CN206248465U - A kind of plate tensile sample stretching clamp - Google Patents
A kind of plate tensile sample stretching clamp Download PDFInfo
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- CN206248465U CN206248465U CN201621291132.5U CN201621291132U CN206248465U CN 206248465 U CN206248465 U CN 206248465U CN 201621291132 U CN201621291132 U CN 201621291132U CN 206248465 U CN206248465 U CN 206248465U
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Abstract
The utility model discloses a kind of plate tensile sample stretching clamp, it is characterised in that the fixture includes：Clamp body (3,5), its one end is provided with pin hole (7), and by pin (2) and tensile testing machine connecting rod (1,6) connect, axis for ensureing test pulling force, fixture and test block overlaps, the clamp body (3,5) the other end is provided with a longitudinal fluting through fixture, the bottom of the groove is sample cell (8), the width of sample cell (8) is more slightly larger than the thickness of test specimen (4), for ensureing that sample (4) carries out tension test in can putting the clamp body (3,5) into.Scheme of the present utility model is provided with a longitudinal fluting through fixture by the end of clamp body, can carry out tension test to various high intensity, high rigidity and unmanageable sample.
Description
Technical field
The utility model belongs to field of fixtures, more particularly, to a kind of plate tensile sample stretching clamp.
Background technology
High temperature alloy is the critical material that Aero-Space numbers of hot-side engine position uses, in advanced aero-engine,
High temperature alloy consumption accounts for engine total amount more than 60%.The mechanical property of such alloy material, including normal temperature/drawing by high temperature
Energy, fatigue behaviour etc. are the important indexs for weighing the material under high temperature operating conditions.
At present, metal material test performance, when high temperature test is carried out, is tied frequently with cupping machine using threaded connection
Structure, is threadedly coupled using sample is test for the pull bar of cupping machine.Although this kind of sample in process of the test with
The connection of testing machine pull bar is fastened very much, but still there are many weak points.
Patent document CN102928288A discloses a kind of tensile test fixture, including bottom plate, auxiliary splint and cushion block, main
Clamping plate bottom is provided with panel bolts hole, and bottom plate, auxiliary splint, cushion block are connected by fixing bolt；Auxiliary splint can be in fixation
Slided on bolt；Bottom plate is provided with the first caging bolt；Cushion block is provided with the second caging bolt.The fixture is applied to surface light
Sliding and vertical clamp surface should not apply larger self-lock force, the tensile test fixture of test specimen in irregular shape, solve shape not
Matching, the problem for destroying test piece end by self-lock force raising friction is increased.But patent document CN102928288A is public
There are the following problems for the tensile test fixture opened：
(1) in terms of sample processing, because using being threadedly coupled, the requirement on machining accuracy for sample is higher, tested
Have a try sample intensity it is higher when, such as nickel base superalloy, with intensity and hardness higher, it is necessary to high-quality when being machined out
Cutter can just be processed, undoubtedly increased sample processing cost.The difficult-to-machine material of other hardness (HRC ＞ 50) high, example
Such as high-strength mould steel and cermet, are difficult to using machine-tooled method.At the same time, for using helicitic texture
Fixture, it is impossible to which the sample to small size is tested.
(2) when the screw thread of configuration aspects, screw thread sample and fixture is for a long time, hot conditions work, it is susceptible to oxidation
And sintering phenomenon, a series of problems, such as cause sample and fixture to thread off.If when fixture screw thread timeliness or not good connection, needing
Fixture and tested sample are reinstalled, is lost time and manpower and materials.
Utility model content
For the disadvantages described above or Improvement requirement of prior art, the utility model provide a kind of plate tensile sample stretching clamp and
Its application method, its object is to be provided with a longitudinal fluting through fixture by the end of clamp body, can be to various
High intensity, high rigidity and unmanageable sample carry out tension test, effectively overcome and be threadedly coupled in the prior art to sample
Requirement on machining accuracy problem high.
To achieve these goals, the utility model provides a kind of plate tensile sample stretching clamp, it is characterised in that the fixture
Including：Clamp body, its one end is provided with pin hole, and is connected with tensile testing machine connecting rod by pin, for ensureing that test is drawn
The axis of power, fixture and test block overlaps, and the other end of the clamp body is provided with a longitudinal fluting through fixture, institute
The bottom of groove is stated for sample cell, the width of sample cell is more slightly larger than the thickness of test specimen, for ensureing that sample can put the folder into
Tension test is carried out in specific.
Further, the bottom of the groove is circular arc, the radius of curvature of the circular arc and the circular arc curvature of sample half
Footpath is consistent, for ensureing that the sample is brought into close contact in drawing process with the clamp body.
Further, the groove is being parallel portion near clamp body end sections, and the parallel portion is put down with sample
The width of row section is consistent, and for ensureing in sample loading process, fixture, sample, pulling force are in parastate.
Further, the groove carries out chamfered, to avoid stress concentration.
Further, the material of the clamp body is high intensity nickel-base high-temperature alloy material.
In general, by the contemplated above technical scheme of the utility model compared with prior art, can obtain down
Row beneficial effect：
(1) stretching clamp of the present utility model, a longitudinal fluting through fixture is provided with by the end of clamp body,
Tension test can be carried out to various high intensity, high rigidity and unmanageable sample, effectively overcome screw thread in the prior art and connect
Connect the problem high to the requirement on machining accuracy of sample.
(2) stretching clamp of the present utility model, clamp body one end is provided with pin hole, and is connected by pin and tensile testing machine
Extension bar is connected, and the axis for ensureing test pulling force, fixture and test block overlaps, and loads convenient, it is ensured that concentricity, fixture
With sample stable connection.
(3) stretching clamp of the present utility model, the material of the clamp body is high intensity nickel-base high-temperature alloy material, can be with
Experimental temperature scope is realized from room temperature to 1000 DEG C, test temperature scope is expanded, and efficiently solve spiral shell in the prior art
Line is connected, the problem for being susceptible to aoxidize and sinter under the high temperature conditions.
(4) stretching clamp of the present utility model, relatively low to sample requirement, sample is easy to process, can be using the line of low cost
Cutting mode is processed to sample, can sample in any direction, can test small size sample, reduces experimentation cost, saves
Resource.
Brief description of the drawings
The experimental rig overall schematic that Fig. 1 is related to for a kind of plate tensile sample stretching clamp of the utility model embodiment
Figure；
Fig. 2 is a kind of plate tensile sample stretching clamp schematic diagram of the utility model embodiment.
In Fig. 1 and Fig. 2,1- tensile testing machine upper connecting rods, 2- pins, 3- upper fixture bodies, 4- test samples, 5- lower clamps
Body, 6- tensile testing machine lower connecting rods, 7- pin holes, 8- sample cells.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and implementation
Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only used to explain this
Utility model, is not used to limit the utility model.Additionally, involved in the utility model disclosed below each implementation method
As long as and to technical characteristic do not constitute each other conflict can just be mutually combined.
The experimental rig overall schematic that Fig. 1 is related to for a kind of plate tensile sample stretching clamp of the utility model embodiment
Figure；Fig. 2 is a kind of plate tensile sample stretching clamp schematic diagram of the utility model embodiment.As depicted in figs. 1 and 2, a kind of tabular
Sample drawing clamp, top is connected in measurer for pulling force upper connecting rod 1 by pin 2, is connected on fixture top and measurer for pulling force
Coordinated by gap between bar 1 and pin hole 7 and pin 2 and be attached, it is ensured that test specimens 4 are protected all the time in experimentation
Axial direction is held, and ensure that test pulling force overlaps with the axis of fixture and test block.
As shown in figure 1, there is a longitudinal fluting through fixture, groove arc part radius of curvature and piece in fixture lower end
The excessive radius of curvature of shape tensile sample circular arc is consistent, it is ensured that sample two ends in drawing process accept uniformly, lower end parallel portion
It is consistent with sample parallel-segment width, it is ensured that fixture, sample, active force are in parastate in sample loading process.
Groove top is sample cell 8, and the width of sample cell 8 is more slightly larger than thickness of sample, both ensure that sample 4 can be with without hindrance
Put fixture into, can be effectively ensured its sample thickness azimuth axis and pulling force diameter parallel again.
As shown in figure 1, the structure of lower clamp body 5 is identical with the structure of upper fixture body 3.
When being stretched, first upper fixture body 3 is connected with test machine upper connecting rod 1, after sample puts groove into, then by under
Clamp body 5 is connected with test machine lower link 6, during sample 4 finally put into sample cell 8, adjusts the height of test machine upper and lower strut,
Sample is set to keep plumbness.
As it will be easily appreciated by one skilled in the art that preferred embodiment of the present utility model is the foregoing is only, not
It is used to limit the utility model, all any modifications made within spirit of the present utility model and principle, equivalent and changes
Enter, should be included within protection domain of the present utility model.
Claims (5)
1. a kind of plate tensile sample stretching clamp, it is characterised in that the fixture includes：Clamp body (3,5), its one end is provided with pin hole
(7), and by pin (2) and tensile testing machine connecting rod (1,6) connect, for ensureing test pulling force, fixture and test block
Axis overlap, the other end of the clamp body (3,5) is provided with a longitudinal fluting through fixture, the bottom of the groove
It is sample cell (8) that the width of sample cell (8) is more slightly larger than the thickness of test specimen (4), for ensureing that sample (4) can put the folder into
Specifically tension test is carried out in (3,5).
2. a kind of plate tensile sample stretching clamp according to claim 1, it is characterised in that the bottom of the groove is circular arc
Shape, the radius of curvature of the circular arc is consistent with the circular arc curvature radius of sample (4), for ensureing that the sample (4) was being stretched
Clamp body is brought into close contact described in Cheng Zhongyu.
3. a kind of plate tensile sample stretching clamp according to claim 1 and 2, it is characterised in that the groove is near folder
Specific end sections are parallel portion, and the parallel portion is consistent with the width of sample (4) parallel-segment, for ensureing in sample
(4) in loading process, fixture, sample, pulling force are in parastate.
4. a kind of plate tensile sample stretching clamp according to claim 1 and 2, it is characterised in that the groove carries out chamfering
Treatment, to avoid stress concentration.
5. a kind of plate tensile sample stretching clamp according to claim 1 and 2, it is characterised in that the clamp body (3,5)
Material is high intensity nickel-base high-temperature alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621291132.5U CN206248465U (en) | 2016-11-29 | 2016-11-29 | A kind of plate tensile sample stretching clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621291132.5U CN206248465U (en) | 2016-11-29 | 2016-11-29 | A kind of plate tensile sample stretching clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206248465U true CN206248465U (en) | 2017-06-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621291132.5U Active CN206248465U (en) | 2016-11-29 | 2016-11-29 | A kind of plate tensile sample stretching clamp |
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| CN (1) | CN206248465U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483019A (en) * | 2016-11-29 | 2017-03-08 | 华中科技大学 | A kind of plate tensile sample stretching clamp and its using method |
| CN107966362A (en) * | 2017-10-10 | 2018-04-27 | 中国科学院金属研究所 | A kind of metal plate-like sample dynamic is flushed with hydrogen tensile stress etching experimental rig |
-
2016
- 2016-11-29 CN CN201621291132.5U patent/CN206248465U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483019A (en) * | 2016-11-29 | 2017-03-08 | 华中科技大学 | A kind of plate tensile sample stretching clamp and its using method |
| CN107966362A (en) * | 2017-10-10 | 2018-04-27 | 中国科学院金属研究所 | A kind of metal plate-like sample dynamic is flushed with hydrogen tensile stress etching experimental rig |
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