CN102841012A - Tension-torsion test specimen fixture - Google Patents
Tension-torsion test specimen fixture Download PDFInfo
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- CN102841012A CN102841012A CN2012103475643A CN201210347564A CN102841012A CN 102841012 A CN102841012 A CN 102841012A CN 2012103475643 A CN2012103475643 A CN 2012103475643A CN 201210347564 A CN201210347564 A CN 201210347564A CN 102841012 A CN102841012 A CN 102841012A
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Abstract
The invention discloses a tension-torsion test specimen fixture, which comprises an upper chuck, a lower chuck and a tension-torsion test specimen, the upper chuck and the lower chuck are respectively provided with upper jaws and lower jaws, an upper clamped section of the tension-torsion test specimen is fixed by the upper jaws of the upper chuck, a lower clamped section of the tension-torsion test specimen is fixed by the lower jaws of the lower chuck, the upper clamped section of the tension-torsion test specimen is provided with upper test specimen key slots, the lower clamped section of the tension-torsion test specimen is provided with lower test specimen key slots, the upper jaws of the upper chuck are provided with upper jaw key slots corresponding to the upper test specimen key slots, the lower jaws of the lower chuck are provided with lower jaw key slots corresponding to the lower test specimen key slots, keys are mounted between the upper test specimen key slots and the upper jaw key slots, and keys are mounted between the lower test specimen key slots and the corresponding lower jaw key slots. The tension-torsion test specimen-clamping effect of the jaws of the tension-torsion test specimen fixture is good, the shapes of the clamped sections of the test specimen are not limited, the structure is simple, clamping does not need mechanical power, mechanical operation noise does not exist, the environment cannot be affected, and both the purchase cost and the use cost are low.
Description
Technical field
The present invention relates to a kind of pull and torsion test machine, relate in particular to test specimen and anchor clamps in a kind of pull and torsion test machine, belong to the material mechanical test machine technical field.
Background technology
In metal material mechanics experiment field; Pull and torsion test is a new things; Existing drawing turned round the experiment moment of torsion all below 50Nm, can realize with common tension test chuck, if but moment of torsion surpasses 200Nm; Even moment of torsion, just is easy to skid with existing testing machine chuck clamping test pieces when above to 1000Nm.The jaw of clamping metal material all adopts hard material and quenches; Be processed with various lines (like anti-skidding thread forms such as straight burr, twill, cross patterns) on the surface of contact of jaw and test specimen; When clamping with manpower; Jaw is very little to exerting pressure of test specimen, when test torque reaches the 200Nm left and right sides, will skid between jaw and the test specimen.In order to prevent to skid, the employing Hydromechanical chuck is also arranged at present, Hydromechanical chuck can produce bigger clamping force, can realize the experiment of high pulling torque test specimen, but the Hydromechanical chuck complex equipments, noise is big, and is difficult to the cleaning of the equipment that guarantees.If in the torsion test of high pulling torque without Hydromechanical chuck; Usually the way that adopts is that two gripping sections at test specimen mill into six side's (see figure 2)s or mill flat (see figure 3); But this test specimen is when machine work; Turning is that the branch two procedures is accomplished respectively with milling six sides (or milling flat), so test specimen is from process, just having produced the disalignment error.The experimenter knows that the test section of test specimen and gripping section all adopt right cylinder, and the experimental error of being done is minimum.To turn round the stress that biaxial stress test and stretching uniaxial stress test test specimen different and draw; In pull and torsion test, reverse and two power that stretch act on the test specimen simultaneously; Therefore, in doing pull and torsion test, be difficult to obtain unified with effective clamping the profile of test specimen at present.
Summary of the invention
Technical matters to be solved by this invention is: a kind of good clamping effect is provided, and unrestricted the drawing of test specimen gripping section profile turned round piece fixture
Technical solution of the present invention is:
A kind of drawing turned round piece fixture; Comprise upper grip, lower chuck and draw and turn round test specimen that said upper grip and lower chuck are respectively equipped with upper jaw and lower jaw, draw the upper and lower side of turning round test specimen to be respectively equipped with gripping section and following gripping section; The said gripping section of going up is fixed through said upper jaw; Said gripping section is down fixed through said lower jaw, and the said gripping section of going up is provided with the test specimen keyway, and said gripping section down is provided with down the test specimen keyway; Said upper jaw is provided with and the said corresponding upper jaw keyway of test specimen keyway of going up; Said lower jaw is provided with and the said corresponding lower jaw keyway of test specimen keyway down, between the said upper jaw keyway of last test specimen keyway and correspondence key is housed, and between the lower jaw keyway of following test specimen keyway and correspondence key is housed.
The said test specimen keyway of going up is 1 upward test specimen keyway, and said upper jaw is provided with the upper jaw keyway of 1 correspondence; Said test specimen keyway down is 1 following test specimen keyway, and said lower jaw is provided with the lower jaw keyway of 1 correspondence.
Said last test specimen keyway is 2 and goes up the test specimen keyways, goes up the both sides that the test specimen keyway is symmetricly set on said last gripping section for said 2, and said upper jaw is provided with the upper jaw keyway of 2 correspondences; Said test specimen keyway down is 2 following test specimen keyways, and said 2 following test specimen keyways are symmetricly set on the said both sides of gripping section down, and said lower jaw is provided with the lower jaw keyway of 2 correspondences.
Be positioned at the outside of said upper jaw and the outside of lower jaw and all be fixed with cover plate.
Said key is a flat key, or woodruff key, or wedge key, or tangential key.
Beneficial technical effects of the present invention: the present invention turns round that gripping section and following gripping section are respectively equipped with test specimen keyway and following test specimen keyway on the test specimen drawing; Be respectively equipped with corresponding upper jaw keyway and lower jaw keyway at upper jaw and lower jaw; Between last test specimen keyway and corresponding upper jaw keyway, and between test specimen keyway and the corresponding lower jaw keyway key is housed all down, draws to turn round and pass through key transmission moment of torsion between test specimen and the jaw (upper jaw, lower jaw); Jaw is turned round the test specimen good clamping effect to drawing; Prevent the appearance of testing machine chuck clamping test pieces skidding, test specimen gripping section profile does not receive the restriction of Any shape, and has solved and draw the concentricity problem of turning round test specimen.The present invention's novelty simple in structure need not machine power during clamping, do not have machinery operation noise and to the influence of environment.Acquisition cost and use cost are all low.
Description of drawings
1, Fig. 1 is a pull and torsion test machine structural representation of the present invention.
2, Fig. 2 turns round the 1st kind of structural drawing of test specimen for existing drawing.
3, Fig. 3 turns round the 2nd kind of structural drawing of test specimen for existing drawing.
4, Fig. 4 the present invention draws and turns round the test specimen structural drawing.
5, Fig. 5 upper jaw of the present invention (lower jaw) front view.
6, Fig. 6 is that the A-A of Fig. 5 is to cut-open view.
7, Fig. 7 the present invention left side half jaw (right half jaw) structural representation.
8, Fig. 8 draws for the embodiment of the invention 1 and turns round the test specimen front view.
9, Fig. 9 draws for the embodiment of the invention 1 and turns round the test specimen vertical view.
10, Figure 10 draws for the embodiment of the invention 2 and turns round the test specimen front view.
11, Figure 11 draws for the embodiment of the invention 2 and turns round the test specimen vertical view.
12, Figure 12 is the embodiment of the invention 1 upper grip (lower chuck) longitudinal section.
13, Figure 13 is that the B-B of Figure 12 is to cut-open view.
14, Figure 14 is the embodiment of the invention 2 upper grips (lower chuck) longitudinal sections.
15, Figure 15 is that the C-C of Figure 14 is to the sound cut-open view.
Among the figure: 1, reverse motor, 2, entablature, 3, upper grip, 4, leading screw, 5, lower chuck, 6, the chuck pin; 7, middle cross beam, 8, column, 9, lifting motor, 10, set nut, 11, platen, 12, handle; 13, base of the carrier head, 14, spring, 15, collet body, 16, left half jaw, 17, draw and turn round test specimen, 18, key; 19, go up the test specimen keyway, 20, upper jaw keyway (lower jaw keyway), 21, test specimen keyway down, 22, go up gripping section, 23, gripping section down; 24, cover plate, 25, bolt, 26, limited block, 27, push rod, 28, right half jaw.
Embodiment
Specify below in conjunction with embodiment and accompanying drawing.
Embodiment 1
Embodiment 1 is like Fig. 1; Fig. 4 to Fig. 9, Figure 12 and shown in Figure 13, a kind of drawing turned round piece fixture; Comprise upper grip 3, lower chuck 5 and draw and turn round test specimen 17; Said upper grip 3 is respectively equipped with upper jaw and lower jaw with lower chuck 5, draws the last gripping section 22 of turning round test specimen 17 to fix through the upper jaw of upper grip 3, draws the following gripping section 23 of turning round test specimen 17 to fix through the lower jaw of lower chuck 5; The said last gripping section 22 of turning round test specimen 17 that draws is provided with test specimen keyway 19; Following gripping section 23 is provided with down test specimen keyway 21, and the upper jaw of upper grip 3 is provided with and the said corresponding upper jaw keyway of test specimen keyway 19 of going up, and the lower jaw of lower chuck is provided with the lower jaw keyway corresponding with said time test specimen keyway 21; Between the said upper jaw keyway of last test specimen keyway 19 and correspondence key 18 is housed, between the said lower jaw keyway of following test specimen keyway 21 and correspondence key 18 is housed.Test specimen keyway 19 is 2 upward test specimen keyways on the embodiment 1; Said 2 last test specimen keyways are symmetricly set on the both sides of drawing the last gripping section 22 of turning round test specimen 17; The upper jaw of upper grip is provided with 2 and goes up the corresponding upper jaw keyways of test specimen keyway with said 2; In embodiment 1, upper jaw and lower jaw all are divided into left half jaw and right half jaw, and 2 upper jaw keyways that upper jaw is provided with lay respectively on left jaw and the right jaw.Said test specimen keyway 21 down is 2 following test specimen keyways; Said 2 following test specimen keyways 21 are symmetricly set on the both sides of drawing the following gripping section 23 of turning round test specimen 17; The lower jaw of lower chuck is provided with 2 lower jaw keyways corresponding with said 2 following test specimen keyways 21, and 2 lower jaw keyways that lower jaw is provided with lay respectively on the left jaw and right jaw of lower jaw.Be positioned at the outside of said upper jaw and the outside of lower jaw and all be fixed with cover plate 24; Cover plate 24 is fixed on the collet body 15 through bolt 25; When upper jaw (lower jaw) was turned round test specimen 17 and applied moment of torsion drawing, a left side half jaw of upper jaw (lower jaw) and right half jaw were under torsional interaction, and one of them half jaw (left half jaw or right half jaw) is inevitable outstanding toward inner rotary; Outstanding for fear of this rotation, adopt cover plate 24 to fix.Said key 18 is a flat key, or woodruff key, or wedge key, or tangential key.Present embodiment 1 preferred flat key.
The upper grip of the embodiment of the invention 1 is all the same with the structure of lower chuck, draws to turn round test specimen 17 and be the thick concentric right cylinders in middle thin two ends, draws the structure of the last gripping section 22 of turning round test specimen 17 and following gripping section 23 also all the same.Key length of the present invention and width can transmit moment of torsion by key according to the suitably adjustment of size of moment of torsion, even if the present invention draws the high pulling torque test specimen of turning round more than the piece fixture test 1000Nm also can not skid when test-piece torsion in concrete the experiment.
Use the present invention to draw when turning round piece fixture, release handle 12, spring 14 flicks limited block 26; Make upper jaw (lower jaw) opening; Be left half jaw with right half jaw about separate, put into to draw and turn round test specimen 17, hold handle 12 rotation platens 11; Platen 11 compressing push rods 27 promote limited block 26, make upper jaw (lower jaw) clamp to draw and turn round test specimen 17.Upper grip 3, lower chuck 5 clamp to draw with same action turns round test specimen 17.Upper grip 3 is rotated motion with reversing motor 1, and lifting motor 9 drives leading screw 4 and impels middle cross beam 7 to move down.Middle cross beam 7 connects lower chuck 5 with chuck pin 6 and moves downward vertically synchronously, begins to draw to turn round to test action.Draw and turn round test specimen 17 and upper grip 3, lower chuck 5 utilization keys are connected, and guarantee static relatively motion.
The pull and torsion test machine of the embodiment of the invention can adopt name to be called: have to draw and turn round and press the multifunctional material mechanics testing machine of turning round function, the patent No. is: ZL200910017478.4, Granted publication number are: the disclosed testing machine of CN101625296B.
Claims (5)
1. one kind is drawn and turns round piece fixture; Comprise upper grip (3), lower chuck (5) and draw and turn round test specimen (17); Said upper grip (3) and lower chuck (5) are respectively equipped with upper jaw and lower jaw; Draw the upper and lower side of turning round test specimen (17) to be respectively equipped with gripping section (22) and following gripping section (23), the said gripping section (22) of going up is fixed through said upper jaw, and said gripping section (23) is down fixed through said lower jaw; It is characterized in that: the said gripping section (22) of going up is provided with test specimen keyway (19); Said gripping section (23) down is provided with down test specimen keyway (21), and said upper jaw is provided with and the said corresponding upper jaw keyway of test specimen keyway (19) of going up, and said lower jaw is provided with and the said corresponding lower jaw keyway of test specimen keyway down; Between the said upper jaw keyway of last test specimen keyway (19) and correspondence key (18) is housed, between the lower jaw keyway of following test specimen keyway (21) and correspondence key (18) is housed.
2. turn round piece fixture according to said a kind of the drawing of claim 1, it is characterized in that: the said test specimen keyway (19) of going up is 1 upward test specimen keyway, and said upper jaw is provided with the upper jaw keyway of 1 correspondence; Said test specimen keyway (21) down is 1 following test specimen keyway, and said lower jaw is provided with the lower jaw keyway of 1 correspondence.
3. turn round piece fixture according to said a kind of the drawing of claim 1; It is characterized in that: the said test specimen keyway (19) of going up is 2 upward test specimen keyways; Said 2 last test specimen keyways are symmetricly set on said both sides of going up gripping section (22), and said upper jaw is provided with the upper jaw keyway of 2 correspondences; Said test specimen keyway (21) down is 2 following test specimen keyways, and said 2 following test specimen keyways are symmetricly set on the said both sides of gripping section (23) down, and said lower jaw is provided with the lower jaw keyway of 2 correspondences.
4. turn round piece fixture according to claim 1,2 or 3 said a kind of drawing, it is characterized in that: be positioned at the outside of said upper jaw and the outside of lower jaw and all be fixed with cover plate (24).
5. turn round piece fixture according to said a kind of the drawing of claim 4, it is characterized in that: said key (18) is a flat key, or woodruff key, or wedge key, or tangential key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103475643A CN102841012A (en) | 2012-09-07 | 2012-09-07 | Tension-torsion test specimen fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103475643A CN102841012A (en) | 2012-09-07 | 2012-09-07 | Tension-torsion test specimen fixture |
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| CN102841012A true CN102841012A (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012103475643A Pending CN102841012A (en) | 2012-09-07 | 2012-09-07 | Tension-torsion test specimen fixture |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181037A (en) * | 2014-09-01 | 2014-12-03 | 济南时代试金试验机有限公司 | Screw-thread steel bar clamping device |
| CN105651596A (en) * | 2016-03-23 | 2016-06-08 | 济南时代试金试验机有限公司 | Assistant stretching tool for directly clamping steel wire rope |
| CN106644702A (en) * | 2016-12-21 | 2017-05-10 | 北京航空航天大学 | High-temperature fatigue test clamp and method capable of continuously adjusting blade check section stress distribution |
| CN110044740A (en) * | 2019-04-22 | 2019-07-23 | 东南大学 | Measuring method, application, device and the fixture of cable steel wire corrosion fatigue damage rule |
| CN113640106A (en) * | 2021-08-12 | 2021-11-12 | 上海交通大学 | Axial tension-compression high-temperature fatigue test fixture and test method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2723984Y (en) * | 2004-07-16 | 2005-09-07 | 攀钢集团攀枝花钢铁研究院 | Clamping tank type combined holder |
| CN101092041A (en) * | 2007-05-22 | 2007-12-26 | 浙江林学院 | Machine for twist raw bamboo, and dedicated clamp |
| CN101251454A (en) * | 2008-03-28 | 2008-08-27 | 西安工业大学 | Concentric retaining sleeve of torsional specimen |
| CN201740696U (en) * | 2010-06-21 | 2011-02-09 | 西安工业大学 | Device for clamping tensile test piece |
| CN102519788A (en) * | 2011-12-22 | 2012-06-27 | 浙江大学台州研究院 | Tensile test chucking device of material performance testing machine |
| CN202886184U (en) * | 2012-09-07 | 2013-04-17 | 烟台力尔自动化设备有限公司 | Tension-torsion test piece clamp |
-
2012
- 2012-09-07 CN CN2012103475643A patent/CN102841012A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2723984Y (en) * | 2004-07-16 | 2005-09-07 | 攀钢集团攀枝花钢铁研究院 | Clamping tank type combined holder |
| CN101092041A (en) * | 2007-05-22 | 2007-12-26 | 浙江林学院 | Machine for twist raw bamboo, and dedicated clamp |
| CN101251454A (en) * | 2008-03-28 | 2008-08-27 | 西安工业大学 | Concentric retaining sleeve of torsional specimen |
| CN201740696U (en) * | 2010-06-21 | 2011-02-09 | 西安工业大学 | Device for clamping tensile test piece |
| CN102519788A (en) * | 2011-12-22 | 2012-06-27 | 浙江大学台州研究院 | Tensile test chucking device of material performance testing machine |
| CN202886184U (en) * | 2012-09-07 | 2013-04-17 | 烟台力尔自动化设备有限公司 | Tension-torsion test piece clamp |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181037A (en) * | 2014-09-01 | 2014-12-03 | 济南时代试金试验机有限公司 | Screw-thread steel bar clamping device |
| CN105651596A (en) * | 2016-03-23 | 2016-06-08 | 济南时代试金试验机有限公司 | Assistant stretching tool for directly clamping steel wire rope |
| CN106644702A (en) * | 2016-12-21 | 2017-05-10 | 北京航空航天大学 | High-temperature fatigue test clamp and method capable of continuously adjusting blade check section stress distribution |
| CN106644702B (en) * | 2016-12-21 | 2019-02-26 | 北京航空航天大学 | A kind of high temperature fatigue test clamp and method of continuously adjustable blade examination stress distribution |
| CN110044740A (en) * | 2019-04-22 | 2019-07-23 | 东南大学 | Measuring method, application, device and the fixture of cable steel wire corrosion fatigue damage rule |
| CN110044740B (en) * | 2019-04-22 | 2021-12-24 | 东南大学 | Method, application, device and clamp for measuring corrosion fatigue damage law of cable steel wire |
| CN113640106A (en) * | 2021-08-12 | 2021-11-12 | 上海交通大学 | Axial tension-compression high-temperature fatigue test fixture and test method |
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Application publication date: 20121226 |