CN206161448U - Test platform is twistd reverse to normal position and observation system thereof - Google Patents

Abstract

The utility model provides a test platform is twistd reverse to normal position and observation system thereof belongs to accurate scientific instrument field. The normal position is twistd reverse test platform and is included support element, moment of torsion loading unit, centre gripping unit, temperature loading unit, detecting element. Support element includes the base, and the moment of torsion loading unit is installed in the base to twistd reverse by test appearance through the drive of centre gripping unit. The centre gripping unit is used for the centre gripping to be tested kind both ends respectively including relative first clamp, the second clamp that sets up. The temperature loading unit includes the warm table, and is located between first clamp and the second clamp, and the warm table is equipped with and is used for holding the recess by test appearance. Detecting element includes first detector and second detector, and the rotation angle of moment of torsion loading unit output is measured to first detector, and the second detector detects by the moment of torsion of test appearance. The utility model discloses can carry out the normal position to the mechanics characteristic that kind is received the torsion load in -process by the test, microstructure structural change, deformation damage mechanism etc. Down in thermal field effect detects.

Description

Reverse test platform and its observation system in original position

Technical field

The utility model is related to precision scientific instrument field, in particular to it is a kind of in situ reverse test platform and its Observation system.

Background technology

In-situ mechanical test is referred to the process of and carries out Mechanics Performance Testing to material for test under micro-/ nano yardstick In, by microscopy apparatus such as electron microscope, AFM, light microscope, industry CTs to the lower material of various load effect The microdeformation of material generation, damage carry out a kind of mechanical measuring and calculation method of whole in-situ monitoring.

In the category of many micro nanometer mechanics parameter testings, be related to torsional load mechanics parameter such as shear modulus, The torque yield limit, torsional strength etc. are the important mechanical characteristics of material, but at present torsion test in situ is still at the initial stage, Also there is technological gap in the field tests of reversing in situ under power thermal coupling effect.Due to it is in situ reverse measuring technology development not into It is ripe, it is current it is in situ reverse test equipment cannot integrated thermal-field device, the torsion test under normal temperature can only be carried out, it is impossible to carry out heat In situ torsion under field action is tested.

Utility model content

The purpose of this utility model is to provide a kind of torsion test platform in situ, and it can be under thermal field effect to tested Sample is carried out in situ detection by the torsion mechanical characteristic during torsional load.

Another object of the present utility model is to provide a kind of observation system, and it can be under thermal field effect to tested sample Heterogeneous microstructure change, deformation damage mechanism in twist process etc. carry out in-situ observation.

What embodiment of the present utility model was realized in：

A kind of torsion test platform in situ, for testing tested sample off field in power thermal coupling, original position is reversed and is surveyed Examination platform includes：Support unit, moment of torsion loading unit, grip unit, temperature loading unit, detector unit.Support unit includes Base, moment of torsion loading unit is installed on base, and drives tested sample to reverse by grip unit.Grip unit includes relative setting The first clamp, second clamp of base are put and are mounted on, the two ends of tested sample are held on respectively the first clamp and the second folder Body.Temperature loading unit includes the warm table for being heated to tested sample, and warm table is connected with base, and positioned at first Between clamp and the second clamp, warm table is additionally provided with the groove for accommodating tested sample.Detector unit includes the first detector With the second detector, the first detector is connected with the matching of moment of torsion loading unit, and measures the output torsion angle of moment of torsion loading unit Degree, the second detector is connected with the second clamp, and detects the moment of torsion of the tested sample being twisted.

Preferably, temperature loading unit also includes thermal insulation board, and warm table is installed on base by thermal insulation board.

Preferably, temperature loading unit also includes heat insulation, and the second detector is connected by heat insulation with the second clamp.

Preferably, heat insulation is provided with cooling device.

Preferably, the first clamp includes the first fixture and the first pressing plate for cooperating, and the second clamp includes cooperating The second fixture and the second pressing plate, the first fixture is connected with moment of torsion loading unit, and the first fixture is connected and is formed with the first pressing plate For clamping the first folder hole of tested sample, the second fixture be connected with the second pressing plate and formed for clamp tested sample second Folder hole, the first folder hole is coaxially relative with the second folder hole.

Preferably, the test platform that reverses in situ also includes pilot unit, and pilot unit includes fixed seat, gripper shoe and leads Rail, guide rails assembling is connected in base, gripper shoe with slide, and fixed seat is fixedly arranged on gripper shoe, and the second detector is installed on solid Reservation.

Preferably, moment of torsion loading unit includes servomotor, is installed on base reduction box, main shaft, main shaft and the first folder Body connection and synchronous axial system, servomotor is connected respectively with the first detector, reduction box matching, and the output shaft of reduction box drives master Axle is rotated.

Preferably, moment of torsion loading unit also includes cooperating and the first worm gear of transmission, the first worm screw and cooperates Second worm gear, second worm screw of transmission, the output shaft of reduction box is connected with the first worm screw, and the first worm gear is synchronous with the second worm screw to be turned Dynamic to coordinate, the second worm gear is connected with main shaft.

Preferably, the first detector is photoelectric encoder, and the second detector is torque sensor.

A kind of observation system, it includes above-mentioned torsion test platform in situ.The observation system can under temperature match curing conditions, Heterogeneous microstructure change, deformation damage mechanism to the tested sample in twist process etc. carries out in-situ monitoring.

The beneficial effect of the utility model embodiment is：The utility model provide it is a kind of in situ reverse test platform and its Observation system.The original position reverses test platform and has the advantages that compact, compact conformation, measuring accuracy are high, can be aobvious with various Micro equipment is mutually compatible to form observation system, and integrated temperature loading unit, under thermal field effect, to tested sample torsional load is received During material Micromechanics characteristic and damage mechanisms carry out in-situ observation, disclose microcosmic of the material under power thermal coupling environment Deformation and Crack Extension behavior.

Description of the drawings

In order to be illustrated more clearly that the technical scheme of the utility model embodiment, below will be to use needed for embodiment Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also To obtain other related accompanying drawings according to these accompanying drawings.

Fig. 1 is the torsion test platform architecture schematic diagram in situ that the utility model embodiment 1 is provided；

Fig. 2 is the partial enlarged view at the II positions of Fig. 1；

Fig. 3 is the grip unit structural representation of the utility model embodiment 1；

Fig. 4 is the heating table structure schematic diagram of the utility model embodiment 1.

Icon：100- is in situ to reverse test platform；110- support units；112- bases；114- main bearing seats；130- moments of torsion Loading unit；132- servomotors；134- reduction boxes；The worm screws of 136- first；The worm gears of 138- first；The worm screws of 140- second；142- Second worm gear；144- worm shafts；146- main shafts；150- grip units；The clamps of 152- first；The clamps of 154- second；156- first Fixture；The pressing plates of 158- first；The fixtures of 160- second；The pressing plates of 162- second；The folder holes of 164- first；165- tested samples；170- temperature Degree loading unit；172- thermal insulation boards；174- warm tables；176- heat insulations；178- grooves；190- detector units；192- first is examined Survey device；The detectors of 194- second；210- pilot units；212- gripper shoes；214- fixed seats；216- guide rails.

Specific embodiment

It is new below in conjunction with this practicality to make purpose, technical scheme and the advantage of the utility model embodiment clearer Accompanying drawing in type embodiment, is clearly and completely described, it is clear that retouched to the technical scheme in the utility model embodiment The embodiment stated is a part of embodiment of the utility model, rather than the embodiment of whole.Generally described in accompanying drawing herein and The component of the utility model embodiment for illustrating can be arranged and designed with a variety of configurations.

Therefore, the detailed description of embodiment of the present utility model below to providing in the accompanying drawings is not intended to limit requirement The scope of the present utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all Belong to the scope of the utility model protection.

It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi It is defined in individual accompanying drawing, then it need not be further defined and is explained in subsequent accompanying drawing.

In description of the present utility model, it should be noted that term " on " orientation that indicates or position relationship be based on Orientation shown in the drawings or position relationship, or the orientation usually put when using of the utility model product or position relationship, It is for only for ease of description the utility model and simplifies description, rather than indicates or imply that the device or element of indication must have Specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.

In addition, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that indicating or implying relatively important Property.

In description of the present utility model, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " sets Put ", " installation ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integratedly Connection；Can be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning of the language in the utility model.

Embodiment 1

Fig. 1 is refer to, the present embodiment provides a kind of torsion test platform 100 in situ, and it includes support unit 110, moment of torsion Loading unit 130, grip unit 150, temperature loading unit 170, detector unit 190 and pilot unit 210.

Support unit 110 includes base 112 and the main bearing seat 114 on base 112.

Moment of torsion loading unit 130 includes servomotor 132, reduction box 134, the and of the first worm screw 136 of the transmission that cooperates First worm gear 138 (refer to Fig. 2), the second worm screw 140 of the transmission that cooperates and the second worm gear 142, worm shaft 144 and master Axle 146.

Servomotor 132 is connected with reduction box 134, and reduction box 134 is fixedly installed in base 112, the output of reduction box 134 Axle is connected with the first worm screw 136, and the first worm gear 138 is installed on the synchronous axial system of the second worm screw 140 with merga pass holding screw Worm shaft 144.Main shaft 146 and the interference fit of main bearing seat 114, the second worm gear 142 is fixed on one end of main shaft 146, main shaft 146 The other end be connected with the flange of grip unit 150.

It should be noted that reduction box 134, the first worm screw 136 and the first worm gear 138, the second worm screw 140 and the second worm gear 142 adopt larger speed reducing ratio, and the driving torque that can be exported servomotor 132 is realized largely slowing down and increases square, final defeated Excess of export low strain rate, to meet the test request of Ultra-Low Speed semi-static load.Suitable deceleration can according to the actual requirements be selected Than the present embodiment selects the speed reducing ratio 19 of reduction box 134：1, two-stage worm and gear speed reducing ratio is 400：1, substantially belong to quasistatic defeated Go out, be easy to in-situ observation and analysis crack initiation, extension form.

Grip unit 150 includes the first clamp 152 and the second clamp 154 being oppositely arranged, and the first clamp 152 includes mutual The first fixture 156 for coordinating and the first pressing plate 158, the second clamp 154 includes the second fixture 160 and the second pressing plate for cooperating 162.First fixture 156 is connected by flange with main shaft 146, and the first fixture 156 is connected and is formed for pressing from both sides with the first pressing plate 158 The first folder hole 164 of tested sample 165 is held, Fig. 3 is refer to；Second fixture 160 is connected and is formed for pressing from both sides with the second pressing plate 162 Hold the second folder hole (not shown) of tested sample 165.First folder hole 164 is coaxially relative with the second folder hole, and shape size It is identical.

It is preferred that in order to avoid tested sample 165 is slided in test, the present embodiment is by the first folder hole 164 and the Two folder holes are both designed as D fonts.According to different testing requirements, it is also possible to which the first folder hole 164 and the section of the second folder hole are set It is calculated as other shapes, such as rectangle, triangle etc..

Temperature loading unit 170 includes thermal insulation board 172, warm table 174.Thermal insulation board 172 is fixedly installed in base 112, every Hot block 176 is connected with the second fixture 160.As shown in figure 4, warm table 174 is provided with the groove 178 for accommodating tested sample 165.

It is preferred that in order to enter to circular tested sample 165 when trip temperature is loaded more easily to circular quilt The in-situ observation of test specimens 165, U-shape structure is designed as in the present embodiment by groove 178, so that scope can be from recessed The top of groove 178 is observed to tested sample 165.

It is preferred that in order that detector unit 190 remains normal working temperature when temperature is loaded, heat insulation 176 sets There is cooling device (not shown).Heat insulation 176 is designed using water-cooled in the present embodiment, is internally provided with water channel.Cooling dress Put (not shown) and other types of cooling, such as air circulation cooling may also be employed.Meanwhile, grip unit 150 adopts heat-resisting material Material is made, to reduce impact of the temperature field to frame for movement.

Detector unit 190 includes the first detector 192 and the second detector 194.First detector 192 and servomotor 132 matching connections, and the output windup-degree of servomotor 132 is measured, the second detector 194 passes through heat insulation 176 and second Fixture 160 connects, and detects the moment of torsion of tested sample 165.

It is preferred that in the present embodiment, the first detector 192 selects photoelectric encoder, the second detector 194 to pass from moment of torsion Sensor.

Pilot unit 210 includes gripper shoe 212, fixed seat 214 and guide rail 216.Guide rail 216 is fixedly installed in base 112, gripper shoe 212 is installed on guide rail 216, and fixed seat 214 is installed on gripper shoe 212.Heat insulation 176 passes through the second detector 194 are connected with fixed seat 214.It is preferred that in order that testing more accurate, gripper shoe 212 is slidably mounted in the present embodiment In guide rail 216.Gripper shoe 212 and its top include the second clamp 154, heat insulation 176, the second detector 194 can be along guide rail 216 slide, such that it is able to unload to the additional axial force suffered by tested sample 165 in test process.Meanwhile, also can expire The needs that the tested sample 165 of sufficient different length is tested respectively.If it should be noted that without the concern for tested sample Additional axial force suffered by 165, also can be directly mounted at base by the second clamp 154, heat insulation 176, the second detector 194 112。

Reverse the operation principle of test platform 100 in original position：Tested sample 165 is by the first clamp 152 and the second clamp 154 After locking, the cooling device (not shown) of heat insulation 176, then the debugging for carrying out the heating-up temperature of warm table 174 are opened.Work as survey After examination temperature stabilization, the control software for reversing test platform 100 in situ is opened, start servomotor 132, to tested sample 165 Apply torsional load, the power of the output of servomotor 132 carries out first increasing of slowing down and turns round by reduction box 134, afterwards through first Worm screw 136, the first worm gear 138, the second worm screw 140 and the second worm gear 142 carry out secondary speed-reducing and increase torsion, and most at last power passes through master Axle 146 is transferred to the first clamp 152, and the first clamp 152 drives the one end of tested sample 165 to be rotated, and tested sample 165 is another End is then fixed in fixed seat 214 by the second clamp 154 and is not rotated, and realizes the torsion to the one end of tested sample 165.Tested sample 165 under torsional load effect, and its axial property can change, and cause the change of axial dimension, be installed on so as to drive The second clamp 154 in fixed seat 214 produces linear motion on guide rail 216.The moment of torsion of tested sample 165 is carried in by the Two clamps 154 pass to torque sensor (the second detector 194), due to torque sensor (the second detector 194) can with Fagging 212 slides on guide rail 216, it is thus eliminated that because of the impact of the change to torque measurement of the axial direction of tested sample 165, improving The certainty of measurement of moment of torsion.The windup-degree and photoelectricity of the tested sample 165 detected when torque sensor (the second detector 194) When windup-degree that the servomotor 132 that encoder (the first detector 192) is detected sends is consistent, stop operating.By meter Calculation machine software systems obtain material power of the tested sample 165 under torsional load to sending into angular displacement and the process of torque signal Learn parameter.

Embodiment 2

The present embodiment provides a kind of observation system, and the observation system can according to the actual requirements, from different microscopy apparatus Combine with the test platform 100 that reverses in situ.For example, transmission electron microscope, SEM, industry CT etc..This enforcement Example is operated principle and says so that SEM combines the torsion use of test platform 100 in situ as an example to the observation system It is bright.

Tested sample 165 is again processed retained part for the symmetrical of clamping by wire cutting mode using turnery processing Plane, and tested sample 165 is processed by shot blasting using small-sized cylindrical polishing machine, obtain can be used for high-resolution micro-imaging The preferable surface smoothness of monitoring, or the microstructures such as metallographic are obtained by techniques such as chemical attacks.Then by tested sample 165 are locked.The closed baffle plate of SEM vacuum chamber is closed, and is put down by the loading of SEM itself Platform drafts the accurate location of test point in XOY plane.Next the work that the situ of example 1 reverses test platform 100 is come into effect Make process.During the entire process of test, the deformation damage situation of material under torsional load effect of tested sample 165 is put by height The SEM imaging system of big multiplying power carries out dynamic monitoring, and can simultaneously record image, also can be real-time with reference to software Obtain the important mechanics parameters such as load-deformation curve, shear modulus, the elastic modelling quantity of sign material mechanical performance.

It should be noted that to guarantee higher certainty of measurement, the utility model before testing, needs to survey in situ torsion The frame for movement of examination platform 100 and observation system carries out rigidity demarcation, to eliminate manufacture rigging error to load/angle signal Interference, and stiffness effect coefficient is added in load-deformation curve.In addition, the mark of the front temperature loading unit 170 of test Fixed work is also very important, it is ensured that the accuracy of temperature loading, and temperature fluctuation is controlled in certain limit.

Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.

Claims (10)

1. test platform is reversed in a kind of original position, for testing tested sample off field in power thermal coupling, it is characterised in that institute Stating the test platform that reverses in situ includes：Support unit, moment of torsion loading unit, grip unit, temperature loading unit, detector unit； The support unit includes base, and the moment of torsion loading unit is installed on the base, and drives institute by the grip unit State tested sample torsion；The grip unit includes being oppositely arranged and being mounted on the first clamp of the base, the second clamp, The two ends of the tested sample are held on respectively first clamp and second clamp；The temperature loading unit includes using In the warm table heated to the tested sample, the warm table is connected with the base, and positioned at first clamp And second clamp between, the warm table is additionally provided with the groove for accommodating the tested sample；The detector unit bag The first detector and the second detector are included, first detector is connected with moment of torsion loading unit matching, and measures described The output windup-degree of moment of torsion loading unit, second detector is connected with second clamp, and the institute that detection is twisted State the moment of torsion of tested sample.

2. it is according to claim 1 in situ to reverse test platform, it is characterised in that the temperature loading unit also include every Hot plate, the warm table is installed on the base by the thermal insulation board.

3. it is according to claim 1 in situ to reverse test platform, it is characterised in that the temperature loading unit also include every Hot block, second detector is connected by the heat insulation with second clamp.

4. test platform is reversed in original position according to claim 3, it is characterised in that the heat insulation is provided with cooling device.

5. test platform is reversed in original position according to claim 3, it is characterised in that first clamp includes cooperating The first fixture and the first pressing plate, second clamp includes the second fixture for cooperating and the second pressing plate, first folder Tool is connected with the moment of torsion loading unit, and first fixture is connected with first pressing plate and forms described tested for clamping First folder hole of sample, second fixture be connected with second pressing plate and formed for clamp the tested sample second Folder hole, first folder hole is coaxially relative with second folder hole.

6. test platform is reversed in the original position according to any one of Claims 1 to 5, it is characterised in that the in situ torsion is surveyed Examination platform also includes pilot unit, and the pilot unit includes fixed seat, gripper shoe and guide rail, and the guide rails assembling is in the bottom Seat, the gripper shoe is connected with the slide, and the fixed seat is fixedly arranged on the gripper shoe, and second detector is installed In the fixed seat.

7. test platform is reversed in original position according to claim 1, it is characterised in that the moment of torsion loading unit includes servo Motor, the reduction box for being installed on the base, main shaft, the main shaft is connected and synchronous axial system with first clamp, described to watch Take motor to be connected with first detector, reduction box matching respectively, the output shaft of the reduction box drives the main shaft Rotate.

8. test platform is reversed in original position according to claim 7, it is characterised in that the moment of torsion loading unit also includes phase Mutually coordinate the first worm gear, second worm gear of the first worm screw and the transmission that cooperates, second worm screw of transmission, the reduction box Output shaft is connected with first worm screw, and first worm gear coordinates with the second worm screw synchronous axial system, second worm gear It is connected with the main shaft.

9. test platform is reversed in original position according to claim 1, it is characterised in that first detector is photoelectric coding Device, second detector is torque sensor.

10. a kind of observation system, it is characterised in that include as described in any one of claim 1～9 in situ to reverse test flat Platform.