CN203299067U - Spherical contact-type frictional characteristic testing device under ultrasonic vibration - Google Patents
Spherical contact-type frictional characteristic testing device under ultrasonic vibration Download PDFInfo
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- CN203299067U CN203299067U CN2013202613311U CN201320261331U CN203299067U CN 203299067 U CN203299067 U CN 203299067U CN 2013202613311 U CN2013202613311 U CN 2013202613311U CN 201320261331 U CN201320261331 U CN 201320261331U CN 203299067 U CN203299067 U CN 203299067U
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Abstract
The utility model discloses a spherical contact-type frictional characteristic testing device under ultrasonic vibration, which comprises a main motion unit, a loading unit and a force-measuring unit; torque output by a stepping motor is converted into axial pressure of a sliding table through a screw pair of a trapezoidal screw rod, so that an upper sample and a lower sample, which are mounted at the bottom of a piezoelectric ultrasonic transducer, can be in contact with each other, and certain pressure is applied on the lower sample; when the piezoelectric ultrasonic transducer is connected to an ultrasonic power supply, the upper sample generates supersonic-frequency vibration of micron-sized amplitude in the horizontal direction or vertical direction, and the lower sample rotates along with a rotating stage to constitute a friction pair with the upper sample, so that the frictional characteristics of spherical contact under ultrasonic vibration can be tested. The device can accurately control the test parameters, is high in degree of automation, and allows spherical contact-type friction experiments of various friction materials under different ultrasonic vibration frequencies and amplitudes.
Description
Technical field
The utility model relates to a kind of friction wear testing machine, particularly a kind of ultrasonic vibration lower peripheral surface contact-type frictional characteristic test device.
Background technology
Friction force between object is subjected to the impact of many factors, such as: the character of the roughness of friction surface, sliding speed, material, normal force, stick-slip characteristic, environment temperature and relative humidity, lubricated and vibration etc.Wherein, the way that adopts the vibration of different frequency and amplitude to affect friction force is widely applied in a lot of fields.And as far back as nineteen fifty-nine, American scholar Fridman etc. have studied the impact of vertical vibration on coefficient of static friction.Found that, along with the increase of amplitude, coefficient of static friction reduces gradually, until reduce to zero, negative value finally occurs.Afterwards, Godfrey utilized the experimental provision of design, by the impedance between measuring vibrations acceleration and friction pair, had studied the impact of vertical vibration on friction force.Find when vibration acceleration approaches and surpass acceleration of gravity, vibration can obviously reduce friction, and can be in the situation that not exclusively separate and significantly reduce friction, and think that the reason that vibration reduces friction is that vibration reduces the load force between friction pair.The various countries expert also finds that under study for action Under Ultrasonic Vibration kinetic energy reduces friction in recent years, has proposed ultrasonic antifriction.Ultrasonic antifriction becomes the focus of people's research gradually, and is applied in a plurality of fields.
Development along with science and technology and industrial level, ultrasonic vibration is one to the impact that rubs and does not allow the problem of avoiding in fields such as Ultrasonic machining, ultra-sonic welded and ultrasonic motors, for example: when the ultrasonic drawing tinsel, will consider how to reduce pulling capacity, improve surface quality; When ultra-sonic welded, to consider how to control Oscillation Amplitude, weld interval and welding quality; In ultrasonic motor, to consider How to choose friction material, increase friction force, raising drive efficiency etc. under the ultrasonic vibration condition.
According to classic sliding friction theory: friction force only depends on contact and material character.Facts have proved, above-mentioned theory has significant limitation, can only be for calculating approx.Friction under ultrasonic vibration is a kind of special kinetic friction, is a more complicated contact friction process, the many factors of impact.For example, the pairing character of material pair, the size of static duration of contact, normal load, the rigidity of friction pair and elasticity, sliding speed, temperature regime, the amplitude on ultrasonic vibration surface and contact area, sliding speed etc. all have a great impact.About the essence of ultrasonic vibration on the impact of friction, the scholar is different to its explanation, has proposed different viewpoints.Therefore need to the rubbing characteristics under ultrasonic vibration, probe into by research technique, could further promote the theoretical research of rubbing characteristics under ultrasonic vibration.
Friction wear testing machine is to carry out the requisite experimental facilities of tribology experiments research, and a variety of friction wear testing machines have been arranged on market, as M2000 friction wear testing machine, pin-dish friction wear testing machine, CERT testing machine etc.Yet existing friction wear testing machine all can't carry out the Research on wear and friction under ultrasonic vibration.Therefore, develop the device of the lower rubbing characteristics test of ultrasonic vibration impact, to the application of ultrasonic vibration at engineering field, the tools such as the theoretical research of tribology are of great significance.
Summary of the invention
The purpose of this utility model is to make up the deficiencies in the prior art, and a kind of ultrasonic vibration lower peripheral surface contact-type frictional characteristic test device is provided, and for probing into ultrasonic vibration, to the essence of frictional influence, provides the experimental technique support.
The utility model is comprised of main motion unit, loading unit and dynamometry unit;
Described main motion unit comprises pedestal, direct current generator support, direct current generator, lower sample erecting bed, the direct current generator support is fixed on pedestal, direct current generator is fixedly mounted on the direct current generator support by the through hole on flange face, and lower sample erecting bed is connected with the direct current generator output shaft; The universal stage of described lower sample erecting bed is connected with the direct current generator output shaft, and lower sample is contained on the universal stage axle with the center pit location, and lower sample rotates with universal stage, with upper sample, forms friction pair;
described loading unit comprises electricity driving displacement platform fixed mount, the electricity driving displacement platform, piezoelectric ultrasonic transducer fixed mount and piezoelectric ultrasonic transducer, electricity driving displacement platform fixed mount is structure of right angle tyoe spare, by mutually perpendicular vertical plate and leveling board, the floor that is located between vertical plate and leveling board forms, electricity driving displacement platform fixed mount is assemblied on pedestal by the mounting hole on leveling board, the electricity driving displacement platform is assemblied on electricity driving displacement platform fixed mount by base plate, triaxial force sensor is arranged on the slide unit of electricity driving displacement platform, the piezoelectric ultrasonic transducer fixed mount is arranged on triaxial force sensor, piezoelectric ultrasonic transducer is fixed on the piezoelectric transducer fixed mount, piezoelectric ultrasonic transducer, the upper sample of piezoelectric ultrasonic transducer bottom are positioned at lower sample top, and upper sample can contact with lower sample,
Described electricity driving displacement platform is comprised of stepper motor support, stepper motor, spring coupling, the first trapezoidal screw bearing, trapezoidal screw, slide unit, the first guide rail, the second trapezoidal screw bearing, the second guide rail and base plate, base plate is arranged on the vertical plate of electricity driving displacement platform fixed mount, the stepper motor support is assemblied in base plate one end, stepper motor is arranged on the stepper motor support, by spring coupling, with trapezoidal screw, be connected, trapezoidal screw is sleeved between the first trapezoidal screw bearing and the second trapezoidal screw bearing; The first guide rail and the second guide rail are parallel to respectively trapezoidal screw and are fixedly mounted on the base plate both sides, and slide unit is sleeved on trapezoidal screw, the first guide rail and the second guide rail, form screw pair; Rotatablely moving of stepper motor drives slide unit along the axial rectilinear motion of trapezoidal screw by screw pair, drives the piezoelectric ultrasonic transducer lifting; When stepper motor is operated in torque mode, the moment of torsion of stepper motor output is converted into the axle pressure of slide unit by the screw pair of trapezoidal screw, and then the upper sample that makes to be arranged on the piezoelectric ultrasonic transducer bottom contacts and lower sample is applied to certain pressure with lower sample;
Described piezoelectric ultrasonic transducer comprises pretension bolt, back shroud, electrode, piezoelectric ceramics and front shroud, the front shroud front portion is conical structure, on the flange face of rear portion, be evenly arranged in the circumferential direction of the circle four through holes, by screw and piezoelectric ultrasonic transducer fixed mount, connect, make piezoelectric ultrasonic transducer with the slide unit lifting, pretension bolt runs through back shroud and piezoelectric ceramics center pit, screw in the threaded hole of front shroud upper end, thereby fastening piezoelectric ceramics, electrode alternately is welded between piezoelectric ceramics, with ultrasonic power, adopts electric wire to be connected; When the access ultrasonic power, piezoelectric ceramics produces stretching vibration longitudinally, by the cumulative action of front shroud, impels the lower sample that is arranged on the front shroud front end face to produce the ultrasonic frequency vibration of micron order amplitude;
Described upper sample front end is processed into dome-type, and middle part is pyramidal structure, and rear end face processes the outer cone structure with Morse's taper, the female cone interference fit with Morse's taper of the front shroud front portion of outer cone and piezoelectric ultrasonic transducer.
The beneficial effects of the utility model are:
The utility model is the Control experiment parameter accurately, and automaticity is high, can carry out the sphere contact type frictional experiment of all types of friction materials under different ultrasonic vibration frequencies and amplitude.The utility model, for disclosing the essence of ultrasonic vibration to frictional influence, provides the experimental technique means, and to the application of ultrasonic vibration at engineering field, the theoretical research of tribology will be played the promotion facilitation.
The accompanying drawing explanation
Fig. 1 is the schematic perspective view of the utility model the first embodiment.
Fig. 2 is the schematic perspective view of the lifting table of the utility model the first embodiment.
Fig. 3 is the schematic perspective view of the piezoelectric ultrasonic transducer of the utility model the first embodiment.
Fig. 4 is the cut-open view of the piezoelectric ultrasonic transducer of the utility model the first embodiment.
Fig. 5 is the cut-open view of the lower sample erecting bed of the utility model the first embodiment.
Fig. 6 is the schematic perspective view of the utility model the second embodiment.
Fig. 7 is the front view of the piezoelectric ultrasonic transducer of the utility model the second embodiment.
Fig. 8 is the friction pair way of contact schematic diagram of the utility model the first embodiment.
Fig. 9 is the friction pair way of contact schematic diagram of the utility model the second embodiment.
in figure: 1. pedestal, 2. electricity driving displacement platform fixed mount, 3. electricity driving displacement platform, 4. triaxial force sensor, 5. piezoelectric ultrasonic transducer right angle fixed mount, 6. piezoelectric ultrasonic transducer, 7. go up sample, 8. play sample, 9. play the sample erecting bed, 10. direct current generator, 11. direct current generator support, 12. yielding rubber, 13. stepper motor support, 14. stepper motor, 15. spring coupling, 16. the first trapezoidal screw bearing, 17. trapezoidal screw, 18. slide unit, 19. the first guide rail, 20. the second trapezoidal screw bearing, 21. the second guide rail, 22. base plate, 23. pretension bolt, 24. back shroud, 25. electrode, 26. piezoelectric ceramics, 27. front shroud, 28. universal stage, 29. briquetting, 30. spring washer, 31. nut.
Embodiment
The first embodiment:
Consult Fig. 1 to shown in Figure 5, the present embodiment is comprised of main motion unit, loading unit and dynamometry unit;
Described main motion unit comprises pedestal 1, direct current generator support 11, direct current generator 10, lower sample erecting bed 9, pedestal 1 bottom surface is equipped with four cylindrical yielding rubbers 12 that structure is identical, direct current generator support 11 adopts and is bolted on pedestal 1, direct current generator 10 is fixedly mounted on direct current generator support 11 by the through hole on flange face, and lower sample erecting bed 9 is connected with the direct current generator output shaft.Consult shown in Figure 5, described lower sample erecting bed 9 is comprised of universal stage 29, briquetting 30, spring washer 31, nut 32, universal stage 29 bottom end faces are provided with hole and keyway, by hole, with keyway, with direct current generator 10 output shafts, be connected, and the threaded hole that is provided with by side, be screwed into holding screw, direct current generator 10 output shafts are compressed, speed driven rotary platform 29 motions of direct current generator 10 to set; Lower sample 8 is contained on universal stage 29 axles with the center pit location, briquetting 30 lower surfaces contact with lower sample 8 upper surfaces, by gland nut 32 and spring washer 31, briquetting 30 is compressed, thereby lower sample 8 is compressed and is arranged on universal stage, make lower sample 8 with universal stage 29 rotations, with upper sample 7, form friction pair.
described loading unit comprises electricity driving displacement platform fixed mount 2, electricity driving displacement platform 3, piezoelectric ultrasonic transducer fixed mount 5 and piezoelectric ultrasonic transducer 6, electricity driving displacement platform fixed mount 2 is structure of right angle tyoe spare, by mutually perpendicular vertical plate and leveling board, the floor that is located between vertical plate and leveling board forms, electricity driving displacement platform fixed mount 2 is assemblied on pedestal 1 by the mounting hole on leveling board, electricity driving displacement platform 3 is assemblied on electricity driving displacement platform fixed mount 2 by base plate 22, triaxial force sensor 4 is arranged on the slide unit 18 of electricity driving displacement platform 6, piezoelectric ultrasonic transducer fixed mount 5 is arranged on triaxial force sensor 4, piezoelectric ultrasonic transducer 6 is assemblied on the leveling board of piezoelectric transducer fixed mount 5 by the mounting hole of flange face, the upper sample 7 of piezoelectric ultrasonic transducer 6 bottoms is positioned at lower sample 8 tops, upper sample 7 can contact with lower sample 8,
consult shown in Figure 2, described electricity driving displacement platform 3 is by stepper motor support 13, stepper motor 14, spring coupling 15, the first trapezoidal screw bearing 16, trapezoidal screw 17, slide unit 18, the first guide rail 19, the second trapezoidal screw bearing 20, the second guide rail 21 and base plate 22 form, base plate 22 is arranged on the vertical plate of electricity driving displacement platform fixed mount 2, stepper motor support 13 is assemblied in base plate 22 1 ends, stepper motor 14 is arranged on stepper motor support 13, by spring coupling 15, with trapezoidal screw 17, be connected, trapezoidal screw 17 is sleeved between the first trapezoidal screw bearing 16 and the second trapezoidal screw bearing 20, the first guide rail 19 and the second guide rail 21 are parallel to respectively trapezoidal screw 17 and are fixedly mounted on the base plate both sides, and slide unit 18 is sleeved on trapezoidal screw 17, the first guide rail 19 and the second guide rail 21, form screw pair, rotatablely moving of stepper motor 14 drives slide unit 18 along the axial rectilinear motion of trapezoidal screw 17 by screw pair, drives piezoelectric ultrasonic transducer 6 liftings.When stepper motor 14 is operated in torque mode, the moment of torsion of stepper motor 14 outputs is converted into the axle pressure of slide unit 18 by the screw pair of trapezoidal screw 17, and then the upper sample 7 that makes to be arranged on piezoelectric ultrasonic transducer 6 bottoms contacts with lower sample 8 and lower sample 8 is applied to certain pressure.
consult Fig. 3 and shown in Figure 4, described piezoelectric ultrasonic transducer 6 comprises pretension bolt 23, back shroud 24, electrode 25, piezoelectric ceramics 26 and front shroud 27, front shroud 27 front portions are conical structure, on the flange face of rear portion, be evenly arranged in the circumferential direction of the circle four through holes, by screw and piezoelectric ultrasonic transducer fixed mount 5, connect, make piezoelectric ultrasonic transducer 6 with slide unit 18 liftings, pretension bolt 23 runs through back shroud 24 and piezoelectric ceramics 26 center pits, screw in the threaded hole of front shroud 27 upper ends, thereby fastening piezoelectric ceramics 26, electrode 25 alternately is welded between piezoelectric ceramics 26, with ultrasonic power, adopt electric wire to be connected.When the access ultrasonic power, piezoelectric ceramics 26 produces stretching vibration longitudinally, by the cumulative action of front shroud 27, impels the lower sample 7 that is arranged on front shroud 27 front end faces to produce the ultrasonic frequency vibration of micron order amplitude.
Described upper sample 7 front ends are processed into dome-type, and guarantee certain roughness and hardness, middle part is pyramidal structure, and rear end face processes the outer cone structure with Morse's taper, the female cone interference fit with Morse's taper of front shroud 27 front portions of outer cone and piezoelectric ultrasonic transducer 6.
Described dynamometry unit is triaxial force sensor 4, and the model that is specifically related to is: FC-K3D120.The measurement range of X-axis, Y-axis and Z axis is respectively Fx=± 50N, Fy=± 200N, Fz=± 1KN.What in the utility model, use is: Y-axis is applied to the pressure size on lower sample 8 for measuring, the friction force size that produces between the friction pair that X-axis forms for the upper sample 7 of measuring process of the test and lower sample 8.
Consult Fig. 1 and shown in Figure 6, the components and parts that the first embodiment and the second embodiment are involved and concrete model are: direct current generator 10 models are the 92BL-2015H1-LK-B type, and stepper motor 14 models can be the BS57HB51-03 type.
The second embodiment:
consult Fig. 6 and shown in Figure 7, the structure of the second embodiment is basic identical with embodiment mono-, difference is that the piezoelectric ultrasonic transducer fixed mount 5 that is connected with triaxial force sensor 4 is the board-type structural member, piezoelectric ultrasonic transducer 6 levels are arranged on piezoelectric ultrasonic transducer fixed mount 5, upper sample 8 is arranged on piezoelectric ultrasonic transducer 6 front portions, front shroud 27 front portions of piezoelectric ultrasonic transducer 6 all are milled into flat structure up and down, lower flat horizontal surface processes the female cone with Morse's taper, with the outer cone interference fit on upper sample 7 rear end faces, the axis of namely going up sample 7 is vertical with piezoelectric ultrasonic transducer 6 axis.When piezoelectric ultrasonic transducer 6 connected ultrasonic power, upper sample 8 produced the ultrasonic frequency vibration of micron order amplitude in the horizontal direction.
Consult Fig. 8 and shown in Figure 9, the first embodiment shows the different of the friction pair way of contact from the principle of work difference of the second embodiment.In the first embodiment, upper sample 8 direction of vibration are parallel with the direction of exerting pressure, perpendicular to lower sample 7 plane of movement; In the second embodiment, upper sample 8 direction of vibration are vertical with the direction of exerting pressure, and are parallel to lower sample 7 plane of movement.
Test process of the present utility model is as follows:
1. before the friction and wear test of tested lower sample 7 under carrying out ultrasonic vibration, friction surface need obtain surface smoothness preferably by polishing, then by lower sample 7 clampings on lower sample erecting bed 9.
2. control electricity driving displacement platform 3 and descend, sample 8 is contacted with lower sample 7, and apply certain pressure, by the Y-axis reading of triaxial force sensor 4, control the size of exerting pressure.
3. the connection ultrasonic power, make sample 8 produce the ultrasonic frequency vibration of micron order amplitude, and can power and vibration frequency size be set by ultrasonic power.
4. start direct current generator 10, and set certain movement speed, carry out friction test.
5. gather and export the friction force signal.
6. after certain hour, stop direct current generator 10 runnings, close ultrasonic power.Control electricity driving displacement platform 3 and rise, sample 8 is separated with lower sample 7, lower sample 7 is unloaded from lower sample erecting bed 9, further by the surperficial polishing scratch situation of sample 7 under the pertinent instruments analysis.
Claims (3)
1. a ultrasonic vibration lower peripheral surface contact-type frictional characteristic test device, is characterized in that: main motion unit, loading unit and dynamometry unit, consist of;
Described main motion unit comprises pedestal (1), direct current generator support (11), direct current generator (10), lower sample erecting bed (9), direct current generator support (11) is fixed on pedestal (1), it is upper that direct current generator (10) is fixedly mounted on direct current generator support (11) by the through hole on flange face, and lower sample erecting bed (9) is connected with the direct current generator output shaft; The universal stage (29) of described lower sample erecting bed (9) is connected with direct current generator (10) output shaft, lower sample (8) is contained on universal stage (29) axle with the center pit location, lower sample (8), with universal stage (29) rotation, forms friction pair with upper sample (7);
described loading unit comprises electricity driving displacement platform fixed mount (2), electricity driving displacement platform (3), piezoelectric ultrasonic transducer fixed mount (5) and piezoelectric ultrasonic transducer (6), electricity driving displacement platform fixed mount (2) is structure of right angle tyoe spare, by mutually perpendicular vertical plate and leveling board, the floor that is located between vertical plate and leveling board forms, electricity driving displacement platform fixed mount (2) is assemblied on pedestal (1) by the mounting hole on leveling board, electricity driving displacement platform (3) is assemblied on electricity driving displacement platform fixed mount (2) by base plate (22), triaxial force sensor (4) is arranged on the slide unit (18) of electricity driving displacement platform (6), piezoelectric ultrasonic transducer fixed mount (5) is arranged on triaxial force sensor (4), the upper sample (7) of piezoelectric ultrasonic transducer (6) bottom is positioned at lower sample (8) top, upper sample (7) can contact with lower sample (8),
described electricity driving displacement platform (3) is by stepper motor support (13), stepper motor (14), spring coupling (15), the first trapezoidal screw bearing (16), trapezoidal screw (17), slide unit (18), the first guide rail (19), the second trapezoidal screw bearing (20), the second guide rail (21) and base plate (22) form, base plate (22) is arranged on the vertical plate of electricity driving displacement platform fixed mount (2), stepper motor support (13) is assemblied in base plate (22) one ends, stepper motor (14) is arranged on stepper motor support (13), by spring coupling (15), with trapezoidal screw (17), be connected, trapezoidal screw (17) is sleeved between the first trapezoidal screw bearing (16) and the second trapezoidal screw bearing (20), the first guide rail (19) and the second guide rail (21) are parallel to respectively trapezoidal screw (17) and are fixedly mounted on the base plate both sides, and it is upper that slide unit (18) is sleeved on trapezoidal screw (17), the first guide rail (19) and the second guide rail (21), form screw pair, rotatablely moving of stepper motor (14) drives slide unit (18) along the axial rectilinear motion of trapezoidal screw (17) by screw pair, drives piezoelectric ultrasonic transducer (6) lifting, when stepper motor (14) while being operated in torque mode, the moment of torsion of stepper motor (14) output is converted into the axle pressure of slide unit (18) by the screw pair of trapezoidal screw (17), and then the upper sample (7) that makes to be arranged on piezoelectric ultrasonic transducer (6) bottom contacts with lower sample (8) and lower sample (8) is exerted pressure,
described piezoelectric ultrasonic transducer (6) comprises pretension bolt (23), back shroud (24), electrode (25), piezoelectric ceramics (26) and front shroud (27), front shroud (27) front portion is conical structure, on the flange face of rear portion, be evenly arranged in the circumferential direction of the circle four through holes, by screw and piezoelectric ultrasonic transducer fixed mount (5), connect, make piezoelectric ultrasonic transducer (6) with slide unit (18) lifting, pretension bolt (23) runs through back shroud (24) and piezoelectric ceramics (26) center pit, screw in the threaded hole of front shroud (27) upper end, thereby fastening piezoelectric ceramics (26), electrode (25) alternately is welded between piezoelectric ceramics (26), with ultrasonic power, adopt electric wire to be connected, when the access ultrasonic power, piezoelectric ceramics (26) produces stretching vibration longitudinally, by the cumulative action of front shroud (27), impels the lower sample (7) that is arranged on front shroud (27) front end face to produce the ultrasonic frequency vibration of micron order amplitude,
Described upper sample (7) front end is processed into dome-type, middle part is pyramidal structure, rear end face processes the outer cone structure with Morse's taper, the female cone interference fit with Morse's taper that the front shroud (27) of outer cone and piezoelectric ultrasonic transducer (6) is anterior.
2. a kind of ultrasonic vibration lower peripheral surface contact-type frictional characteristic test device according to claim 1, it is characterized in that: piezoelectric ultrasonic transducer (6) is assemblied on the leveling board of piezoelectric transducer fixed mount (5) by the mounting hole of flange face.
3. a kind of ultrasonic vibration lower peripheral surface contact-type frictional characteristic test device according to claim 1, it is characterized in that: the described piezoelectric ultrasonic transducer fixed mount (5) that is connected with triaxial force sensor (4) is the board-type structural member, piezoelectric ultrasonic transducer (6) level is arranged on piezoelectric ultrasonic transducer fixed mount (5), upper sample (8) is arranged on piezoelectric ultrasonic transducer (6) front portion, front shroud (27) front portion of piezoelectric ultrasonic transducer (6) is flat structure up and down, lower flat horizontal surface has the female cone of Morse's taper, with the outer cone interference fit on upper sample (7) rear end face, the axis of upper sample (7) is vertical with piezoelectric ultrasonic transducer (6) axis, while connecting ultrasonic power, upper sample (8) produces the ultrasonic frequency vibration of micron order amplitude in the horizontal direction when piezoelectric ultrasonic transducer (6).
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278411A (en) * | 2013-05-14 | 2013-09-04 | 吉林大学 | Spherical contact type friction characteristic testing device under ultrasonic vibration |
| CN104655511A (en) * | 2015-03-13 | 2015-05-27 | 南京林业大学 | Multifunctional friction wear testing machine |
| CN107101416A (en) * | 2016-02-19 | 2017-08-29 | 上海东全生物科技有限公司 | A kind of freeze thawing machine clamping device screw mandrel platform |
| CN109290816A (en) * | 2018-12-11 | 2019-02-01 | 河南理工大学 | Tunable arrangement and its application method are processed suitable for supersonic vibration cutting |
| 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 |
| CN113092360A (en) * | 2021-03-30 | 2021-07-09 | 燕山大学 | Device and method for testing friction of arc-shaped surface under vibration condition |
| CN113155729A (en) * | 2021-03-26 | 2021-07-23 | 南通优氟防腐科技有限公司 | Tetrafluoro powder finished product adhesion tester |
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2013
- 2013-05-14 CN CN2013202613311U patent/CN203299067U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278411A (en) * | 2013-05-14 | 2013-09-04 | 吉林大学 | Spherical contact type friction characteristic testing device under ultrasonic vibration |
| CN103278411B (en) * | 2013-05-14 | 2016-04-13 | 吉林大学 | Ultrasonic vibration lower peripheral surface contact-type frictional characteristic test device |
| CN104655511A (en) * | 2015-03-13 | 2015-05-27 | 南京林业大学 | Multifunctional friction wear testing machine |
| CN107101416A (en) * | 2016-02-19 | 2017-08-29 | 上海东全生物科技有限公司 | A kind of freeze thawing machine clamping device screw mandrel platform |
| CN109290816A (en) * | 2018-12-11 | 2019-02-01 | 河南理工大学 | Tunable arrangement and its application method are processed suitable for supersonic vibration cutting |
| CN109290816B (en) * | 2018-12-11 | 2023-09-19 | 河南理工大学 | Adjustable device suitable for ultrasonic vibration cutting processing and using method thereof |
| 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 |
| CN113155729A (en) * | 2021-03-26 | 2021-07-23 | 南通优氟防腐科技有限公司 | Tetrafluoro powder finished product adhesion tester |
| CN113092360A (en) * | 2021-03-30 | 2021-07-09 | 燕山大学 | Device and method for testing friction of arc-shaped surface under vibration condition |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20140514 |