CN106289982A - A kind of stretching mechanical property testing device - Google Patents
A kind of stretching mechanical property testing device Download PDFInfo
- Publication number
- CN106289982A CN106289982A CN201610970776.5A CN201610970776A CN106289982A CN 106289982 A CN106289982 A CN 106289982A CN 201610970776 A CN201610970776 A CN 201610970776A CN 106289982 A CN106289982 A CN 106289982A
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- China
- Prior art keywords
- chuck
- bar
- mechanical property
- testing device
- groove
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Classifications
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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
- G01N3/08—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
- 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
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0405—Features allowing alignment between specimen and chucks
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- 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)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of stretching mechanical property testing device, including the upper grip assembly being connected with upper connecting rod axial restraint and the lower chuck assembly being connected with lower link axial restraint；Described upper grip assembly, is perpendicular to, including upper grip bar with described upper grip bar edge, the upper tensioning chuck that draw direction is slidably matched；Described lower chuck assembly, is perpendicular to, including lower chuck bar with described lower chuck bar edge, the lower tensioning chuck that draw direction is slidably matched；Described upper tensioning chuck and described lower tensioning chuck are used for fixing sample.During test, by the stretching to sample, tensioning chuck and lower tensioning chuck edge is made to be perpendicular to draw direction and all produce the effect of power and slide, and then automatically adjust the draw direction of sample, make draw direction identical with upper grip bar and lower chuck bar direction, and then make sample preferably be in two power bar states.
Description
Technical field
The present invention relates to material properties test technical field, particularly relate to a kind of stretching mechanical property testing device.
Background technology
The mechanical property of material refers to that material, under varying environment (temperature, medium, humidity), bears various plus load
The mechanical characteristics shown time (stretch, compress, bend, reverse, impact, alternate stress etc.).Draw as it is shown in figure 1, existing
Stretch Mechanics Performance Testing, mostly use upper grip 1 to be connected with upper connecting rod 3 by upper pin 2, lower chuck 4 by lower pin 5 and under
The mode that connecting rod 6 connects, but in order to the extension test making sample is more accurate, it is required that sample is preferably in two power bars
State (i.e. the axle center of upper grip 1 is all identical with the draw direction of sample 7 with the axle center of lower chuck 4) is therefore right in test process
Axiality in upper grip and lower chuck requires higher, and existing test device is in actual production, upper grip and lower chuck
Relatively difficult to achieve absolute coaxial, and the diversity of the axiality of the upper grip of different test device and lower chuck is relatively big, the most not
With test device when testing sample of the same race, test result diversity is the biggest.
In sum, the problem that sample is preferably in two power bar states how is made, it has also become those skilled in the art are urgently
Technical barrier to be solved.
Summary of the invention
It is an object of the invention to provide a kind of stretching mechanical property testing device so that sample to be preferably in two power shaft-like
State.
To achieve these goals, the invention provides a kind of stretching mechanical property testing device, including with upper pitman shaft
To the upper grip assembly of fixing connection and the lower chuck assembly that is connected with lower link axial restraint；
Described upper grip assembly, is perpendicular to what draw direction was slidably matched including upper grip bar with described upper grip bar edge
Upper tensioning chuck；
Described lower chuck assembly, is perpendicular to what draw direction was slidably matched including lower chuck bar with described lower chuck bar edge
Lower tensioning chuck；
Described upper tensioning chuck and described lower tensioning chuck are used for fixing sample.
Preferably, described upper grip bar being provided with the first groove, one end of described upper tensioning chuck can embed described
One groove, and can slide along described first groove；The second groove it is provided with on described lower chuck bar, described lower tensioning chuck
One end can embed described second groove, and can slide along described second groove.
Preferably, described first groove and described second groove are dovetail groove.
Preferably, described upper tensioning chuck and described lower tensioning chuck are provided with that can to embed the taper of described dovetail groove convex
Card.
Preferably, described upper grip assembly can be around the axis rotation of described upper connecting rod and/or described lower chuck assembly energy
Enough axis around described lower link rotate.
Preferably, described upper tensioning chuck is slidably matched with described upper grip bar direction and described lower tensioning chuck and institute
The direction being slidably matched stating lower chuck bar intersects vertically.
Preferably, the environment control unit of this device includes casing with the heating of the inside being arranged on described casing with heat insulation
Device, described upper grip assembly and described lower chuck assembly are arranged on the inside of described heating and heat ray filter.
Preferably, described casing is horizontal cylinder shape casing.
Preferably, described casing is provided with multiple door.
Preferably, it is provided with device for moving and adjusting below described environment control unit.
Compare and introduce content with background technology, above-mentioned stretching mechanical property testing device, by respectively by upper grip bar with
Upper tensioning chuck edge is perpendicular to draw direction and is slidably matched；Lower chuck bar and lower tensioning chuck are joined along being perpendicular to draw direction slip
Close.During test, by the stretching to sample so that upper tensioning chuck and lower tensioning chuck edge are perpendicular to draw direction and all produce power
Effect and slide, and then automatically adjust the draw direction of sample so that draw direction and upper grip bar and lower chuck bar
Direction is identical, and then makes sample preferably be in two power bar states.
Accompanying drawing explanation
Fig. 1 is the structural representation of tradition stretching mechanical property testing device；
Structural representation (the not shown environment control of the stretching mechanical property testing device that Fig. 2 provides for the embodiment of the present invention
Device processed)；
The structural representation of the stretching mechanical property testing device that Fig. 3 provides for the embodiment of the present invention (survey by not shown deformation
Amount extensometer).
In figure 1 above-3,
Upper grip 1, upper pin 2, upper connecting rod 3, lower chuck 4, lower pin 5, lower link 6, sample 7, deformation measurement extensometer
8, extend bar 9, upper grip bar 10, upper tensioning chuck 11, lower chuck bar 12, lower tensioning chuck 13, casing 14, heating with heat insulation dress
Put 15, device for moving and adjusting 16.
Detailed description of the invention
The core of the present invention is to provide a kind of stretching mechanical property testing device, makes sample preferably be in two power shaft-like
State.
In order to make those skilled in the art be more fully understood that the technical scheme that the present invention provides, below in conjunction with accompanying drawing and
The present invention is described in further detail for specific embodiment.
As shown in Figures 2 and 3, the embodiment of the present invention provide a kind of stretching mechanical property testing device, including with upper company
Upper grip assembly that bar 3 axial restraint connects and the lower chuck assembly that is connected with lower link 6 axial restraint；Upper grip assembly, bag
Include upper grip bar 10 and with upper grip bar along being perpendicular to the upper tensioning chuck 11 that draw direction is slidably matched；Lower chuck assembly, bag
Include lower chuck bar 12 and with lower chuck bar along being perpendicular to the lower tensioning chuck 13 that draw direction is slidably matched；Upper tensioning chuck 11 He
Lower tensioning chuck 13 is used for fixing sample.
Compare and introduce content with background technology, above-mentioned stretching mechanical property testing device, by respectively by upper grip bar with
Upper tensioning chuck edge is perpendicular to draw direction and is slidably matched；Lower chuck bar and lower tensioning chuck are joined along being perpendicular to draw direction slip
Close.During test, by the stretching to sample so that upper tensioning chuck and lower tensioning chuck edge are perpendicular to draw direction and all produce power
Effect and slide, and then automatically adjust the draw direction of sample so that draw direction and upper grip bar and lower chuck bar
Direction is identical, and then makes sample preferably be in two power bar states.
Further, above-mentioned upper grip bar 10 being provided with the first groove, one end of upper tensioning chuck 11 can embed first
Groove, and can slide along the first groove；Being provided with the second groove on lower chuck bar 12, one end of lower tensioning chuck 13 can embed
Second groove, and can slide along the second groove.Of course, it should be understood that arrange recessed on above-mentioned upper grip bar and lower chuck bar
The mode of the groove only embodiment of the present invention is for the above-mentioned a kind of citing being slidably matched, it is also possible to be upper tensioning chuck 11
One end be provided with the first groove, upper grip bar can embed the first groove, and one end of lower tensioning chuck 13 is provided with the second groove,
Lower chuck bar can embed the form of the second groove；Or other modes being slidably matched that those skilled in the art commonly use.
Further, above-mentioned first groove and the second groove are dovetail groove.It is appreciated of course that above-mentioned dovetail groove
Only the one of the embodiment of the present invention is preferably illustrated, it is also possible to be the groove of other forms, such as semi-circular recesses or circle
Shape groove etc., and the simpler convenience of processing of dovetail groove opposed semicircular groove and circular trough.
Further, above-mentioned upper tensioning chuck 11 and lower tensioning chuck 13 are provided with that can to embed the taper of dovetail groove convex
Card.It is appreciated of course that it is excellent with the one that dovetail groove is slidably matched in the above-mentioned taper convex clip only embodiment of the present invention
Selection of land is illustrated, it is also possible to be arc convex, semi-cylindrical hill or soccer star's projection etc..
Further, described upper grip assembly can be around the axis rotation of described upper connecting rod 3 and/or described lower chuck assembly
Can rotate around the axis of described lower link 6.Can be specifically that above-mentioned upper grip assembly can be around the axis rotation of upper connecting rod 3；
Can also be that lower chuck assembly can rotate around the axis of lower link 6；Can also is that the combination of above two mode, i.e. upper grip
Assembly can around the axis rotation of upper connecting rod 3, and lower chuck assembly can around lower link 6 axis rotate.Above-mentioned by arranging
The form rotated so that the draw direction of convenient adjustment sample and upper grip bar and the axis parallel of lower chuck bar, the most more
It is easy to sample and is preferably in two power bar states.
Further, upper tensioning chuck 11 is slidably matched with upper grip bar 10 direction and lower tensioning chuck 13 and lower chuck
The direction being slidably matched of bar 12 intersects vertically.Of course, it should be understood that the above-mentioned direction being slidably matched may also be non-perpendicular
The arrangement intersected, only the embodiment of the present invention preferably employs the above-mentioned arrangement intersected vertically.Because sliding
The direction coordinated intersects vertically so that upper tensioning chuck and lower tensioning chuck be time in drawing process, under tension is automatically adjusted,
The circumference deviation at any angle along upper stretch or lower stretch can be realized all can automatically adjust.
Further, the environment control unit of this device include casing 14 and be arranged on casing 14 inside heating with every
Thermal 15, upper grip assembly and lower chuck assembly are arranged on the inside of heating and heat ray filter 15.By arrange heating with every
Thermal makes, and reduces the space of heating, easily facilitates intensification and temperature controls.
Further, above-mentioned casing 14 is horizontal cylinder shape casing.Will be understood is above-mentioned horizontal cylinder formula casing
Only the one of the embodiment of the present invention is preferably illustrated, it is also possible to be the casing of other shapes.
Further, above-mentioned casing 14 is provided with multiple door.By arranging multiple door so that can in test installation process
To realize, many individuals are common to be assembled.
Further, it is provided with device for moving and adjusting 16 below above-mentioned environment control unit.Can by device for moving and adjusting
So that the transfer of whole setting position is convenient.It is appreciated of course that above-mentioned device for moving and adjusting can pass through roller
Mode, it is also possible to by the way of slide rail, or other modes that those skilled in the art commonly use.
Above stretching mechanical property testing device provided by the present invention is described in detail.It should be noted that
Each embodiment in this specification all uses the mode gone forward one by one to describe, and what each embodiment stressed is to implement with other
The difference of example, between each embodiment, identical similar part sees mutually.
Also, it should be noted in this article, the relational terms of such as first and second or the like is used merely to one
Entity or operation separate with another entity or operating space, and not necessarily require or imply between these entities or operation
There is relation or the order of any this reality.And, term " includes ", " comprising " or its any other variant are intended to contain
Comprising of lid nonexcludability, so that include that the article of a series of key element or equipment not only include those key elements, but also
Including other key elements being not expressly set out, or also include the key element intrinsic for this article or equipment.Do not having
In the case of more restrictions, statement " including ... " key element limited, it is not excluded that at the article including above-mentioned key element
Or equipment there is also other identical element.
Principle and the embodiment of the present invention are set forth by specific case used herein, saying of above example
Bright method and the core concept thereof being only intended to help to understand the present invention.It should be pointed out that, the ordinary skill for the art
For personnel, under the premise without departing from the principles of the invention, it is also possible to the present invention is carried out some improvement and modification, these improve
Also fall in the protection domain of the claims in the present invention with modifying.
Claims (10)
1. a stretching mechanical property testing device, it is characterised in that include the upper grip being connected with upper connecting rod (3) axial restraint
Assembly and the lower chuck assembly being connected with lower link (6) axial restraint；
Described upper grip assembly, is perpendicular to what draw direction was slidably matched including upper grip bar (10) with described upper grip bar edge
Upper tensioning chuck (11)；
Described lower chuck assembly, is perpendicular to what draw direction was slidably matched including lower chuck bar (12) with described lower chuck bar edge
Lower tensioning chuck (13)；
Described upper tensioning chuck (11) and described lower tensioning chuck (13) are used for fixing sample.
2. stretching mechanical property testing device as claimed in claim 1, it is characterised in that described upper grip bar (10) is upper to be arranged
There are the first groove, one end of described upper tensioning chuck (11) can embed described first groove, and can be sliding along described first groove
Dynamic；Being provided with the second groove on described lower chuck bar (12), one end of described lower tensioning chuck (13) can embed described second recessed
Groove, and can slide along described second groove.
3. stretching mechanical property testing device as claimed in claim 2, it is characterised in that described first groove and described second
Groove is dovetail groove.
4. stretching mechanical property testing device as claimed in claim 3, it is characterised in that described upper tensioning chuck (11) and institute
State lower tensioning chuck (13) and be provided with the taper convex clip that can embed described dovetail groove.
5. stretching mechanical property testing device as claimed in claim 1, it is characterised in that described upper grip assembly can be around institute
Axis rotation and/or the described lower chuck assembly of stating connecting rod (3) can rotate around the axis of described lower link (6).
6. stretching mechanical property testing device as claimed in claim 1, it is characterised in that described upper tensioning chuck (11) and institute
State being slidably matched of direction that upper grip bar (10) is slidably matched and described lower tensioning chuck (13) and described lower chuck bar (12)
Direction intersect vertically.
7. stretching mechanical property testing device as claimed in claim 1, it is characterised in that the environment control unit bag of this device
Include casing (14) and be arranged on heating and the heat ray filter (15) of inside of described casing (14), described upper grip assembly and described
Lower chuck assembly is arranged on the inside of described heating and heat ray filter (15).
8. stretching mechanical property testing device as claimed in claim 7, it is characterised in that described casing (14) is horizontal cylinder
Shape casing.
9. stretching mechanical property testing device as claimed in claim 7, it is characterised in that be provided with many on described casing (14)
Individual door.
10. stretching mechanical property testing device as claimed in claim 7, it is characterised in that below described environment control unit
It is provided with device for moving and adjusting (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610970776.5A CN106289982B (en) | 2016-10-27 | 2016-10-27 | A kind of stretching mechanical property testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610970776.5A CN106289982B (en) | 2016-10-27 | 2016-10-27 | A kind of stretching mechanical property testing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106289982A true CN106289982A (en) | 2017-01-04 |
| CN106289982B CN106289982B (en) | 2019-02-15 |
Family
ID=57721213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610970776.5A Active CN106289982B (en) | 2016-10-27 | 2016-10-27 | A kind of stretching mechanical property testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106289982B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548713A (en) * | 2018-03-29 | 2018-09-18 | 合肥工业大学 | A kind of amendable mobile test device and its test method |
| CN108918292A (en) * | 2018-07-03 | 2018-11-30 | 上海曙赢新材料有限公司 | Tensile test device is used in a kind of exploitation of new material |
| CN110726613A (en) * | 2019-10-21 | 2020-01-24 | 吉林大学 | Tensile extensometer suitable for major diameter thin wall pipe |
| CN111238957A (en) * | 2020-04-08 | 2020-06-05 | 黄河科技学院 | Al-based binary intermetallic compound thermodynamic property experimental device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4080824A (en) * | 1976-10-13 | 1978-03-28 | Starks Emmett A | Test specimen grip assembly |
| DE10242706A1 (en) * | 2002-09-13 | 2004-03-18 | Sobatec Gmbh | Test bar or test sample clamping arrangement for clamping bars that are used in material testing, whereby the ends of the bar are held in matching relief shapes for the bar ends that are formed from two interlocking halves |
| DE69628898T2 (en) * | 1995-12-12 | 2004-05-06 | Société Nationale d'Etude et de Construction de Moteurs d'Aviation | Device for off-axis testing of anisotropic materials |
| CN201707256U (en) * | 2010-05-31 | 2011-01-12 | 武汉钢铁(集团)公司 | Sample vertical centering clamp for tensile testing machine |
| CN103048190A (en) * | 2012-12-14 | 2013-04-17 | 天津钢铁集团有限公司 | Tensile test fixture for tensile testing machine |
| CN204613021U (en) * | 2015-05-13 | 2015-09-02 | 中国飞机强度研究所 | A kind of centering assembly for testing machine |
-
2016
- 2016-10-27 CN CN201610970776.5A patent/CN106289982B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4080824A (en) * | 1976-10-13 | 1978-03-28 | Starks Emmett A | Test specimen grip assembly |
| DE69628898T2 (en) * | 1995-12-12 | 2004-05-06 | Société Nationale d'Etude et de Construction de Moteurs d'Aviation | Device for off-axis testing of anisotropic materials |
| DE10242706A1 (en) * | 2002-09-13 | 2004-03-18 | Sobatec Gmbh | Test bar or test sample clamping arrangement for clamping bars that are used in material testing, whereby the ends of the bar are held in matching relief shapes for the bar ends that are formed from two interlocking halves |
| CN201707256U (en) * | 2010-05-31 | 2011-01-12 | 武汉钢铁(集团)公司 | Sample vertical centering clamp for tensile testing machine |
| CN103048190A (en) * | 2012-12-14 | 2013-04-17 | 天津钢铁集团有限公司 | Tensile test fixture for tensile testing machine |
| CN204613021U (en) * | 2015-05-13 | 2015-09-02 | 中国飞机强度研究所 | A kind of centering assembly for testing machine |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548713A (en) * | 2018-03-29 | 2018-09-18 | 合肥工业大学 | A kind of amendable mobile test device and its test method |
| CN108548713B (en) * | 2018-03-29 | 2022-10-04 | 合肥工业大学 | Correctable mobile test device and test method thereof |
| CN108918292A (en) * | 2018-07-03 | 2018-11-30 | 上海曙赢新材料有限公司 | Tensile test device is used in a kind of exploitation of new material |
| CN110726613A (en) * | 2019-10-21 | 2020-01-24 | 吉林大学 | Tensile extensometer suitable for major diameter thin wall pipe |
| CN110726613B (en) * | 2019-10-21 | 2024-06-07 | 吉林大学 | Stretching extensometer suitable for large-diameter thin-wall round tube |
| CN111238957A (en) * | 2020-04-08 | 2020-06-05 | 黄河科技学院 | Al-based binary intermetallic compound thermodynamic property experimental device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106289982B (en) | 2019-02-15 |
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Address after: 130000 Silicon Valley Street 1118, Changchun High-tech Zone, Jilin Province Applicant after: The machine test equipment Limited by Share Ltd Address before: 130000 Silicon Valley Street 1118, Changchun City, Jilin Province Applicant before: Changchun Research Institute for Mechanical Science Co., Ltd. |
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