CN207300727U - A kind of thin plate pure bending test fixture - Google Patents
A kind of thin plate pure bending test fixture Download PDFInfo
- Publication number
- CN207300727U CN207300727U CN201721306792.0U CN201721306792U CN207300727U CN 207300727 U CN207300727 U CN 207300727U CN 201721306792 U CN201721306792 U CN 201721306792U CN 207300727 U CN207300727 U CN 207300727U
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- down support
- rolling clamp
- sample
- pure bending
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- 238000005452 bending Methods 0.000 title claims abstract description 30
- 238000012360 testing method Methods 0.000 title claims abstract description 20
- 238000005096 rolling process Methods 0.000 claims abstract description 22
- 238000002474 experimental method Methods 0.000 claims abstract description 12
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 2
- 239000007769 metal material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a kind of thin plate pure bending test fixture of metal material forming property testing field, to solve the problems, such as that current pure bending experiment is difficult to effectively simulate.It is made of the completely the same upper fixture system of structure type and lower chucking appliance system, upper and lower chucking appliance system is mainly made of hold-down support, rotation axis, rolling clamp, hold-down support is concave shape, hold-down support bottom is provided with the mounting hole of connection cupping machine, and hold-down support opening vertical edge has symmetrical bolt hole；Rotation axis passes through bolt hole and circular ring shape rolling clamp centre bore, and rolling clamp is fixed between hold-down support opening vertical edge and can be rotated freely around rotation axis；Rolling clamp is circular ring structure, and location hole and sample groove are provided with annulus, and sample groove is consistent with annular radii direction, and location hole is perpendicular to corresponding sample groove.The utility model ingehious design follow-up characteristic of rolling clamp, successfully solves additional stress and problem of stress concentration that fixture restraint strap comes.
Description
Technical field
It the utility model is related to a kind of thin plate pure bending test fixture of metal material forming property testing field.
Background technology
Bend test can reflect material cold bending performance, its force-bearing situation very phase with material in process of production
Seemingly.Pure bending experiment and conventional bending experiment have relatively big difference, and pure bending experiment refers to that the institute of material is loaded and carried for pure bending
Lotus, from the influence of shear stress, and traditional three point bending test bending moment load at the same time, sample still suffer from can not gram
The shear stress of clothes influences.Therefore, how eliminating the influence of shear stress and not introducing other new stress is pure bending examination
Where the core tested.The experiment of pure bending at present mainly has two kinds：1st, bend specimen is compressed axially, but specimen holder pair
The constraint of sample can cause sample stress concentration at fixture jaw, cause sample to be broken in advance at fixture jaw；2nd, 4 points
Bending, the shear stress that the effect of middle 2 point of applications causes to produce are cancelled out each other, are manufactured in middle two point of application sections
Go out the stress of pure bending, but this method is relatively specific for amount of deflection is smaller, rigidity is larger sample, examination can be approximately considered
Sample force-bearing situation is pure bending.But for the less thin specification steel plate of rigidity, sample deformation is larger under stress effect, geometry
Approximate condition has not existed, and still can be disturbed be subject to from fixture constraint, can not be equivalent to pure bending load.
Utility model content
The purpose of the utility model is to overcome prior art defect, there is provided a kind of thin plate pure bending test fixture.
What the technical solution of the utility model was realized in：A kind of thin plate pure bending test fixture, it is complete by structure type
Complete consistent upper fixture system and lower chucking appliance system composition, upper and lower chucking appliance system is mainly by hold-down support, rotation axis, rotating clamp
Tool composition, the hold-down support are concave shape, and hold-down support bottom is provided with the mounting hole of connection cupping machine, and hold-down support is opened
Mouth vertical edge has symmetrical bolt hole；The rotation axis passes through bolt hole and circular ring shape rolling clamp centre bore, will rotate
Fixture is fixed between hold-down support opening vertical edge and can be rotated freely around rotation axis；The rolling clamp is circular ring structure, circle
Location hole and sample groove are provided with ring, sample groove is consistent with annular radii direction, and location hole is perpendicular to corresponding sample groove, work
When bend specimen one end insertion sample groove in, with hold-down bolt screw in location hole in, bend specimen is withstood, passes through upper fixture
System and the opposite pressure of lower chucking appliance system complete pure bending experiment.
Preferably, one group of location hole and sample groove are provided with interval of 120 ° around annulus, three sample slot thicknesses are different, can
Suitable for the Thin Specs sample of different-thickness.
Preferably, three sample slot thicknesses are respectively 1.0mm, 2.0mm and 3.0mm, are respectively suitable for 0~1mm, 1
The Thin Specs sample of~2mm, 2~3mm.
The utility model ingehious design follow-up characteristic of rolling clamp, successfully solve that fixture restraint strap comes it is additional should
Power and problem of stress concentration, the whole stress for there was only testing machine axial direction of experiment, it is entirely avoided the generation of shear stress, Er Qieshi
It is wide with property, corresponding sample groove is designed with for the sample of 0.5~3.0mm, can meet the Thin Specs of different-thickness substantially
High strength steel plate experiment needs.
Brief description of the drawings
Fig. 1 is the utility model structure diagram.
Fig. 2 is hold-down support structure diagram.
Fig. 3 is rolling clamp schematic diagram.
In figure, 1- hold-down supports；2- rotation axis；3- rolling clamps；4- bend specimens；5- mounting holes；6- bolts hole；7- determines
Position hole；8- sample grooves；9- hold-down bolts.
Embodiment
It is further described below in conjunction with the accompanying drawings：
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of thin plate pure bending test fixture, by the completely the same upper fixture system of structure type
System and lower chucking appliance system composition, upper and lower chucking appliance system is mainly made of hold-down support 1, rotation axis 2, rolling clamp 3, described solid
It is concave shape to determine bearing 1, and 1 bottom of hold-down support is provided with the mounting hole 5 of connection cupping machine, the opening vertical edge point of hold-down support 1
Symmetrical bolt hole 6 is not provided with；The rotation axis 2 passes through 3 centre bore of bolt hole 6 and circular ring shape rolling clamp, by rolling clamp 3
Hold-down support 1 is fixed on to be open between vertical edge and can rotate freely around rotation axis 2；The rolling clamp 3 is circular ring structure, annulus
Surrounding is provided with one group of location hole 7 and sample groove 8 at interval of 120 °, and sample groove 8 is consistent with annular radii direction, and location hole 7 is vertical
When corresponding sample groove 8, work in one end insertion sample groove 8 of bend specimen 4, screwed in hold-down bolt 9 in location hole 7,
Bend specimen 4 is withstood, pure bending is completed by upper fixture system and the opposite pressure of lower chucking appliance system and tests, three samples
8 thickness of groove is respectively 1.0mm, 2.0mm and 3.0mm, is respectively suitable for the Thin Specs sample of 0~1mm, 1~2mm, 2~3mm.
Bend specimen 4 is put into corresponding sample groove 8, and pushed up with hold-down bolt 9 after installation is complete by the utility model
Tightly, you can start to test.During experiment, as the distance between upper and lower chucking appliance system is gradually reduced, bend specimen 4 occurs curved
With the rotation of 4 end of bend specimen servo rotary can occur for song, rolling clamp 3, and depth direction and the bending of sample groove 8 try
4 end of sample remains coincidence, can thus eliminate the additional stress and stress concentration phenomenon come due to fixture restraint strap, no
There are the interference of additional shear stress, whole experiment process is believed that the effect of only bending load, passes through testing machine sensor
The curve of power-displacement can be measured, so as to obtain the bending strength and bending features curve of the material.
Concrete operation step is as follows：1st, hold-down support 1 is fixed on common cupping machine by mounting hole 5, upper folder
Tool system is fixed on testing machine crossbeam, and lower chucking appliance system is fixed on experiment machine worktable；2nd, rotation axis 2 is each passed through fixation
The bolt hole 6 of bearing 1 and the centre bore of rolling clamp 3, ensure that rolling clamp 3 can be rotated freely around rotation axis 2；3rd, according to not
The thickness of stack pile bend specimen 4 chooses suitable sample groove 8, after selecting, by sample one end insertion sample groove 8, and with compression
Bolt 9 is held out against；4th, the rolling clamp 3 of upper end is rotated, is allowed to vertical, the horizontal depth of beam of Adjustment Tests machine is by under bend specimen 4
End is installed by same method；5th, starting cupping machine makes sample there are less precompression, at the same human intervention allow it is curved
Bent sample is to side slight curves, in order to avoid make 4 two-way unstability of bend specimen；6th, start cupping machine, make crossbeam with relatively slower
Degree moves down, and records power-displacement signal.
Claims (3)
- A kind of 1. thin plate pure bending test fixture, it is characterised in that：It is by the completely the same upper fixture system of structure type with Chucking appliance system forms, and upper and lower chucking appliance system is mainly made of hold-down support, rotation axis, rolling clamp, and the hold-down support is recessed Font, hold-down support bottom are provided with the mounting hole of connection cupping machine, and hold-down support opening vertical edge has symmetrical spiral shell Keyhole；The rotation axis passes through bolt hole and circular ring shape rolling clamp centre bore, and rolling clamp is fixed on hold-down support opening It can rotate freely between vertical edge and around rotation axis；The rolling clamp is circular ring structure, and location hole and sample groove are provided with annulus, Sample groove is consistent with annular radii direction, and location hole is perpendicular to corresponding sample groove, one end insertion examination of bend specimen during work In sample groove, screwed in hold-down bolt in location hole, bend specimen is withstood, applied by the way that upper fixture system and lower chucking appliance system are opposite Pressure completes pure bending experiment.
- A kind of 2. thin plate pure bending test fixture according to claim 1, it is characterised in that：At interval of 120 ° around annulus One group of location hole and sample groove are provided with, three sample slot thicknesses are different, are applicable to the Thin Specs sample of different-thickness.
- A kind of 3. thin plate pure bending test fixture according to claim 2, it is characterised in that：Three sample slot thickness difference For 1.0mm, 2.0mm and 3.0mm, the Thin Specs sample of 0~1mm, 1~2mm, 2~3mm are respectively suitable for.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721306792.0U CN207300727U (en) | 2017-10-11 | 2017-10-11 | A kind of thin plate pure bending test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721306792.0U CN207300727U (en) | 2017-10-11 | 2017-10-11 | A kind of thin plate pure bending test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207300727U true CN207300727U (en) | 2018-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721306792.0U Expired - Fee Related CN207300727U (en) | 2017-10-11 | 2017-10-11 | A kind of thin plate pure bending test fixture |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100236A (en) * | 2018-07-09 | 2018-12-28 | 武汉钢铁有限公司 | Thin gauge high-strength vehicle steel pure bending pilot system and test method |
| CN110044690A (en) * | 2019-05-17 | 2019-07-23 | 吉林大学 | Sample holding device and method for high temperature low frequency complex load load test |
| CN110389079A (en) * | 2019-08-16 | 2019-10-29 | 武汉钢铁有限公司 | A kind of sheet metal plain bending fatigue test method |
| CN111999187A (en) * | 2019-05-27 | 2020-11-27 | 上海电缆研究所有限公司 | Cable harness dynamic bending simulation device and bending durability test system |
| CN113740144A (en) * | 2020-05-27 | 2021-12-03 | 宝山钢铁股份有限公司 | Method for evaluating rolling property of sheet electrical steel |
| CN115308047A (en) * | 2022-10-11 | 2022-11-08 | 南通优尼科高分子材料科技有限公司 | Plastic plate bending detection equipment and method thereof |
| CN117782788A (en) * | 2024-02-28 | 2024-03-29 | 合肥工业大学 | Low-damage sheet tensile test device and method |
-
2017
- 2017-10-11 CN CN201721306792.0U patent/CN207300727U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100236A (en) * | 2018-07-09 | 2018-12-28 | 武汉钢铁有限公司 | Thin gauge high-strength vehicle steel pure bending pilot system and test method |
| CN109100236B (en) * | 2018-07-09 | 2021-01-12 | 武汉钢铁有限公司 | Thin-specification high-strength pure steel bending test system and test method for automobile |
| CN110044690A (en) * | 2019-05-17 | 2019-07-23 | 吉林大学 | Sample holding device and method for high temperature low frequency complex load load test |
| CN111999187A (en) * | 2019-05-27 | 2020-11-27 | 上海电缆研究所有限公司 | Cable harness dynamic bending simulation device and bending durability test system |
| CN110389079A (en) * | 2019-08-16 | 2019-10-29 | 武汉钢铁有限公司 | A kind of sheet metal plain bending fatigue test method |
| CN110389079B (en) * | 2019-08-16 | 2022-02-18 | 武汉钢铁有限公司 | Metal sheet plane bending fatigue test method |
| CN113740144A (en) * | 2020-05-27 | 2021-12-03 | 宝山钢铁股份有限公司 | Method for evaluating rolling property of sheet electrical steel |
| CN113740144B (en) * | 2020-05-27 | 2023-10-17 | 宝山钢铁股份有限公司 | Method for evaluating rollability of thin plate electrical steel |
| CN115308047A (en) * | 2022-10-11 | 2022-11-08 | 南通优尼科高分子材料科技有限公司 | Plastic plate bending detection equipment and method thereof |
| CN117782788A (en) * | 2024-02-28 | 2024-03-29 | 合肥工业大学 | Low-damage sheet tensile test device and method |
| CN117782788B (en) * | 2024-02-28 | 2024-06-14 | 合肥工业大学 | Low-damage sheet tensile test device and method |
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| CF01 | Termination of patent right due to non-payment of annual fee |