 2017-11-28 | 2024-03-29 | 中车戚墅堰机车车辆工艺研究所股份有限公司 | Test device and method for measuring limit torque |
| CN108458664B (en) * | 2018-04-17 | 2020-08-11 | 江苏希西维轴承有限公司 | Axial clearance detector for ball-head pull rod bearing |
| CN108759758B (en) * | 2018-05-25 | 2020-10-16 | 永康市久爱久科技有限公司 | Engine bearing clearance detection device and measurement method |
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| CN109356999A (en) * | 2018-12-12 | 2019-02-19 | 中核新科（天津） 精密机械制造有限公司 | The close roller shafting of retarder high precision overloading |
| CN109386590A (en) * | 2018-12-12 | 2019-02-26 | 中核新科（天津） 精密机械制造有限公司 | Retarder high precision dense bead shafting |
| CN114061983A (en) * | 2021-11-19 | 2022-02-18 | 山东蓬翔汽车有限公司 | Device for detecting axial force of hub and bearing displacement in real time by applying torque |
| CN115077759A (en) * | 2022-06-15 | 2022-09-20 | 河南科技大学 | Measuring equipment and measuring method for dynamic friction torque of large-size bearing |
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| CN106840076A (en) | 2017-06-13 |
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Granted publication date: 20190212 Termination date: 20210125 |