CN208847614U - Driving type piezoelectric actuator low-temperature in-site high-frequency reciprocating micro-moving frictional wear test platform - Google Patents
Driving type piezoelectric actuator low-temperature in-site high-frequency reciprocating micro-moving frictional wear test platform Download PDFInfo
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- CN208847614U CN208847614U CN201821361928.2U CN201821361928U CN208847614U CN 208847614 U CN208847614 U CN 208847614U CN 201821361928 U CN201821361928 U CN 201821361928U CN 208847614 U CN208847614 U CN 208847614U
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Abstract
The utility model relates to a kind of driving type piezoelectric actuator low-temperature in-site high-frequency reciprocating micro-moving frictional wear test platforms, belong to accurate in-situ test field.Test pressure loading unit provides power by elaborate servo motor, completes accurate pressure load via two-stage turbine and worm decelerator cooperation screw pair；High-frequency reciprocating unit is arranged in downside, using advanced Piezoelectric Ceramic technology, the flexible hinge of autonomous Design is cooperated to export high frequency fine motion displacement；Low-temperature precise clamping unit realizes accurate clamping with upper and lower fixture, and realizes low temperature load by the liquid nitrogen pipes in lower fixture；Data acquisition unit includes tension sensor, pressure sensor, double colorimetric infrared radiation thermometers.The utility model principle is reliable, compact, compact-sized, and frequency is high, and with mainstream optical microscopy, Raman spectrometer and X-ray diffractometer etc. have good compatibility with the micro imaging system of open space structure.
Description
Technical field
The utility model relates to accurate in-situ test fields, in particular to micro-moving frictional wear experimental design field, espespecially
A kind of driving type piezoelectric actuator low-temperature in-site high-frequency reciprocating micro-moving frictional wear test platform.For test specimen, high frequency is past at low ambient temperatures
In-situ test during multiple micro-moving frictional wear, can be monitored the friction and wear behavior of certain material in the process, be
It discloses its frictional behavior and damage method under micro-scale and test method is provided.
Background technique
Support and guide of the material as all new and high technologies have vital meaning to the reach of science, improve material
Expect the microdeformation damage mechanisms and performance development rule of material under the testing level of all kinds of performances, especially raising service condition
Power of test, be the key that promote material and its product properties stability and service life and national economic development and section
The important leverage of skill progress.
Fretting wear is one of major way of material failure, and friction generally occurs to contact with each other at two and relative motion
Surface between, surfacing the phenomenon that gradually losing caused by rubbing, is known as wearing.Fretting wear will lead to the surface of part
Shape and size are slowly continuously damaged, so that the working performance of whole equipment and reliability reduce.
Particularly, can occur between the contact surface of the tight fits such as thread connection, spline connection and interference fit connection micro-
Rice magnitude amplitude motion and generate abrasion, it is this generated between the metal surface mutually compressed due to small amplitude motion it is compound
The friction of form is known as fine motion friction.Fine motion friction can not only cause the fretting wear between contact surface, component is caused to be engaged,
Loosen or form pollution sources etc., and the germinating of crackle, extension can be accelerated, substantially reduce the fatigue life of component, generally
It is present in machinery industry, aerospace, nuclear reactor, power industry, science of bridge building, transport facility or even Artificial Intervention
In the tight fit component in the fields such as organ.Requirement with high-tech area to high-precision, long-life and high reliability, and it is each
The harshness of kind of working condition, the harm of fretting damage are increasingly prominent, it has also become the main reason for some key components and parts fail it
One.
Fretting wear of temperature under conditions of 0 ~ -150 DEG C belongs to low temperature fretting wear, under cryogenic, friction system
Number, frictional behavior etc. can all change.Some researches show that material can be more prone to produce brittle break under cryogenic.It opens
The fine motion friction test of material is conducive to go deep into disclosing extreme environment components failure mechanism and correlation rule under exhibition cryogenic conditions
Rule.Traditional friction-wear test technology comparative maturity, but offline test is all based on for the analysis of worn area
Means, can not the microstructure morphology to test specimen during friction test dynamically monitored.
Summary of the invention
The purpose of this utility model is to provide a kind of examinations of driving type piezoelectric actuator low-temperature in-site high-frequency reciprocating micro-moving frictional wear
Platform is tested, in conjunction with in-situ testing technique, by Image-forming instruments such as optical microscopy, X-ray diffractometers to test specimen in fretting wear
The process of microdeformation, internal injury in test process carries out whole dynamic monitoring, discloses material under low temperature fine motion friction condition
The friction and wear behavior and damage inefficacy mechanism of material.Study wear-out failure of special proprietary material under the conditions of low temperature high frequency fine motion
Mechanism fills up the blank of related fields.The utility model breakthroughly combines fine motion friction with in-situ test, and passes through
Piezoelectric driving technology realizes accurate, high frequency control, is a kind of synthesis, multi-functional in addition, cryogenic unit is also innovatively added
Fretting wear precision in-situ test device.The utility model devises high-frequency reciprocating support platform, platform be passed through liquid nitrogen after be
Test specimen provide low temperature environment, double colorimetric infrared radiation thermometers can the temperature directly to test specimen center measure, optical microphotograph
Mirror, X-ray diffractometer etc. carry out real-time crack damage observation to test specimen.
The utility model topology layout is reasonable, is integrally divided into up-down structure, and pressure-loaded unit is mainly arranged on top, in conjunction with
Elaborate servo motor and accurate worm and gear deceleration torque increase mechanism are, it can be achieved that Pressure behaviour loads；Utilize low temperature piezoelectric ceramics
High-frequency reciprocating precision actuation is realized with flexible hinge, and frequency reaches 20um in 30kHz or so, displacement；By means of existing essence
Close sensing testing technology can real-time monitoring, feedback, carry out post-processing.The test platform architecture is small and exquisite, and transmission precision is steady, can
Realize dynamically load, and can be by a variety of Image-forming instruments, the microdeformation for acting on lower material generation to load, damage are until failure
The process of destruction carries out dynamic monitoring, does depth to Micromechanics behavior of the material in micro-moving frictional wear test and damage mechanisms
Enter research.
The above-mentioned purpose of the utility model is achieved through the following technical solutions:
Driving type piezoelectric actuator low-temperature in-site high-frequency reciprocating micro-moving frictional wear test platform, including test pressure loading unit,
High-frequency reciprocating driving unit, low-temperature precise clamping unit and data acquisition unit, the test pressure loading unit is: accurate
After 23 driving torque of servo motor slows down via level-one worm screw 24, first-stage worm gear 27 and second-stage worm 22,19 torque increase of second-stage worm gear,
It drives precision lead screw 30 that rotary motion is become to the overall movement of mobile platform 16, makes mobile platform 16 towards plane test specimen direction
It is close, complete the pressure-loaded to plane test specimen；Wherein, precision lead screw 30 passes through 18 rigidity branch of precision ball screw bearing block
Support controls loading velocity by the umber of pulse of adjustment precision servo motor 23, and realizes pressure by the feedback of pressure sensor 14
Power is precisely controlled；Elaborate servo motor 23 is rigidly fixed by motor supporting base 26 and test supporting table 1；
The low-temperature precise clamping unit is: upper spherical shape test specimen and upper spherical piece fixture 12 are rigidly connected, lower plane
Test specimen is put under plane test specimen in fixture 8 by groove, and two plane test specimen upper fixtures 9 are fixed by screws under plane test specimen
On fixture 8, fixture 8 is fixed in high-frequency reciprocating support platform 7 by fixture support base 11 and carries out rigidity and connected under plane test specimen
It connects；Fixture support base 11 is internally provided with coolant flow channel, and liquid nitrogen is realized by liquid nitrogen channel 29 and is filled with and flows back, and it is low to create test specimen
Warm environment；
The high-frequency reciprocating driving unit is: low temperature piezoelectric ceramics 3 is mounted in the groove of flexible hinge 2, and pulling force passes
4 one end of sensor is threadedly coupled with the output end of flexible hinge 2, and the other end is connect with plane piece fixture support base 11, low temperature pressure
Electroceramics 3 exports high-frequency alternating micro-displacement under the driving of signal driving voltage, and driving flexible hinge 2 drives tension sensor
4 traction low-temperature precise clamping units do reciprocal micro-displacement in test supporting table 1, realize test specimen fine motion friction up and down；Low temperature
Accurate clamping unit moves on fromer rail 5 and rear rail 28 under the drive of two pairs of left sliders 6 and two pairs of right sliding blocks 10.
The data acquisition unit is: tension sensor 4 measures the driving force of high-frequency mobile and carries out feedback regulation, controls
Piezoelectric ceramic actuator processed exports accurate signal, and realization is precisely controlled；14 output data of pressure sensor and the essence for realizing pressure
Quasi- control, the temperature of double colorimetric infrared radiation thermometer real-time monitoring test specimens, optical microscopy, it is micro- that Raman spectrometer carries out friction test specimen
See the real-time in-situ observation on surface.
The precision lead screw 30 is matched with nut seat 31, and nut seat 31 and mobile platform 16 are rigidly connected, and will be rotated
Conversion of motion is linear motion, realizes pressure-loaded.
Described 14 one end of pressure sensor is threadedly coupled with flange plate fixing seat 15,13 rigidity of the other end and connector
Connection, upper spherical shape piece fixture 12 are fixed on connector 13.
The first-stage worm gear 27, second-stage worm 22 are fixed on axis fixing seat 20 by a common axis 25 and bearing 21
On, axis fixing seat 20 and mobile platform 16 are rigidly connected.
By tension sensor 4 and the collected signal of pressure sensor 14, the pressure that is voluntarily fitted in load loading procedure
Power and frictional force relationship, while cooperating collected temperature parameter that curve is presented.
The utility model has the beneficial effects that: breaking through existing friction and wear test means, provide at low ambient temperatures
High frequency micro-moving frictional wear experimental technique in situ, compact is compact-sized, is widely used.In addition, test platform and Raman
Spectrometer, X-ray diffractometer, atomic force microscope and optical microscopy etc. have the instrument of open loading and image-forming condition equal
With structural compatibility, realize that the crack initiation and propagation real-time monitoring in fine motion friction process, accurate Piezoelectric Driving are realized high
Frequency shift reciprocately, motion frequency and displacement amplitude are adjustable；Elaborate servo motor combination double reduction mechanism realizes pressure-loaded, method
It is adjustable to load and pressure value.Meanwhile parameter is loaded using the accurate closed-loop control of advanced sensors technology, it is calculated by relevant control
Method can voluntarily be fitted pressure and frictional force relationship in load loading procedure, and curve is presented in acquisition.In conclusion the utility model
There is important application prospect in aerospace, nuclear reactor, power industry etc..
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The illustrative example and its explanation of the utility model do not constitute the improper limit to the utility model for explaining the utility model
It is fixed.
Fig. 1 is the overall appearance structural representation of the utility model；
Fig. 2 is the side view of the utility model；
Fig. 3 is the tangential fretting schematic diagram of the utility model；
Fig. 4 is the flexible hinge schematic diagram of the utility model.
In figure: 1, testing supporting table；2, flexible hinge；3, low temperature piezoelectric ceramics；4, tension sensor；5, fromer rail；6,
Left slider；7, high-frequency reciprocating unit supports platform；8, fixture under plane test specimen；9, plane test specimen upper fixture；10, right sliding block；11,
Fixture support base；12, upper spherical piece fixture；13, connector；14, pressure sensor；15, flange plate fixing seat；16, it moves
Moving platform；17, ring flange connecting platform；18, precision ball screw bearing block；19, second-stage worm gear；20, axis fixing seat；21, axis
It holds, 22, second-stage worm；23, elaborate servo motor；24, level-one worm screw；25, axis；26, motor supporting base；27, first-stage worm gear；
28, rear rail；29, liquid nitrogen channel；30, precision lead screw；31, nut seat；32, top shoe；33, upper rail.
Specific embodiment
The detailed content and its specific embodiment of the utility model are further illustrated with reference to the accompanying drawing.
Referring to FIG. 1 to FIG. 4, the driving type piezoelectric actuator low-temperature in-site high-frequency reciprocating micro-moving frictional wear examination of the utility model
Platform is tested, in-situ observation and micro-moving frictional wear are integrated in one breakthroughly, it is micro- to provide the friction of fine motion at low ambient temperatures
The test pattern of pattern and Crack Damage is seen, for failure machine of the test particular surroundings proprietary material in the environment of special tight fit
Reason and temperature provide equipment and means to the influence mode basic research of fretting wear.The utility model is integrally divided into vertical up and down
Body arragement construction increases the integrated level of platform in effective space, and specifically by test pressure loading unit, high-frequency reciprocating is driven
Moving cell, low-temperature precise clamping unit and data acquisition unit composition.
The test pressure loading unit is: 23 driving torque of elaborate servo motor is via level-one worm screw 24, first-stage worm gear
27 and second-stage worm 22,19 torque increase of second-stage worm gear slow down after, drive precision lead screw 30 rotary motion is become moving along a straight line, that is, move
The overall movement of moving platform 16 keeps mobile platform 16 close towards plane test specimen direction, completes the pressure-loaded to plane test specimen；
Wherein, precision lead screw 30 improves the transmission stiffness of lead screw transmission link by 18 rigid support of precision ball screw bearing block；It is whole
During a, loading velocity can be accurately controlled by the umber of pulse of adjustment precision servo motor 23, and pass through pressure sensor
14 feedback realizes being precisely controlled for pressure；Elaborate servo motor 23 is solid by motor supporting base 26 and 1 rigidity of test supporting table
It is fixed；
The low-temperature precise clamping unit is: upper spherical shape test specimen and upper spherical piece fixture 12 are rigidly connected, and guarantee
Reach precise contact friction in friction process, lower plane test specimen is put under plane test specimen in fixture 8 by groove, two plane examinations
Part upper fixture 9 is fixed by screws under plane test specimen on fixture 8, and fixture 8 is fixed by fixture support base 11 under plane test specimen
In high-frequency reciprocating support platform 7 and it is rigidly connected；Fixture support base 11 is internally provided with coolant flow channel, and liquid nitrogen passes through liquid
Nitrogen channel 29 is realized and is filled with and flows back, and test specimen low temperature environment is created；
The high-frequency reciprocating driving unit is: low temperature piezoelectric ceramics 3 is mounted in the groove of flexible hinge 2, and pulling force passes
4 one end of sensor is threadedly coupled with the output end of flexible hinge 2, and the other end is connect with plane piece fixture support base 11, guarantees power
Transmitting it is steady.Low temperature piezoelectric ceramics 3 exports high-frequency alternating micro-displacement under the driving of signal driving voltage, drives flexible hinge
Chain 2 drives tension sensor 4 to draw low-temperature precise clamping unit and does reciprocal micro-displacement in test supporting table 1, realizes up and down
Test specimen fine motion friction；Low-temperature precise clamping unit is under the drive of two pairs of left sliders 6 and two pairs of right sliding blocks 10 in fromer rail 5 with after
It is moved on guide rail 28.
The data acquisition unit is: tension sensor 4 measures the driving force of high-frequency mobile and carries out feedback regulation, controls
Piezoelectric ceramic actuator processed exports accurate signal, and realization is precisely controlled；14 output data of pressure sensor and the essence for realizing pressure
Quasi- control, the temperature of double colorimetric infrared radiation thermometer real-time monitoring test specimens, optical microscopy, Raman spectrometer etc. then carry out friction examination
The real-time in-situ of part microcosmic surface is observed.
The precision lead screw 30 is matched with nut seat 31, and nut seat 31 and mobile platform 16 are rigidly connected, and will be rotated
Conversion of motion is linear motion, realizes pressure-loaded.
Described 14 one end of pressure sensor is threadedly coupled with flange plate fixing seat 15,13 rigidity of the other end and connector
Connection, upper spherical shape piece fixture 12 are fixed on connector 13.The straight-line displacement of upper spherical shape test specimen realizes fretting wear or more
The contact of test specimen, and it is applied with pressure, the size and feedback of the timely power output of pressure sensor 14, by adjusting control servo electricity
The umber of pulse of machine realizes precisely load.
The first-stage worm gear 27, second-stage worm 22 are fixed on axis fixing seat 20 by a common axis 25 and bearing 21
On, axis fixing seat 20 and mobile platform 16 are rigidly connected, it is ensured that stable transmission is reliable.Mobile platform 16 and nut seat 31 and upper cunning
Block 32 is rigidly connected, and moves down in leading for upper rail 33.Meanwhile mobile platform 16 passes through flange plate fixing seat 15 and flange
Disk connecting platform 17 is threadedly coupled.
By tension sensor 4 and the collected signal of pressure sensor 14, can be voluntarily fitted by relevant control algorithm
Pressure and frictional force relationship in load loading procedure, while cooperating collected temperature parameter that curve is presented.
Embodiment:
Referring to FIG. 1 to FIG. 4, high frequency in situ under the scanning electron microscope based on Piezoelectric Driving mode of the utility model design
Reciprocating micro-moving frictional wear test platform, by test pressure loading unit, high-frequency reciprocating driving unit, low-temperature precise clamping is single
Member and the most of composition of data acquisition unit composition four.Wherein, test pressure loading unit is provided dynamic by elaborate servo motor
Power completes accurate pressure load via two-stage turbine and worm decelerator cooperation screw pair；High-frequency reciprocating unit is arranged in
Downside cooperates the flexible hinge of autonomous Design to export high frequency fine motion displacement using advanced Piezoelectric Ceramic technology；Low temperature essence
Close clamping unit realizes accurate clamping with upper and lower fixture, and realizes low temperature load by the liquid nitrogen pipes in lower fixture；Number
It include tension sensor, pressure sensor, double colorimetric infrared radiation thermometers according to acquisition unit.The utility model principle is reliable, volume
Small and exquisite, compact-sized, frequency is high, and with mainstream optical microscopy, Raman spectrometer and X-ray diffractometer etc. have open sky
Between structure micro imaging system have good compatibility, can to material under cryogenic micro-moving frictional wear test in
Micromechanics behavior and damage mechanisms are furtherd investigate.
Referring to shown in Fig. 1 and Fig. 2, test pressure loading unit structure described in the utility model is as follows: elaborate servo electricity
23 output torque of machine, first-stage worm gear 27 are connect with motor output shaft spline, and first-stage worm gear 27 and second-stage worm 22 pass through a public affairs
Coaxial (25) are installed to bearing 21 and are fixed in axis fixing seat 20, and torque is via level-one worm-gears and second-stage worm worm gear
Pair transmitting, drives screw pair, converts linear motion, mobile platform 16 and nut seat 31 and top shoe 32 for rotary motion
Rigid connection, moves down in leading for upper rail 33.Meanwhile mobile platform 16 is connected by flange plate fixing seat 15 and ring flange
The threaded connection of platform 17 is connect, 14 one end of pressure sensor is threadedly coupled with flange plate fixing seat 15, and one end and connector 13 are rigid
Property connection, it is upper spherical shape piece fixture 12 be fixed on connector 13, it is upper spherical shape test specimen straight-line displacement realize in fretting wear
The contact of lower test specimen, and apply pressure, the size and feedback of the timely power output of pressure sensor 14, by adjusting control servo electricity
The umber of pulse of machine realizes precisely load.
Referring to shown in Fig. 1 to Fig. 3, the structure of low-temperature precise clamping unit described in the utility model is as follows: plane test specimen
Fixture support base 11 is internally provided with coolant flow channel, and liquid nitrogen is realized by liquid nitrogen channel 29 and is filled with and flows back, and creates test specimen low temperature
Environment, lower plane test specimen are put under plane test specimen in fixture 8 by groove, and two plane test specimen upper fixtures 9 cover and pass through spiral shell
Nail is fixed, and is entirely partially disposed in high-frequency reciprocating support platform 7 and is rigidly connected, upper spherical shape test specimen and upper spherical test specimen
Fixture 12 is rigidly connected, and guarantees to reach precise contact friction in friction process.
Referring to shown in Fig. 1, Fig. 2, Fig. 4, the structure of high-frequency reciprocating driving unit described in the utility model is as follows: low temperature pressure
In the mating groove for being mounted on flexible hinge 2 of electroceramics 3, flexible hinge 2 exports micro-displacement, is threadedly coupled with tension sensor 4,
Tension sensor 4 and plane piece fixture support base 11 are rigidly connected, and under the driving of signal driving voltage, piezoelectric ceramics 3 is driven
Dynamic flexible hinge 2 drive accurate tension sensor 4 draw entire low-temperature precise clamping unit done in test supporting table 1 it is reciprocal micro-
Thin tail sheep realizes test specimen fine motion friction up and down, wherein entire low-temperature precise clamping unit and the right sliding block 10 of left slider 6 are fixed,
It is moved under the traction of fromer rail 5 and rear rail 28.
Referring to Fig. 1, the driving force of tension sensor measurement high-frequency mobile simultaneously carries out feedback regulation, controls Piezoelectric Ceramic
Device exports accurate signal, and realization is precisely controlled；Pressure sensor output data simultaneously realizes that being precisely controlled of pressure, double colorimetrics are infrared
Temperature, the high-precision scanning electron microscope of temperature measurer real-time monitoring test specimen then carry out the real-time in-situ of friction test specimen microcosmic surface
Observation, can voluntarily be fitted pressure and frictional force relationship in load loading procedure by relevant control algorithm, acquire and form song
Line.
The outer dimension of the utility model is 85mm × 45mm × 72mm (being followed successively by length, width and height), and compact, structure is tight
It gathers, compatible with mainstream optical microscopy can use, realize observation in real time.
Referring to FIG. 1 to FIG. 4, the specific test method is as follows for the utility model: plane test specimen is inserted under plane test specimen
Fixture 8, left and right sides cover upper planar surface test specimen upper fixture 9, then screws on screw and fixes, it is ensured that no longer shakes, tries in installation spherical shape
Part rigidly fixes, and can first pass through control elaborate servo motor driver before the mounting, and upper and lower test specimen is made to keep at a distance.Inspection
It looks into whether fixture support base 11 has gas, after inspection is errorless, starts to be passed through nitrogen cooling.After ready, it is put into scanning electricity
In the cavity of mirror, at this point, double colorimetric infrared radiation thermometers have been detected by test specimen temperature, after temperature is suitable, initiation pressure load, pressure
Power is exported via sensor, and after reaching agreement numerical value, driving piezoelectric ceramics drives lower plane test specimen to start high-frequency reciprocating fine motion, is cut with scissors
The pulling force of chain output is acquired by sensor, and frequency is controlled by piezoelectric ceramic actuator, and all data pass through A/D data collecting card
Acquisition carries out data calculating using host computer, and microscopic damage deformation is acquired by Electronic Speculum and exported, and is handled and is analyzed through related software.
The foregoing is merely the preferred embodiments of the utility model, are not intended to limit the utility model, for ability
For the technical staff in domain, various modifications and changes may be made to the present invention.It is all to made by the utility model it is any modification,
Equivalent replacement, improvement etc., should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of driving type piezoelectric actuator low-temperature in-site high-frequency reciprocating micro-moving frictional wear test platform, it is characterised in that: including test
Pressure-loaded unit, high-frequency reciprocating driving unit, low-temperature precise clamping unit and data acquisition unit, the test pressure add
Carrier unit is: elaborate servo motor (23) driving torque via level-one worm screw (24), first-stage worm gear (27) and second-stage worm (22),
After second-stage worm gear (19) torque increase is slowed down, drive precision lead screw (30) that rotary motion is become to the overall movement of mobile platform (16),
Keep mobile platform (16) close towards plane test specimen direction, completes the pressure-loaded to plane test specimen；Wherein, precision lead screw (30)
By precision ball screw bearing block (18) rigid support, pass through the umber of pulse control load speed of adjustment precision servo motor (23)
Degree, and being precisely controlled for pressure is realized by the feedback of pressure sensor (14)；Elaborate servo motor (23) passes through motor support
Seat (26) is rigidly fixed with test supporting table (1)；
The low-temperature precise clamping unit is: upper spherical shape test specimen and upper spherical piece fixture (12) are rigidly connected, lower plane examination
Part is put under plane test specimen in fixture (8) by groove, and two plane test specimen upper fixtures (9) are fixed by screws in plane test specimen
On lower fixture (8), fixture (8) is fixed on high-frequency reciprocating support platform (7) simultaneously by fixture support base (11) under plane test specimen
It is rigidly connected；Fixture support base (11) is internally provided with coolant flow channel, liquid nitrogen realized by liquid nitrogen channel (29) be filled with and
Test specimen low temperature environment is created in reflux；
The high-frequency reciprocating driving unit is: low temperature piezoelectric ceramics (3) is mounted in the groove of flexible hinge (2), and pulling force passes
Sensor (4) one end is threadedly coupled with the output end of flexible hinge (2), and the other end is connect with plane piece fixture support base (11),
Low temperature piezoelectric ceramics (3) exports high-frequency alternating micro-displacement under the driving of signal driving voltage, and driving flexible hinge (2) drives
Tension sensor (4) draws low-temperature precise clamping unit and does reciprocal micro-displacement in test supporting table (1), realizes test specimen up and down
Fine motion friction；Low-temperature precise clamping unit under the drive of two pairs of left sliders (6) and two pairs of right sliding blocks (10) in fromer rail (5) and
Rear rail moves on (28).
2. driving type piezoelectric actuator low-temperature in-site high-frequency reciprocating micro-moving frictional wear test platform according to claim 1, special
Sign is: the data acquisition unit is: the driving force of tension sensor (4) measurement high-frequency mobile simultaneously carries out feedback regulation,
It controls piezoelectric ceramic actuator and exports accurate signal, realization is precisely controlled；Pressure sensor (14) output data simultaneously realizes pressure
Be precisely controlled, the temperature of double colorimetric infrared radiation thermometer real-time monitoring test specimens, optical microscopy, Raman spectrometer carries out friction examination
The real-time in-situ of part microcosmic surface is observed.
3. driving type piezoelectric actuator low-temperature in-site high-frequency reciprocating micro-moving frictional wear test platform according to claim 1, special
Sign is: the precision lead screw (30) is matched with nut seat (31), and nut seat (31) and mobile platform (16) are rigidly connected,
Linear motion is converted by rotary motion, realizes pressure-loaded.
4. driving type piezoelectric actuator low-temperature in-site high-frequency reciprocating micro-moving frictional wear test platform according to claim 1, special
Sign is: described pressure sensor (14) one end is threadedly coupled with flange plate fixing seat (15), the other end and connector
(13) it is rigidly connected, upper spherical shape piece fixture (12) is fixed on connector (13).
5. driving type piezoelectric actuator low-temperature in-site high-frequency reciprocating micro-moving frictional wear test platform according to claim 1, special
Sign is: the first-stage worm gear (27), second-stage worm (22) are fixed on axis by a common axis (25) and bearing (21) and consolidate
In reservation (20), axis fixing seat (20) and mobile platform (16) are rigidly connected.
6. driving type piezoelectric actuator low-temperature in-site high-frequency reciprocating micro-moving frictional wear test platform according to claim 1, special
Sign is: by tension sensor (4) and pressure sensor (14) collected signal, being voluntarily fitted in load loading procedure
Pressure and frictional force relationship, while cooperating collected temperature parameter that curve is presented.
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| CN201821361928.2U CN208847614U (en) | 2018-08-23 | 2018-08-23 | Driving type piezoelectric actuator low-temperature in-site high-frequency reciprocating micro-moving frictional wear test platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821361928.2U CN208847614U (en) | 2018-08-23 | 2018-08-23 | Driving type piezoelectric actuator low-temperature in-site high-frequency reciprocating micro-moving frictional wear test platform |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060575A (en) * | 2018-08-23 | 2018-12-21 | 吉林大学 | Driving type piezoelectric actuator low-temperature in-site high-frequency reciprocating micro-moving frictional wear test platform |
| CN110146397A (en) * | 2019-05-24 | 2019-08-20 | 西北工业大学 | One kind being bolted interface micro-moving frictional wear test device and its method |
| CN111982440A (en) * | 2020-09-01 | 2020-11-24 | 天津航天瑞莱科技有限公司 | Liquid nitrogen bifurcation pipeline double-platform shunt excitation vibration test system |
| CN113138130A (en) * | 2021-04-22 | 2021-07-20 | 哈尔滨工业大学 | Ultralow-temperature in-situ tensile platform and scanning electron microscope ultralow-temperature in-situ tensile test system |
-
2018
- 2018-08-23 CN CN201821361928.2U patent/CN208847614U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060575A (en) * | 2018-08-23 | 2018-12-21 | 吉林大学 | Driving type piezoelectric actuator low-temperature in-site high-frequency reciprocating micro-moving frictional wear test platform |
| CN110146397A (en) * | 2019-05-24 | 2019-08-20 | 西北工业大学 | One kind being bolted interface micro-moving frictional wear test device and its method |
| CN110146397B (en) * | 2019-05-24 | 2021-07-09 | 西北工业大学 | Bolt connection interface fretting friction wear testing device and method thereof |
| CN111982440A (en) * | 2020-09-01 | 2020-11-24 | 天津航天瑞莱科技有限公司 | Liquid nitrogen bifurcation pipeline double-platform shunt excitation vibration test system |
| CN111982440B (en) * | 2020-09-01 | 2024-06-07 | 天津航天瑞莱科技有限公司 | Liquid nitrogen bifurcation pipeline double-platform parallel excitation vibration test system |
| CN113138130A (en) * | 2021-04-22 | 2021-07-20 | 哈尔滨工业大学 | Ultralow-temperature in-situ tensile platform and scanning electron microscope ultralow-temperature in-situ tensile test system |
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