CN109612826A - A disc type round bar type specimen tensile and fatigue test fixture - Google Patents
A disc type round bar type specimen tensile and fatigue test fixture Download PDFInfo
- Publication number
- CN109612826A CN109612826A CN201910051018.7A CN201910051018A CN109612826A CN 109612826 A CN109612826 A CN 109612826A CN 201910051018 A CN201910051018 A CN 201910051018A CN 109612826 A CN109612826 A CN 109612826A
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- China
- Prior art keywords
- fixture
- type sample
- cavity
- groove
- stretches
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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
- G01N3/02—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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0423—Chucks, fixtures, jaws, holders or anvils using screws
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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 disc type pole type samples to stretch and fatigue experiment fixture, this device contains upper fixture 1, and the lower fixture 2 being connected by detachable structure with upper fixture, the cavity 3 for fixing pole type sample is equipped between upper and lower fixture simultaneously, sample is axially inserted into cavity, and is pierced by cavity by preformed hole in the middle part of upper and lower fixture.It is equipped with horizontal ruler 7 in upper fixture, for guaranteeing to keep upper fixture after fixed sample always in the horizontal direction.The present invention is by using cavity, the preformed hole that is opened on cavity and the horizontal ruler in upper fixture between upper fixture, lower fixture, fixture, its stretching experiment that can be used not only for pole type sample, the compression experiment and fatigue experiment that can be also used for pole type sample, considerably increase the scope of application of experimental facilities.
Description
Technical field
The present invention relates to experimental apparatus field, it is related specifically to a kind of disc type pole type sample and stretches and fatigue experiment folder
Tool.
Background technique
The tension test of material refers to the test method that material property is measured in the case where bearing axial tensile loads.Utilize stretching
Test can calculate other tensile properties such as elastic limit, elongation, elasticity modulus, tensile strength, yield strength of material and refer to
Mark；Fatigue experiment refers to the test method that material property is measured in the case where bearing alternating load.Material can be calculated using fatigue experiment
Fatigue strength (fatigue limit), the drafting material S-N(S-L of material) curve etc..It is real in the stretching and fatigue for carrying out material
When testing, screw thread clamping is generallyd use for pole profile material or in the mode of sample end punching, is existed using screw thread clamping mode
Experiment can not usually unload sample after carrying out from fixture well, easily cause the destruction of sample.The mode of end punching easily makes
Sample destroys.The collet of existing experimental facilities can not well clamp pole type sample.
Existing pole type specimen holder has the following problems in stretching and fatigue experiment operation:
1) stretching and the fatigue experiment that pole type sample is carried out using screw thread clamping mode, easily make sample stick together with fixture,
It is not easy to unload sample, and easily destroys fixture；
2) it be easy to cause stress in experimentation to concentrate by the way of the punching of end, the related ginseng of material can not be measured well
Number；
3) material is easy to appear loose phenomenon during carrying out fatigue experiment；
4) in the clamping process of sample, upper and lower fixture is not easy to keep on the same line, to be easy to cause error；
5) upper fixture is easy unhorizontal in clamping process, is easy to generate axial dipole field during the experiment.
Summary of the invention
It is an object of the present invention to be directed to the technical deficiency in current pole type specimen holder, a kind of disc type is proposed
Pole type sample stretch and fatigue experiment fixture, to solve the problems, such as presently, there are.
The technical issues of present invention is able to solve can be achieved through the following technical solutions:
A kind of disc type pole style stretches and fatigue test clamper, including upper fixture and passes through detachable structure and institute
The lower fixture that upper fixture is connected is stated, while being equipped with cavity in the upper and lower fixture, for fixing pole pattern sample, and
And the cavity contains the round preformed hole communicated with outside.
Further, the groove that the upper fixture is equipped with and pole type sample end matches, for preferably to sample
It is fixed.The upper fixture collectively forms the cavity for fixing pole pattern sample with the lower fixture with circular groove, and
It is pierced by the preformed hole that upper fixture is equipped with through its groove for sample.
Further, it is equipped with horizontal ruler in the upper fixture side and upper surface, to guarantee fixture in debugging process
Always in horizontal plane, the component that other directions outside axial force are produced during stretching and fatigue test is prevented.
Further, the upper fixture groove shapes are consistent with pole type sample end shape, and lower fixture groove is circle,
And fixture groove and reserved pore size strategy are greater than pole type sample corresponding position size up and down.
Further, each seamed edge of the Multi-functional circular rod type sample is equipped with rounded corner.
Further, the detachable structure is connected by screw bolts, and upper and lower fixture is equipped with bolt hole, and bolt uses
Interior hexagonal dormant bolt.
It compares with the prior art, advantage of the present invention is as follows:
1. the cavity for fixing pole type sample is formed by the way that the groove of fixture and form of grooves up and down is arranged, it not only can be with
Stretching experiment is carried out, compression and fatigue test can be also carried out；
2. reducing influence of the bolt to lab space by using interior hexagonal dormant bolt, and this detachable structure facilitates sample
Assembly And Disassembly；
3. fixing pole sample by the cavity before upper and lower fixture, sample is easy during being able to solve fatigue test
Now loosen this problem；
4. all seamed edges of fixture are equipped with rounded corner about, improve the safety of experimental provision；
5. can guarantee it during the adjustment always in horizontal plane by the way that horizontal ruler is arranged in upper fixture side and upper end
It is interior, it prevents from generating the component except other outside directions of axis during the experiment.
Detailed description of the invention
Fig. 1 is the positional diagram of laboratory holder of the present invention and pole type sample.
Fig. 2 is the cross-sectional view of laboratory holder of the present invention and pole type sample.
Figure label explanation: upper fixture 1, lower fixture 2, upper fixture groove 3, lower fixture groove 4, nut 5, interior hexagonal countersunk head
Bolt 6, horizontal ruler 7.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
Referring to Fig. 1 and Fig. 2, a kind of disc type pole type sample of the present invention stretches and fatigue test clamper includes upper
Fixture and lower fixture, upper fixture includes fixture block, the reserved round hole, groove and the bolt hole that are disposed thereon, and is held on it
It is equipped with horizontal ruler with side section, lower fixture is T-type structure, including fixing end and clamping end, and fixing end is equipped with circular groove and bolt
Hole.
Upper fixture is connected with lower fixture by detachable structure, and in this configuration, the detachable structure used is bolt company
Binding structure, the bolt fastening structure include offering bolt hole on upper and lower fixture respectively and for connecting the bolt
The interior hexagonal dormant bolt in hole.
Groove 1 is located at the bottom of upper fixture, and groove 2 is located at the top surface of lower fixture, and two grooves collectively form a cavity,
Round preformed hole is equipped in 1 middle position of groove simultaneously.
The depth of two constituted cavitys of groove, should be less than the end thickness of pole type sample, pass through interior hexagonal countersunk head spiral shell
The obstinate fixture up and down of bolt firmly clamps, and the clamping end of the other end of pole pattern sample and lower fixture is finally connected in testing machine respectively
Collet up and down, then operation stretch and fatigue tester, axial tension or alternating load can be applied, to it to complete to stretch
And fatigue test.
In addition, it is contemplated that experiment safety factor, all seamed edges of this fixture are equipped with rounded corner.
In experiment, the groove size in upper and lower fixture is slightly larger than the corresponding position size of pole type sample, diameter
Size is greater than the gap of 0.5 ~ 1mm of specimen size.At alignment jig position, due to lower fixture be it is fixed, then by adjusting
Upper fixture, and according to upper fixture accelerate on the horizontal ruler that is arranged, be located at it in horizontal plane in experiment, when guaranteeing that experiment carries out
The component in other outside directions of axis will not be produced.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (6)
1. a kind of disc type pole type sample stretches and fatigue experiment fixture, it is characterised in that: including upper fixture, Yi Jitong
The lower fixture that detachable structure is connected with upper fixture is crossed, the chamber for fixing pole type sample is equipped between upper and lower fixture
Body, sample are axially inserted into cavity, and are pierced by cavity by preformed hole in the middle part of upper and lower fixture, while being equipped with level in upper fixture
Ruler.
2. Multi-functional circular rod type sample according to claim 1 stretches and fatigue experiment fixture, it is characterised in that: for connecting
The attachment device for connecting lower fixture is bolt fastening structure, and the bolt fastening structure includes the spiral shell being reserved on upper and lower fixture
Keyhole and dormant bolt for connecting the bolt hole.
3. Multi-functional circular rod type sample according to claim 1 stretches and fatigue experiment fixture, it is characterised in that: the chamber
Body includes the groove 1 for being opened in the upper fixture bottom surface, and form of grooves is consistent with sample top form in order to preferably pasting
Closing and be opened in the circular groove 2 of the lower fixture top surface, the groove 1 and circular groove 2 constitute the cavity, and
The circular through hole through upper fixture is offered on first groove.
4. Multi-functional circular rod type sample according to claim 1 stretches and fatigue experiment fixture, it is characterised in that:
The fixture include fixture block and therebetween position setting round preformed hole, the first groove and for connect up and down fixture
Bolt hole.
5. Multi-functional circular rod type sample according to claim 1 stretches and fatigue experiment fixture, it is characterised in that: described
The upper surface and side of upper fixture are equipped with horizontal ruler, for making it in horizontal direction parallel in adjusting upper fixture.
6. Multi-functional circular rod type sample according to claim 1 stretches and fatigue experiment fixture, it is characterised in that: the circle
The width and length of shape through hole section are greater than the width and length that pole type sample founds portion, the width and length of the cavity cross-section
Greater than the width and length of pole type sample transverse part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910051018.7A CN109612826A (en) | 2019-01-21 | 2019-01-21 | A disc type round bar type specimen tensile and fatigue test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910051018.7A CN109612826A (en) | 2019-01-21 | 2019-01-21 | A disc type round bar type specimen tensile and fatigue test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109612826A true CN109612826A (en) | 2019-04-12 |
Family
ID=66017681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910051018.7A Pending CN109612826A (en) | 2019-01-21 | 2019-01-21 | A disc type round bar type specimen tensile and fatigue test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109612826A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5056372A (en) * | 1990-11-28 | 1991-10-15 | Gte Laboratories Incorporated | Copper collet grip mechanism |
| CN102435498A (en) * | 2011-12-02 | 2012-05-02 | 中国石油天然气第七建设公司 | Pull-off force test method |
| CN202393650U (en) * | 2011-09-30 | 2012-08-22 | 长城汽车股份有限公司 | Tensile strength test clamp |
| CN203606214U (en) * | 2013-12-11 | 2014-05-21 | 上海电力建设修造厂 | Clamping device for welded stud tensile test |
| CN106053217A (en) * | 2016-05-12 | 2016-10-26 | 上海工程技术大学 | Multifunctional T type sample stretching and fatigue experiment clamp |
| CN106442120A (en) * | 2016-12-02 | 2017-02-22 | 西南交通大学 | Fatigue test clamp device for T-shaped corner joint |
| CN206258314U (en) * | 2016-12-06 | 2017-06-16 | 深圳市万泽中南研究院有限公司 | A kind of creep test fixture |
-
2019
- 2019-01-21 CN CN201910051018.7A patent/CN109612826A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5056372A (en) * | 1990-11-28 | 1991-10-15 | Gte Laboratories Incorporated | Copper collet grip mechanism |
| CN202393650U (en) * | 2011-09-30 | 2012-08-22 | 长城汽车股份有限公司 | Tensile strength test clamp |
| CN102435498A (en) * | 2011-12-02 | 2012-05-02 | 中国石油天然气第七建设公司 | Pull-off force test method |
| CN203606214U (en) * | 2013-12-11 | 2014-05-21 | 上海电力建设修造厂 | Clamping device for welded stud tensile test |
| CN106053217A (en) * | 2016-05-12 | 2016-10-26 | 上海工程技术大学 | Multifunctional T type sample stretching and fatigue experiment clamp |
| CN106442120A (en) * | 2016-12-02 | 2017-02-22 | 西南交通大学 | Fatigue test clamp device for T-shaped corner joint |
| CN206258314U (en) * | 2016-12-06 | 2017-06-16 | 深圳市万泽中南研究院有限公司 | A kind of creep test fixture |
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Application publication date: 20190412 |