CN111638126A - Experimental device for testing friction self-excited vibration of rubber material - Google Patents
Experimental device for testing friction self-excited vibration of rubber material Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 36
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- 239000011521 glass Substances 0.000 claims description 35
- 229910000838 Al alloy Inorganic materials 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 12
- 238000002474 experimental method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000003912 environmental pollution Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0258—Non axial, i.e. the forces not being applied along an axis of symmetry of the specimen
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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Abstract
The invention relates to a rubber material friction self-excited vibration testing device and a rubber material surface friction performance testing method. The device comprises a base, a portal frame, a speed power driving device, a pressure applying device, a bearing rubber appliance and a high-speed camera device; the method is characterized in that: the two ends of the portal frame are arranged on the base, one end of the speed power driving device is arranged on the base, one end of the pressure applying device is arranged on the portal frame, the other end of the pressure applying device is arranged on the bearing appliance bearing rubber, the force required by the rubber under different conditions is applied, and the speed power driving device drives the bearing rubber appliance to move. The speed required by the rubber in sliding is controlled by adjusting the torque of the servo motor, the pressure applied to the rubber is controlled by adjusting the torque of the telescopic motor, and the three-dimensional force sensor can measure the pressure applied to the rubber in real time and the friction force and the lateral force applied to the rubber in the sliding process.
Description
Technical Field
The invention relates to an experimental device platform for testing friction self-excited vibration of a rubber material, and belongs to the technical field of material mechanical property testing.
Background
In human life and production, various mechanical devices with different structures and different functions are combined by a plurality of parts which are mutually contacted and connected together. The rubber part is used as one of important components and can generate self-excited vibration when contacting and rubbing with a hard material, such as a tire tread, an automobile rubber wiper, a dynamic sealing rubber ring, an artificial joint and the like. The frictional vibration can cause abnormal abrasion of materials, instability of the structure, sealing leakage, noise and other adverse effects, seriously influences the service performance and service life of machinery, and simultaneously causes environmental pollution. Therefore, the frictional vibration characteristic is one of important performance indexes which must be tested in the development process of the rubber material.
However, the existing rubber friction testing device only focuses on measuring the friction coefficient, and cannot simultaneously acquire the deformation condition of the contact surface and the lateral surface in the friction vibration process of the rubber material, which is not beneficial to analyzing the generation reason of the friction vibration of the rubber material, the published patent CN201810396062.7 uses an L-shaped arm structure to connect the sensors, the L-shaped arm is very easy to deform during friction, and the test result is inaccurate. Meanwhile, the traditional rubber material friction testing device controls applied pressure through a manual displacement table, and has the defects of large error and low experimental precision. Therefore, it is necessary to provide a simple, stable, high-precision, low-cost experimental device platform for testing the friction self-excited vibration of rubber materials, which is capable of measuring 3-direction forces (friction force, lateral force and normal force), and better tests the actual friction vibration characteristics of the rubber materials.
Disclosure of Invention
The invention mainly solves the existing problems, provides the experimental device platform for testing the friction self-excited vibration of the rubber material, which has the advantages of simple and stable structure, high precision and low cost, and can test the 3-direction force, and better test the actual friction vibration characteristic of the rubber material. The device not only tests the vibration of 3 directional forces in the friction process of the rubber material, but also adopts two high-speed cameras to record the deformation conditions of the rubber contact surface and the side surface respectively. In addition, the device only adopts a three-dimensional force sensor, and simultaneously uses a portal frame structure and an electric displacement table, thereby not only reducing the test procedures and improving the test precision, but also greatly saving the cost of the experimental device.
The technical scheme for solving the problems is as follows:
a rubber material friction self-excited vibration testing device comprises a base, a portal frame, a speed power driving device, a pressure applying device, a bearing rubber appliance and a high-speed camera device; the two ends of the portal frame are arranged on the base, one end of the speed power driving device is arranged on the base, one end of the pressure applying device is arranged on the portal frame, the other end of the pressure applying device is arranged on the bearing appliance bearing rubber, the force required by the rubber under different conditions is applied, and the speed power driving device drives the bearing rubber appliance to move.
Further, the pressure applying device has a telescopic motor for adjusting the pressure applied to the rubber. The pressure applying device is provided with a three-dimensional force sensor, the glass hemisphere is fixed on the three-dimensional force sensor, and the pressure applied to the rubber is detected through the three-dimensional force sensor.
Furthermore, the bearing rubber appliance is arranged on a double-guide-rail sliding rail which is arranged on the base. The speed power driving device drives the bearing rubber appliance to move through the driving connecting device. The rubber bearing device comprises a stepped aluminum alloy plate with a rectangular hollow groove structure, and a glass plate is laid in the stepped aluminum alloy plate, so that a rubber block is placed on the glass for testing. During testing, 3-direction force vibration of the rubber is transmitted to the glass hemisphere and recorded by the three-dimensional force sensor.
And the two high-speed cameras are respectively arranged below the glass plate and on one side of the glass plate, and the change of the contact surface and the side surface of the rubber block and the glass plate is recorded in real time.
The invention also requires a method for testing the surface friction performance of the rubber material, which is used for testing by using the device for testing the surface friction performance of the rubber material, and comprises the following steps:
the magnitude of pressure applied to the rubber block to be tested is adjusted through a pressure applying device, and the pressure applied to the rubber block is detected through a three-dimensional force sensor;
the speed power driving device drives the bearing rubber appliance to move, so that the rubber block is driven to move;
recording 3-direction force vibration of the rubber material during friction in real time through a three-dimensional force sensor;
and recording the changes of the contact surface and the side surface of the rubber block and the glass plate in real time by two high-speed cameras.
An experimental device for testing the mechanical property of the surface of rubber comprises a base, a portal frame, a rubber bearing appliance, a glass hemisphere, a three-dimensional force sensor, a speed power driving device, a double-guide-rail sliding rail, a high-speed camera and a pressure applying device, wherein the bearing appliance bearing the rubber is fixed on the sliding rail, the speed power driving device, the portal frame and the double-guide-rail sliding rail are fixed on an experimental platform, and the device is kept horizontal so as to test the mechanical property of the rubber under the condition of horizontal speed; one end of the pressure applying device is arranged on the portal frame, the other end of the pressure applying device is placed on a bearing device for bearing rubber, and the pressure applying device applies the force required by the rubber under different conditions; the three-dimensional force sensor is connected with the glass hemisphere and fixed on the pressure applying device, and measures the rubber stress data in real time; the support is built by using aluminum alloy, the experiment platform also uses aluminum alloy, the surface is smooth and horizontal, and the workbench is ensured to be kept horizontal.
The speed power driving device described in the invention comprises a linear guide rail, a servo motor and a connecting device connected with a rubber bearing appliance, wherein the servo motor is fixed at one end of the linear guide rail, the linear guide rail is provided with a spiral straight rod which is fixed on the servo motor, the spiral straight rod is provided with the connecting device connected with the rubber bearing appliance, when the servo motor rotates, the spiral rod rotates to drive the connecting device to move, so that the rubber bearing device is driven to move, the rubber bearing device is given horizontal movement speed, and the rubber fixed on the rubber bearing device has horizontal speed.
The rubber bearing device comprises a stepped aluminum alloy plate (hollow as shown in the figure) with a rectangular hollow groove structure and an organic glass plate; the stepped aluminum alloy plate with the rectangular hollow groove structure is fixed on the double-guide-rail slide rails, the double-guide-rail slide rails must be kept parallel, the organic glass plate is placed on the stepped aluminum alloy plate, and the rubber is placed on the organic glass plate, so that the friction force of the rubber in the sliding process can be measured in real time.
The pressure applying device comprises a semi-spiral solid round rod and a telescopic motor. The gantry is fixed on the base, the telescopic motor is fixed on the gantry, one end of the semi-spiral solid round bar spiral is connected with the telescopic motor, the other end of the semi-spiral solid round bar is provided with the three-dimensional force sensor, and the glass hemisphere is fixed on the three-dimensional force sensor.
Specifically, a nut hole is drilled in the center of the circle at the other end of the solid round rod, the three-dimensional force sensor is fixed on the solid round rod through a nut, and then the glass hemisphere is fixed on the three-dimensional force sensor, so that the pressure required to be applied can be controlled by starting the telescopic motor, and the pressure on rubber is measured in real time through the three-dimensional force sensor.
The device for observing the surface change phenomenon of the material comprises: mainly be with high-speed camera, put a high-speed camera under pressure device, shoot record work through the rectangular hole and the organic glass board of experiment platform to the rubber contact surface, another high-speed camera is put in the side of glass board, directly shoots the record to the rubber side, can note the change phenomenon of material and glass board contact surface and side in real time through high-speed camera.
In the experiment, the speed required by the rubber in sliding is controlled by adjusting the torque of the servo motor, the pressure applied to the rubber is controlled by adjusting the torque of the telescopic motor, the pressure applied to the rubber and the friction force and the lateral force applied to the rubber in the sliding process can be measured in real time by the three-dimensional force sensor, and the data can be transmitted to a computer for recording and processing in real time. The experimental device can apply the experimental analysis result to the mechanical behavior of the rubber material by analyzing the self-excited vibration behavior of the hard hemisphere when the hard hemisphere rubs on the rubber, and simulates the mechanical property of the rubber under the pressure sliding of different hemispheroids through finite elements. The device is simple, efficient and low in cost, the tested experimental data are accurate, and the mechanical properties of the rubber at different speeds and different pressures can be accurately measured according to the required requirements.
Drawings
FIG. 1 is a schematic structural diagram of a rubber material surface friction performance testing device of the present invention.
Fig. 2 is a power drive device of the friction performance testing device of the present invention.
Fig. 3 is a pressure applying device of the frictional performance testing apparatus of the present invention.
FIG. 4 is a rubber bearing device in the friction performance testing apparatus of the present invention.
FIG. 5 is a schematic three-dimensional structure of the friction performance testing apparatus according to the present invention.
Reference numerals: a base 1; a servo motor 2; a high-speed camera 3; a high-speed camera 4; a double-guide rail slide rail 5; a telescopic motor 6; a semi-spiral solid round bar 7; a gantry 8; a screw 9; a drive connection means 10; a screw 11; a three-dimensional force sensor 12; a glass hemisphere 13; a plastic glazing panel 14; a stepped aluminum alloy plate 15; a longitudinal plate 16.
Detailed Description
In order to make the technical scheme of the rubber material surface friction performance testing device and the testing method more clearly understood, the technical scheme of the invention is further described with reference to fig. 1-5 and the detailed description.
An experimental device for testing mechanical properties of a rubber surface as shown in the figure comprises a base 1, a servo motor 2, a driving connection device 10, a double-guide-rail sliding rail 5, a pressure applying device, a rubber bearing appliance and a high-speed camera device, wherein the servo motor 2 is connected with a screw rod 9, and the driving connection device 10 is fixed on the screw rod, so that the screw rod 9 can be driven to rotate when the servo motor 2 works, then the driving connection device 10 can move, the rubber bearing appliance is connected with a longitudinal plate 16 on a hollow groove formed by assembling two screws 11 and an aluminum alloy plate, the hollow groove formed by assembling the aluminum alloy plate is fixed on a double-guide-rail sliding block, the rubber bearing appliance can be driven to move on the double-guide-rail sliding rail 5 by the movement of the driving connection device, and then the rubber can move forwards at a.
The bearing rubber appliance is characterized in that a stepped aluminum alloy plate 15 with a rectangular hollow groove structure is fixed on a double-guide-rail sliding rail 5, the double-guide-rail sliding rail must be kept parallel, an organic glass plate 14 is placed on the stepped aluminum alloy plate 15, so that a rubber block can be placed on a glass plate for testing, a high-speed camera 3 is placed below the glass plate for real-time recording of rubber contact surface change, friction force, lateral force and normal force vibration can transfer a glass hemisphere 13, and finally, the rubber block is recorded through a three-dimensional force sensor 12.
The pressurizing device of the device is shown in figure 3, a portal frame 8 can be fixed on an experiment table board, a telescopic motor 6 is fixed on the portal frame 8, one end of a half-spiral solid round rod 7 in a spiral mode is connected with the telescopic motor 6, meanwhile, a three-dimensional force sensor 12 is fixed at the other end of the half-spiral solid round rod 7 through a nut, and then a glass hemisphere 13 is fixed on the three-dimensional force sensor, so that the pressure required to be applied can be controlled by adjusting the telescopic motor, when the telescopic motor 6 is adjusted, the half-spiral solid round rod 7 can move up and down, and the pressure applied to rubber can be observed through the three-dimensional force sensor 12.
When the rubber bearing device is used, rubber is firstly placed in the bearing device, then the telescopic motor 6 is adjusted to control the pressure to be applied to the rubber, finally the constant speed is given to the rubber through the servo motor 2, the driving connecting device reciprocates on the screw rod 9 to drive the bearing device to move on the double-guide-rail sliding rail 5, the change conditions of the rubber contact surface and the side surface are respectively recorded through the two high-speed cameras 3, the data of the stress of the rubber are measured through the three-dimensional force sensor 12, and the friction force, the tangential force and the normal force between the rubber and the glass hemisphere can be measured and transmitted to a computer or a memory connected with the computer for recording and processing. The invention has simple structure and convenient use, can accurately measure the friction vibration characteristic and the deformation condition of the rubber and provides accurate reference data for the development of rubber materials.
The above description is only a preferred embodiment of the present invention, and these embodiments are based on different implementations of the present invention, and the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A rubber material friction self-excited vibration testing device comprises a base, a portal frame, a speed power driving device, a pressure applying device, a bearing rubber appliance and a high-speed camera device; the method is characterized in that: the two ends of the portal frame are arranged on the base, one end of the speed power driving device is arranged on the base, one end of the pressure applying device is arranged on the portal frame, the other end of the pressure applying device is arranged on the rubber bearing appliance, the required force of the rubber under different conditions is applied, and the speed power driving device drives the rubber bearing appliance to move.
2. A rubber material friction self-excited vibration test device according to claim 1, wherein: the pressure applying device is provided with a telescopic motor for adjusting the pressure applied to the rubber, a three-dimensional force sensor is mounted on the pressure applying device, the glass hemisphere is fixed on the three-dimensional force sensor, and the pressure applied to the rubber is detected through the three-dimensional force sensor.
3. A rubber material friction self-excited vibration test device according to claim 1, wherein: the rubber bearing device comprises a stepped aluminum alloy plate with a rectangular hollow groove structure, and a glass plate is laid in the stepped aluminum alloy plate, so that a rubber block is placed on the glass for testing.
4. A rubber material friction self-excited vibration test device according to any one of claims 1 to 3, characterized in that: the bearing rubber device is arranged on a double-guide-rail sliding rail which is arranged on the base.
5. A rubber material friction self-excited vibration test device according to claim 1, wherein: the high-speed cameras are respectively a high-speed camera arranged below the glass plate and used for recording the change of the contact surface between the rubber block and the glass plate in real time and a high-speed camera arranged on one side of the glass plate and used for recording the change of the side surface of the rubber block in real time.
6. A rubber material friction self-excited vibration test device according to claim 1, wherein: the speed power driving device comprises a linear guide rail, a servo motor and a connecting device connected with a rubber bearing appliance, the servo motor is fixed at one end of the linear guide rail, a spiral straight rod is arranged on the linear guide rail and fixed on the servo motor, the connecting device connected with the rubber bearing appliance is arranged on the spiral straight rod, and when the servo motor rotates, the spiral rod rotates to drive the connecting device to move, so that the rubber bearing appliance is driven to move.
7. A method for testing the surface friction performance of a rubber material is characterized by comprising the following steps: the rubber material friction self-excited vibration testing device of any one of claims 1 to 6 is used for testing, and comprises the following steps:
the magnitude of pressure applied to the rubber block to be tested is adjusted through a pressure applying device, and the pressure applied to the rubber block is detected through a three-dimensional force sensor;
the speed power driving device drives the bearing rubber appliance to move, so that the rubber block is driven to move;
recording 3-direction force vibration of the rubber material during friction in real time through a three-dimensional force sensor;
and recording the changes of the contact surface and the side surface of the rubber block and the glass plate in real time by two high-speed cameras.
8. The utility model provides an experimental apparatus for test rubber surface mechanical properties, includes base, portal frame, rubber bearing utensil, glass hemisphere, three-dimensional force sensor, speed power drive arrangement, two guide rail slide rails, high-speed camera and applys pressure device, fixes the bearing rubber utensil that bears rubber on two guide rail slide rails, its characterized in that: the speed power driving device, the portal frame and the double-guide-rail sliding rail are fixed on the base, and the device is kept horizontal so as to test the mechanical property of the rubber under the condition of horizontal speed; one end of the pressure applying device is arranged on the portal frame, the three-dimensional force sensor is connected with the glass hemisphere and fixed at the other end of the pressure applying device and is arranged on a rubber bearing appliance for bearing rubber, the force required by the rubber under different conditions is applied, and the rubber stress data is measured in real time.
9. The experimental device for testing the mechanical property of the surface of the rubber according to claim 8, wherein: the pressure applying device comprises a semi-spiral solid round rod and a telescopic motor.
10. The experimental device for testing the mechanical property of the surface of the rubber according to claim 9, wherein: the gantry is fixed on the base, the telescopic motor is fixed on the gantry, one end of the semi-spiral solid round bar spiral is connected with the telescopic motor, the other end of the semi-spiral solid round bar is provided with the three-dimensional force sensor, and the glass hemisphere is fixed on the three-dimensional force sensor.
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| CN202010432172.1A CN111638126A (en) | 2020-05-20 | 2020-05-20 | Experimental device for testing friction self-excited vibration of rubber material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112362575A (en) * | 2020-11-03 | 2021-02-12 | 江苏云睿汽车电器***有限公司 | Windshield wiper adhesive tape friction characteristic measuring platform |
| CN112747881A (en) * | 2020-12-29 | 2021-05-04 | 武汉理工大学 | Friction coupling vibration experiment table and measuring method thereof |
| CN112781814A (en) * | 2020-12-29 | 2021-05-11 | 武汉理工大学 | Two-degree-of-freedom friction coupling vibration experiment table |
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