CN212410263U - High-hardness low-plasticity plate tensile test fixture - Google Patents
High-hardness low-plasticity plate tensile test fixture Download PDFInfo
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- CN212410263U CN212410263U CN202020742054.6U CN202020742054U CN212410263U CN 212410263 U CN212410263 U CN 212410263U CN 202020742054 U CN202020742054 U CN 202020742054U CN 212410263 U CN212410263 U CN 212410263U
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Abstract
A tensile test fixture for a high-hardness low-plasticity plate relates to a tensile test fixture for a high-hardness low-plasticity plate, and comprises an upper chuck (1), a tensile sample (2), a sample horizontal limiting block (3) and a lower chuck (4), wherein the upper chuck, the tensile sample, the sample horizontal limiting block and the lower chuck are coaxially matched; the cylindrical part of the upper chuck (1) is clamped with a universal material testing machine; the lower clamping head (4) is clamped with the tensile sample (2) through an unclosed through hole, and after the lower clamping head (4) is connected with the tensile sample (2), a sample horizontal limiting block (3) is respectively arranged at the front and the back of a clamping section of the tensile sample (2) to clamp the tensile sample (2) to realize the limiting in the horizontal direction; the universal material testing machine clamps the upper clamping head and the lower clamping head to carry out loading test on the tensile sample. The utility model discloses can remove tensile sample drilling process from, avoid the stress concentration that should bore the appearance simultaneously, can also avoid appearing the phenomenon of skidding between universal material testing machine flat plate dop and high strength, high rigidity tensile sample in the tensile test process.
Description
Technical Field
The utility model relates to a sheet metal tensile test fixture especially relates to a high rigidity, high strength and low plasticity sheet metal tensile test fixture.
Background
With the development of the economic society, the development direction of steel materials is toward high strength. At present, a large amount of high-strength or ultrahigh-strength thin plate steel is used in an automobile body structure, and particularly, the use ratio of 1500 MPa-level hot formed steel is greatly increased. In addition, the currently developed sheet steel for automobiles is moving toward the 2000MPa class. The tensile test is the most basic and important test for testing the mechanical properties of materials, and the mechanical properties of the materials must be determined through the tensile test whether the materials are in a material development process or a material use process. For sheet or thin plate, a universal material tester generally uses a plate chuck or a pin method to hold a sample during a tensile test.
In general, the higher the strength of a metal material, the higher the hardness thereof, and the lower the plasticity thereof. When the tensile strength of the steel exceeds 1500MPa or more, the drilling of the sample becomes difficult, and the drilling breaks the continuity of the sample, causing stress concentration at the drilled hole, and the sample is easily broken at the drilled hole during the tensile test, resulting in failure of the tensile test. If the flat plate chuck is directly used for clamping, the hardness of the sample is too high, so that the flat plate chuck and the sample slide in the stretching process, and the failure of the tensile test can also be caused.
Disclosure of Invention
An object of the utility model is to provide a high rigidity low plasticity panel tensile test fixture, dop, tensile sample, sample horizontal stopper, the coaxial cooperation of lower dop part on this fixture, such tensile sample has removed the drilling process from, and the stress concentration of avoiding simultaneously appearing should drilling still can avoid the phenomenon of skidding, has guaranteed going on smoothly of high rigidity, high strength and low plasticity panel sample tensile test.
The utility model aims at realizing through the following technical scheme:
a high-hardness low-plasticity plate tensile test fixture comprises an upper clamp head, a lower clamp head, a sample horizontal limiting block and a flat plate tensile sample, wherein the components are coaxially matched. The upper chuck cylindrical part is clamped with the universal material testing machine; the through hole is not sealed by the upper clamping head and the tensile sample is clamped; after the upper clamping head is connected with the tensile sample, a sample horizontal limiting block is respectively arranged at the front and the back of the tensile sample clamping section to clamp the tensile sample to realize the limiting in the horizontal direction; the lower clamping head is clamped with the tensile sample through the unclosed through hole, and after the lower clamping head is connected with the tensile sample, a sample horizontal limiting block is respectively arranged at the front and the back of the tensile sample clamping section to clamp the tensile sample to realize the limiting in the horizontal direction. The loading and the test of the tensile test sample are realized by matching with a universal material testing machine.
The horizontal limiting block of the sample can be processed by high polymer materials, elastic rubber, organic glass or metal materials, and the horizontal limiting block of the sample can be further fastened by other modes.
The upper clamping head and the lower clamping head are clamped with the tensile test piece through the unclosed through hole; the shape of the unclosed through hole and the shape of the clamping section of the tensile sample can be adjusted according to test requirements, such as a wedge shape and the like, and meanwhile, the horizontal limiting block of the sample also needs to be correspondingly adjusted.
The size and shape of the upper clamping head and the lower clamping head can be adjusted according to the experiment requirement.
The utility model has the advantages and effects that:
1. the utility model discloses tensile sample drilling process can be removed from, the stress concentration that the while was avoided appearing should drilling.
2. The utility model discloses can avoid appearing the phenomenon of skidding between universal material testing machine flat plate dop and high strength, the high rigidity tensile sample in the tensile test process, guarantee going on smoothly of high rigidity, high strength and low plasticity panel material sample tensile test.
3. The utility model discloses simple structure, easy processing, low in production cost.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Part numbers in the figures: 1. the device comprises an upper clamping head, 2. a tensile sample, 3. a sample horizontal limiting block and 4. a lower clamping head.
Detailed Description
The present invention will be described in detail with reference to the embodiments shown in the drawings.
The utility model relates to a high hardness low plasticity panel tensile test fixture, which comprises an upper chuck 1, a tensile sample 2, a sample horizontal limiting block 3 and a lower chuck 4; the components are coaxially matched. The upper part of the upper clamping head 1 is cylindrical, so that the universal material testing machine can be conveniently clamped, the lower part of the upper clamping head 1 is a cuboid, an unclosed through hole which is close to the sample clamping section in shape is arranged in the middle, and the lowest surface of the through hole is opened, so that a tensile sample 2 can be conveniently clamped; the upper chuck 1 is clamped with the tensile sample 2 through the unclosed through hole; the sample horizontal limiting block 3 and the upper clamping head 1 do not close the through hole, the shape is consistent, the size is slightly small, the sample horizontal limiting block 3 is totally four, and the upper clamping head 1 and the lower clamping head 4 are respectively two; after the upper chuck 1 is connected with the tensile sample 2, a sample horizontal limiting block 3 is respectively arranged at the front and the back of a clamping section of the tensile sample 2 to clamp the tensile sample 2 to realize the limiting in the horizontal direction; the lower clamping head 4 is clamped with the tensile sample 2 through an unclosed through hole, and after the lower clamping head 4 is connected with the tensile sample 2, a sample horizontal limiting block 3 is respectively arranged at the front and the back of a clamping section of the tensile sample 2 to clamp the tensile sample 2 to realize the limiting in the horizontal direction. The tensile test of the high-hardness, high-strength and low-plasticity plate sample can be realized by matching with a universal material testing machine.
Example 1
As shown in figure 1, the utility model discloses can realize clamping and spacing to high rigidity low plasticity panel tensile sample, through dop about the universal material testing machine centre gripping, realize the loading and the experiment to tensile sample.
The set of high-hardness low-plasticity plate tensile test fixture comprises an upper clamp head 1, a tensile sample 2, a sample horizontal limiting block 3 and a lower clamp head 4; the components are coaxially matched. The cylindrical part of the upper chuck 1 is clamped with a universal material testing machine; the through hole is not sealed by the upper clamping head 1 and the tensile sample 2 are clamped; after the upper chuck 1 is connected with the tensile sample 2, a sample horizontal limiting block 3 is respectively arranged at the front and the back of a clamping section of the tensile sample 2 to clamp the tensile sample 2 to realize the limiting in the horizontal direction; the lower clamping head 4 is clamped with the tensile sample 2 through an unclosed through hole, and after the lower clamping head 4 is connected with the tensile sample 2, a sample horizontal limiting block 3 is respectively arranged at the front and the back of a clamping section of the tensile sample 2 to clamp the tensile sample 2 to realize the limiting in the horizontal direction. The upper clamping head and the lower clamping head are clamped through the universal material testing machine, so that loading and testing of the tensile test sample are realized. The tensile sample is not required to be punched, and the clamping is realized through a pin and a universal material testing machine. The tensile sample can be removed from the drilling process, and stress concentration caused by drilling is avoided. In addition, the slipping phenomenon between the flat plate chuck of the universal material testing machine and the high-strength and high-hardness tensile sample in the tensile test process can be avoided, and the tensile test of the high-hardness, high-strength and low-plasticity plate sample can be smoothly carried out.
Claims (2)
1. The high-hardness low-plasticity plate tensile test fixture is characterized by comprising an upper fixture head (1), a tensile sample (2), a sample horizontal limiting block (3) and a lower fixture head (4), wherein the upper fixture head, the tensile sample horizontal limiting block and the lower fixture head are coaxially matched; the cylindrical part of the upper chuck (1) is clamped with a universal material testing machine; the upper clamping head (1) does not seal the through hole and is clamped with the tensile sample (2); after the upper clamping head (1) is connected with the tensile sample (2), a sample horizontal limiting block (3) is respectively arranged at the front and the back of a clamping section of the tensile sample (2) to clamp the tensile sample (2) to realize the limiting in the horizontal direction; the lower clamping head (4) is clamped with the tensile sample (2) through an unclosed through hole, and after the lower clamping head (4) is connected with the tensile sample (2), a sample horizontal limiting block (3) is respectively arranged at the front and the back of a clamping section of the tensile sample (2) to clamp the tensile sample (2) to realize the limiting in the horizontal direction; the universal material testing machine clamps the upper clamping head and the lower clamping head to carry out loading test on the tensile sample.
2. The high-hardness low-plasticity sheet material tensile test fixture according to claim 1, wherein the upper fixture (1) and the lower fixture (4) are clamped with the tensile sample (2) through non-closed through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020742054.6U CN212410263U (en) | 2020-05-08 | 2020-05-08 | High-hardness low-plasticity plate tensile test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020742054.6U CN212410263U (en) | 2020-05-08 | 2020-05-08 | High-hardness low-plasticity plate tensile test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212410263U true CN212410263U (en) | 2021-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020742054.6U Expired - Fee Related CN212410263U (en) | 2020-05-08 | 2020-05-08 | High-hardness low-plasticity plate tensile test fixture |
Country Status (1)
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| CN (1) | CN212410263U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114750088A (en) * | 2022-04-08 | 2022-07-15 | 北航（四川）西部国际创新港科技有限公司 | Thin-wall sample test fixture |
| CN114892258A (en) * | 2022-05-23 | 2022-08-12 | 浙江工业大学 | Electrolytic polishing device and method for thinning flat plate tensile sample |
-
2020
- 2020-05-08 CN CN202020742054.6U patent/CN212410263U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114750088A (en) * | 2022-04-08 | 2022-07-15 | 北航（四川）西部国际创新港科技有限公司 | Thin-wall sample test fixture |
| CN114750088B (en) * | 2022-04-08 | 2024-02-20 | 北航（四川）西部国际创新港科技有限公司 | Thin-wall sample test fixture |
| CN114892258A (en) * | 2022-05-23 | 2022-08-12 | 浙江工业大学 | Electrolytic polishing device and method for thinning flat plate tensile sample |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210126 |