CN103528889A - In situ tension experiment instrument based on inchworm type piezoelectric actuator - Google Patents
In situ tension experiment instrument based on inchworm type piezoelectric actuator Download PDFInfo
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- CN103528889A CN103528889A CN201310524138.7A CN201310524138A CN103528889A CN 103528889 A CN103528889 A CN 103528889A CN 201310524138 A CN201310524138 A CN 201310524138A CN 103528889 A CN103528889 A CN 103528889A
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Abstract
The invention discloses an in situ tension experiment instrument based on an inchworm type piezoelectric actuator and belongs to the field of in situ mechanics performance testing. The in situ tension experiment instrument based on the inchworm type piezoelectric actuator is mainly composed of a driving unit, a clamping unit, a supporting unit, a signal detection and control unit and the like, wherein the driving unit is the inchworm type piezoelectric actuator which is based on oblique block clamping, the clamping unit is provided with an adjustable tailstock, the initial distance between two clamps can be adjusted according to the specific situation of a test part, the supporting unit is provided with a pair of optical axis guide rails which are parallel to each other so that the stress deviation of a rotor of the actuator can be reduced, and the signal detection and control unit is composed of a precise pull rod displacement sensor and a precise S type tension sensor. Due to the fact that the novel piezoelectric actuator is adopted to serve as the driving unit, the in situ tension experiment instrument based on the inchworm type piezoelectric actuator has the advantages of being high in precision, convenient to control, low in cost and the like. Cross-scale in situ tension load testing of macroscopical standard and non-standard test parts can be achieved, and in situ observation of crack generation and extending and fracture in the fracturing process of the parts to be tested is achieved.
Description
Technical field
The present invention relates to a kind of original position stretching experiment instrument based on looper type piezoelectric actuator, belong to in-situ mechanical field tests.The present invention and high-speed camera, scanning electron microscope (SEM), atomic force microscope (AFM), optical microscope and Raman spectrometer etc. have good compatibility, can be widely used in the original position stretching test of material mechanical performance.
Background technology
There is very large difference in the Micro Mechanical Properties of material and macroscopical classical mechanics performance.In many performance parameters of the micro nanometer mechanics test of material, the parameters such as elastic modulus, hardness, break limit, shear modulus are topmost tested objects, for above-mentioned material property parameter, there is various test, as pulling method, compression method, shearing method, torsional technique, bending method, Using Nanoindentation and eardrum method etc., wherein original position stretching method of testing can more comprehensively embody the mechanical property of material, can analyze more intuitively by real-time stress-strain curve the mechanical property such as break limit, elastic modulus of material.
At present, Jilin University has developed some original position stretching Mechanics Performance Testing devices, and has obtained good effect.The traditional precise-motion mechanism of the main employing of these devices, as utilize precision lead screw pair of nut, roll/slide guide rail, worm-and-wheel gear etc. as the conversion regime of power and motion, owing to there is the problems such as gap, friction, too many levels motion, the each side such as its kinematic accuracy, positioning precision have been difficult to meet the demands.
Due to piezo ceramic element have response rapidly, exert oneself large, displacement resolution is high, data-collection rate is high and the advantage such as compact conformation, researchist has utilized it to develop considerable microminiature precise-motion mechanism both at home and abroad, and has shown wide application prospect in each field.
Therefore, adopt novel piezoelectric driver, a kind of precision of design research and development is higher, and the in-situ tensile test instrument of test better effects if is very necessary.
Summary of the invention
The object of the present invention is to provide a kind of original position stretching experimental apparatus based on looper type piezoelectric actuator, the present invention has overcome traditional drive unit as common electric machine, feed screw nut, macroscopical large-size components such as worm and gear is difficult to the defect that meets accuracy requirement and have cumulative errors, adopt a kind of novel piezoelectric actuator as driver element, there is precision high, it is convenient to control, cost is low, the advantages such as good test effect, can carry out the test of trans-scale in-situ tensile load to macroscopical standard and non-standard test specimen, crackle in test specimen fracture process is produced, in-situ observation is carried out in expansion and fracture, for further mechanical property and the crackle generation mechanism of fracture of research material provide more accurate, scientific and effective proving installation.
Above-mentioned purpose of the present invention is achieved through the following technical solutions:
The present invention is by base, the first track base, the first back-moving spring, stator, the second back-moving spring, bilinear bearing seat, the second track base, the second clamp skewback, the second linear bearing, the second guide rail, the second clamping spring, displacement transducer, first single linear axis bearing, the 3rd linear bearing, test specimen, the first right fixture, the 3rd clamping spring, the 3rd track base, the 3rd clamp skewback, tailstock, pulling force sensor, pulling force sensor seat, bolt, fastening bolt, the second right fixture, the 4th track base, the 4th clamp skewback, the first guide rail, the 4th clamping spring, the 4th reset bolt, drive piezoelectric stack, the first left fixture, the 4th linear bearing, the second left fixture, second single linear axis bearing, the first clamp skewback, the first reset bolt, the first clamping spring, mover, the first linear bearing, the second reset bolt and the 3rd reset bolt form.
Described stator is secured by bolts on base; The first track base, the second track base, the 3rd track base, the 4th track base are secured by bolts in respectively on stator; The first guide rails assembling, in the pilot hole of the first track base and the 4th track base, clamps by bolt; The second guide rails assembling, in the pilot hole of the second track base and the 3rd track base, clamps by bolt; The first linear bearing and the second linear bearing are installed on bilinear bearing seat by bolt, and the 3rd linear bearing is installed in first single linear axis bearing by bolt, and the 3rd linear bearing is installed in second single linear axis bearing by bolt; The 3rd linear bearing and the first linear bearing are assemblied in respectively on the first guide rail, and the second linear bearing and the 3rd linear bearing are assemblied in respectively on the second guide rail; Bilinear bearing seat, first single linear axis bearing and second single linear axis bearing are installed on mover by bolt respectively; Mover is installed in the cross slide way groove of stator, and the first clamp skewback, the second clamp skewback, the 3rd clamp skewback and the 4th clamp skewback are installed on respectively in the longitudinal rail groove of stator; The first clamping spring, the second clamping spring, the 3rd clamping spring and the 4th clamping spring are installed on respectively in the locating groove of stator and each clamp skewback; The first back-moving spring and the second back-moving spring are installed on respectively in the locating groove of stator and mover; Tailstock is installed on the afterbody of base, by bolt, locates, and by fastening bolt, clamps; Pulling force sensor seat is installed on tailstock by bolt; Pulling force sensor is installed on pulling force sensor seat by bolt; The second right fixture is installed on pulling force sensor by bolt, and the first right fixture is installed on the second right fixture by bolt; The second left fixture is installed on mover by bolt, and the first left fixture is installed on the second left fixture by bolt; Displacement transducer is installed on the second left fixture with bolt by sensor holder, and pull bar is installed on the second right fixture with bolt by draw-bar seat; The first reset bolt, the second reset bolt, the 3rd reset bolt and the 4th reset bolt are screwed and are connected with the 4th clamp skewback, and by the through hole on stator, stretch out stator both sides respectively with the first clamp skewback, the second clamp skewback, the 3rd clamp skewback by screw thread respectively.
Beneficial effect of the present invention is: adopted a kind of looper type piezoelectric actuator based on skewback clamp, can realize more accurate, the load that rate is higher respectively loads, overcome traditional macroscopical large scale device and be difficult to the defect that meets accuracy requirement and there is cumulative errors, can more effectively to crackle generation, expansion and fracture in test specimen fracture process, carry out in-situ observation, for further mechanical property and the crackle generation mechanism of fracture of research material provide more accurate proving installation.
Accompanying drawing explanation
Fig. 1 is schematic perspective view of the present invention.
Fig. 2 is clamping part schematic perspective view of the present invention.
Fig. 3 is drive part schematic perspective view of the present invention.
Fig. 4 is driver drives schematic diagram one of the present invention.
Fig. 5 is driver drives schematic diagram two of the present invention.
In figure: 1, base; 2, the first track base; 3, the first back-moving spring; 4, stator; 5, the second back-moving spring; 6, bilinear bearing seat; 7, the second track base; 8, the second clamp skewback; 9, the second linear bearing; 10, the second guide rail; 11, the second clamping spring; 12, displacement transducer; 13, first single linear axis bearing; 14, the 3rd linear bearing; 15, test specimen; 16, the first right fixture; 17, the 3rd clamping spring; 18, the 3rd track base; 19, the 3rd clamp skewback; 20, tailstock; 21, pulling force sensor; 22, pulling force sensor seat; 23, bolt; 24, fastening bolt; 25, the second right fixture; 26, the 4th track base; 27, the 4th clamp skewback; 28, the first guide rail; 29, the 4th clamping spring; 30, the 4th reset bolt; 31, drive piezoelectric stack; 32, the first left fixture; 33, the 4th linear bearing; 34, the second left fixture; 35, second single linear axis bearing; 36, the first clamp skewback; 37, the first reset bolt; 38, the first clamping spring; 39, mover; 40, the first linear bearing; 41, the second reset bolt; 42, the 3rd reset bolt.
Embodiment
Refer to Fig. 1, shown in Fig. 2 and Fig. 3, the present invention is by base 1, the first track base 2, the first back-moving spring 3, stator 4, the second back-moving spring 5, bilinear bearing seat 6, the second track base 7, the second clamp skewback 8, the second linear bearing 9, the second guide rail 10, the second clamping spring 11, displacement transducer 12, first single linear axis bearing 13, the 3rd linear bearing 14, test specimen 15, the first right fixture 16, the 3rd clamping spring 17, the 3rd track base 18, the 3rd clamp skewback 19, tailstock 20, pulling force sensor 21, pulling force sensor seat 22, bolt 23, fastening bolt 24, the second right fixture 25, the 4th track base 26, the 4th clamp skewback 27, the first guide rail 28, the 4th clamping spring 29, the 4th reset bolt 30, drive piezoelectric stack 31, the first left fixture 32, the 4th linear bearing 33, the second left fixture 34, second single linear axis bearing 35, the first clamp skewback 36, the first reset bolt 37, the first clamping spring 38, mover 39, the first linear bearing 40, the second reset bolt 41 and the 3rd reset bolt 42 form.
Described stator 4 is secured by bolts on base 1; The first track base 2, the second track base 7, the 3rd track base 18, the 4th track base 26 are secured by bolts in respectively on stator 4; The first guide rail 28 is installed in the pilot hole of the first track base 2 and the 4th track base 26, by bolt, clamps; The second guide rail 10 is installed in the pilot hole of the second track base 7 and the 3rd track base 18, by bolt, clamps; The first linear bearing 40 and the second linear bearing 9 are installed on bilinear bearing seat 6 by bolt, and the 3rd linear bearing 14 is installed in first single linear axis bearing 13 by bolt, and the 3rd linear bearing 33 is installed in second single linear axis bearing 35 by bolt; The 3rd linear bearing 33 and the first linear bearing 40 are assemblied in respectively on the first guide rail 28, and the second linear bearing 9 and the 3rd linear bearing 14 are assemblied in respectively on the second guide rail 10; The single linear axis bearing 13 of bilinear bearing seat 6, first and second single linear axis bearing 35 are installed on mover 39 by bolt respectively; Mover 39 is installed in the cross slide way groove of stator 4, and the first clamp skewback 36, the second clamp skewback 8, the 3rd clamp skewback 19 and the 4th clamp skewback 27 are installed on respectively in the longitudinal rail groove of stator 4; The first clamping spring 38, the second clamping spring 11, the 3rd clamping spring 17 and the 4th clamping spring 29 are installed on respectively in the locating groove of stator 4 and each clamp skewback; The first back-moving spring 3 and the second back-moving spring 5 are installed on respectively in the locating groove of stator 4 and mover 39; Tailstock 20 is installed on the afterbody of base 1, by bolt 23, locates, and by fastening bolt 24, clamps; Pulling force sensor seat 22 is installed on tailstock 20 by bolt; Pulling force sensor 21 is installed on pulling force sensor seat 22 by bolt; The second right fixture 25 is installed on pulling force sensor 21 by bolt, and the first right fixture 16 is installed on the second right fixture 25 by bolt; The second left fixture 34 is installed on mover 39 by bolt, and the first left fixture 32 is installed on the second left fixture 34 by bolt; Displacement transducer 12 is installed on the second left fixture 34 with bolt by sensor holder, and pull bar is installed on the second right fixture 25 with bolt by draw-bar seat; The first reset bolt 37, the second reset bolt 41, the 3rd reset bolt 42 and the 4th reset bolt 30 are screwed and are connected with the 4th clamp skewback 27, and by the through hole on stator 4, stretch out stator both sides respectively with the first clamp skewback 36, the second clamp skewback 8, the 3rd clamp skewback 19 by screw thread respectively.
As shown in Figure 4 and Figure 5, the present invention is in concrete test process, first, test specimen 15 is before carrying out extension test, need to adopt wire-electrode cutting and processing method trial-production place with the test specimen of stress weakness zone or precognition breach, and process and obtain can be used for the better surface smoothness that high resolving power micro-imaging is monitored by single-sided polishing, or obtain the microstructures such as metallographic by techniques such as chemical corrosions, then by test specimen 15 clampings between two fixtures of left and right, by adjusting the position of tailstock 20, make distance between two fixtures be suitable for the length of test specimen 15.Further, by adjusting the position of fixture and utilizing level meter and the detection of clock gauge guarantees coplanarity and the accurate location in test specimen 15 test processs.After ready, by special-purpose drive power supply for piezoelectric ceramics for driving piezoelectric stack 31 that driving signal is provided, the elongation displacement of test specimen 15 is picked up by displacement transducer 12, pulling force in this process is picked up by pulling force sensor 21, and two paths of signals is by analog to digital conversion and carry out sending into computing machine after necessary signal condition.In the whole process of test, test specimen 15 deformation damage situation of material under load is carried out dynamic monitoring by high magnification imaging system, and document image simultaneously, the important mechanics parameters such as stress-strain curve, elastic modulus, yield strength and tensile strength that also can Real-time Obtaining exosyndrome material mechanical property in conjunction with host computer debugging software.
Claims (1)
1. the original position stretching experiment instrument based on looper type piezoelectric actuator, is characterized in that: be by base (1), the first track base (2), the first back-moving spring (3), stator (4), the second back-moving spring (5), bilinear bearing seat (6), the second track base (7), the second clamp skewback (8), the second linear bearing (9), the second guide rail (10), the second clamping spring (11), displacement transducer (12), first single linear axis bearing (13), the 3rd linear bearing (14), test specimen (15), the first right fixture (16), the 3rd clamping spring (17), the 3rd track base (18), the 3rd clamp skewback (19), tailstock (20), pulling force sensor (21), pulling force sensor seat (22), bolt (23), fastening bolt (24), the second right fixture (25), the 4th track base (26), the 4th clamp skewback (27), the first guide rail (28), the 4th clamping spring (29), the 4th reset bolt (30), drive piezoelectric stack (31), the first left fixture (32), the 4th linear bearing (33), the second left fixture (34), second single linear axis bearing (35), the first clamp skewback (36), the first reset bolt (37), the first clamping spring (38), mover (39), the first linear bearing (40), the second reset bolt (41) and the 3rd reset bolt (42) form,
Described stator (4) is secured by bolts on base (1); The first track base (2), the second track base (7), the 3rd track base (18), the 4th track base (26) are secured by bolts in respectively on stator (4); The first guide rail (28) is installed in the pilot hole of the first track base (2) and the 4th track base (26), by bolt, clamps; The second guide rail (10) is installed in the pilot hole of the second track base (7) and the 3rd track base (18), by bolt, clamps; The first linear bearing (40) and the second linear bearing (9) are installed on bilinear bearing seat (6) by bolt, it is upper that the 3rd linear bearing (14) is installed on first single linear axis bearing (13) by bolt, and the 3rd linear bearing (33) is installed in second single linear axis bearing (35) by bolt; It is upper that the 3rd linear bearing (33) and the first linear bearing (40) are assemblied in respectively the first guide rail (28), and the second linear bearing (9) and the 3rd linear bearing (14) are assemblied in respectively on the second guide rail (10); Bilinear bearing seat (6), first single linear axis bearing (13) and second single linear axis bearing (35) are installed on mover (39) by bolt respectively; Mover (39) is installed in the cross slide way groove of stator (4), and the first clamp skewback (36), the second clamp skewback (8), the 3rd clamp skewback (19) and the 4th clamp skewback (27) are installed on respectively in the longitudinal rail groove of stator (4); The first clamping spring (38), the second clamping spring (11), the 3rd clamping spring (17) and the 4th clamping spring (29) are installed on respectively in the locating groove of stator (4) and each clamp skewback; The first back-moving spring (3) and the second back-moving spring (5) are installed on respectively in the locating groove of stator (4) and mover (39); Tailstock (20) is installed on the afterbody of base (1), by bolt (23) location, by fastening bolt (24), clamps; Pulling force sensor seat (22) is installed on tailstock (20) by bolt; Pulling force sensor (21) is installed on pulling force sensor seat (22) by bolt; It is upper that the second right fixture (25) is installed on pulling force sensor (21) by bolt, and the first right fixture (16) is installed on the second right fixture (25) by bolt; It is upper that the second left fixture (34) is installed on mover (39) by bolt, and the first left fixture (32) is installed on the second left fixture (34) by bolt; It is upper that displacement transducer (12) is installed on the second left fixture (34) by sensor holder with bolt, and pull bar is installed on the second right fixture (25) with bolt by draw-bar seat; The first reset bolt (37), the second reset bolt (41), the 3rd reset bolt (42) and the 4th reset bolt (30) are screwed and are connected with the 4th clamp skewback (27), and by the through hole on stator (4), stretch out stator both sides respectively with the first clamp skewback (36), the second clamp skewback (8), the 3rd clamp skewback (19) by screw thread respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310524138.7A CN103528889B (en) | 2013-10-30 | 2013-10-30 | A kind of original position stretching experiment instrument based on looper type piezoelectric actuator |
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| CN201310524138.7A CN103528889B (en) | 2013-10-30 | 2013-10-30 | A kind of original position stretching experiment instrument based on looper type piezoelectric actuator |
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| CN103528889A true CN103528889A (en) | 2014-01-22 |
| CN103528889B CN103528889B (en) | 2015-09-09 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105137775A (en) * | 2015-07-30 | 2015-12-09 | 中国工程物理研究院应用电子学研究所 | Piezoelectric ceramic pretightening force and displacement online adjusting and testing device |
| CN106525571A (en) * | 2016-11-29 | 2017-03-22 | 大连海事大学 | Microscope extensograph adaptive to optical microscope |
| CN106920436A (en) * | 2017-03-03 | 2017-07-04 | 衢州学院 | A kind of mechanics of materials distortional stress demonstration teaching aid |
| CN110198141A (en) * | 2019-06-27 | 2019-09-03 | 华侨大学 | Differential clamp formula looper type piezoelectric linear motor |
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| CN101221106A (en) * | 2008-01-25 | 2008-07-16 | 北京工业大学 | Nano material drawing device in scanning electron microscope driven by piezoelectric ceramic piece |
| JP2008275404A (en) * | 2007-04-27 | 2008-11-13 | Kanazawa Univ | Torsion testing device |
| US20100186520A1 (en) * | 2008-11-12 | 2010-07-29 | Wheeler Iv Robert | Microtesting Rig with Variable Compliance Loading Fibers for Measuring Mechanical Properties of Small Specimens |
| CN102291039A (en) * | 2011-07-22 | 2011-12-21 | 吉林大学 | Multi-degree-of-freedom bionic piezoelectric driver |
| CN203519425U (en) * | 2013-10-30 | 2014-04-02 | 吉林大学 | In situ tensile experimental instrument based on inchworm-type piezoelectric actuator |
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- 2013-10-30 CN CN201310524138.7A patent/CN103528889B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008275404A (en) * | 2007-04-27 | 2008-11-13 | Kanazawa Univ | Torsion testing device |
| CN101221106A (en) * | 2008-01-25 | 2008-07-16 | 北京工业大学 | Nano material drawing device in scanning electron microscope driven by piezoelectric ceramic piece |
| US20100186520A1 (en) * | 2008-11-12 | 2010-07-29 | Wheeler Iv Robert | Microtesting Rig with Variable Compliance Loading Fibers for Measuring Mechanical Properties of Small Specimens |
| CN102291039A (en) * | 2011-07-22 | 2011-12-21 | 吉林大学 | Multi-degree-of-freedom bionic piezoelectric driver |
| CN203519425U (en) * | 2013-10-30 | 2014-04-02 | 吉林大学 | In situ tensile experimental instrument based on inchworm-type piezoelectric actuator |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137775A (en) * | 2015-07-30 | 2015-12-09 | 中国工程物理研究院应用电子学研究所 | Piezoelectric ceramic pretightening force and displacement online adjusting and testing device |
| CN106525571A (en) * | 2016-11-29 | 2017-03-22 | 大连海事大学 | Microscope extensograph adaptive to optical microscope |
| CN106525571B (en) * | 2016-11-29 | 2023-09-08 | 大连海事大学 | Microscope stretcher suitable for optical microscope |
| CN106920436A (en) * | 2017-03-03 | 2017-07-04 | 衢州学院 | A kind of mechanics of materials distortional stress demonstration teaching aid |
| CN106920436B (en) * | 2017-03-03 | 2019-02-15 | 衢州学院 | A kind of mechanics of materials distortional stress demonstration teaching aid |
| CN110198141A (en) * | 2019-06-27 | 2019-09-03 | 华侨大学 | Differential clamp formula looper type piezoelectric linear motor |
| CN110198141B (en) * | 2019-06-27 | 2024-02-02 | 华侨大学 | Differential clamping inchworm type piezoelectric linear motor |
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