CN108827870A - A kind of friction test device and friction parameter test method of achievable vacuum microgravity environment simulation - Google Patents
A kind of friction test device and friction parameter test method of achievable vacuum microgravity environment simulation Download PDFInfo
- Publication number
- CN108827870A CN108827870A CN201810270396.XA CN201810270396A CN108827870A CN 108827870 A CN108827870 A CN 108827870A CN 201810270396 A CN201810270396 A CN 201810270396A CN 108827870 A CN108827870 A CN 108827870A
- Authority
- CN
- China
- Prior art keywords
- friction
- test specimen
- friction test
- stop sleeve
- slide rail
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
Abstract
The present invention relates to a kind of friction test device of achievable vacuum microgravity environment simulation, which can simulate vacuum and microgravity environment simultaneously, carry out friction test in the present context.Whole device is placed in vacuum tank 10, the gravity of friction test specimen 8 is offset by suspension method, electromechanical actuator 1 drives stop sleeve 5 to make uniform motion, so that relative motion occurs for friction test specimen 8 and friction surface 6, before measurement frictional force, first friction test specimen 8 is replaced to measure the resistance resultant force that other component generates in motion process with the box nut of equal quality, resistance resultant force is subtracted with total frictional force again and is averaged the frictional force as the pair that rubs, and the ratio of frictional force and normal load is coefficient of friction under this condition.The device can carry out the friction test under vacuum microgravity environment under differentiated friction pair, different texture surface, different speed of related movement and different loads.The present invention have the characteristics that structure it is simple, not by time restriction, alterability is strong, high reliablity and at low cost.
Description
Technical field
The invention belongs to mechanical engineering technical fields, and in particular to a kind of friction of achievable vacuum microgravity environment simulation
Experimental rig and friction parameter test method based on this device, the detection applied to different surfaces coefficient of friction.
Background technique
NASA's studies have shown that the failure of the space mechanism component of significant proportion is related with space friction, reduces space machine
The frictional force of structure relative motion surface is of great significance to the normal operation for ensuring spacecraft and lengthening the life.Spacecraft is in space
In vacuum microgravity environment, there are biggish differences for andfrictional conditions and ground environment, thus need in ground simulation vacuum
Microgravity environment carries out the friction under differentiated friction pair, different surfaces situation, different speed of related movement and different loads
Test, certain theoretical foundation is provided for space friction problem, to reduce due to Spacecraft malfunction caused by the friction of space.
Consulting literatures find that common space microgravity environment ground simulation method has：Fall tower method, parabolic flight method, suspention
Method, water float glass process and gas floatation process, due to fall Ta Fa and parabolic flight method involve great expense and system complex, resistance of the water float glass process vulnerable to water
The influence of power and turbulent flow and test specimen need to do special water-proofing treatment and the deficiencies of gas floatation process are affected to andfrictional conditions,
The present invention, come stimulated microgravity, mainly balances the weight of friction test specimen using suspension method by the vertical tension of elastic lifting rope
Power, this method have the advantages that structure is simple and convenient to operate and at low cost.
It finds by literature search, a kind of patent of Patent No. 201310415789.2 " space microgravity environment ground face mould
Quasi- experimental rig " adjusts the tension of lifting rope in real time using motor to carry out gravity compensation, to realize that microgravity is simulated, still
The device not can be carried out the friction test under the environment.In addition, there is now the simulation that many systems carry out microgravity environment, and mesh
Before there is no friction test device under the environment.
Summary of the invention
It is an object of that present invention to provide a kind of friction test device of achievable vacuum microgravity environment simulation, the device energy
Enough while vacuum and microgravity environment are simulated, and friction test can be carried out in the present context, is able to carry out different loads, different phases
To the friction test of movement velocity, differentiated friction auxiliary material and different texture surface.
The technical scheme is that：A kind of friction test device of achievable vacuum microgravity environment simulation, including one
A friction test platform being placed in vacuum tank, which offsets friction test specimen gravity by suspension method, specifically, described rub
Experimental provision is wiped mainly by electromechanical actuator 1, high-precision pull pressure sensor 2, line slide rail 3, guide rail slide block 4, stop sleeve
5, friction surface 6, elastic lifting rope 7, friction test specimen 8, rack 9, vacuum tank 10, gasket 11, loading spring 12 and pressure sensor
13；Package unit is placed in vacuum tank 10, and the rotary motion of motor is converted into linear motion output by electromechanical actuator 1,
Output end connects high-precision tension-compression sensor 2, and high-precision tension-compression sensor 2 is connect with the pedestal of stop sleeve 5, stop sleeve 5
It is fixed on the guide rail slide block 4 of line slide rail 3, line slide rail 3 is installed in rack 9；Rack 9 is fixed in elastic 7 upper end of lifting rope,
Lower end is connected with stop sleeve 5, and the gravity for offsetting friction test specimen 8 influences, equipped with loading spring 12, pad in stop sleeve 5
Piece 11 and pressure sensor 13, loading spring 12 be used for friction test specimen 8 apply load, 13 both ends of pressure sensor respectively with rub
Part 8 is wiped to be connected with gasket 11, for measuring the normal load of friction test specimen 8, the one end for the test specimen 8 that rubs and stop sleeve 5
For clearance fit, the friction surface 6 contacted with friction test specimen 8 is installed in rack 9.When work, stop sleeve 5 is in electromechanical actuation
It is moved under the driving of device 1 along 3 direction of line slide rail, to make friction test specimen 8 that phase occur with friction surface 6 under external load function
To movement.
Based on the method that above-mentioned apparatus carries out friction parameter test, include the following steps：
Step 1：Before the frictional force of measurement friction test specimen 8 and friction surface 6, elastic lifting rope 7 and line slide rail are first measured
The 3 resistance resultant forces generated, detailed process is as follows：Friction test specimen 8 is not installed, with the equal box nut of friction 8 mass of test specimen, and
The external screw thread of stop sleeve 5 screws, and controls electromechanical actuator 1 with displacement model uniform motion, records one group of high-precision tension and compression and pass
The registration F of sensor 21, the as resistance resultant force that generates of elastic string 6 and line slide rail 3；
Step 2：Box nut is unloaded, the installation friction test specimen 8 in stop sleeve 5, using control mould identical with step 1
Formula obtains the registration F of one group of high-precision tension-compression sensor 22；
Step 3：The registration value F that step 2 obtains2Subtract the corresponding resulting resistance resultant force F of step 11And ask it average
It is worth to get the frictional force of friction test specimen 8 and friction surface 6 is arrived；The registration of pressure sensor 13 is the big of normal load simultaneously
Small, the ratio of frictional force and normal load is coefficient of friction under this condition.
Further, it is also possible to change normal load by replacement loading spring 12, by adjusting the operation of electromechanical actuator 1
Speed changes different friction pair materials or different friction texture surfaces to study normal load, speed of related movement, friction
The influence of auxiliary material and friction surface situation to coefficient of friction.
The present invention have the characteristics that structure it is simple, not by time restriction, alterability is strong, high reliablity and at low cost.
Detailed description of the invention
Fig. 1 is the axonometric drawing of the friction test device of achievable vacuum microgravity environment simulation of the present invention
Fig. 2 is the axonometric drawing of other components of the present invention in addition to vacuum tank
Fig. 3 is the axonometric drawing of other components of the present invention in addition to vacuum tank and rack
Fig. 4 is the sectional view of friction test specimen, stop sleeve and stop sleeve inner body
Wherein：1- electromechanical actuator；2- high-precision pull pressure sensor；3- line slide rail；4- guide rail slide block；5- support sleeve
Cylinder；6- friction surface；7- elasticity lifting rope；8- friction test specimen；9- rack；10- vacuum tank；11- gasket；12- loading spring；13-
Pressure sensor.
Specific embodiment
The present invention is explained in detail with reference to the accompanying drawing：
A kind of friction test device of achievable vacuum microgravity environment simulation, the friction test platform are placed in vacuum tank 10
In, and friction test specimen gravity is offset by suspension method.It is characterized in that：Testing stand mainly includes electromechanical actuator 1, high-precision
Spend pull pressure sensor 2, line slide rail 3, guide rail slide block 4, stop sleeve 5, friction surface 6, elastic lifting rope 7, friction test specimen 8,
Rack 9, vacuum tank 10, gasket 11, loading spring 12 and pressure sensor 13 are constituted.Package unit is placed in vacuum tank 10,
Electromechanical actuator 1 is connect with high-precision tension-compression sensor 2, and high-precision tension-compression sensor 2 is connect with the pedestal of stop sleeve 5, branch
Support set cylinder 5 is fixed on the guide rail slide block 4 of line slide rail 3, and elastic 7 upper end of lifting rope is fixed in rack 9, lower end and stop sleeve
5 connections, are equipped with loading spring 12, gasket 11 and pressure sensor 13 in stop sleeve 5,13 both ends of pressure sensor respectively with rub
It wipes part 8 to be connected with gasket 11, the one end for the test specimen 8 that rubs and stop sleeve 5 are clearance fit, friction surface 6 and line slide rail 3
It is mounted in rack 9, the end that furthermore stop sleeve 5 and friction test specimen 8 cooperate is machined with external screw thread.
The rotary motion of motor is converted into moving along a straight line by the electromechanical actuator 1, and stop sleeve 5 is in electromechanical actuator
It is moved under 1 driving, makes friction test specimen 8 that relative motion occur with friction surface 6 under external load function.
The high-precision tension-compression sensor 2 is used to measure the tangential friction force of direction of relative movement.
The elastic lifting rope 7 is connected to stop sleeve 5, for balanced support sleeve 5 and its inside loading spring 12,
The gravity of gasket 11, pressure sensor 13 and the friction of stop sleeve end test specimen 8, with stimulated microgravity.
The pressure sensor 13 is used to measure the normal force that loading spring 12 is applied to friction test specimen 8.
The course of work of the invention is as follows：Test measurement rubs test specimen 8 with before the frictional force of friction surface 6, first measures bullet
Property lifting rope 7 and line slide rail 3 generate resistance resultant force.Friction test specimen 8 is not installed, using the lid equal with friction 8 mass of test specimen
Nut and 5 external screw thread of stop sleeve screw, and control electromechanical actuator 1 with displacement model uniform motion, high-precision tension-compression sensor 2
Registration be resistance resultant force that elastic lifting rope 6 is generated with line slide rail 3.Box nut is unloaded, installation rubs in 5 end of stop sleeve
Part 8 is wiped, the registration of high-precision tension-compression sensor 2 is obtained using identical control model, the registration obtained at this time subtracts front
Resulting resistance resultant force, the frictional force of as rub test specimen 8 and friction surface 6.Although electromechanical actuator 1 is at the uniform velocity mode fortune
It is dynamic, but the meeting of spring lifting rope 7 run-off the straight in motion process, thus the test specimen 8 that rubs is covered with 6 relative motion of friction surface and installation
The sensor registration for each resistance resultant force that nut obtains all is that real-time change, the two are subtracted each other and be averaged at any time
Obtain the secondary frictional force of friction.The registration of pressure sensor 13 is the normal load of friction test specimen 8, frictional force and normal load
Ratio be the coefficient of friction of the friction pair in vacuum microgravity environment.
Further, it is also possible to change normal load by replacement loading spring 12, by adjusting the operation of electromechanical actuator 1
Speed changes the modes such as different friction pair materials or different grain surfaces to study normal load, speed of related movement, rub
Wipe the influence of auxiliary material and grain surface, various different factors to coefficient of friction.
Claims (2)
1. a kind of friction test device of achievable vacuum microgravity environment simulation, is tried including a friction being placed in vacuum tank
Platform is tested, which offsets friction test specimen gravity by suspension method, specifically, the frictional experiment device is mainly made by electromechanics
Dynamic device 1, high-precision pull pressure sensor 2, line slide rail 3, guide rail slide block 4, stop sleeve 5, friction surface 6, elastic lifting rope 7,
Rub test specimen 8, rack 9, vacuum tank 10, gasket 11, loading spring 12 and pressure sensor 13；Package unit is placed on vacuum tank
In 10, the rotary motion of motor is converted into linear motion output by electromechanical actuator 1, and output end connects high-precision tension and compression sensing
Device 2, high-precision tension-compression sensor 2 are connect with the pedestal of stop sleeve 5, and stop sleeve 5 is fixed on the guide rail slide block of line slide rail 3
On 4, line slide rail 3 is installed in rack 9；Rack 9 is fixed in elastic 7 upper end of lifting rope, and lower end is connected with stop sleeve 5, is used for
The gravity for offsetting friction test specimen 8 influences, and loading spring 12, gasket 11 and pressure sensor 13 are housed in stop sleeve 5, loads bullet
Spring 12 is used to apply load to friction test specimen 8, and 13 both ends of pressure sensor are connected with friction test specimen 8 and gasket 11 respectively, uses
In the normal load of measurement friction test specimen 8, the one end for the test specimen 8 that rubs and stop sleeve 5 are clearance fit, are connect with friction test specimen 8
The friction surface 6 of touching is installed in rack 9；When work, stop sleeve 5 is under the driving of electromechanical actuator 1 along 3 side of line slide rail
To movement, to make friction test specimen 8 that relative motion occur with friction surface 6 under external load function.
2. being included the following steps based on the method that device as described in claim 1 carries out friction parameter test：
Step 1：Before the frictional force of measurement friction test specimen 8 and friction surface 6, first measures elastic lifting rope 7 and produced with line slide rail 3
Raw resistance resultant force, detailed process is as follows：Friction test specimen 8 is not installed, with the box nut equal with friction 8 mass of test specimen, and branch
The external screw thread of support set cylinder 5 screws, and controls electromechanical actuator 1 with displacement model uniform motion, records one group of high-precision tension and compression sensing
The registration F of device 21, the as resistance resultant force that generates of elastic string 6 and line slide rail 3；
Step 2：Box nut is unloaded, the installation friction test specimen 8 in stop sleeve 5, using control model identical with step 1,
Obtain the registration F of one group of high-precision tension-compression sensor 22；
Step 3：The registration value F that step 2 obtains2Subtract the corresponding resulting resistance resultant force F of step 11And be averaged, i.e.,
Obtain the frictional force of friction test specimen 8 and friction surface 6；The registration of pressure sensor 13 is the size of normal load simultaneously, is rubbed
The ratio of wiping power and normal load is coefficient of friction under this condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810270396.XA CN108827870B (en) | 2018-03-29 | 2018-03-29 | Friction test device capable of realizing vacuum microgravity environment simulation and friction parameter test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810270396.XA CN108827870B (en) | 2018-03-29 | 2018-03-29 | Friction test device capable of realizing vacuum microgravity environment simulation and friction parameter test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108827870A true CN108827870A (en) | 2018-11-16 |
| CN108827870B CN108827870B (en) | 2020-11-06 |
Family
ID=64155330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810270396.XA Expired - Fee Related CN108827870B (en) | 2018-03-29 | 2018-03-29 | Friction test device capable of realizing vacuum microgravity environment simulation and friction parameter test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108827870B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112179841A (en) * | 2020-10-04 | 2021-01-05 | 西北工业大学 | Collision friction test device and method capable of simulating vacuum microgravity environment |
| CN113848179A (en) * | 2021-09-23 | 2021-12-28 | 北京理工大学 | Experimental device for measuring slippage or separation movement between contact surfaces |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010117233A (en) * | 2008-11-13 | 2010-05-27 | Kinugawa Rubber Ind Co Ltd | Friction testing device |
| CN103466109A (en) * | 2013-09-05 | 2013-12-25 | 哈尔滨工业大学 | Space microgravity environment ground simulation experiment device |
| CN105954017A (en) * | 2016-05-10 | 2016-09-21 | 西北工业大学 | Planetary roller screw pair friction torque measurement device |
| CN106404579A (en) * | 2016-10-17 | 2017-02-15 | 华南理工大学 | Friction-wear testing machine capable of realizing variable gravity orientation and testing method |
| CN107101901A (en) * | 2016-02-19 | 2017-08-29 | 中国石油化工股份有限公司 | A kind of reciprocating friction abrasion test device and method |
| CN107356524A (en) * | 2017-06-20 | 2017-11-17 | 西安理工大学 | The frictional wear test device of wear extent on-line measurement under a kind of vacuum environment |
| CN107817185A (en) * | 2017-11-22 | 2018-03-20 | 华南理工大学 | One kind falls tower frictional wear test device and method |
-
2018
- 2018-03-29 CN CN201810270396.XA patent/CN108827870B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010117233A (en) * | 2008-11-13 | 2010-05-27 | Kinugawa Rubber Ind Co Ltd | Friction testing device |
| CN103466109A (en) * | 2013-09-05 | 2013-12-25 | 哈尔滨工业大学 | Space microgravity environment ground simulation experiment device |
| CN107101901A (en) * | 2016-02-19 | 2017-08-29 | 中国石油化工股份有限公司 | A kind of reciprocating friction abrasion test device and method |
| CN105954017A (en) * | 2016-05-10 | 2016-09-21 | 西北工业大学 | Planetary roller screw pair friction torque measurement device |
| CN106404579A (en) * | 2016-10-17 | 2017-02-15 | 华南理工大学 | Friction-wear testing machine capable of realizing variable gravity orientation and testing method |
| CN107356524A (en) * | 2017-06-20 | 2017-11-17 | 西安理工大学 | The frictional wear test device of wear extent on-line measurement under a kind of vacuum environment |
| CN107817185A (en) * | 2017-11-22 | 2018-03-20 | 华南理工大学 | One kind falls tower frictional wear test device and method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112179841A (en) * | 2020-10-04 | 2021-01-05 | 西北工业大学 | Collision friction test device and method capable of simulating vacuum microgravity environment |
| CN113848179A (en) * | 2021-09-23 | 2021-12-28 | 北京理工大学 | Experimental device for measuring slippage or separation movement between contact surfaces |
| CN113848179B (en) * | 2021-09-23 | 2023-11-10 | 北京理工大学 | Experimental device for measuring sliding or separating movement between contact surfaces |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108827870B (en) | 2020-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107179252B (en) | A kind of typical secondary skimming wear experimental machine and the test method of rubbing of change gravity orientation | |
| CN103048136B (en) | High and low temperature environment service life testing machine for joint bearing | |
| CN106314832B (en) | More flexible cantilever beam coupled vibrations measure and control devices and method based on single-axle air bearing table | |
| RU2401241C2 (en) | Device to sling parts with force compensation and lifting system therewith | |
| CN111307437B (en) | Rotary tribology behavior simulation test bed for realizing vibration decoupling | |
| CN108827870A (en) | A kind of friction test device and friction parameter test method of achievable vacuum microgravity environment simulation | |
| CN104803015B (en) | Large lift air supporting high-precision gravity relief arrangement | |
| CN107356524A (en) | The frictional wear test device of wear extent on-line measurement under a kind of vacuum environment | |
| CN106885746B (en) | Wide-frequency response large-stroke experimental device for rubber fatigue performance test | |
| CN102590002A (en) | Tangential final-motion frictional wear test equipment | |
| CN107817185A (en) | One kind falls tower frictional wear test device and method | |
| CN106323547B (en) | Rotary axis rotary inertia in-situ measurement device | |
| CN204405513U (en) | For the device of low-speed heave-load water lubriucated bearing friction coefficient measurement | |
| CN107991045B (en) | Line contact slide frictional vibration noise fest platform | |
| CN206132381U (en) | Shock absorber rubber bush fatigue test stand | |
| CN113942666B (en) | Near-zero stiffness supporting device for zero gravity environment simulation | |
| CN209264232U (en) | A kind of overhanging golden tool string wind excited vibration Wearing Simulated Test platform | |
| CN202522494U (en) | Tangential fretting friction abrasion test device | |
| CN109406083B (en) | Suspension string hardware wind excitation vibration abrasion simulation test platform | |
| CN113942667B (en) | Micro-low gravity environment simulation method and device | |
| CN114252362B (en) | Double-shaft loading fretting wear testing machine | |
| CN113928605B (en) | Micro-low gravity environment simulation device and method for variable mass load | |
| CN112729734B (en) | Method for measuring transfer characteristics of series-type vibration isolator | |
| RU2396530C1 (en) | Aircraft strength testing method and device for realising said method | |
| CN209069497U (en) | A kind of calibrating installation of aeroengine thrust measurement test bay |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201106 |