CN206387678U - Roll fretting wear experimental rig - Google Patents
Roll fretting wear experimental rig Download PDFInfo
- Publication number
- CN206387678U CN206387678U CN201621386516.5U CN201621386516U CN206387678U CN 206387678 U CN206387678 U CN 206387678U CN 201621386516 U CN201621386516 U CN 201621386516U CN 206387678 U CN206387678 U CN 206387678U
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- China
- Prior art keywords
- ball
- fretting wear
- buffer table
- abrading
- test specimen
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a kind of roll and is vertically provided with some guide rods on fretting wear experimental rig, left base；Buffer table is installed on guide rod；Test specimen is fixed and is fixed on buffer table with lower clamp；The upper surface of test specimen is for recessed arc surface and in being placed with arc surface to abrading-ball；Rotary motor is fixed on right base, the rotary shaft connection turntable of rotary motor；Turntable is connected by upper fixture to abrading-ball；ATI 6 DOF F/T sensors are placed on buffer table, the output end connection signal acquiring system of ATI 6 DOF F/T sensors；Foil gauge is implanted with along the axis centre of test specimen, foil gauge connection electric bridge, electric bridge connects signal acquiring system by dynamic strain indicator；Signal acquiring system connects computer.The present apparatus is simple in construction, easy to loading and unloading, it is easy to repeat to test, and solves the problem of rolling fretting wear is difficult to test.
Description
Technical field
The utility model is related to fretting wear experimental rig field, more particularly to a kind of rolling fretting wear experimental rig,
Method and wearing depth modeling method.
Background technology
Fine motion is the motion for occurring the minimum amplitude (being usually micron dimension) between two contact surfaces, these contact surfaces
Generally it is nominally static, i.e. fine motion occurs in the mechanical part that " fastening " coordinates, and fretting wear is to local work repeatedly
With, it can cause to contact Surface Wear, and fatigue crack can be germinated, local fatigue intensity is reduced, makes component of machine
Life-span substantially reduces.Fretting damage is prevalent in machinery industry, nuclear reactor, aerospace vehicle, science of bridge building, automobile, iron
In road, ship, the power industry even tight fit part in field such as Artificial Intervention device, failed as some key components and parts
One of the main reasons.
At present, for the ease of research, generally for simplified ball-flat surface contact manner, according to relative motion between contact
Difference, fine motion can be divided into 4 kinds of basic operational modes, i.e.,：Tangentially, radial direction, rotation and twisting or micro-moving.Rotary micromotion includes two again
Class, i.e.,：Roll fine motion and rotary micromotion.
It is that fine motion occurs under alternate load on rolling surface for rolling element to roll fine motion, and produces roll a little relative
Motion；Compared with rotary micromotion, displacement is not present when motion in the rotary shaft of rotary micromotion, and rolls the rotary shaft of fine motion
It there is displacement.The infringement that rolling fine motion is brought is the main failure forms of wind power bearing.At present, the research on fretting wear
All it is based on simplified ball-plane contact form, for the fretting wear of complicated contact form, such as to roll fine motion mill
Damage then due to the limitation of testing equipment, it is impossible to carry out simulated experiment detection research.
Research rolls the device of fretting test, to improve mechanical relevant design, reduces the rolling occurred in engineering
Fretting wear problem, is of great significance to improving equipment with the performance of part and life-span tool.
Utility model content
The purpose of this utility model is to provide a kind of rolling fretting wear experimental rig, can not entered with solving prior art
Row rolls the problem of fretting wear is tested.
To achieve these goals, the utility model takes following technical scheme：
Fretting wear experimental rig is rolled, including：Left base, buffer table, lower clamp, to abrading-ball, upper fixture, turntable,
Rotary motor, right base, ATI 6 DOF F/T sensors, guide rod, foil gauge, signal acquiring system and computer；On left base
Vertically it is provided with some guide rods；Buffer table is installed on guide rod；Test specimen is fixed and is fixed on buffer table with lower clamp；
The upper surface of test specimen is for recessed arc surface and in being placed with arc surface to abrading-ball；Rotary motor is fixed on right base, is returned
Turn the rotary shaft connection turntable of motor；Turntable is connected by upper fixture to abrading-ball；ATI 6 DOF F/T sensors are placed in buffering
On platform, the output end connection signal acquiring system of ATI 6 DOF F/T sensors；Foil gauge is implanted with along the axis centre of test specimen,
The foil gauge connects electric bridge, and electric bridge connects signal acquiring system by dynamic strain indicator；Signal acquiring system connects computer.
Further, the lower surface center of buffer table is provided with stud.
Further, abrading-ball is connected by angular contact ball bearing with being connected to the short axle of upper fixture.
Further, short axle is eccentrically mounted in upper fixture.
Further, the cambered surface of test specimen upper surface is the enveloping surface to abrading-ball rolling track.
In the utility model, the normal load scope for rolling fretting wear experimental rig is between 5~420N；Roll
Minimum angular displacement amplitude is 0.36 °；0.01~5 °/s of angular speed control range, tangential force measurement range is 1.8~180N, moment of torsion
10~10000Nmm of measurement range, measurement accuracy is 4Nmm, cycle-index 1~1000 time.
Relative to prior art, the utility model has the advantage of：
(1) it can be seen that from experimental provision, the characterisitic parameter tested out to abrading-ball and test specimen directly effect all directly with having
Close, the physical quantity number of measurement is less, it can be ensured that structure rolls dynamic spy of the Fretting Wear Behavior from experimental provision system
It is easier to separate in property.And use the direct method of measurement.
(2) studied for the ease of rolling each basic influence factor of Fretting Wear Behavior to influence, this experimental provision
It is simple in construction, be easily changed, be easy to positioning, can carry out repeat experiment.
(3) design of this experimental provision upper fixture, by the non-home position tapping female bore of disk, so that by disk around axle
The reciprocating rotation of heart low-angle, is changed into the short axle reciprocally swinging coordinated with screwed hole.Device is easily manufactured, and assembling is easy.
(4) this experimental provision buffer table is easy to lower clamp, with installing, to be conducive in positioning thereon to abrading-ball using porous plate
With the mutual cooperation of test specimen, to ensure kinematic accuracy.
(5) this experimental provision can be by changing screw-in depth of the short axle being connected with to abrading-ball in upper fixture, so as to change
Become the contact point to abrading-ball curved surface and test specimen top-surface camber.Ensure that device is reduced because of tune to abrading-ball while making full use of
The whole time expended to abrading-ball position.
(6) this experimental provision is by being used in combination high-precision low speed rotary motor and high-precision A TI 6 DOF F/T sensors,
The precision that experimental provision operating and experimental data are measured is substantially increased, the difficulty of Data Processing in Experiment has been greatly reduced, has made
The reliability for obtaining modeling method is guaranteed.
Brief description of the drawings
Fig. 1 is the installation drawing that the utility model roll fretting wear experiment.
Fig. 2 is this experimental rig upper fixture figure；Wherein Fig. 2 (a) is the front view of upper fixture, and Fig. 2 (b) is left view.
Fig. 3 is this experimental rig to abrading-ball figure：Wherein Fig. 3 (a) is the front view to abrading-ball, and Fig. 3 (b) is that left (cuing open) regards
Figure.
Fig. 4 is this experimental rig test specimen figure；Wherein Fig. 4 (a) is front view, and Fig. 4 (b) is left (cuing open) view.
Fig. 5 is this experimental rig short axle front view.
Embodiment
Further is made to rolling fretting wear experimental rig of the present utility model below in conjunction with operation principle and Structure Figure
Describe in detail.
As shown in Figures 1 to 5, the utility model one kind rolls fretting wear experimental rig, including left base, stud, slow
Rush platform, lower clamp, to abrading-ball, angular contact ball bearing, short axle, upper fixture, turntable, high-precision low speed rotary motor, bearing support,
Right base, high-precision A TI 6 DOF F/T sensors, guide rod, foil gauge, signal acquiring system, computer.Base is vertically led
It is placed with to bar in the middle part of buffer table, buffer table and sets stud, test specimen is fixed with lower clamp and is connected by bolt with buffer table, test specimen
Upper surface be placed with to abrading-ball for recessed arc surface and on described arc surface；To abrading-ball by angular contact ball bearing with
The short axle for being connected to upper fixture is connected, and upper fixture is connected with turntable, and turntable turns round horse by coupled high-precision low speed
Up to driving, motor is placed on bearing support, and bearing support is bolted on right base；High-precision A TI 6 DOF F/T sensors are put
In delivering to signal acquiring system on buffer table and by the signal of collection；Foil gauge built in test specimen, foil gauge connection electric bridge, electric bridge
Signal acquiring system is connected by dynamic strain indicator；Signal acquiring system connects computer, and the test data collected is passed
Give computer.Moment of friction, normal force and the stress value under different Variable Conditions are obtained, the characteristics of finding out rolling fretting wear
And rule.
Test specimen upper surface is processed as arc with the contact surface to abrading-ball in the utility model, is easy to the formation rolled.It is first
First sample is connected with lower clamp, the buffer table for being then placed in lower clamp on base with vertically guide rod is bolted together；
Being placed in abrading-ball on test specimen for short axle will be connected to by angular contact ball bearing；High-precision low speed rotary motor is driven through revolution
The upper fixture of platform connection, so as to drive the short axle for being threadedly connected to upper fixture；High-precision A TI 6 DOF F/T sensors are placed in buffering
On platform；Stud is placed in the middle part of buffer table；Set normal load, rotational displacement amplitude, rotating speed, circulation cycle, tangential force and torsion
One of square is variable, carries out fretting wear experiment；Then change selected variable, then carry out fretting wear experiment, respectively
The experimental datas such as moment of friction, normal force and rotating speed are extracted, wearing depth is calculated.
Different normal loads, angle of rotation are tested using a kind of device for testing rolling Fretting Wear Behavior of the utility model
The method of rolling Fretting Wear Behavior under displacement amplitude, rotating speed, circulation cycle, tangential force and moment of torsion, including：It is respectively adopted not
Same Variable Control pattern, obtains moment of friction, normal force rotating speed experimental data, calculates wearing depth；According under different condition
Test data, research influence roll Fretting Wear Behavior principal element and principal element on roll fretting wear influence rule
Rule.For rolling Fretting Wear Behavior under different condition, simulated using model, reach prediction different condition under roll it is micro-
The purpose of dynamic wearing character.Different conditions are changed using the present apparatus (such as：The material of test specimen, the processing method of faying face, combination
Relative displacement property, integrally-built dynamic loading property between the crudy in face, the medium condition of faying face, faying face and big
The factor such as small) experiment under different condition can be done, so that Fretting Wear Behavior is rolled under obtaining different condition, according to experiment number
The effect of the principal element and principal element of Fretting Wear Behavior to rolling fretting wear is rolled under influence different condition according to the study
Rule, so as to predict the rolling Fretting Wear Behavior of different condition.
The utility model is in different rotational displacement amplitudes, normal load for ball-plane rolling fine motion, rotating speed, followed
State of wear under ring cycle, tangential force and torque condition, using rolling fretting wear experimental rig and wearing depth modeling side
Method is simulated, so that the characteristics of finding out rolling fretting wear and rule；
Refer to shown in Fig. 1 to Fig. 5, the utility model one kind rolls fretting wear experimental rig, including：Left base 1, spiral shell
Post 3, buffer table 4, lower clamp 6, to abrading-ball 10, angular contact ball bearing 8, short axle 9, upper fixture 11, turntable 12, high accuracy it is low
Fast rotary motor 13, bearing support 14, right base 15, high-precision A TI 6 DOF F/T sensors 5, guide rod 2, foil gauge, signal are adopted
Collecting system and computer.
Vertically guide rod 2 is placed with buffer table 4 on left base 1, and the middle part of buffer table 4 sets stud 3 (by rotating stud 3
For adjusting to the active force between abrading-ball 10 and test specimen 7), test specimen 7 is fixed with lower clamp 6 and by bolt and the phase of buffer table 4
Even, the upper surface of test specimen 7 is for recessed arc surface and in being placed with arc surface to abrading-ball 10；Angular contact ball is passed through to abrading-ball 10
Bearing 8 is connected with being connected to the short axle 9 of upper fixture 11, and upper fixture 11 is connected with turntable 12, and turntable 12 is by coupled
High-precision low speed rotary motor 13 is driven, and motor 13 is placed on bearing support 14, and bearing support 14 is bolted on right base 15
On；High-precision A TI 6 DOF F/T sensors 5 are placed on buffer table 4 and the signal of collection are delivered into signal acquiring system；Along test specimen
Foil gauge is implanted with 7 axis centre, foil gauge connection electric bridge, electric bridge connects signal acquiring system by dynamic strain indicator；
Signal acquiring system connects computer, and sends the test data collected to computer.
Left base 1 is provided with buffer table 4, and test specimen 7 is moved up and down by buffer table 4, and completes the spiral shell by buffer table 4
The loading of post 3.
Short axle 9 is screwed into by axle body in the eccentric axis screwed hole of upper fixture 11.
The upper surface of test specimen 7 is that cambered surface is the enveloping surface to the rolling track of abrading-ball 10.
Buffer table 4 is that porous plate is easy to lower clamp (6) in positioning thereon and installation, to ensure machining accuracy.
The normal load scope of the experimental rig is between 5~420N；The minimum angular displacement amplitude of rolling is 0.36 °；
0.01~5 °/s of angular speed control range, tangential force measurement range is 1.8~180N, 10~10000N of torque measurement scope
Mm, measurement accuracy is 4Nmm, cycle-index 1~1000 time.
When the utility model one kind rolling fretting wear experimental rig is tested, comprise the following steps：
Test specimen 7 is connected with lower clamp 6 first, is then placed in lower clamp 6 and vertically guide rod 2 slow on base 1
Platform 4 is rushed to be bolted together；Being placed in abrading-ball 10 on test specimen 7 for short axle 9 will be connected to by angular contact ball bearing 8；High accuracy is low
Fast rotary motor 13 is driven through the upper fixture 11 of the connection of panoramic table 12, so as to drive the short axle 9 for being threadedly connected to upper fixture 11；
High-precision A TI 6 DOF F/T sensors 5 are placed on buffer table 4；Stud 3 is placed in the middle part of buffer table 4；Set normal load, angle of rotation
One of displacement amplitude, rotating speed, circulation cycle, tangential force and moment of torsion are variable, carry out fretting wear experiment；Then change institute
The variable of choosing, then fretting wear experiment is carried out, moment of friction, normal force and rotating speed experimental data are extracted respectively, calculate abrasion deep
Degree, therefrom recognizes affecting laws of each factor to fretting wear.
Claims (5)
1. roll fretting wear experimental rig, it is characterised in that including：Left base (1), buffer table (4), lower clamp (6), to mill
Ball (10), upper fixture (11), turntable (12), rotary motor (13), right base (15), ATI 6 DOF F/T sensors (5), guiding
Bar (2), foil gauge, signal acquiring system and computer；
Some guide rods are vertically provided with left base；Buffer table is installed on guide rod；Test specimen is fixed and consolidated with lower clamp
It is scheduled on buffer table；The upper surface of test specimen is for recessed arc surface and in being placed with arc surface to abrading-ball；
Rotary motor is fixed on right base, the rotary shaft connection turntable of rotary motor；Abrading-ball is connected by upper fixture and revolved
Turntable；
ATI 6 DOF F/T sensors are placed on buffer table, the output end connection signal acquiring system of ATI 6 DOF F/T sensors；Edge
Foil gauge is implanted with the axis centre of test specimen, foil gauge connection electric bridge, electric bridge connects signal acquisition system by dynamic strain indicator
System；Signal acquiring system connects computer.
2. rolling fretting wear experimental rig according to claim 1, it is characterised in that the lower surface center of buffer table is set
There is stud (3).
3. rolling fretting wear experimental rig according to claim 1, it is characterised in that angular contact ball axle is passed through to abrading-ball
Hold and be connected with being connected to the short axle of upper fixture.
4. rolling fretting wear experimental rig according to claim 3, it is characterised in that short axle is eccentrically mounted in upper fixture
On.
5. it is according to claim 1 rolling fretting wear experimental rig, it is characterised in that the cambered surface of test specimen upper surface for pair
The enveloping surface of abrading-ball rolling track.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621386516.5U CN206387678U (en) | 2016-12-16 | 2016-12-16 | Roll fretting wear experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621386516.5U CN206387678U (en) | 2016-12-16 | 2016-12-16 | Roll fretting wear experimental rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206387678U true CN206387678U (en) | 2017-08-08 |
Family
ID=59488707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621386516.5U Withdrawn - After Issue CN206387678U (en) | 2016-12-16 | 2016-12-16 | Roll fretting wear experimental rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206387678U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067295A (en) * | 2020-09-07 | 2020-12-11 | 沈阳建筑大学 | All-ceramic ball bearing outer ring raceway rolling contact fatigue test device and test method |
| WO2021227376A1 (en) * | 2020-05-14 | 2021-11-18 | 北京工业大学 | Measuring device for measuring friction coefficient under condition of periodic deformation of material |
| CN107036921B (en) * | 2016-12-16 | 2023-07-14 | 西安建筑科技大学 | Rolling fretting wear test device and method and wear depth modeling method |
-
2016
- 2016-12-16 CN CN201621386516.5U patent/CN206387678U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036921B (en) * | 2016-12-16 | 2023-07-14 | 西安建筑科技大学 | Rolling fretting wear test device and method and wear depth modeling method |
| WO2021227376A1 (en) * | 2020-05-14 | 2021-11-18 | 北京工业大学 | Measuring device for measuring friction coefficient under condition of periodic deformation of material |
| US11428625B2 (en) | 2020-05-14 | 2022-08-30 | Beijing University Of Technology | Device for measuring friction coefficient under the condition of material periodic deformation |
| CN112067295A (en) * | 2020-09-07 | 2020-12-11 | 沈阳建筑大学 | All-ceramic ball bearing outer ring raceway rolling contact fatigue test device and test method |
| CN112067295B (en) * | 2020-09-07 | 2022-04-22 | 沈阳建筑大学 | All-ceramic ball bearing outer ring raceway rolling contact fatigue test device and test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170808 Effective date of abandoning: 20230714 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170808 Effective date of abandoning: 20230714 |