CN106969988A - A kind of high duty metal sheet material shearing force experimental provision and its method of testing - Google Patents
A kind of high duty metal sheet material shearing force experimental provision and its method of testing Download PDFInfo
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- CN106969988A CN106969988A CN201710329423.1A CN201710329423A CN106969988A CN 106969988 A CN106969988 A CN 106969988A CN 201710329423 A CN201710329423 A CN 201710329423A CN 106969988 A CN106969988 A CN 106969988A
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- fixed block
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- sheet material
- sheet metal
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- 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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The present invention relates to a kind of high duty metal sheet material shearing force experimental provision and its method of testing, one includes cope plate and lower template setting up and down, the cope plate is provided with more than one guide pin bushing, coordinate to run through in each guide pin bushing and be provided with a guide pillar, the guide pillar correspondence is fixed in the lower template, and the guide pin bushing is slided up and down along guide pillar；A left fixed block and right fixed block are also fixed between the upper module and lower module, a left insert and right insert are arranged between the left fixed block and right fixed block, sheet metal sample is arranged between the left insert and right insert；The upper surface of the sheet metal sample is also symmetrical to be provided with clip plate, and two clip plates are compacted on left fixed block and right fixed block through outer briquetting respectively.The beneficial effects of the present invention are：By driving cope plate to be moved up and down with respect to lower template, shearing mechanics experimental test is realized, and set-iron is fixed and clamped in test process.
Description
Technical field
The present invention relates to a kind of high duty metal sheet material shearing force experimental provision and its method of testing.
Background technology
In recent years, with the development of lightweighting materials and related forming technique, the application of high duty metal sheet material is increasingly
Extensively, such as AHSS plate, titanium alloy sheet.Sheet material would generally undergo big plastic deformation in plastic forming process
And complex diversion systen, the suddenly change of strain paths can produce very big influence to mechanical properties of sheet.Therefore carrying out
At the beginning of product design, it is necessary to mechanical property of the sheet material under the conditions of typical complex strain paths is tested, so that more preferably
Ground carries out the design and optimization of sheet forming technique.
Simple shear tests can be tested the plasticity performance of sheet material, added especially for sheet material forward and reverse
Plasticity performance under the conditions of load.Relative to conventional tensile compression test, it the advantage is that：Larger plasticity can be realized
Deformation is without occurring plastic instability.Therefore, this experimental method is more suitable for intensity height but the relatively low high intensity of elongation percentage
Sheet metal.
At present to the test device under the conditions of sheet material simple shear tests mainly for aluminium alloy or mild steel equal strength compared with
Low material.And for high duty metal sheet material, inadequate clamping force, sample sliding and device side then occur in experimentation
To skew, the failure behaviour such as sample rotational deformation.Therefore, for high duty metal sheet material plasticity power under the conditions of complex diversion systen
Learning performance can not be accurately measured and be characterized.
The content of the invention
The purpose of the present invention is to be filled for above weak point there is provided a kind of experiment of high duty metal sheet material shearing force
Put and its method of testing, it is convenient to realize shearing mechanics experimental test.
The present invention solves the scheme that is used of technical problem：A kind of high duty metal sheet material shearing force experimental provision,
Including cope plate and lower template setting up and down, the cope plate is provided with to coordinate in more than one guide pin bushing, each guide pin bushing and passed through
A guide pillar is equipped with, the guide pillar correspondence is fixed in the lower template, and the guide pin bushing is slided up and down along guide pillar；The upper module
A left fixed block and right fixed block are also fixed between lower module, is arranged between the left fixed block and right fixed block
One left insert and right insert, sheet metal sample is arranged between the left insert and right insert；The sheet metal sample
Upper surface is also symmetrical to be provided with clip plate, and two clip plates are compacted on left fixed block and right fixed block through outer briquetting respectively.
Further, the left fixed block is fixed on the cope plate through screw, and the right fixed block is fixed through screw
In on the lower module plate.
Further, the correspondence position punishment on the left fixed block, right fixed block, two clip plates and two outer plates
Not She You several screwed holes, two clip plates are locked on left fixed block and right fixed block through bolt respectively, for compressing gold
Belong to sheet coupon, and two outer plates are locked on left fixed block and right fixed block through bolt respectively, for compressing clip plate.
Further, the cope plate and lower template are arranged on a compressor, and the cope plate is fixed on the compression
On the compression sliding block of machine, the lower module is fixed in the fixed seat of the compressor, and the cope plate is through compressor drives edge
Sliding block is compressed to move up and down.
Further, the interior briquetting bottom surface is provided with the lines for increasing friction force with sheet metal sample contacts face.
Further, the guide pin bushing is four, is respectively arranged at corner edge on cope plate.
Further, be correspondingly provided with the inside of the left insert and right insert one be used for block set the recessed of sheet metal sample
Groove.
Further, the groove is tested contact surface and be provided with sheet metal is used for the lines of increasing friction force.
Further, the outer surface of the sheet metal sample is coated with chequered with black and white decorative pattern.
The present invention also provides the test side of a kind of one high duty metal sheet material shearing force experimental provision as described above
Method, comprises the following steps：
Step S1：Cope plate is fixed on the compression sliding block of compressor, and lower module is fixed on to the fixed seat of compressor
On, and left fixed block, right fixed block, left insert and right insert are connected, assembled；
Step S2：Chequered with black and white decorative pattern is coated with the outer surface of sheet metal sample；
Step S3：By sheet metal test sample card be located between left insert and right insert, and with the groove of left insert and right insert
It is engaged；
Step S4：Two clip plates are locked on left fixed block and right fixed block by bolt respectively, for compressing metallic plate
Material sample, and two outer plates are locked on left fixed block and right fixed block by bolt respectively, for compressing clip plate；
Step S5：It is moved upwardly or downwardly by driven compressor cope plate along compression sliding block, sheet metal sample is carried out just
To shearing loading or flip Trim loading, while being continuously shot using high-resolution optical camera outside observation sheet metal sample
The decorative pattern change procedure on surface, obtains sheet metal shearing mechanical performance data.
Compared with prior art, the present invention has following beneficial effect：Card is coordinated to set metallic plate by left insert and right insert
Material sample, is coordinated by clip plate and outer plate and compresses sheet metal sample；Simultaneously by the way that cope plate and lower template are arranged on
Shearing force experiment is tested on compressor, realizes that test sheet metal tests the mechanical property under positive and negative loading force, it is simple in construction,
Convenient operation.
Brief description of the drawings
Patent of the present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the front view of experimental provision provided in an embodiment of the present invention.
The sectional view that Fig. 2 is A-A in figure.
Fig. 3 is the structure decomposition figure of laboratory installation provided in an embodiment of the present invention.
In figure：
1- cope plates；2- lower templates；3- guide pin bushings；4- guide pillars；The left fixed blocks of 5-；The right fixed blocks of 6-；The left inserts of 7-；The right inserts of 8-；
9- clip plates；10- outer plates；11- sheet metal samples；12- die shanks.
Embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in Figures 1 to 3, a kind of high duty metal sheet material shearing force experimental provision of the present embodiment, including above divide into
The cope plate 1 and lower template 2 put, the cope plate 1 are provided with more than one guide pin bushing 3, each guide pin bushing 3 to coordinate to run through and are provided with
One guide pillar 4, the correspondence of guide pillar 4 is fixed in the lower template 2, and the guide pin bushing 3 is slided up and down along guide pillar 4；The upper module
Left a fixed block 5 and right fixed block 6 is also fixed between lower module, it is symmetrical between the left fixed block 5 and right fixed block 6
Provided with left an insert 7 and right insert 8, sheet metal sample 11 is arranged between the left insert 7 and right insert 8；The metal
The upper surface of sheet coupon 11 is also symmetrical to be provided with clip plate 9, and two clip plates 9 are compacted to left fixed block through outer briquetting respectively
5 and right fixed block 6 on.The left insert 7 and right insert 8 are arranged between left fixed block 5 and right fixed block 6, can be according to not
Same sheet metal sample 11 selects different inserts to be coordinated.
From the foregoing, the beneficial effects of the present invention are：The present invention is applied to the simple shear of high duty metal sheet material
Experiments of Machanics, sheet metal sample 11 is fixed on the groove between left insert 7 and right insert 8, and bottom portion of groove rubs provided with increase
The lines of power is wiped, is coordinated by clip plate 9 and outer plate 10 and is fixed, clip plate 9 connects with sheet metal sample 11
The lines of increasing friction force also is provided with contacting surface, one side sample is by the restriction effect of groove, the design of another aspect lines
Greatly increase frictional force, it is ensured that high-strength panel sample will not be slided under the loading environment of big shearing force；Can basis
The thickness of sheet metal sample 11 uses different inserts, so as to carry out the shearing experiment of different-thickness sheet material.The reality that the present invention is provided
Experiment device overall structure is simple, compact；Sample uses mechanical installation way, easy to operate.
In the present embodiment, the left fixed block 5 is fixed on the cope plate 1 through screw, and the right fixed block 6 is through spiral shell
Nail is fixed on the lower module plate.
In the present embodiment, pair on the left fixed block 5, right fixed block 6, two clip plates 9 and two outer plates 10
Answer and several screwed holes are respectively equipped with position, two clip plates 9 are locked at left fixed block 5 and right fixed block 6 through bolt respectively
On, for compressing sheet metal sample 11, and two outer plates 10 are locked at left fixed block 5 and right fixed block through bolt respectively
On 6, for compressing clip plate 9.
In the present embodiment, the cope plate 1 and lower template 2 are arranged on a compressor, and the cope plate 1 is fixed on institute
State on the compression sliding block of compressor, the lower module is fixed in the fixed seat of the compressor, the cope plate 1 is through compressor
Drives edge compression sliding block moves up and down.The outer end of the cope plate 1 and lower template 2 is respectively equipped with a die shank 12, the upper mould
Plate 1 is fixedly connected by the die shank 12 on cope plate 1 with the compression sliding block of compressor, and the lower template 2 passes through in lower template 2
Die shank 12 is fixedly connected with the fixed seat of compressor.
In the present embodiment, the interior briquetting bottom surface is provided with for increasing friction force with the contact surface of sheet metal sample 11
Lines.
In the present embodiment, the guide pin bushing 3 is four, is respectively arranged at corner edge on cope plate 1.Each guide pin bushing 3
It is respectively cooperating with being equipped with a guide pillar 4 so that cope plate 1 moves up and down along guide pillar 4.Led using four monoblock types of 4 guide pin bushing of guide pillar 3
To structure, when carrying out shearing motion, guide pillar 4 is slided up and down under the constraint of guide pin bushing 3 all the time, can prevent from shearing
Occurs sample rotational deformation caused by laterally offset in journey.
In the present embodiment, the inner side of the left insert 7 and right insert 8 is correspondingly provided with one and sets sheet metal sample for card
11 groove.
In the present embodiment, the groove is tested contact surface and be provided with sheet metal is used for the lines of increasing friction force.
In the present embodiment, the outer surface of the sheet metal sample 11 is coated with chequered with black and white decorative pattern.Pass through decorative pattern
The change of the sheet metal sample 11 after testing can preferably be observed.
The present invention also provides a kind of method of testing of high duty metal sheet material shearing force experimental provision as described above,
Comprise the following steps：
Step S1：Cope plate 1 is fixed on the compression sliding block of compressor, and lower module is fixed on to the fixed seat of compressor
On, and left fixed block 5, right fixed block 6, left insert 7 and right insert 8 are connected, assembled；
Step S2：Chequered with black and white decorative pattern is coated with the outer surface of sheet metal sample 11；
Step S3：Sheet metal sample 11 is arranged between left insert 7 and right insert 8, and with left insert 7 and right insert 8
Fit depressions；
Step S4：Two clip plates 9 are locked on left fixed block 5 and right fixed block 6 by bolt respectively, for compressing metal
Sheet coupon 11, and two outer plates 10 are locked on left fixed block 5 and right fixed block 6 by bolt respectively, for compressing
Clip plate 9；
Step S5：It is moved upwardly or downwardly by driven compressor cope plate 1 along compression sliding block, sheet metal sample 11 is carried out
Forward direction shearing loading or flip Trim loading, while being continuously shot observation sheet metal sample using high-resolution optical camera
The decorative pattern change procedure of 11 outer surfaces, obtains sheet metal shearing mechanical performance data.In step s 4, according to different metal plate
Material experiment applies different Bolt Tightening Forces, is coordinated by clip plate 9 and outer plate 10 and is compressed.
In summary, the present invention is provided a kind of high duty metal sheet material shearing force experimental provision and its method of testing,
It is simple in construction, it is easy to operate, it is easy to accomplish, it is widely used in the High-strength light-weight gold of Aero-Space, automobile and shipping industry
Belong to sheet material plasticity performance test requirement.
The object, technical solutions and advantages of the present invention are further described by above-listed preferred embodiment, are answered
Understand, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (10)
1. a kind of high duty metal sheet material shearing force experimental provision, it is characterised in that：Including cope plate setting up and down with
Template, the cope plate, which is provided with more than one guide pin bushing, each guide pin bushing to coordinate to run through, is provided with a guide pillar, the guide pillar correspondence
It is fixed in the lower template, the guide pin bushing is slided up and down along guide pillar；One is also fixed between the upper module and lower module
Left fixed block and right fixed block, a left insert and right insert, the left side are arranged between the left fixed block and right fixed block
Sheet metal sample is arranged between insert and right insert；The upper surface of the sheet metal sample is also symmetrical to be provided with internal pressure
Plate, two clip plates are compacted on left fixed block and right fixed block through outer briquetting respectively.
2. a kind of high duty metal sheet material shearing force experimental provision according to claim 1, it is characterised in that：The left side
Fixed block is fixed on the cope plate through screw, and the right fixed block is fixed on the lower module plate through screw.
3. a kind of high duty metal sheet material shearing force experimental provision according to claim 2, it is characterised in that：The left side
Corresponding position on fixed block, right fixed block, two clip plates and two outer plates is respectively equipped with several screwed holes, two
Clip plate is locked on left fixed block and right fixed block through bolt respectively, for compressing sheet metal sample, and two external pressures
Plate is locked on left fixed block and right fixed block through bolt respectively, for compressing clip plate.
4. a kind of high duty metal sheet material shearing force experimental provision according to claim 3, it is characterised in that：On described
Template and lower template are arranged on a compressor, and the cope plate is fixed on the compression sliding block of the compressor, the lower mould
Block is fixed in the fixed seat of the compressor, and the cope plate moves up and down through compressor drives edge compression sliding block.
5. a kind of high duty metal sheet material shearing force experimental provision according to claim 3, it is characterised in that：In described
Briquetting bottom surface is provided with the lines for increasing friction force with sheet metal sample contacts face.
6. a kind of high duty metal sheet material shearing force experimental provision according to claim 1, it is characterised in that：It is described to lead
Cover for four, be respectively arranged at corner edge on cope plate.
7. a kind of high duty metal sheet material shearing force experimental provision according to claim 1, it is characterised in that：The left side
Be correspondingly provided with the inside of insert and right insert one be used for block set the groove of sheet metal sample.
8. a kind of high duty metal sheet material shearing force experimental provision according to claim 6, it is characterised in that：It is described recessed
Groove is tested contact surface and be provided with sheet metal is used for the lines of increasing friction force.
9. a kind of high duty metal sheet material shearing force experimental provision according to claim 1, it is characterised in that：The gold
The outer surface of category sheet coupon is coated with chequered with black and white decorative pattern.
10. a kind of method of testing of high duty metal sheet material shearing force experimental provision according to claim 4, its feature
It is, comprises the following steps：
Step S1：Cope plate is fixed on the compression sliding block of compressor, and lower module is fixed on to the fixed seat of compressor
On, and left fixed block, right fixed block, left insert and right insert are connected, assembled；
Step S2：Chequered with black and white decorative pattern is coated with the outer surface of sheet metal sample；
Step S3：By sheet metal test sample card be located between left insert and right insert, and with the groove of left insert and right insert
It is engaged；
Step S4：Two clip plates are locked on left fixed block and right fixed block by bolt respectively, for compressing metallic plate
Material sample, and two outer plates are locked on left fixed block and right fixed block by bolt respectively, for compressing clip plate；
Step S5：It is moved upwardly or downwardly by driven compressor cope plate along compression sliding block, sheet metal sample is carried out just
To shearing loading or flip Trim loading, while being continuously shot using high-resolution optical camera outside observation sheet metal sample
The decorative pattern change procedure on surface, obtains sheet metal shearing mechanical performance data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710329423.1A CN106969988B (en) | 2017-05-11 | 2017-05-11 | High-strength metal plate shearing mechanical experiment device and test method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710329423.1A CN106969988B (en) | 2017-05-11 | 2017-05-11 | High-strength metal plate shearing mechanical experiment device and test method thereof |
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| Publication Number | Publication Date |
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| CN106969988A true CN106969988A (en) | 2017-07-21 |
| CN106969988B CN106969988B (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710329423.1A Active CN106969988B (en) | 2017-05-11 | 2017-05-11 | High-strength metal plate shearing mechanical experiment device and test method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732040A (en) * | 2018-05-31 | 2018-11-02 | 北京万高众业科技股份有限公司 | A kind of sticky object shear strength test tooling and sticky object shear strength tester |
| CN112113858A (en) * | 2020-09-08 | 2020-12-22 | 中南大学 | Shear test device and method for high-strength metal plate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095647A (en) * | 2010-11-15 | 2011-06-15 | 西安交通大学 | Device for testing mechanical properties of thin sheet under simple shear loading |
| CN103592181A (en) * | 2013-11-29 | 2014-02-19 | 哈尔滨工业大学 | Fixture and method for measuring maximum tensile and shearing force of lap joint of friction stir welding |
| KR20140049200A (en) * | 2012-10-16 | 2014-04-25 | 현대중공업 주식회사 | Shear test support device of second members protecting wall and testing method therefore |
| CN106226155A (en) * | 2016-07-06 | 2016-12-14 | 上海交通大学 | A kind of composite thin plate inplane shear test fixture and test method |
| CN206862790U (en) * | 2017-05-11 | 2018-01-09 | 福州大学 | A kind of high duty metal sheet material shearing force experimental provision |
-
2017
- 2017-05-11 CN CN201710329423.1A patent/CN106969988B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095647A (en) * | 2010-11-15 | 2011-06-15 | 西安交通大学 | Device for testing mechanical properties of thin sheet under simple shear loading |
| KR20140049200A (en) * | 2012-10-16 | 2014-04-25 | 현대중공업 주식회사 | Shear test support device of second members protecting wall and testing method therefore |
| CN103592181A (en) * | 2013-11-29 | 2014-02-19 | 哈尔滨工业大学 | Fixture and method for measuring maximum tensile and shearing force of lap joint of friction stir welding |
| CN106226155A (en) * | 2016-07-06 | 2016-12-14 | 上海交通大学 | A kind of composite thin plate inplane shear test fixture and test method |
| CN206862790U (en) * | 2017-05-11 | 2018-01-09 | 福州大学 | A kind of high duty metal sheet material shearing force experimental provision |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732040A (en) * | 2018-05-31 | 2018-11-02 | 北京万高众业科技股份有限公司 | A kind of sticky object shear strength test tooling and sticky object shear strength tester |
| CN112113858A (en) * | 2020-09-08 | 2020-12-22 | 中南大学 | Shear test device and method for high-strength metal plate |
| CN112113858B (en) * | 2020-09-08 | 2022-06-03 | 中南大学 | Shear test device and method for high-strength metal plate |
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| Publication number | Publication date |
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| CN106969988B (en) | 2023-06-23 |
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