CN202502018U - Double-shaft material tensile test device - Google Patents
Double-shaft material tensile test device Download PDFInfo
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- CN202502018U CN202502018U CN2012201544095U CN201220154409U CN202502018U CN 202502018 U CN202502018 U CN 202502018U CN 2012201544095 U CN2012201544095 U CN 2012201544095U CN 201220154409 U CN201220154409 U CN 201220154409U CN 202502018 U CN202502018 U CN 202502018U
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Abstract
The utility model provides a double-shaft material tensile test device which comprises a frame, a first lead screw, a second lead screw, a first driving mechanism and a second driving mechanism. The double-shaft material tensile test device can realize bidirectional tensioning for test pieces according to different proportions effectively, and particularly can realize synchronous tensioning for crossed test pieces accurately due to the fact that the same ball screw with two sides different in screwing directions is utilizes in each tensioning direction, and accordingly precision of test results is increased.
Description
Technical field
The utility model belongs to mechanics of materials technical field of measurement and test, is specifically related to a kind of biaxial material tensile test apparatus.
Background technology
Since Plate Theory was set up, growing field had been applied to plate and shell structure, for example Aero-Space aspect, industrial aspect etc.
In plate and shell structure research, the research of bidirectional stress structure also is a focus, and for example: aspect Aero-Space, because the singularity of space environment, many space containers all are the bidirectional stress structures; Aspect industrial Sheet Metal Processing, because the complicacy of industrial sheet forming and deformation process, many sheet materials also are bidirectional stress in process.Therefore, the bidirectional stress structure of research material has very important realistic meaning.
Since the forties in last century, increasing people begins to be devoted to study biaxial tensile test.But because the complicacy of two-way stretch mechanism design, biaxial tensile test is still a still unsolved problem in the world.
Scholars have studied dissimilar biaxial tensile test methods at different times, and for example: two under the unilateral stretching draw protruding the expanding of test, film twoly to draw two the drawing of test, pressure vessel to test and cruciform specimen pair draws test etc.Draw test can the most intuitively and the most directly reflect the biaxial stress state of test specimen because cruciform specimen is two, so also be the experimental study method that current many researchists stress most.
At present, the employed test apparatus of cruciform specimen biaxial tensile test mainly comprises two types: i.e. mechanical biaxial tension test unit and fluid pressure type bidirectional tensile tester.Wherein, the fluid pressure type bidirectional tensile tester uses limitation bigger, and the prior mechanical bidirectional tensile tester is identical to the two-way stretch ratio of cruciform specimen, has also limited the application of mechanical biaxial tension test unit thus.
The utility model content
To the defective that prior art exists, the utility model provides a kind of biaxial material tensile test apparatus, and this biaxial material tensile test apparatus can carry out the two-way stretch of different proportion to test specimen, thereby has enlarged the range of application of biaxial material tensile test apparatus.
The technical scheme that the utility model adopts is following:
The utility model provides a kind of biaxial material tensile test apparatus, comprising: frame, first screw mandrel, second screw mandrel, first driving mechanism and second driving mechanism; Said frame comprises first outer wall and second outer wall that lateral symmetry is provided with, and vertical symmetrically arranged the 3rd outer wall and the wall all round; One end and the clutch shaft bearing seat of said first screw mandrel are rotationally connected; Said clutch shaft bearing seat is fixedly installed in the said first outer wall place; The other end of said first screw mandrel and second bearing seat are rotationally connected; Said second bearing seat is fixedly installed in the said second outer wall place, and the other end of said first screw mandrel also connects said first driving mechanism; One end and the 3rd bearing seat of said second screw mandrel are rotationally connected; Said the 3rd bearing seat is fixedly installed in said the 3rd outer wall place; The other end of said second screw mandrel and the 4th bearing seat are rotationally connected; Said the 4th bearing seat is fixedly installed in the said wall place all round, and the other end of said second screw mandrel also connects said second driving mechanism; Said first screw mandrel and said second screw mandrel are the cruciform setting; Also be symmetrical set first screw thread and second screw thread opposite with said first thread rotary orientation in the both sides of said first screw mandrel; At first nut of said first screw thread place installation with said first threads engaged; At second nut of said second screw thread place installation with said second threads engaged; Said first nut surface fixed installation first anchor clamps, said second nut surface fixed installation second anchor clamps; Also be symmetrical set the 3rd screw thread and four screw thread opposite with said the 3rd thread rotary orientation in the both sides of said second screw mandrel; At three nut of said the 3rd screw thread place installation with said the 3rd threads engaged; At four nut of said the 4th screw thread place installation with said the 4th threads engaged; Said the 3rd nut surface fixed installation the 3rd anchor clamps, said the 4th nut surface fixed installation the 4th anchor clamps.
Preferably, said first driving mechanism comprises: first speed reduction unit and first motor that links with said first speed reduction unit, one end; The other end of said first speed reduction unit is connected through the other end of first shaft coupling with said first screw mandrel; Said second driving mechanism comprises: second speed reduction unit and second motor that links with said second speed reduction unit, one end; The other end of said second speed reduction unit is connected through the other end of second shaft coupling with said second screw mandrel.
Preferably, said first screw mandrel and said second screw mandrel are ball screw.
Preferably, said first anchor clamps comprise: base, gland and secure component; The lower surface of said base is fixedly connected with said first nut, and the upper surface of said base removably connects through said secure component and said gland.
Preferably, said secure component is a bolt.
Preferably, the upper surface at said base also is equipped with boss; And the surface of said boss and the lower surface of said gland all are equipped with slip-resistant texture.
Preferably, all the structure with said first anchor clamps is identical for said second anchor clamps, said the 3rd anchor clamps and said the 4th anchor clamps.
Preferably, also comprise: first carriage, second carriage, the 3rd carriage and the 4th carriage; Said first anchor clamps and said first outer wall are slidingly connected through said first carriage; Said second anchor clamps and said second outer wall are slidingly connected through said second carriage; Said the 3rd anchor clamps and said the 3rd outer wall are slidingly connected through said the 3rd carriage; Said the 4th anchor clamps and said wall all round are slidingly connected through said the 4th carriage.
Preferably, said first carriage comprises: first guide rail, second guide rail, first slide block and second slide block; Said first guide rail and said first slide block are suitable, and said second guide rail and said second slide block are suitable; Said first guide rail and said second guide rail are installed in the said first outer wall place at place, the said first screw thread both sides respectively, and said first slide block and said second slide block are fixedly mounted on the both sides of said first anchor clamps respectively.
Preferably, all the structure with said first carriage is identical for said second carriage, said the 3rd carriage and said the 4th carriage.
The utility model also provides a kind of biaxial material stretching test method of biaxial material tensile test apparatus, may further comprise the steps:
Horizontal two ends of cruciform specimen are fixed through said first anchor clamps and said second anchor clamps respectively, vertical two ends of cruciform specimen are fixed through said the 3rd anchor clamps and said the 4th anchor clamps respectively;
Open said first driving mechanism and said second driving mechanism; Under the drive of said first driving mechanism; Said first screw mandrel rotation, thus make said first nut and said second nut carry out synchronous counter motion, thus the lateral length of the said cruciform specimen that stretches;
Under the drive of said second driving mechanism, said second screw mandrel rotation, thus make said the 3rd nut and said the 4th nut carry out synchronous counter motion, thus the longitudinal length of the said cruciform specimen that stretches.
The beneficial effect of the utility model is following:
Biaxial material tensile test apparatus that the utility model provides and biaxial material stretching test method; Can effectively realize two-way stretch to the test specimen different proportion; Especially owing on each group draw direction, adopted same ball-screw of the different rotation directions in both sides; Can realize synchro-draw accurately, improve the precision of test result cruciform specimen.
Description of drawings
Fig. 1 is the front view of the biaxial material tensile test apparatus that provides of the utility model;
Fig. 2 is the left view of the biaxial material tensile test apparatus that provides of the utility model;
Fig. 3 is the front view of anchor clamps in the biaxial material tensile test apparatus that provides of the utility model;
Fig. 4 is the left view of anchor clamps in the biaxial material tensile test apparatus that provides of the utility model;
Fig. 5 is the synoptic diagram of the utility model test with test specimen.
Embodiment
Below in conjunction with accompanying drawing biaxial material tensile test apparatus and the method that the utility model provides described in detail:
As shown in Figure 1, the utility model provides a kind of biaxial material tensile test apparatus, comprising: frame 1, first screw mandrel 2, second screw mandrel 3, first driving mechanism and second driving mechanism; Frame 1 comprises first outer wall 4 and second outer wall 5 that lateral symmetry is provided with, and vertical symmetrically arranged the 3rd outer wall 6 and the wall 7 all round; One end of first screw mandrel 2 is fixedly installed in first outer wall, 4 places through bearing seat, and the other end of first screw mandrel 2 is fixedly installed in second outer wall, 5 places through bearing seat, and the other end of first screw mandrel 2 also connects said first driving mechanism; One end of second screw mandrel 3 is fixedly installed in the 3rd outer wall 6 places through bearing seat, and the other end of second screw mandrel 3 is fixedly installed in wall 7 places all round through bearing seat, and the other end of second screw mandrel 3 also connects said second driving mechanism; First screw mandrel 2 and second screw mandrel 3 are the cruciform setting; Also be symmetrical set first screw thread and second screw thread opposite with said first thread rotary orientation in the both sides of first screw mandrel 2; Other positions of first screw mandrel are smooth screw mandrel; At first nut 8 of said first screw thread place installation with said first threads engaged; At second nut 9 of said second screw thread place installation with said second threads engaged, said first nut, 8 surface fixed installations, first anchor clamps, 10, the first anchor clamps 10 are slidingly connected through first carriage 11 with said first outer wall; Said second nut surface fixed installation second anchor clamps, said second anchor clamps and said second outer wall are slidingly connected through second carriage; Also be symmetrical set the 3rd screw thread and four screw thread opposite with said the 3rd thread rotary orientation in the both sides of said second screw mandrel; Other positions of second bar are smooth screw mandrel; At three nut of said the 3rd screw thread place installation with said the 3rd threads engaged; At four nut of said the 4th screw thread place installation with said the 4th threads engaged, said the 3rd nut surface fixed installation the 3rd anchor clamps, said the 3rd anchor clamps and said the 3rd outer wall are slidingly connected through the 3rd carriage; Said the 4th nut surface fixed installation the 4th anchor clamps, said the 4th anchor clamps and said the wall all round are slidingly connected through the 4th carriage.Wherein, first driving mechanism comprises: first speed reduction unit 12 and first motor 13 that links with said first speed reduction unit, 12 1 ends; The other end of said first speed reduction unit is connected with the other end of first screw mandrel 2 through first shaft coupling 14; Said second driving mechanism comprises: second speed reduction unit 15 and second motor 16 that links with said second speed reduction unit, 15 1 ends; The other end of said second speed reduction unit 15 is connected with the other end of said second screw mandrel 3 through second shaft coupling 17.Said first screw mandrel 2 all can be ball screw with said second screw mandrel 3.
In addition, in the utility model, first anchor clamps, second anchor clamps, the 3rd anchor clamps are identical with the 4th clamp structure, need be installed on the same surface level.For describing conveniently, be that example is introduced with the structure of first anchor clamps only below: first anchor clamps comprise: base 18, gland 19 and secure component 20; The lower surface of said base is fixedly connected with said first nut, and the upper surface of said base removably connects through said secure component and said gland.Wherein, said secure component can be bolt.Upper surface at said base also is equipped with boss; And the surface of said boss and the lower surface of said gland all are equipped with slip-resistant texture, through increasing slip-resistant texture, can strengthen the compress effect of anchor clamps to test specimen, reduce the relative slip of test specimen to anchor clamps.
Like Fig. 3 and shown in Figure 4, base 18, test specimen and gland 19 are fixed by hold-down bolt and five middle tightened bolt presses of the anchor clamps left and right sides.When test specimen is installed, at first should cruciform specimen be placed in correspondence position, the clamping hole that is about to test specimen aligns with the threaded hole of clamp base 9, anchor clamps gland correspondence is put together again.Utilize the spanner of hold-down bolt top to assemble, base, test specimen and gland are compressed, again five fastening bolts are passed corresponding installation the in five holes of anchor clamps, test specimen is further gripped.
Test used cruciform specimen synoptic diagram such as Fig. 5.Test specimen is the cross-shaped symmetrical structure, and each end clamping part all has five clamping holes, is used for gripping test specimen.
In the utility model; First carriage, second carriage, the 3rd carriage are identical with the 4th carriage structure; For describing conveniently, be that example is introduced with the structure of first carriage only below: first carriage comprises: first guide rail 21, second guide rail 22, first slide block 23 and second slide block 24; Said first guide rail and said first slide block are suitable, and said second guide rail and said second slide block are suitable; Said first guide rail and said second guide rail are installed in the said first outer wall place at place, the said first screw thread both sides respectively, and said first slide block and said second slide block are fixedly mounted on the both sides of said first anchor clamps respectively.
The biaxial material stretching test method that the utility model provides may further comprise the steps:
Horizontal two ends of cruciform specimen are fixed through said first anchor clamps and said second anchor clamps respectively, vertical two ends of cruciform specimen are fixed through said the 3rd anchor clamps and said the 4th anchor clamps respectively;
Open said first driving mechanism and said second driving mechanism; Under the drive of said first driving mechanism; Said first screw mandrel rotation, thus make said first nut and said second nut carry out synchronous counter motion, thus the lateral length of the said cruciform specimen that stretches;
Under the drive of said second driving mechanism, said second screw mandrel rotation, thus make said the 3rd nut and said the 4th nut carry out synchronous counter motion, thus the longitudinal length of the said cruciform specimen that stretches.
In addition, first driving mechanism and second driving mechanism can be controlled by computing machine, under computer control; First driving mechanism and second driving mechanism can synchronous operations, and first driving mechanism and second driving mechanism can be exported different rotating speed; First screw mandrel and second screw mandrel also can obtain different rotating speed accordingly; When first screw mandrel and the second screw mandrel rotating speed changed, the motion state of the nut of installing on the screw mandrel also changed, through the transmission of anchor clamps; Can change the extended state of cruciform specimen, that is: realize the stretching of control cruciform specimen different proportion on horizontal, vertical both direction at horizontal, vertical both direction.
Therefore; Biaxial material tensile test apparatus that the utility model provides and biaxial material stretching test method; Can effectively realize two-way stretch to the test specimen different proportion; Especially owing on each group draw direction, adopted same ball-screw of the different rotation directions in both sides, can realize synchro-draw accurately, improve the precision of test result cruciform specimen.
The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also should be looked the protection domain of the utility model.
Claims (10)
1. a biaxial material tensile test apparatus is characterized in that, comprising: frame, first screw mandrel, second screw mandrel, first driving mechanism and second driving mechanism; Said frame comprises first outer wall and second outer wall that lateral symmetry is provided with, and vertical symmetrically arranged the 3rd outer wall and the wall all round; One end and the clutch shaft bearing seat of said first screw mandrel are rotationally connected; Said clutch shaft bearing seat is fixedly installed in the said first outer wall place; The other end of said first screw mandrel and second bearing seat are rotationally connected; Said second bearing seat is fixedly installed in the said second outer wall place, and the other end of said first screw mandrel also connects said first driving mechanism; One end and the 3rd bearing seat of said second screw mandrel are rotationally connected; Said the 3rd bearing seat is fixedly installed in said the 3rd outer wall place; The other end of said second screw mandrel and the 4th bearing seat are rotationally connected; Said the 4th bearing seat is fixedly installed in the said wall place all round, and the other end of said second screw mandrel also connects said second driving mechanism; Said first screw mandrel and said second screw mandrel are the cruciform setting; Also be symmetrical set first screw thread and second screw thread opposite with said first thread rotary orientation in the both sides of said first screw mandrel; At first nut of said first screw thread place installation with said first threads engaged; At second nut of said second screw thread place installation with said second threads engaged; Said first nut surface fixed installation first anchor clamps, said second nut surface fixed installation second anchor clamps; Also be symmetrical set the 3rd screw thread and four screw thread opposite with said the 3rd thread rotary orientation in the both sides of said second screw mandrel; At three nut of said the 3rd screw thread place installation with said the 3rd threads engaged; At four nut of said the 4th screw thread place installation with said the 4th threads engaged; Said the 3rd nut surface fixed installation the 3rd anchor clamps, said the 4th nut surface fixed installation the 4th anchor clamps.
2. biaxial material tensile test apparatus according to claim 1 is characterized in that, said first driving mechanism comprises: first speed reduction unit and first motor that links with said first speed reduction unit, one end; The other end of said first speed reduction unit is connected through the other end of first shaft coupling with said first screw mandrel; Said second driving mechanism comprises: second speed reduction unit and second motor that links with said second speed reduction unit, one end; The other end of said second speed reduction unit is connected through the other end of second shaft coupling with said second screw mandrel.
3. biaxial material tensile test apparatus according to claim 1 is characterized in that, said first screw mandrel and said second screw mandrel are ball screw.
4. biaxial material tensile test apparatus according to claim 1 is characterized in that, said first anchor clamps comprise: base, gland and secure component; The lower surface of said base is fixedly connected with said first nut, and the upper surface of said base removably connects through said secure component and said gland.
5. biaxial material tensile test apparatus according to claim 4 is characterized in that, said secure component is a bolt.
6. biaxial material tensile test apparatus according to claim 4 is characterized in that, at the upper surface of said base boss is installed also; And the surface of said boss and the lower surface of said gland all are equipped with slip-resistant texture.
7. according to each described biaxial material tensile test apparatus of claim 4 to 6, it is characterized in that all the structure with said first anchor clamps is identical for said second anchor clamps, said the 3rd anchor clamps and said the 4th anchor clamps.
8. biaxial material tensile test apparatus according to claim 1 is characterized in that, also comprises: first carriage, second carriage, the 3rd carriage and the 4th carriage; Said first anchor clamps and said first outer wall are slidingly connected through said first carriage; Said second anchor clamps and said second outer wall are slidingly connected through said second carriage; Said the 3rd anchor clamps and said the 3rd outer wall are slidingly connected through said the 3rd carriage; Said the 4th anchor clamps and said wall all round are slidingly connected through said the 4th carriage.
9. biaxial material tensile test apparatus according to claim 8 is characterized in that, said first carriage comprises: first guide rail, second guide rail, first slide block and second slide block; Said first guide rail and said first slide block are suitable, and said second guide rail and said second slide block are suitable; Said first guide rail and said second guide rail are installed in the said first outer wall place at place, the said first screw thread both sides respectively, and said first slide block and said second slide block are fixedly mounted on the both sides of said first anchor clamps respectively.
10. biaxial material tensile test apparatus according to claim 9 is characterized in that, all the structure with said first carriage is identical for said second carriage, said the 3rd carriage and said the 4th carriage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201544095U CN202502018U (en) | 2012-04-12 | 2012-04-12 | Double-shaft material tensile test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201544095U CN202502018U (en) | 2012-04-12 | 2012-04-12 | Double-shaft material tensile test device |
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| CN202502018U true CN202502018U (en) | 2012-10-24 |
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| CN2012201544095U Expired - Fee Related CN202502018U (en) | 2012-04-12 | 2012-04-12 | Double-shaft material tensile test device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645371A (en) * | 2012-04-12 | 2012-08-22 | 北方工业大学 | Biaxial material tensile test device and method applying same |
| CN105758722A (en) * | 2016-02-26 | 2016-07-13 | 重庆大学 | Simple and stretching ratio adjustable type double-shaft synchronous stretching device and method |
| CN106501085A (en) * | 2016-12-27 | 2017-03-15 | 河南工程学院 | A kind of cylindrical fabric two-way stretchability tester |
| CN106706440A (en) * | 2016-12-27 | 2017-05-24 | 吉林大学 | High-temperature double-axis synchronous drawing mechanical property testing instrument and method |
| CN107782618A (en) * | 2017-09-19 | 2018-03-09 | 中北大学 | A kind of product tension test Experiments of Machanics equipment |
| CN109774110A (en) * | 2019-03-14 | 2019-05-21 | 上海昌凯机电科技有限公司 | A kind of thin film stretching device of high-efficiency heating |
-
2012
- 2012-04-12 CN CN2012201544095U patent/CN202502018U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645371A (en) * | 2012-04-12 | 2012-08-22 | 北方工业大学 | Biaxial material tensile test device and method applying same |
| CN102645371B (en) * | 2012-04-12 | 2015-11-11 | 北方工业大学 | Biaxial material tensile test and apply the method for this device |
| CN105758722A (en) * | 2016-02-26 | 2016-07-13 | 重庆大学 | Simple and stretching ratio adjustable type double-shaft synchronous stretching device and method |
| CN105758722B (en) * | 2016-02-26 | 2019-05-17 | 重庆大学 | A kind of easy, the adjustable Dual-shaft synchronous stretching device of stretch ratio and method |
| CN106501085A (en) * | 2016-12-27 | 2017-03-15 | 河南工程学院 | A kind of cylindrical fabric two-way stretchability tester |
| CN106706440A (en) * | 2016-12-27 | 2017-05-24 | 吉林大学 | High-temperature double-axis synchronous drawing mechanical property testing instrument and method |
| CN106501085B (en) * | 2016-12-27 | 2023-03-28 | 河南工程学院 | Two-way tensile property tester of tube-shape knitted fabric |
| CN106706440B (en) * | 2016-12-27 | 2023-09-01 | 吉林大学 | High-temperature biaxial synchronous stretching mechanical property testing instrument and testing method |
| CN107782618A (en) * | 2017-09-19 | 2018-03-09 | 中北大学 | A kind of product tension test Experiments of Machanics equipment |
| CN109774110A (en) * | 2019-03-14 | 2019-05-21 | 上海昌凯机电科技有限公司 | A kind of thin film stretching device of high-efficiency heating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20130412 |