CN206546296U - A kind of through groove fixture for micro- gauge length lamellar sample extension test - Google Patents
A kind of through groove fixture for micro- gauge length lamellar sample extension test Download PDFInfo
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- CN206546296U CN206546296U CN201621185587.9U CN201621185587U CN206546296U CN 206546296 U CN206546296 U CN 206546296U CN 201621185587 U CN201621185587 U CN 201621185587U CN 206546296 U CN206546296 U CN 206546296U
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Abstract
The utility model devises a kind of through groove fixture for micro- gauge length lamellar sample extension test, compared to existing General clamping or fixture, the micro- gauge length of minimum 3mm length, the extension test of 0.3~0.5mm thick plates bar samples can be met, and is suitable for use with video extensometer to obtain accurate extension test data.The utility model mainly includes the split pin of jig body and clamping sample.The tensile loads of micro- gauge length sample are realized by the horizontal shoulders of T-shaped through groove on fixture；Sample is clamped by split pin and avoids unstability during extension test, it is ensured that the stabilization of tensile loads；Designed using the through groove of fixture, the mark point of sample gauge length is unobstructed；Inclined-plane is processed in fixture front end, reduces because of the inadequate problem of sample brightness caused by influence of the through groove depth to ambient light irradiating sample, is easy to sensing of the video extensometer to sample gauge length mark point.
Description
Technical field
The utility model is related to a kind of fixture for lath sample extension test, is characterized in compared to existing General clamping
Or fixture, the micro- gauge length of minimum 3mm length, the extension test of 0.3~0.5mm thick plates bar samples can be met, and suitable for making
With video extensometer to obtain accurate extension test data.
Background technology
At present, the development studied with material science, material preparation technology usually has many such as high temperature, high pressure, big change
The extreme conditions such as shape, extremely low temperature, or the special material such as nanopowder.It is limited to the consideration such as technique, cost, these special systems
Standby condition is often realized that the final size of resulting sample is extremely short and small, such as, titanium-alloy high-pressure by special process equipment
The sample size that torsional deflection is prepared is about 10mm or so diameters, 0.5mm left and right thicknesses, the ribbon obtained after cutting
Sample can only have 8mm or so with total length.For such sample, when carrying out Measuring Mechanical Properties, according to extension test country
The sample gauge length that standard processing is obtained is 3 between 4mm, and existing general fixture or fixture are all unsatisfactory for requiring.With
With the requirement to test data accuracy, more and more video extensometer is employed in extension test simultaneously for this.Using
When video extensometer carries out the extension test of sample, it is desirable to which sample gauge length mark point can have enough illumination, in order to which video prolongs
Fixture can be reduced as far as possible to sample light by stretching optical sensor of the meter acquisition to mark point, therefore also needing to the design of clamp structure
Influence.
In order to solve the problems, such as the extension test of such sample, the T-shaped of split pin clamping sample of the present utility model is devised
Through groove fixture scheme.
The content of the invention
The utility model solve technical problem be：
1) tensile loads of micro- gauge length sample are realized by the horizontal shoulders design of T-shaped through groove on fixture.
2) sample is clamped by split pin, increases the rigidity of the end of micro- gauge length sample in a thickness direction, it is to avoid stretching
Unstability in test process, it is ensured that the stabilization of tensile loads.
3) during extension test, micro- gauge length sample is positioned in the T-shaped through groove of fixture, and the mark point of sample gauge length is not obstructed
Gear, is conducive to the extension test into the micro- gauge length sample of limit by row.
4) inclined-plane is processed in fixture front end, reduced because of sample caused by influence of the through groove depth to ambient light irradiating sample
The inadequate problem of product brightness, is easy to sensing of the video extensometer to sample gauge length mark point.
The utility model solves the technical scheme that its technical problem used：
T-shaped through groove is designed on fixture, the horizontal shoulders of T-shaped through groove are used to load the horizontal position of swatched end.It is T-shaped
Through groove narrow slot width is slightly larger than sample uniform segment width, and sipes width is more slightly larger than swatched end width.T-shaped through groove shoulder processing
0.5mm knuckle.
Split pin is cut out the clamping gap slightly larger than thickness of sample, the present embodiment by standard straight pin on the basis of center line
Middle clamping gap width 0.6mm, stretching thickness of sample requirement is not more than 0.5mm.Split pin front opening is machined with 10 ° of guiding
Angle, so that swatched end edge is directed into split pin gap in loading procedure.Split pin clamps slot ends by elastic card
Bind round and tight, it is ensured that the clamping gap of split pin increases the end of micro- gauge length sample in a thickness direction to the clamping action of sample
Rigidity, it is to avoid unstability during extension test, it is ensured that the stabilization of tensile loads.Pin hole processing in chuck body, aperture is with opening
The a diameter of gap of mouth pin coordinates, in order to which when sample is by pulling force centering in drawing process, split pin can be rotated freely, it is to avoid
The clamping gap of split pin produces to sample direction and limited and disturbed test result.The pin-and-hole processed in chuck body with it is T-shaped
Groove shoulder is tangent, fully ensures that clamping effect of the split pin to sample.
During extension test, micro- gauge length sample is positioned in the T-shaped through groove of fixture, and the mark point of sample gauge length is unobstructed.
According to design, the T-shaped through groove Shoulder thickness of the utility model fixture is that 1.5mm can ensure that fixture is not sent out when breaking stretching sample
It is raw to damage, therefore it is 3mm that can carry out the minimum gauge length of the sample of extension test, it is general much smaller than what existing extension test was used
Fixture.Inclined-plane is processed in fixture front end, makes sample gauge length mark point from the Distance Shortened on fixture surface, reduces because through groove depth
The inadequate problem of sample brightness caused by influence to ambient light irradiating sample, is easy to sense of the video extensometer to gauge length mark point
Should.Process 60 ° of inclined-plane in specific embodiment of the utility model on fixture, sample gauge length mark point from fixture surface away from
From about 2.4mm.
The beneficial effects of the utility model are：
The utility model design structure is easy, and the clear principle of realization understands, solves existing general fixture or folder
Not the problem of tool does not apply to micro- gauge length sample extension test.It is simple to operate in actual test, it is easy to grasp.In a particular embodiment,
Contrast and the stretching data of existing test specimens, multi-drawing testing experiment shows that test result is reproducible, of the present utility model
Design is had no adverse effects to test result, and meet is needed using micro- gauge length lath sample extension test of video extensometer
Will.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is structure principle chart of the present utility model.
Fig. 2 is sample loading schematic diagram.
Fig. 3 is fixture and sample size graph of a relation.
Fig. 4 is split pin clamping gap size figure.
1- fixtures, 2- split pins, 3- stretchings sample, 4- flexible collars in figure.
Embodiment
In Fig. 1, stretching sample (3) is positioned in fixture (1) T-shaped through groove, split pin (2) grab tensile sample (3)
End, split pin (2) clamps slot ends by flexible collar (4) and tight.Fixture (1) end thread be connected with cupping machine into
Row stretching experiment.
In fig. 2, fluorescence labeling point on the middle uniform segment point of stretching sample (3), is positioned in fixture (1) T-shaped through groove.Card
Tool (1) T-shaped through groove Shoulder thickness is 1.5mm.60 ° of inclined-planes are processed in fixture (1) front end, make sample gauge length mark point from fixture table
The Distance Shortened in face, about 2.4mm.
In figure 3, fluorescence labeling point on the middle uniform segment point of stretching sample (3), centering is positioned over fixture (1) T-shaped through groove
It is interior.The narrow slot width of fixture (1) T-shaped through groove is than sample uniform segment width per the big 0.1mm in side, and sipes width is than swatched end width
Per the big 0.25mm in side, T-shaped through groove shoulder processes 0.5mm knuckle.
In Fig. 4, split pin (2) clamping gap width 0.6mm, front opening is machined with 10 ° of guide angle.
Employed in the present embodiment sample for strip sample, meet National Standard of the People's Republic of China GB/T228-
2002《Metal material tensile testing at ambient temperature》Specified standard.The used material stretching-machine model of experiment
Instron-5848Micro Tester(2KN)。
Claims (5)
1. a kind of through groove fixture for micro- gauge length lamellar sample extension test, it is characterised in that include two fixtures
(1), two split pins (2), two flexible collars (4), it is real that fixture (1) end thread couples progress stretching with cupping machine
Test, be applicable but not only limit carries out the micro- gauge length lamellar sample drawing of minimum 3mm length suitable for the cupping machine of Video Extensometer
Stretch test.
2. a kind of through groove fixture for micro- gauge length lamellar sample extension test as claimed in claim 1, its feature exists
In stretching sample (3) is positioned in the fixture (1) T-shaped through groove, the end of split pin (2) the clamping stretching sample (3)
Portion, split pin (2) clamps slot ends by the flexible collar (4) and tight, fixture (1) end thread and cupping machine
Connection carries out stretching experiment.
3. a kind of through groove fixture for micro- gauge length lamellar sample extension test as claimed in claim 1, its feature exists
In the inclined-plane of 60 ° of processing on the fixture (1), when being determined using Video Extensometer but being not limited only to ess-strain, in stretching
Uniform segment upper fluorescence labeling point of point needed in the middle of sample (3), stretching sample (3) the gauge length mark point is from fixture surface
Distance is 2.4mm, is positioned in the fixture (1) T-shaped through groove.
4. a kind of through groove fixture for micro- gauge length lamellar sample extension test as claimed in claim 1, its feature exists
In the narrow slot width of the T-shaped through groove of the fixture (1) is than sample uniform segment width per the big 0.1mm in side, and sipes width compares swatched end
Width is per the big 0.25mm in side, and T-shaped through groove shoulder processes 0.5mm knuckle.
5. a kind of through groove fixture for micro- gauge length lamellar sample extension test as claimed in claim 1, its feature exists
In the split pin (2) clamps gap width 0.6mm, and front opening is machined with 10 ° of guide angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621185587.9U CN206546296U (en) | 2016-11-04 | 2016-11-04 | A kind of through groove fixture for micro- gauge length lamellar sample extension test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621185587.9U CN206546296U (en) | 2016-11-04 | 2016-11-04 | A kind of through groove fixture for micro- gauge length lamellar sample extension test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206546296U true CN206546296U (en) | 2017-10-10 |
Family
ID=59993620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621185587.9U Expired - Fee Related CN206546296U (en) | 2016-11-04 | 2016-11-04 | A kind of through groove fixture for micro- gauge length lamellar sample extension test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206546296U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918257A (en) * | 2018-07-13 | 2018-11-30 | 上海交通大学 | A kind of stretching clamp for Al and Al superalloy sheet microspecimen |
| CN112630025A (en) * | 2020-12-04 | 2021-04-09 | 安徽坤源铝业有限公司 | Aluminum plate performance detection device |
| CN113866007A (en) * | 2021-08-19 | 2021-12-31 | 中国原子能科学研究院 | Device suitable for high and low temperature radioactive plate-shaped fatigue test |
-
2016
- 2016-11-04 CN CN201621185587.9U patent/CN206546296U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918257A (en) * | 2018-07-13 | 2018-11-30 | 上海交通大学 | A kind of stretching clamp for Al and Al superalloy sheet microspecimen |
| CN112630025A (en) * | 2020-12-04 | 2021-04-09 | 安徽坤源铝业有限公司 | Aluminum plate performance detection device |
| CN113866007A (en) * | 2021-08-19 | 2021-12-31 | 中国原子能科学研究院 | Device suitable for high and low temperature radioactive plate-shaped fatigue test |
| CN113866007B (en) * | 2021-08-19 | 2022-11-25 | 中国原子能科学研究院 | Device suitable for high and low temperature radioactive plate-shaped fatigue test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171010 Termination date: 20181104 |