CN103528889B - A kind of original position stretching experiment instrument based on looper type piezoelectric actuator - Google Patents
A kind of original position stretching experiment instrument based on looper type piezoelectric actuator Download PDFInfo
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- CN103528889B CN103528889B CN201310524138.7A CN201310524138A CN103528889B CN 103528889 B CN103528889 B CN 103528889B CN 201310524138 A CN201310524138 A CN 201310524138A CN 103528889 B CN103528889 B CN 103528889B
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Abstract
The invention discloses a kind of original position stretching experiment instrument based on looper type piezoelectric actuator, belong to field of in-situ mechanical property test.Primarily of driver element, grip unit, support unit and the part such as input and control module composition, wherein driver element is a looper type piezoelectric actuator based on skewback clamp; Grip unit has an adjustable tailstock, can regulate initial distance between two fixtures according to the concrete condition of test specimen; Support unit has the optical axis guide rail be parallel to each other for a pair, to alleviate the stressed deviation of driver mover; Input and control module are made up of an accurate draw bar displacement sensor and an accurate S type pulling force sensor.The present invention adopts a kind of novel piezoelectric actuator as driver element, have precision high, control convenient, the advantages such as cost is low, the test of trans-scale in-situ tensile load can be carried out to the standard of macroscopic view and non-standard test specimen, in-situ observation is carried out to the crackle generation in test specimen fracture process, expansion and fracture.
Description
Technical field
The present invention relates to a kind of original position stretching experiment instrument based on looper type piezoelectric actuator, belong to field of in-situ mechanical property test.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
Very large difference is there is in the Micro Mechanical Properties of material with the classical mechanics performance of macroscopic view.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, various test is had for above-mentioned material property parameter, as pulling method, compression method, shearing method, torsional technique, bending method, Using Nanoindentation and eardrum method etc., wherein original position stretching method of testing more comprehensively can embody the mechanical property of material, can be analyzed the mechanical property such as break limit, elastic modulus of material by real-time stress-strain curve more intuitively.
At present, Jilin University have developed some original position stretching Mechanics Performance Testing devices, and achieves good effect.These devices mainly adopt traditional precise-motion mechanism, as utilized 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, its each side such as kinematic accuracy, positioning precision has 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, domestic and international researchist has utilized it to develop considerable microminiature precise-motion mechanism, 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, instant invention overcomes traditional drive unit as common electric machine, feed screw nut, macroscopical large-size components such as worm and gear is difficult to the defect meeting 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, the test of trans-scale in-situ tensile load can be carried out to the standard of macroscopic view and non-standard test specimen, crackle in test specimen fracture process is produced, in-situ observation is carried out in expansion and fracture, provide more accurate for the mechanical property of further research material and crackle produce mechanism of fracture, 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, first track base, first back-moving spring, stator, second back-moving spring, bilinear bearing seat, second track base, second clamp skewback, second linear bearing, second guide rail, second clamping spring, displacement transducer, first single linear axis bearing, 3rd linear bearing, test specimen, first right fixture, 3rd clamping spring, 3rd track base, 3rd clamp skewback, tailstock, pulling force sensor, pulling force sensor seat, bolt, fastening bolt, second right fixture, 4th track base, 4th clamp skewback, first guide rail, 4th clamping spring, 4th reset bolt, drive piezoelectric stack, first left fixture, 4th linear bearing, second left fixture, second single linear axis bearing, first clamp skewback, first reset bolt, first clamping spring, mover, first linear bearing, second reset bolt and the 3rd reset bolt composition.
Described stator is secured by bolts on base; First track base, the second track base, the 3rd track base, the 4th track base are fixed on stator respectively by bolt; First guide rails assembling, in the pilot hole of the first track base and the 4th track base, is clamped by bolt; Second guide rails assembling, in the pilot hole of the second track base and the 3rd track base, is clamped by bolt; 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; 3rd linear bearing and the first linear bearing are assemblied on the first guide rail respectively, and the second linear bearing and the 3rd linear bearing are assemblied on the second guide rail respectively; Bilinear bearing seat, first single linear axis bearing and second single linear axis bearing are installed on mover respectively by bolt; 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 in the longitudinal rail groove of stator respectively; First clamping spring, the second clamping spring, the 3rd clamping spring and the 4th clamping spring are installed in the locating groove of stator and each clamp skewback respectively; First back-moving spring and the second back-moving spring are installed in the locating groove of stator and mover respectively; Tailstock is installed on the afterbody of base, is located by bolt, is clamped by fastening bolt; Pulling force sensor seat is installed on tailstock by bolt; Pulling force sensor is installed on pulling force sensor seat by bolt; 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; 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 by sensor holder bolt, and pull bar is installed on the second right fixture by draw-bar seat bolt; First reset bolt, the second reset bolt, the 3rd reset bolt and the 4th reset bolt to screw with the first clamp skewback, the second clamp skewback, the 3rd clamp skewback and the 4th clamp skewback respectively by screw thread and are connected, and stretch out stator both sides respectively by the through hole on stator.
Beneficial effect of the present invention is: have employed a kind of looper type piezoelectric actuator based on skewback clamp, can realize more accurate, the load that rate is higher respectively loads, overcome the defect that traditional macroscopical large scale device is difficult to meet accuracy requirement and have cumulative errors, can the more effective crackle in test specimen fracture process produce, expansion and fracture carry out in-situ observation, provide more accurate proving installation for the mechanical property of further research material and crackle produce mechanism of fracture.
Accompanying drawing explanation
Fig. 1 is schematic perspective view of the present invention.
Fig. 2 is clamping part isometric schematic diagram 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, piezoelectric stack is driven; 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, first track base 2, first back-moving spring 3, stator 4, second back-moving spring 5, bilinear bearing seat 6, second track base 7, second clamp skewback 8, second linear bearing 9, second guide rail 10, second clamping spring 11, displacement transducer 12, first single linear axis bearing 13, 3rd linear bearing 14, test specimen 15, first right fixture 16, 3rd clamping spring 17, 3rd track base 18, 3rd clamp skewback 19, tailstock 20, pulling force sensor 21, pulling force sensor seat 22, bolt 23, fastening bolt 24, second right fixture 25, 4th track base 26, 4th clamp skewback 27, first guide rail 28, 4th clamping spring 29, 4th reset bolt 30, drive piezoelectric stack 31, first left fixture 32, 4th linear bearing 33, second left fixture 34, second single linear axis bearing 35, first clamp skewback 36, first reset bolt 37, first clamping spring 38, mover 39, first linear bearing 40, second reset bolt 41 and the 3rd reset bolt 42 form.
Described stator 4 is secured by bolts on base 1; First track base 2, second track base 7, the 3rd track base 18, the 4th track base 26 are fixed on stator 4 respectively by bolt; First guide rail 28 is installed in the pilot hole of the first track base 2 and the 4th track base 26, is clamped by bolt; Second guide rail 10 is installed in the pilot hole of the second track base 7 and the 3rd track base 18, is clamped by bolt; 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; 3rd linear bearing 33 and the first linear bearing 40 are assemblied on the first guide rail 28 respectively, and the second linear bearing 9 and the 3rd linear bearing 14 are assemblied on the second guide rail 10 respectively; The single linear axis bearing 13 of bilinear bearing seat 6, first and second single linear axis bearing 35 are installed on mover 39 respectively by bolt; Mover 39 is installed in the cross slide way groove of stator 4, and the first clamp skewback 36, second clamp skewback 8, the 3rd clamp skewback 19 and the 4th clamp skewback 27 are installed in the longitudinal rail groove of stator 4 respectively; First clamping spring 38, second clamping spring 11, the 3rd clamping spring 17 and the 4th clamping spring 29 are installed in the locating groove of stator 4 and each clamp skewback respectively; First back-moving spring 3 and the second back-moving spring 5 are installed in the locating groove of stator 4 and mover 39 respectively; Tailstock 20 is installed on the afterbody of base 1, is located by bolt 23, is clamped by fastening bolt 24; 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; 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; 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 by sensor holder bolt, and pull bar is installed on the second right fixture 25 by draw-bar seat bolt; First reset bolt 37, second reset bolt 41, the 3rd reset bolt 42 and the 4th reset bolt 30 to screw with the first clamp skewback 36, second clamp skewback 8, the 3rd clamp skewback 19 and the 4th clamp skewback 27 respectively by screw thread and are connected, and stretch out stator both sides respectively by the through hole on stator 4.
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, wire-electrode cutting and processing method trial-production place need be adopted with stress weakness zone or the test specimen predicting breach, and obtain by single-sided polishing process the better surface smoothness that can be used for the monitoring of high resolving power micro-imaging, or obtain the microstructures such as metallographic by techniques such as chemical corrosions, then by test specimen 15 clamping between the fixture of left and right two, make the distance between two fixtures be suitable for the length of test specimen 15 by adjusting the position of tailstock 20.Further, by adjusting the position of fixture and utilizing the detection of level meter and clock gauge to ensure coplanarity in test specimen 15 test process and accurate location.After ready, drive singal is provided for driving piezoelectric stack 31 by special drive power supply for piezoelectric ceramics, the elongation displacement of test specimen 15 is picked up by displacement transducer 12, pulling force is in the process picked up by pulling force sensor 21, and two paths of signals is by analog to digital conversion and send into computing machine after carrying out necessary signal condition.In the whole process of test, test specimen 15 deformation damage situation of material under load effect carries out dynamic monitoring by high magnification imaging system, and image can be recorded simultaneously, also can stress-strain curve, elastic modulus, the important mechanics parameter such as yield strength and tensile strength of Real-time Obtaining exosyndrome material mechanical property in conjunction with host computer debugging software.
Claims (1)
1. based on an original position stretching experiment instrument for looper type piezoelectric actuator, it is characterized in that: be by base (1), first track base (2), first back-moving spring (3), stator (4), second back-moving spring (5), bilinear bearing seat (6), second track base (7), second clamp skewback (8), second linear bearing (9), second guide rail (10), second clamping spring (11), displacement transducer (12), first single linear axis bearing (13), 3rd linear bearing (14), test specimen (15), first right fixture (16), 3rd clamping spring (17), 3rd track base (18), 3rd clamp skewback (19), tailstock (20), pulling force sensor (21), pulling force sensor seat (22), bolt (23), fastening bolt (24), second right fixture (25), 4th track base (26), 4th clamp skewback (27), first guide rail (28), 4th clamping spring (29), 4th reset bolt (30), drive piezoelectric stack (31), first left fixture (32), 4th linear bearing (33), second left fixture (34), second single linear axis bearing (35), first clamp skewback (36), first reset bolt (37), first clamping spring (38), mover (39), first linear bearing (40), second reset bolt (41) and the 3rd reset bolt (42) composition,
Described stator (4) is secured by bolts on base (1); First track base (2), the second track base (7), the 3rd track base (18), the 4th track base (26) are fixed on stator (4) respectively by bolt; First guide rail (28) is installed in the pilot hole of the first track base (2) and the 4th track base (26), is clamped by bolt; Second guide rail (10) is installed in the pilot hole of the second track base (7) and the 3rd track base (18), is clamped by bolt; First linear bearing (40) and the second linear bearing (9) are installed on bilinear bearing seat (6) by bolt, 3rd linear bearing (14) is installed on first single linear axis bearing (13) by bolt, and the 3rd linear bearing (33) is installed on second single linear axis bearing (35) by bolt; 3rd linear bearing (33) and the first linear bearing (40) are assemblied on the first guide rail (28) respectively, and the second linear bearing (9) and the 3rd linear bearing (14) are assemblied on the second guide rail (10) respectively; Bilinear bearing seat (6), first single linear axis bearing (13) and second single linear axis bearing (35) are installed on mover (39) respectively by bolt; 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 in the longitudinal rail groove of stator (4) respectively; First clamping spring (38), the second clamping spring (11), the 3rd clamping spring (17) and the 4th clamping spring (29) are installed in the locating groove of stator (4) and each clamp skewback respectively; First back-moving spring (3) and the second back-moving spring (5) are installed in the locating groove of stator (4) and mover (39) respectively; Tailstock (20) is installed on the afterbody of base (1), by bolt (23) location, is clamped by fastening bolt (24); 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; 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; 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) by sensor holder bolt, and pull bar is installed on the second right fixture (25) by draw-bar seat bolt; First reset bolt (37), the second reset bolt (41), the 3rd reset bolt (42) and the 4th reset bolt (30) to screw with the first clamp skewback (36), the second clamp skewback (8), the 3rd clamp skewback (19) and the 4th clamp skewback (27) respectively by screw thread and are connected, and stretch out stator both sides respectively by the through hole on stator (4).
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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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| 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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| CN103528889A CN103528889A (en) | 2014-01-22 |
| CN103528889B true CN103528889B (en) | 2015-09-09 |
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| CN105137775B (en) * | 2015-07-30 | 2018-12-28 | 中国工程物理研究院应用电子学研究所 | A kind of piezoelectric ceramics pretightning force and displacement on-line control and test device |
| CN106525571B (en) * | 2016-11-29 | 2023-09-08 | 大连海事大学 | Microscope stretcher suitable for optical microscope |
| CN106920436B (en) * | 2017-03-03 | 2019-02-15 | 衢州学院 | A kind of mechanics of materials distortional stress demonstration teaching aid |
| CN110198141B (en) * | 2019-06-27 | 2024-02-02 | 华侨大学 | Differential clamping inchworm type piezoelectric linear motor |
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| JP4953126B2 (en) * | 2007-04-27 | 2012-06-13 | 国立大学法人金沢大学 | Torsion test equipment |
| CN100587459C (en) * | 2008-01-25 | 2010-02-03 | 北京工业大学 | Nano material drawing device in scanning electron microscope driven by piezoelectric ceramic piece |
| US8297130B2 (en) * | 2008-11-12 | 2012-10-30 | The United States Of America As Represented By The Secretary Of The Air Force | Microtesting rig with variable compliance loading fibers for measuring mechanical properties of small specimens |
| CN102291039B (en) * | 2011-07-22 | 2013-10-09 | 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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