CN107941605A - A kind of clamping device for preventing sheet metal unstability under tension and compression CYCLIC LOADING - Google Patents
A kind of clamping device for preventing sheet metal unstability under tension and compression CYCLIC LOADING Download PDFInfo
- Publication number
- CN107941605A CN107941605A CN201711242569.9A CN201711242569A CN107941605A CN 107941605 A CN107941605 A CN 107941605A CN 201711242569 A CN201711242569 A CN 201711242569A CN 107941605 A CN107941605 A CN 107941605A
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- Prior art keywords
- gas spring
- nitrogen gas
- installing plate
- grip block
- clamping device
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- 238000007906 compression Methods 0.000 title claims abstract description 27
- 230000006835 compression Effects 0.000 title claims abstract description 26
- 239000002184 metal Substances 0.000 title claims abstract description 25
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 89
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 79
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 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
- 238000000034 method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Clamps And Clips (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention provides a kind of clamping device for preventing sheet metal unstability under tension and compression CYCLIC LOADING, including supporting part, the nitrogen gas spring clamping part being arranged on the supporting part, front clamp plate and rear grip block, the front clamp plate and rear grip block are arranged in parallel, wherein, the nitrogen gas spring clamping part includes nitrogen gas spring installing plate and nitrogen gas spring, the nitrogen gas spring installing plate is fixed on the supporting part, the nitrogen gas spring includes cylinder body and the plunger being connected with the cylinder body, the cylinder body of the nitrogen gas spring is fixed on the nitrogen gas spring installing plate, the nitrogen gas spring installing plate is connected with sliding bar, the sliding bar passes through the rear grip block, front clamp plate, the sliding bar is equipped with retainer, grip block after described, front clamp plate is located at the plunger of the nitrogen gas spring, between retainer.The beneficial effects of the invention are as follows：Sample uniform force, reliability is high, and the control effect of unstability is preferable.
Description
Technical field
The present invention relates to clamping device, more particularly to a kind of clamping for preventing sheet metal unstability under tension and compression CYCLIC LOADING
Device.
Background technology
For automobile lightweight, high-strength steel material has been widely used in various body structural members.But with height
The rise of strong hardness of steel rank, rebound problem become more prominent, and die debugging is difficult, and accessory size quality lifting is difficult, because
The demand of this springback Prediction to high-strength steel part is more urgent.
When rebound typically occurs in the constraint of shaping end removal part, material undergoes Opposite side loading in this process.
Bauschinger effect occurs in Opposite side loading in ess-strain during different from simple tension, material, so rebound and material are non-
Stress strain response under linear loading is directly related.Needed using emulation Accurate Prediction part rebound under material nonlinearity load
Constitutive modeling, and the material parameter in constitutive model needs to determine by cyclic loading test.
For sheet metal, corrugation unstability is easily produced in compression process, therefore CYCLIC LOADING experiment is difficult to realize.Need
Arranging plate material clamping device is wanted, controls the generation of plate unstability during tension and compression CYCLIC LOADING.
The defects of current plate clamping device is：Using common wire spring, there is provided lateral pressure.What common wire spring provided
Lateral pressure is limited and precision is not high, and the length for adjusting spring manually adjusts the size of lateral pressure, can not ensure every bullet
Spring stress is identical, causes sample discontinuity, poor reliability, and the control effect of unstability is poor.
The content of the invention
In order to solve the problems of the prior art, the present invention provides one kind to prevent sheet metal under tension and compression CYCLIC LOADING
The clamping device of unstability.
The present invention provides a kind of clamping device for preventing sheet metal unstability under tension and compression CYCLIC LOADING, including support
Portion, the nitrogen gas spring clamping part being arranged on the supporting part, front clamp plate and rear grip block, the front clamp plate and rear clamping
Plate is arranged in parallel, wherein, the nitrogen gas spring clamping part includes nitrogen gas spring installing plate and nitrogen gas spring, the nitrogen gas spring peace
Loading board is fixed on the supporting part, and the nitrogen gas spring includes cylinder body and the plunger being connected with the cylinder body, the nitrogen bullet
The cylinder body of spring is fixed on the nitrogen gas spring installing plate, and the nitrogen gas spring installing plate is connected with sliding bar, the sliding bar
Through rear grip block, the front clamp plate, the sliding bar is equipped with retainer, and the rear grip block, front clamp plate are located at institute
State between the plunger of nitrogen gas spring, retainer.
As a further improvement on the present invention, the rear grip block, front clamp plate, nitrogen gas spring installing plate are parallel, institute
State nitrogen gas spring and be located at the front clamp plate, nitrogen gas spring installation perpendicular to the nitrogen gas spring installing plate, the rear grip block
Between plate.
As a further improvement on the present invention, the sliding bar is double threaded screw, and the both ends of the double threaded screw are set respectively
There is screw thread, the retainer is nut, and one end of the double threaded screw is threadedly coupled with the nitrogen gas spring installing plate, described double
The other end of head screw rod is connected with the nut.
As a further improvement on the present invention, the plunger of the nitrogen gas spring, nut compress rear grip block, the front clamp
Plate.
As a further improvement on the present invention, the centre of the double threaded screw is smooth cylinder.
As a further improvement on the present invention, it is arranged with spacing collar outside the double threaded screw.
As a further improvement on the present invention, the nitrogen gas spring installing plate is connected with guide post, and the guide post is described in
Grip block, front clamp plate afterwards.
As a further improvement on the present invention, the nitrogen gas spring installing plate is equipped with nitrogen gas spring limited block.
As a further improvement on the present invention, the rear grip block is equipped with square groove, and the square groove is equipped with sample
Limited block, is equipped between the square groove, sample limited block and adjusts cushion block.
As a further improvement on the present invention, the supporting part includes base and the supporting rod being arranged on the base,
The supporting rod, nitrogen gas spring installing plate are connected by height adjustment bolt.
The beneficial effects of the invention are as follows：Through the above scheme, sample uniform force, reliability is high, the control effect of unstability
Preferably.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram for preventing sheet metal clamping device of unstability under tension and compression CYCLIC LOADING of the present invention.
Fig. 2 is a kind of another visual angle for preventing sheet metal clamping device of unstability under tension and compression CYCLIC LOADING of the present invention
Schematic diagram.
Embodiment
The invention will be further described for explanation and embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1 to Figure 2, a kind of clamping device for preventing sheet metal unstability under tension and compression CYCLIC LOADING, including branch
Support part, the nitrogen gas spring clamping part being arranged on the supporting part, front clamp plate 1 and rear grip block 2,1 He of front clamp plate
Grip block 2 is arranged in parallel afterwards, wherein, the nitrogen gas spring clamping part includes nitrogen gas spring installing plate 3 and nitrogen gas spring 4, described
Nitrogen gas spring installing plate 3 is fixed on the supporting part, and the nitrogen gas spring 4 includes cylinder body and the column being connected with the cylinder body
Plug, the cylinder body of the nitrogen gas spring 4 are fixed on the nitrogen gas spring installing plate 3, and the nitrogen gas spring installing plate 3 is connected with cunning
Lever, the sliding bar sequentially pass through rear grip block 2, the front clamp plate 1, and the sliding bar is equipped with retainer, after described
Grip block 2, front clamp plate 1 are located between the plunger of the nitrogen gas spring 4, retainer.
As shown in Figure 1 to Figure 2, the rear grip block 2, front clamp plate 1, nitrogen gas spring installing plate 3 are parallel, the nitrogen
Spring 4 is located at the front clamp plate 1, nitrogen gas spring installing plate 3 perpendicular to the nitrogen gas spring installing plate 3, the rear grip block 2
Between.
As shown in Figure 1 to Figure 2, the sliding bar is double threaded screw 7, and the both ends of the double threaded screw 7 are respectively equipped with screw thread,
The retainer is nut 8, and one end of the double threaded screw 7 is threadedly coupled with the nitrogen gas spring installing plate 3, the double end spiral shell
The other end of bar 7 is connected with the nut 8, and the double threaded screw 7 sets four altogether, wherein two are arranged on rear grip block 2
Left side, in addition two right sides for being arranged on rear grip block 2.
As shown in Figure 1 to Figure 2, the plunger of the nitrogen gas spring 4, nut 8 compress rear grip block 2, the front clamp plate 1.
As shown in Figure 1 to Figure 2, the centre of the double threaded screw 7 is smooth cylinder.
As shown in Figure 1 to Figure 2, it is arranged with spacing collar 9 outside the double threaded screw 7.
As shown in Figure 1 to Figure 2, the nitrogen gas spring installing plate 3 is connected with guide post 10, and the guide post 10 sequentially passes through described
Grip block 2, front clamp plate 1 afterwards, the guide post 10 have two, are separately positioned on the left and right sides of rear grip block 2, the nitrogen bullet
The plunger of spring 4 withstands on the middle part of rear grip block 2.
As shown in Figure 1 to Figure 2, the nitrogen gas spring installing plate 3 is equipped with nitrogen gas spring limited block 5.
As shown in Figure 1 to Figure 2, the rear grip block 2 is equipped with two square grooves in left and right, and the square groove is equipped with sample
Limited block 6, is equipped between the square groove, sample limited block 6 and adjusts cushion block, adjust between front clamp plate 1, rear grip block 2
Distance, realize different-thickness sample CYCLIC LOADING experiment.
As shown in Figure 1 to Figure 2, the supporting part includes base 12 and the supporting rod 11 being arranged on the base 12, institute
State supporting rod 11, nitrogen gas spring installing plate 3 is connected by height adjustment bolt 14.
A kind of clamping device for preventing sheet metal unstability under tension and compression CYCLIC LOADING provided by the invention, front clamp plate 1,
Grip block 2, nitrogen gas spring installing plate 3 are rectangular slab afterwards.Nitrogen gas spring 4 is bolted on nitrogen gas spring installing plate 3.
On nitrogen gas spring installing plate 3, nitrogen gas spring 4 each side installs a nitrogen gas spring limited block 5 to prevent excess compression
Nitrogen gas spring 4 is caused to damage or burst.Sample 13 is clamped between front clamp plate 1 and rear grip block 2, and the sample of left and right two is spacing
Block 6 is separately fixed on rear grip block 2 in two square grooves in left and right, and positioning action is played to sample 13.Nitrogen gas spring installing plate
3rd, it is oriented to by guide post 10 between rear grip block 2 and front clamp plate 1, is slidably connected by double threaded screw 7.Often
A double threaded screw 7 is only threaded at both ends, and wherein one end is fixed on nitrogen gas spring installing plate 3, then sequentially passes through limit
Screw vent on position sleeve 9 and rear grip block 2 and front clamp plate 1, passes through tightening nut 8 in the other end of double threaded screw 7
Nitrogen gas spring 4 is withstood on rear grip block 2, so that the lateral pressure that nitrogen gas spring 4 provides is acted on sample 13, to avoid examination
13 Compressional buckling of sample.Be smooth cylinder among each double threaded screw 7, so as to fulfill front clamp plate 1 and rear grip block 2 relative to
Double threaded screw 7 is free to slide.11 one end of supporting rod is fixed on base 12, and the other end is fixed on nitrogen by height adjustment bolt 14
The rear side of gas spring installing plate 3, to eliminate the moment of flexure that clamping device is produced under the effect of gravity due to front and rear asymmetric.
A kind of clamping device for preventing sheet metal unstability under tension and compression CYCLIC LOADING provided by the invention, can make metal
Plate is less susceptible to unstability under tension and compression CYCLIC LOADING, more stable, and the measurement of material parameter is more accurate, and can realize different material
Thick sheet metal test.
A kind of clamping device for preventing sheet metal unstability under tension and compression CYCLIC LOADING provided by the invention, has following excellent
Point：
（1）By the perforate on front clamp plate 1, realize real using advanced digital picture DIC equipment during tension and compression are circulated
When measure strain variation in sample marking distance section, measurement result is more accurate；
（2）By staying the gap of 0.5mm between 6 side of sample limited block and sample holder end side surface, positioning action is played, side
Just the clamping of sample 13.Meanwhile in the longitudinal direction, gasket can be increased between sample limited block 6 and square groove to adjust
The distance between front clamp plate 2, rear grip block 1, realize the CYCLIC LOADING experiment of different-thickness sample；
（3）Lateral pressure is provided by using nitrogen gas spring 4, can realize the more stable CYCLIC LOADING experiment of more aximal deformation value；
（4）By the way that spacing collar 9 is sleeved on double threaded screw 7, realize to the spacing of rear grip block 2, so that it is guaranteed that each nut 8
Identical position is all screwed into, makes 13 stress of sample evenly；
（5）By being supported on rear side of clamping device using supporting rod 11, clamping device is eliminated due to front and rear asymmetric and in gravity
The lower moment of flexure produced of effect.
（6）Guide post 10 is set, realizes the guiding role to front clamp plate 1, rear grip block 2, while increases whole clamping dress
The rigidity put.
Above content is that a further detailed description of the present invention in conjunction with specific preferred embodiments, it is impossible to is assert
The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of not departing from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention's
Protection domain.
Claims (10)
- A kind of 1. clamping device for preventing sheet metal unstability under tension and compression CYCLIC LOADING, it is characterised in that：Including supporting part, set Nitrogen gas spring clamping part, front clamp plate and rear grip block on the supporting part are put, the front clamp plate and rear grip block are put down Row is set, wherein, the nitrogen gas spring clamping part includes nitrogen gas spring installing plate and nitrogen gas spring, the nitrogen gas spring installing plate It is fixed on the supporting part, the nitrogen gas spring includes cylinder body and the plunger being connected with the cylinder body, the nitrogen gas spring Cylinder body is fixed on the nitrogen gas spring installing plate, and the nitrogen gas spring installing plate is connected with sliding bar, and the sliding bar passes through Grip block, front clamp plate after described, the sliding bar are equipped with retainer, and the rear grip block, front clamp plate are located at the nitrogen Between the plunger of gas spring, retainer.
- 2. the clamping device according to claim 1 for preventing sheet metal unstability under tension and compression CYCLIC LOADING, its feature exist In：Grip block, front clamp plate, nitrogen gas spring installing plate are parallel after described, and the nitrogen gas spring is perpendicular to the nitrogen gas spring Installing plate, the rear grip block is between the front clamp plate, nitrogen gas spring installing plate.
- 3. the clamping device according to claim 2 for preventing sheet metal unstability under tension and compression CYCLIC LOADING, its feature exist In：The sliding bar is double threaded screw, and the both ends of the double threaded screw are respectively equipped with screw thread, and the retainer is nut, described One end of double threaded screw is threadedly coupled with the nitrogen gas spring installing plate, and the other end of the double threaded screw connects with the nut Connect.
- 4. the clamping device according to claim 3 for preventing sheet metal unstability under tension and compression CYCLIC LOADING, its feature exist In：Plunger, the nut of the nitrogen gas spring compress rear grip block, the front clamp plate.
- 5. the clamping device according to claim 2 for preventing sheet metal unstability under tension and compression CYCLIC LOADING, its feature exist In：The centre of the double threaded screw is smooth cylinder.
- 6. the clamping device according to claim 2 for preventing sheet metal unstability under tension and compression CYCLIC LOADING, its feature exist In：Spacing collar is arranged with outside the double threaded screw.
- 7. the clamping device according to claim 2 for preventing sheet metal unstability under tension and compression CYCLIC LOADING, its feature exist In：The nitrogen gas spring installing plate is connected with guide post, and the guide post passes through rear grip block, the front clamp plate.
- 8. the clamping device according to claim 1 for preventing sheet metal unstability under tension and compression CYCLIC LOADING, its feature exist In：The nitrogen gas spring installing plate is equipped with nitrogen gas spring limited block.
- 9. the clamping device according to claim 1 for preventing sheet metal unstability under tension and compression CYCLIC LOADING, its feature exist In：Grip block is equipped with square groove after described, and the square groove is equipped with sample limited block, the square groove, sample limited block Between be equipped with adjust cushion block.
- 10. the clamping device according to claim 1 for preventing sheet metal unstability under tension and compression CYCLIC LOADING, its feature exist In：The supporting part includes base and the supporting rod being arranged on the base, and the supporting rod, nitrogen gas spring installing plate pass through Height adjustment bolt connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711242569.9A CN107941605B (en) | 2017-11-30 | 2017-11-30 | Clamping device for preventing metal plate from being unstable under tension-compression cyclic loading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711242569.9A CN107941605B (en) | 2017-11-30 | 2017-11-30 | Clamping device for preventing metal plate from being unstable under tension-compression cyclic loading |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107941605A true CN107941605A (en) | 2018-04-20 |
| CN107941605B CN107941605B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711242569.9A Active CN107941605B (en) | 2017-11-30 | 2017-11-30 | Clamping device for preventing metal plate from being unstable under tension-compression cyclic loading |
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| Country | Link |
|---|---|
| CN (1) | CN107941605B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110823728A (en) * | 2019-11-22 | 2020-02-21 | 燕山大学 | Mechanical property detection device for cyclic loading of plates |
| CN111965011A (en) * | 2020-06-05 | 2020-11-20 | 湖南大学 | Clamping device for preventing compression instability of ultrahigh-strength steels with different thicknesses |
| CN113280291A (en) * | 2021-05-28 | 2021-08-20 | 温州市城南市政建设维修有限公司 | Street lamp convenient to fixed cable |
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| CN207650010U (en) * | 2017-11-30 | 2018-07-24 | 上汽通用五菱汽车股份有限公司 | A kind of clamping device preventing sheet metal unstability under tension and compression CYCLIC LOADING |
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| CN110823728B (en) * | 2019-11-22 | 2020-08-28 | 燕山大学 | Mechanical property detection device for cyclic loading of plates |
| CN111965011A (en) * | 2020-06-05 | 2020-11-20 | 湖南大学 | Clamping device for preventing compression instability of ultrahigh-strength steels with different thicknesses |
| CN113280291A (en) * | 2021-05-28 | 2021-08-20 | 温州市城南市政建设维修有限公司 | Street lamp convenient to fixed cable |
| CN113280291B (en) * | 2021-05-28 | 2023-03-24 | 温州市城南市政建设维修有限公司 | Street lamp convenient to fixed cable |
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|---|---|
| CN107941605B (en) | 2024-03-15 |
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