CN106895972A - A kind of stick-slip experimental rig - Google Patents
A kind of stick-slip experimental rig Download PDFInfo
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- CN106895972A CN106895972A CN201710259977.9A CN201710259977A CN106895972A CN 106895972 A CN106895972 A CN 106895972A CN 201710259977 A CN201710259977 A CN 201710259977A CN 106895972 A CN106895972 A CN 106895972A
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Abstract
A kind of stick-slip experimental rig, belongs to tribology technology field.The device that the present invention is provided by control system control two-dimensional movement platform 2 in the horizontal direction with vertical direction on movement, make that strain force sensor 14 is fixed axle 6 and then compressing fixture 9 is so that keep the normal load of setting after upper friction member 10 and the contact of lower friction member 11, control system controls tumbler 3 to be rotated with the speed and direction of setting so that upper to produce Relative friction between friction member 10 and lower friction member 11.The present invention can effectively avoid friction member and lower friction member from contacting uneven phenomenon using two upper friction members 10, and then it is uneven to avoid contact with face stress distribution；The present apparatus can study frictional force, displacement, normal force, the Changing Pattern of speed under the relevant parameters such as friction member, different normal force, the friction speed of different materials, so as to study the mechanism of production and influence factor of stick-slip.
Description
Technical field
The invention belongs to tribology technology field, and in particular to a kind of stick-slip experimental rig.
Background technology
Stick-slip is that under certain condition, " fortune is static-dynamic for the one kind caused because static and dynamic friction coefficient numerical value is different
Only-move again-it is static again " friction phenomenon, be that a kind of friction self-excitation jumping between mutually sliding object at two occurs.
Used as a kind of typical friction phenomenon, stick-slip is widely present in mechanical system, and it is the main cause that system produces vibration
Therefore one, there is squeal-noise, Digit Control Machine Tool low speed in brakes when can bring mechanical system flutter, limit cycles oscillations, brake
When machining accuracy be deteriorated etc. numerous negative issues.Therefore in order to improve mechanical system stability and reduce vibration, improve lathe and add
Work precision, reduces frictional vibration noise and then development environment friendly motor vehicle braking system, and the tribology for carrying out stick-slip is special
Property correlative study work, such as friction force signal, displacement signal, normal direction force signal during stick-slip etc., with very
Important meaning.
At present, the research on stick-slip focuses mostly in numerically modeling both at home and abroad, lacks verification experimental verification.Therefore pin is developed
To the new method and its device of stick-slip experiment, and then stick-slip phenomenon is furtherd investigate by testing, for rich
Rich and development stick-slip correlation theory has important science and theory value, and appearance in reduction actual mechanical system is glued
The problem that sliding movement is triggered, improves the relevant design of plant equipment, and improving its performance and life-span, energy saving etc. has very
Important realistic meaning and engineering application value.
The content of the invention
It is an object of the invention to provide a kind of stick-slip experimental rig, can simulate and there may be stick-slip hidden danger
Different mechanical systems real working condition, by gathering the friction member of different materials in parameters such as different normal force, friction speeds
Lower frictional force, displacement, normal force, the change of rate signal, analyze the mechanism of production and influence factor of stick-slip, are that machinery sets
Standby optimization design provides theory support.
The technical scheme is that：
A kind of stick-slip experimental rig, including support 1, the top board 1A bottoms of support 1 are provided with two-dimensional movement platform 2, machine
Tumbler 3 is installed on the base plate 1B of seat 1,
Lower friction member 11 is installed, the speed and direction that lower friction member 11 sets according to tumbler 3 are carried out on tumbler 3
Rotate；
The bottom of two-dimensional movement platform 2 is fixed with strain force sensor 14, and the bottom of strain force sensor 14 is provided with
The ring flange 4 for contacting and fixing；
Encoder 5, fixing axle 6 and crossbeam 7 are additionally provided between the ring flange 4 and tumbler 3, fixing axle 6 is passed through
The centre bore of encoder 5 is simultaneously fixed thereto, and one end of fixing axle 6 is fixed on the endoporus of ring flange 4, and the other end is fixed on crossbeam 7
Central bore, be additionally provided with torsionspring 13 between crossbeam 7 and fixing axle 6, the one end of torsionspring 13 is arranged in crossbeam 7
Near intracardiac hole, the other end is arranged in the bottom draw-in groove of fixing axle 6；
The lower surface both sides of crossbeam 7 are symmetrically fixed with two strain-type friction force sensors 8, two strain-type frictional force sensings
Device 8 is respectively fixedly connected with two fixtures 9, is clamped with two upper friction members 10 on two fixtures 9 respectively；
Two upper friction members 10 are in contact with lower friction member 11；
Two-dimensional movement platform 2, strain force sensor 14, tumbler 3 are electrically connected with control system, and two strain-types rub
Wipe force snesor 8 electrically connect with signal testing analysis system, encoder 5 and calculating mechatronics.
Specifically, the tumbler 3 includes：
It is fixed on the first synchronous pulley 3A and the second synchronous pulley 3D on the base plate 1B of support 1；
Servomotor 3B is provided with first synchronous pulley 3A, servomotor 3B is connected by axle with the first synchronous pulley 3A
And drive the first synchronous pulley 3A to rotate；
First synchronous pulley 3A is connected by Timing Belt 3C and the second synchronous pulley 3D and is driven the second synchronous pulley 3D to turn
It is dynamic；
Workbench 3E is provided with second synchronous pulley 3D, the second synchronous pulley 3D is connected simultaneously with the axle of workbench 3E
Drive workbench 3E to rotate, lower friction member 11 is placed on workbench 3E；
Shaft supporting frame 3F is fixed on the base plate 1B of support 1 bearing for supporting the second synchronous pulley 3D and workbench 3E.
Specifically, the two-dimensional movement platform 2 includes：
It is fixed on the first stepper motor 2F of the top board 1A bottoms of support 1；
The vertical ball screw device 2E being connected by shaft coupling with the output shaft of the first stepper motor 2F；
Vertical slipper 2A on the feed screw nut of ball screw device 2E, vertical slipper 2A bottom are provided with horizontal swallow
Stern notch guide rail 2B, the first stepper motor 2F drive vertical slipper 2A in vertical support guide rail 2G by vertical ball screw device 2E
On vertically slide up and down；
Vertical support the guide rail 2G, vertical slipper 2A for being fixed on the top board 1A bottoms of support 1 are arranged on vertical support guide rail
On 2G；
The bottom of the cross sliding clock 2D on horizontal dovetail groove guide rail 2B, cross sliding clock 2D and strain force snesor 14
Connection；
It is fixed on the second stepper motor 2H of vertical slipper 2A sides；
The horizontal lead screw device 2C that one end is connected with the output shaft of the second stepper motor 2H by shaft coupling, horizontal lead screw dress
The feed screw nut for putting 2C is fixed with cross sliding clock 2D, and cross sliding clock 2D can be made by the feed screw nut for rotating horizontal lead screw device 2C
Moved in the horizontal direction on horizontal lead screw device 2C.
Specifically, the crossbeam 7 is connected with fixing axle 6 by angular contact ball bearing 12, the outer ring of angular contact ball bearing 12
With the central bore interference fit of crossbeam 7, its inner ring and the interference fit of fixing axle 6.
Specifically, the fixing axle 6 is locked with ring flange 4 by the first lock-screw 4A, with encoder 5 by the second lock
Tight screw 5A lockings.
Specifically, being fixed by Z-shape steel piece 5B between the encoder 5 and crossbeam 7.
Specifically, the strain-type friction force sensor 8 is unidirectional strain force sensor, range is 0~100N, sensitive
It is 0.3mv/V to spend, linearity 0.1N.
Specifically, the encoder 5 be absolute type encoder, range be 0~360 °, resolution ratio be 10 ", precision for ±
20 ", baud rate is 115.2Kb/s.
Specifically, the range of the strain force sensor 14 is 5~500N, precision is 0.025N.
The stick-slip experimental rig method that carries out viscosity sliding test provided using the present invention, its way is：
Control system control two-dimensional movement platform 2 is mobile with vertical direction in the horizontal direction to cause upper friction member 10 with
Friction member 11 is in contact, and control system controls tumbler 3 to be rotated with the speed of setting and direction so that upper friction member 10 is with
Relative friction is produced between friction member 11, the real-time monitoring of strain force sensor 14 and the He of friction member 10 is gathered in the process of the test
Normal load between lower friction member 11 feeds back to control system, and control system adjustment two-dimensional movement platform 2 causes upper friction member
The normal load of setting, two friction force sensors 9 is kept to detect two upper friction members 10 respectively between 10 and lower friction member 11
The suffered frictional force and friction force signal that will be collected delivers to data acquisition and analysis system；The upper friction member 10 of the collection of encoder 5
Angular displacement signal and angular displacement signal is delivered into computer.
During viscosity sliding test, when the frictional force that upper friction member 10 is subject to is more than the bullet that torsionspring 13 is produced by torsion
During spring force, upper friction member 10 is together with lower friction member 11 " viscous " and rotates, and upper friction member 10 and lower friction member 11 are without relative fortune
It is dynamic.With the rotation of upper friction member 10, the windup-degree of torsionspring 13 constantly increases, and the spring force that upper friction member 10 is subject to is not
Disconnected increase, when spring force is more than frictional force, upper friction member 10 starts to be slided on the surface of lower friction member 11, the He of upper friction member 10
Lower friction member 11 has relative motion.With the slip of upper friction member 10, the windup-degree of torsionspring 13 diminishes, and spring force is therewith
Reduce, when frictional force is more than spring force again, upper friction member 10 is together with lower friction member 11 again " viscous " and rotates, so circulation
Back and forth, the motion state of upper friction member 10 periodically alternately switches in " viscous ", " cunning ".
The friction dynamics for drawing and characterizing in stick-slip are analyzed with computer and data acquisition analysis system in the above method
Attribute testing result has：Normal direction force-time curve, friction force-time curve during stick-slip, angular displacement-time are bent
Line, angular speed-time graph, angular displacement-angular speed curve.Normal force, frictional force, angular displacement and angular speed are that stick-slip is moved
The most important basic data of mechanical analysis, thus obtained normal direction force-time curve, friction force-time curve, angular displacement-when
Half interval contour, angular speed-time graph, angular displacement-angular speed curve are the key datas of stick-slip dynamics research, can be analyzed
Genesis mechanism and influence factor during stick-slip.
Beneficial effects of the present invention are：The device that the present invention is provided can study the friction member of different materials, different normal direction
The Changing Pattern of frictional force, displacement, normal force, speed under the relevant parameters such as power, friction speed, so as to study the product of stick-slip
Life is managed and influence factor, and then reduces the vibration of mechanical system, improves the stability of a system and machining accuracy, and reduce stick-slip fortune
The problems such as frictional vibration noise for moving and inducing, provides theoretical foundation；The device that the present invention is provided is using two pins sample, i.e., two
Individual upper friction member, can avoid friction member and lower friction member from contacting uneven phenomenon, and then avoid contact with face stress distribution
It is uneven；Test material species of the present invention is relatively broad, including forged steel, cast iron, damping alloy, glass etc.；This experiment
Strain-type friction force sensor 8, encoder 5 and the Two-dimensional strain force snesor 14 that device is used belong to high-precision sensing
Device, it is high with certainty of measurement, the characteristics of stabilization carefully.
Brief description of the drawings
Fig. 1 is a kind of structural representation of stick-slip experimental rig that the present invention is provided.
Specific embodiment
The present invention is described further with specific embodiment below in conjunction with the accompanying drawings.
Apparatus structure schematic diagram in embodiments of the invention is as shown in figure 1, two dimension shifting is installed in the top board 1A bottoms of support 1
Dynamic platform 2, installs tumbler 3 on the base plate 1B of support 1, lower friction member 11 is arranged on tumbler 3, strain force sensor
14 bottoms for being fixed on two-dimensional movement platform 2, ring flange 4 is contacted and is fixed by screws in the bottom surface of strain force sensor 14
The bottom of strain force sensor 14, fixing axle 6 is fixed thereto through the centre bore of encoder 5, and one end is fixed on ring flange 4
Endoporus, the other end is fixed on the central bore of crossbeam 7；The one end of torsionspring 13 is arranged near the central bore of crossbeam 7, another
End is arranged in the bottom draw-in groove of fixing axle 6, and two strain-type friction force sensors 8 are symmetrically fixed on the lower surface both sides of crossbeam 7, is led to
Cross screw to fix, two fixtures 9 are fixedly connected with two strain-type friction force sensors 8 by screw respectively, two upper frictions
Part 10 is fixed by screws on two fixtures 9 respectively, and two upper friction members 10 are in contact with lower friction member 11, and two-dimensional movement is put down
Platform 2, strain force sensor 14, tumbler 3 are electrically connected with control system, two strain-type friction force sensors 8 and signal
Detecting and analysing system electrical connection, encoder 5 and calculating mechatronics.
Wherein, the first synchronous pulley 3A and the second synchronous pulley 3D in tumbler 3 are fixed on the base plate 1B of support 1
On, servomotor 3B is provided with the first synchronous pulley 3A, servomotor 3B is connected and driven by axle with the first synchronous pulley 3A
Dynamic first synchronous pulley 3A is rotated, and the first synchronous pulley 3A is connected by Timing Belt 3C and the second synchronous pulley 3D and driven second
Synchronous pulley 3D is rotated, and workbench 3E, the second synchronous pulley 3D and workbench 3E are provided with the second synchronous pulley 3D
Axle is connected and drives workbench 3E to rotate, and lower friction member 11 is placed on workbench 3E, and shaft supporting frame 3F is fixed on support 1
The bearing of the second synchronous pulley 3D and workbench 3E is supported on base plate 1B.
The first stepper motor 2F in two-dimensional movement platform 2 is fixed on the top board 1A bottoms of support 1, with the first stepper motor
The output shaft of 2F is arranged on below the first stepper motor 2F by the vertical ball screw device 2E that shaft coupling is connected, vertical slipper
2A is arranged on the feed screw nut of ball screw device 2E, and vertical slipper 2A bottoms are provided with horizontal dovetail groove guide rail 2B, vertically
Supporting guide 2G is fixed on the top board 1A bottoms of support 1, and vertical slipper 2A is arranged on vertical support guide rail 2G；Cross sliding clock 2D
On horizontal dovetail groove guide rail 2B, bottom and the strain thread connection of force snesor 14 of cross sliding clock 2D；Second stepping electricity
Machine 2H is fixed on the side of vertical slipper 2A；Horizontal lead screw device 2C one end passes through shaft coupling with the output shaft of the second stepper motor 2H
Device is connected, and feed screw nut and the cross sliding clock 2D of horizontal lead screw device 2C are fixed.
Crossbeam 7 is connected with fixing axle 6 by angular contact ball bearing 12, in the outer ring of angular contact ball bearing 12 and crossbeam 7
Intracardiac hole interference fit, its inner ring and the interference fit of fixing axle 6.
Fixing axle 6 is locked with ring flange 4 by the first lock-screw 4A, is locked by the second lock-screw 5A with encoder 5
Tightly.
Pass through Z-shape steel piece 5B screw attachments between encoder 5 and crossbeam 7.
In the present embodiment, strain-type friction force sensor 8 is unidirectional strain force sensor, and range is 0~100N, sensitive
It is 0.3mv/V to spend, linearity 0.1N；Encoder 5 is absolute type encoder, and range is 0~360 °, and resolution ratio is 10 ", precision is
± 20 ", baud rate is 115.2Kb/s；Strain force sensor 14 is Two-dimensional strain formula force snesor, and range is 5~500N, essence
It is 0.025N to spend.
The course of work of the present embodiment is as follows：
The installation of a, sample
Two upper samples 10 are separately mounted in two fixtures 9, and by screw in compression in the endoporus of fixture 9.Will
Lower sample 11 is arranged on workbench 3E by screw.
B, stick-slip experiment
By control system control two-dimensional movement platform 2 in the horizontal direction with vertical direction on movement, make strain-type power
Sensor 14 is fixed axle 6 and then compressing fixture 9 is so that keep the method for setting after upper friction member 10 and the contact of lower friction member 11
To load.Control system controls tumbler 3 to be rotated with the speed and direction of setting so that upper friction member 10 and lower friction
Relative friction is produced between part 11.
During viscosity sliding test, when the frictional force that upper friction member 10 is subject to is more than the bullet that torsionspring 13 is produced by torsion
During spring force, upper friction member 10 is together with lower friction member 11 " viscous " and rotates, and upper friction member 10 and lower friction member 11 are without relative fortune
It is dynamic.With the rotation of upper friction member 10, the windup-degree of torsionspring 13 constantly increases, and the spring force that upper friction member 10 is subject to is not
Disconnected increase, when spring force is more than frictional force, upper friction member 10 starts to be slided on the surface of lower friction member 11, the He of upper friction member 10
Lower friction member 11 has relative motion.With the slip of upper friction member 10, the windup-degree of torsionspring 13 diminishes, and spring force is therewith
Reduce, when frictional force is more than spring force again, upper friction member 10 is together with lower friction member 11 again " viscous " and rotates, so circulation
Back and forth, the motion state of upper friction member 10 periodically alternately switches in " viscous ", " cunning ".
C, the data acquisition of stick-slip experiment
While stick-slip experiment is carried out, the real-time monitoring of Two-dimensional strain formula force snesor 14 simultaneously gathers stick-slip
Normal load, and normal direction force signal is delivered into computer.Two friction force sensors 9 are tested suffered by two upper friction members 10 respectively
Frictional force, and friction force signal is delivered into data acquisition and analysis system.The angular displacement signal of the upper friction member 10 of the collection of encoder 5,
And angular displacement signal is delivered into computer.
In viscosity sliding test, normal load during the 14 real-time monitoring stick-slip of force snesor of Two-dimensional strain formula sends number to
According to control system, real-time feedback control is carried out to the vertical position of two-dimensional movement platform 2 by control system, it is ensured that upper friction member 10
And the normal load between lower friction member 11 is in constant set-point all the time.
Upper friction member 10 and fixture 9, crossbeam 7, encoder 5 are and are rigidly connected, the anglec of rotation and the volume of upper friction member 10
The anglec of rotation of code device 5 is identical, while viscosity sliding test is carried out, the angle position of upper friction member 10 can be gathered by encoder 5
Shifting signal.The strain-type friction force sensor 8 for being arranged on the two ends of crossbeam 7 simultaneously measures two frictional force of upper friction member 10 respectively
Signal.
Given different test parameters, you can carry out the stick-slip experiment under different operating modes.For different shape and chi
Very little upper friction member 10, experiment can be completed using corresponding fixture 9.
This experimental rig makes strain force sensor 14 be fixed axle 6 by control system control two-dimensional movement platform 2
And then compressing fixture 9, and by the Real-time Feedback of strain force sensor 14, it is permanent between upper friction member 10 and lower friction member 11
Surely any normal load in the range ability of strain force sensor 14 of setting is applied.In addition, control system is by rotating
The lower friction member 11 of the control of device 3 rotates at different rates.
Stick-slip is one kind " motion-static-move again-quiet again caused because static and dynamic friction coefficient numerical value is different
Friction phenomenon only ", in this experimental rig, with the difference of the motion state of upper friction member 10, the rotation of torsionspring 13
The difference of angle, the motion state of friction member 10 is in the middle cyclically-varying of both " viscous ", " cunning " in realization, and is strained by two
Formula friction force sensor 8 gathers two friction force signals of upper friction member 10 respectively, and the collection angular displacement signal of encoder 5 goes forward side by side one
Step obtains angular velocity signal, the collection normal direction force signal of Two-dimensional strain formula force snesor 14.
Strain-type friction force sensor 8, encoder 5 and the Two-dimensional strain force snesor 14 that this experimental rig is used belong to
It is high with certainty of measurement in high-precision sensor, the characteristics of good stability.
This experimental rig can effectively avoid friction member 10 and lower friction member 11 from contacting using two upper friction members 10
Uneven phenomenon, and then it is uneven to avoid contact with face stress distribution, can obtain more accurately frictional force, angular displacement, normal direction
The signals such as power preferably study stick-slip tribological property.
This experimental rig can study friction force signal, the angle position during the stick-slip of various differentiated friction auxiliary materials
The Changing Pattern of shifting signal, normal direction force signal, including：Forged steel, cast iron, damping alloy, glass etc., be related to test material species compared with
For extensive.
One of ordinary skill in the art can make various not departing from originally according to these technical inspirations disclosed by the invention
Other various specific deformations and combination of essence are invented, these deformations and combination are still within the scope of the present invention.
Claims (9)
1. a kind of stick-slip experimental rig, including support (1), top board (1A) bottom of support (1) is provided with two-dimensional movement and puts down
Platform (2), tumbler (3) is provided with the base plate (1B) of support (1), it is characterised in that
Lower friction member (11), speed and direction that lower friction member (11) sets according to tumbler (3) are installed on tumbler (3)
Rotated；
Two-dimensional movement platform (2) bottom is fixed with strain force sensor (14), and the bottom of strain force sensor (14) is set
Have and contact and fixed ring flange (4)；
Encoder (5), fixing axle (6) and crossbeam (7), fixing axle are additionally provided between the ring flange (4) and tumbler (3)
(6) through the centre bore of encoder (5) and fixed thereto, one end of fixing axle (6) is fixed on the endoporus of ring flange (4), another
End is fixed on the central bore of crossbeam (7), and torsionspring (13), torsionspring are additionally provided between crossbeam (7) and fixing axle (6)
(13) one end is arranged near the central bore of crossbeam (7), and the other end is arranged in the draw-in groove of fixing axle (6) bottom；
Crossbeam (7) lower surface both sides are symmetrically fixed with two strain-type friction force sensors (8), two strain-type frictional force sensings
Device (8) is respectively fixedly connected with two fixtures (9), is clamped with two upper friction members (10) on two fixtures (9) respectively；
Two upper friction members (10) are in contact with lower friction member (11)；
Two-dimensional movement platform (2), strain force sensor (14), tumbler (3) are electrically connected with control system, two strain-types
Friction force sensor (8) is electrically connected with signal testing analysis system, encoder (5) with calculate mechatronics.
2. stick-slip experimental rig according to claim 1, it is characterised in that the tumbler (3) includes：
It is fixed on the first synchronous pulley (3A) and the second synchronous pulley (3D) on the base plate of support (1) (1B)；
Servomotor (3B) is provided with first synchronous pulley (3A), servomotor (3B) passes through axle and the first synchronous pulley (3A)
Connect and drive the first synchronous pulley (3A) to rotate；
First synchronous pulley (3A) is connected and drives the second synchronous pulley by Timing Belt (3C) and the second synchronous pulley (3D)
(3D) is rotated；
Workbench (3E) is provided with second synchronous pulley (3D), the second synchronous pulley (3D) connects with the axle of workbench (3E)
Connect and drive workbench (3E) to rotate, lower friction member (11) is fixed in the upper surface of workbench (3E)；
Shaft supporting frame (3F) is fixed on the base plate of support (1) (1B) and supports the second synchronous pulley (3D) and workbench (3E)
Bearing.
3. stick-slip experimental rig according to claim 1, it is characterised in that the two-dimensional movement platform (2) includes：
It is fixed on first stepper motor (2F) of top board (1A) bottom of support (1)；
The vertical ball screw device (2E) being connected by shaft coupling with the output shaft of the first stepper motor (2F)；
Vertical slipper (2A) on the feed screw nut of ball screw device (2E), vertical slipper (2A) bottom is provided with level
Dovetail groove guide rail (2B)；
The vertical support guide rail (2G) of top board (1A) bottom of support (1) is fixed on, vertical slipper (2A) is arranged on vertical support
On guide rail (2G), the first stepper motor (2F) drives vertical slipper (2A) in vertical support by vertical ball screw device (2E)
Vertically slided up and down on guide rail (2G)；
On horizontal dovetail groove guide rail (2B) and the level that can in the horizontal direction be slided on horizontal dovetail groove guide rail (2B)
Sliding block (2D), the bottom of cross sliding clock (2D) is connected with strain force snesor (14)；
It is fixed on second stepper motor (2H) of vertical slipper (2A) side；
The horizontal lead screw device (2C) that one end is connected with the output shaft of the second stepper motor (2H) by shaft coupling, horizontal lead screw dress
The feed screw nut for putting (2C) is fixed with cross sliding clock (2D), and level can be made by the feed screw nut for rotating horizontal lead screw device (2C)
Sliding block (2D) is moved in the horizontal direction on horizontal lead screw device (2C).
4. stick-slip experimental rig according to claim 1, it is characterised in that the crossbeam (7) is led to fixing axle (6)
Angular contact ball bearing (12) connection, the outer ring of angular contact ball bearing (12) and the central bore interference fit of crossbeam (7) are crossed, in it
Circle and fixing axle (6) interference fit.
5. stick-slip experimental rig according to claim 1, it is characterised in that the fixing axle (6) and ring flange (4)
Locked by the first lock-screw (4A), locked by the second lock-screw (5A) with encoder (5).
6. a kind of stick-slip experimental rig according to claim 1, it is characterised in that the encoder (5) and crossbeam
(7) Z-shape steel piece (5B) screw attachment is passed through between.
7. a kind of stick-slip experimental rig according to claim 1, it is characterised in that the strain-type frictional force sensing
Device (8) is unidirectional strain force sensor, and range is 0~100N, and sensitivity is 0.3mv/V, linearity 0.1N.
8. a kind of stick-slip experimental rig according to claim 1, it is characterised in that the encoder (5) is absolute
Formula encoder, range is 0~360 °, and resolution ratio is 10 ", precision is ± 20 ", baud rate is 115.2Kb/s.
9. a kind of stick-slip experimental rig according to claim 1, it is characterised in that the strain force sensor
(14) range is 5~500N, and precision is 0.025N.
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| CN108195538A (en) * | 2018-02-08 | 2018-06-22 | 西南交通大学 | A kind of testing stand for being used to study frictional vibration energy recovery efficiency |
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| CN109883700A (en) * | 2019-03-27 | 2019-06-14 | 武汉理工大学 | Water lubricating rubber tail bearing frictional vibration test macro and its method |
| CN112577892A (en) * | 2020-12-11 | 2021-03-30 | 中国汽车工程研究院股份有限公司 | Rack and pinion type loading compression bar of material friction abnormal sound test bed |
| CN112710602A (en) * | 2020-12-24 | 2021-04-27 | 中国汽车工程研究院股份有限公司 | Material friction abnormal sound test bed with three-dimensional force sensor |
| CN112730215A (en) * | 2020-12-24 | 2021-04-30 | 中国汽车工程研究院股份有限公司 | Material friction abnormal sound test bed with strain gauge sensor |
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| CN112577892A (en) * | 2020-12-11 | 2021-03-30 | 中国汽车工程研究院股份有限公司 | Rack and pinion type loading compression bar of material friction abnormal sound test bed |
| CN112577892B (en) * | 2020-12-11 | 2024-03-12 | 中国汽车工程研究院股份有限公司 | Gear rack type loading compression bar of material friction abnormal sound test bed |
| CN112710602A (en) * | 2020-12-24 | 2021-04-27 | 中国汽车工程研究院股份有限公司 | Material friction abnormal sound test bed with three-dimensional force sensor |
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