CN206876480U - Removable dynamic tensile test fixture - Google Patents
Removable dynamic tensile test fixture Download PDFInfo
- Publication number
- CN206876480U CN206876480U CN201720631601.1U CN201720631601U CN206876480U CN 206876480 U CN206876480 U CN 206876480U CN 201720631601 U CN201720631601 U CN 201720631601U CN 206876480 U CN206876480 U CN 206876480U
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- main clamp
- sub
- tensile test
- test fixture
- truncated conical
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Abstract
The utility model discloses a kind of removable dynamic tensile test fixture, including main clamp, sub-folder tool, reinforced sheet and the fixture that is screwed；Main clamp one end is cylindrical structure, and inside is provided with blind round hole；The other end is half truncated conical structure, and its end lateral wall is provided with external screw thread, and medial center is longitudinally disposed fluted；The shape and structure of sub-folder tool are identical with the truncated conical structure of main clamp half, and the two matches with a complete truncated conical structure, truncated conical structure cone bottom external diameter is combined into main clamp cylindrical structure external diameter；The shape of reinforced sheet and the shape of the groove match；The fixture that is screwed is hexgonal structure, and inside is provided with central through hole, and the madial wall of central through hole is provided with the internal thread being engaged with main clamp and sub-folder tool lateral wall screw thread；The utility model is easy to process, and assembly and disassembly is simple, and its internal realization ensure that the integrality of waveform transmission during experiment without pore space structure.
Description
Technical field
A kind of frock clamp is the utility model is related to, more particularly to a kind of dynamic tensile test fixture of fast assembling-disassembling.
Background technology
Separate type Hopkinson pull rod（Split Hopkinson Torsion Bar, SHTB）Technology is that research material exists
The important means of dynamic mechanical under high strain-rate, assumed and stress, strain edge in sample based on one-dimension stress wane in pull bar
Axially uniformly it is assumed that exporting the strain-stress relation in sample according to one-dismensional stress wave theory.In tensile loads, due to examination
Sample and test club interface will bear tension, it is necessary to using the connected mode for having certain tensile strength, and due to examination used in experiment
It is high, it is necessary to have big clamping or gluing of surfaces, to avoid sliding and stress concentration to test part fiber content.
Sample common at present has gluing to connect and be threadedly coupled with the connected mode of load bar.Gluing connected mode pilot scale
Sample is sheet dumb-bell shape, the incident bar being connected with sample and transmission rod end warp cutting processing grooving, using epoxy glue by sample
Cohered with load bar.Sample is mostly cylindric in thread connecting mode, and both ends are externally threaded, the incident bar that is connected with sample and
Transmission rod end attacks corresponding internal thread, is screwed to sample during experiment and realizes and connect on bar.Another typical dynamic tensile experiment
Fixture, fixture centre fluting place testpieces, and the gluing in groove, two parts of fixture are fixedly clamped with bolt.But at present
Gluing connected mode the shortcomings that be viscose hardening time length, bad dismounting, cleaning after experiment.The shortcomings that thread connecting mode is
Screw thread, which coordinates, there is gap, causes signal jitter.The shortcomings that middle notching construction is that the mode of gluing causes testpieces after experiment
Bad dismounting, and the mode fixed with bolt generates hole, understands the integrality of waveform transmission in failure test.
Utility model content
In view of the above-mentioned problems, providing a kind of convenient for assembly and dismounting, a variety of testpieces thickness are applicable to, and can guarantee that
Waveform transmits the dynamic tensile test fixture of integrality during experiment, what its goal of the invention was realized in：
A kind of removable dynamic tensile test fixture, including main clamp, sub-folder tool, reinforced sheet and the fixture that is screwed；
Wherein, the main clamp is " L " shape, and " L " short side one end is cylindrical structure, and the inside of cylindrical structure is provided with circle
Shape blind hole, blind hole is interior to be provided with the internal thread to match with Hopkinson pull rod；" L " long side one end is half truncated conical structure, should
Half truncated conical structure end lateral wall is provided with external screw thread, and medial center is longitudinally disposed fluted, and groove main body is rectangle
Flat structure, end are tubaeform；
The shape and structure of the sub-folder tool are identical with the truncated conical structure of main clamp half, its groove shapes and reinforced sheet phase
Matching；Main clamp and sub-folder tool the two with being combined into a complete truncated conical structure, truncated conical structure cone bottom external diameter and
Main clamp cylindrical structure external diameter matches；
The shape of the reinforced sheet and the shape of the groove match；During operation, the both sides up and down of sample are respectively bonded one
Individual reinforced sheet, one of reinforced sheet are positioned in the groove；
The fixture that is screwed is hexgonal structure, and inside is provided with central through hole, the madial wall of central through hole provided with
The internal thread that main clamp and sub-folder tool lateral wall screw thread are engaged.
Preferably, in removable dynamic tensile test fixture described in the utility model, main clamp and sub-folder have half tack
The external screw thread of conical structure end lateral wall is taper thread；The clamp central through hole internal thread that is screwed is taper thread.
Preferably, in removable dynamic tensile test fixture described in the utility model, the groove ends it is tubaeform
Constructional depth is gradually reduced to half truncated conical structural base to end certainly.
Preferably, in removable dynamic tensile test fixture described in the utility model, the cylinder of described main clamp one end
Body structure end face rounding, lateral wall are provided with four directions.
Preferably, in removable dynamic tensile test fixture described in the utility model, the groove and circle of the main clamp
Column structure junction is provided with circular arc chamfering.
Preferably, in removable dynamic tensile test fixture described in the utility model, the length of the reinforced sheet is less than
The length of the groove.
Compared with prior art, removable dynamic tensile test fixture provided by the utility model has advantages below：
（1）Reinforced sheet is lath-shaped used by the removable dynamic tensile test fixture of the utility model, easy to process,
It is widely used, the phenomenon of stress concentration can be avoided the occurrence of；
（2）The removable dynamic tensile test fixture of the utility model compresses sample, convenient dress using screw threads for fastening mode
Match somebody with somebody and dismantle, fixture is hardly damaged, and may be reused；
（3）The removable dynamic tensile test fixture of the utility model is without radial aperture, after being assembled with pull bar and sample
Inside realizes structural integrity, ensure that the integrality of waveform transmission during experiment without pore space structure；
（4）The removable dynamic tensile test fixture of the utility model can be by changing the thickness of reinforced sheet suitable for a variety of
Testpieces thickness, it is connected using reinforced sheet with testpieces, can increases adhesion strength, reinforced sheet one end uses oblique angle excessively can be with
Problem of stress concentration is eliminated to a certain extent, is compressed after being assembled again with fixture afterwards using nut, and clamp ends ramp down angle is de- to be set
Meter makes it can be applied to high intensity and strain rate experiment.
Brief description of the drawings
The general profile structural representation that it is originally utility model that Fig. 1, which is,.
Fig. 2 is the dimensional structure diagram of main clamp of the present utility model.
Fig. 3 is the dimensional structure diagram of sub-folder tool of the present utility model.
Fig. 4 is the dimensional structure diagram of the fixture of the present utility model that is screwed.
Fig. 5 is the dimensional structure diagram of reinforced sheet of the present utility model.
Fig. 6 is assembling structure schematic diagram of the present utility model.
In figure, 1, main clamp；2nd, sub-folder has；3rd, be screwed fixture；4th, reinforced sheet；5th, sample；6th, groove；7th, cylinder
Structure；8th, semicircle wimble structure.
Embodiment
The technical solution of the utility model is further illustrated by the following examples, but the utility model is not limited to
Following examples.
As Figure 1-5, a kind of removable dynamic tensile test fixture, including main clamp 1, sub-folder tool 2, reinforced sheet 3
With the fixture 4 that is screwed；
Wherein, main clamp 1 is " L " shape, and " L " short side one end is cylindrical structure 7, and the inside of cylindrical structure 7 is provided with circle
Shape blind hole, is provided with the internal thread to match with Hopkinson pull rod in blind hole, and the end face of cylindrical structure 7 is rounding, end face
Lateral wall is uniformly distributed four grooves（It is i.e. cubic）It is convenient for assembly；" L " long side one end is half truncated conical structure 8, and half tack is justified
The end lateral wall of wimble structure 8 is provided with external screw thread, medial center plane longitudinally disposed fluted 6, and the main body of groove 6 is that rectangle is flat
Flat structure, end are tubaeform, and the flared structure depth of the end of groove 6 is gradual to end certainly to half truncated conical structural base
Reduce, for placing sample；The groove 6 of main clamp 1 is provided with circular arc chamfering with the junction of cylindrical structure 7.
The shape and structure of sub-folder tool 2 are identical with half truncated conical structure 8 of main clamp 1, the sub-folder tool shape of 2 groove 6
Shape is identical with the shape of the groove 6 of main clamp 1, and matches with the shape of reinforced sheet 3；Main clamp 1 is matched somebody with somebody with both sub-folder tools 2 to be combined into
One complete truncated conical structure, truncated conical structure cone bottom external diameter match with the external diameter of 1 cylindrical structure of main clamp 7,
And its center is groove 6；
The shape of reinforced sheet 3 and the shape of main clamp 1 and the groove 6 of sub-folder tool 2 match, and are the cuboid with inclined-plane,
The length of reinforced sheet 3 is less than the length of groove 6；During operation, one is respectively bonded in the outside of sample 5, the both sides up and down of sample 5 with gluing
Individual reinforced sheet, one of reinforced sheet are positioned in groove 6.
The fixture 4 that is screwed is hexgonal structure, and inside is provided with central through hole, the madial wall of central through hole provided with
The internal thread that main clamp and sub-folder tool lateral wall screw thread are engaged.
In the present embodiment, the external screw thread of half truncated conical structure end lateral wall of main clamp 1 and sub-folder tool 2 is cone spiral shell
Line；The central through hole internal thread of fixture 3 that is screwed is taper thread.
In the present embodiment, the length of main clamp 1 is 62cm；The external diameter of cylindrical structure 7 is 40cm；The internal diameter of blind round hole
For 20cm；The thickness of fixture 4 of being screwed is 15cm, is highly 46.2cm；The removable dynamic tensile test fixture owns
The material of part is aviation high strength alumin ium alloy 7075.
Installation step：
Reinforced sheet 4 is connected in the side of sample 5, main clamp 1 with gluing with supporting pull bar by blind round hole internal thread,
Main clamp 1 and sub-folder tool 2 fix sample 5 by the groove 6 at center, and the fixture 3 that is screwed passes through the internal thread on taper hole and master
External screw thread on fixture 1, sub-folder tool 2 coordinates.
Test operation：
Before experiment, detected materials are cut into lath-shaped sample 5, its width must be with main clamp 1 and the groove 6 of sub-folder tool 2
Match, sample 5 is put into the groove 6 of main clamp 1 in the two sides of sample 5 by two panels reinforced sheet 4 with gluing, then will
The groove of sub-folder tool 2 is adjacent to sample 5, then the fixture 3 that will be screwed is screwed in main clamp 1 and sub-folder tool 2, makes the folder that is screwed
The conical surface for having the conical surface and main clamp 1, sub-folder tool 2 of 3 internal taper holes agrees with, and it is fixed to ensure that test specimen will not slip, most
Afterwards by main clamp 1 by the screw-internal thread fit that is engaged with pull bar on pull bar, as shown in fig. 6, pass through dynamic tensile complete it is high
Strain rate is tested.
Claims (6)
1. a kind of removable dynamic tensile test fixture, it is characterised in that including main clamp, sub-folder tool, reinforced sheet and screw thread
Stationary fixture；
Wherein, described main clamp one end is cylindrical structure, and inside is provided with blind round hole, is provided with blind hole and Hopkinson pull rod
The internal thread to match；The other end is half truncated conical structure, and the half truncated conical structure end lateral wall is provided with external screw thread, interior
Side center is vertically arranged with groove, and groove main body is rectangular flat structure, and end is tubaeform；
The shape and structure of the sub-folder tool are identical with the truncated conical structure of main clamp half, and the two, which is matched somebody with somebody, is combined into a complete tack
Conical structure, truncated conical structure cone bottom external diameter match with main clamp cylindrical structure external diameter；
The shape of the reinforced sheet and the shape of the groove match；
The fixture that is screwed is hexgonal structure, and inside is provided with central through hole, and the madial wall of central through hole is provided with and main folder
The internal thread that tool and sub-folder tool lateral wall screw thread are engaged.
2. removable dynamic tensile test fixture according to claim 1, it is characterised in that：Main clamp and sub-folder tool half are flat
The external screw thread of head conical structure end lateral wall is taper thread；The clamp central through hole internal thread that is screwed is taper thread.
3. removable dynamic tensile test fixture according to claim 1, it is characterised in that：The loudspeaker of the groove ends
Shape constructional depth is gradually reduced to end.
4. removable dynamic tensile test fixture according to claim 1, it is characterised in that：The circle of described main clamp one end
Column structure end face rounding, lateral wall are provided with four directions.
5. removable dynamic tensile test fixture according to claim 1, it is characterised in that：The groove of the main clamp with
Cylindrical structure junction is provided with circular arc chamfering.
6. removable dynamic tensile test fixture according to claim 1, it is characterised in that：The length of the reinforced sheet is small
In the length of the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720631601.1U CN206876480U (en) | 2017-06-02 | 2017-06-02 | Removable dynamic tensile test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720631601.1U CN206876480U (en) | 2017-06-02 | 2017-06-02 | Removable dynamic tensile test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206876480U true CN206876480U (en) | 2018-01-12 |
Family
ID=61337875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720631601.1U Active CN206876480U (en) | 2017-06-02 | 2017-06-02 | Removable dynamic tensile test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206876480U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956282A (en) * | 2018-07-10 | 2018-12-07 | 东南大学 | A kind of special fixture for the test of medical polymer material mechanical performance |
| CN111272539A (en) * | 2020-04-02 | 2020-06-12 | 合肥姜水动态力学实验技术有限公司 | Dynamic tensile test piece connecting device |
| CN111572053A (en) * | 2020-05-29 | 2020-08-25 | 常州达姆斯检测技术有限公司 | Processing method of composite material test sample strip |
-
2017
- 2017-06-02 CN CN201720631601.1U patent/CN206876480U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956282A (en) * | 2018-07-10 | 2018-12-07 | 东南大学 | A kind of special fixture for the test of medical polymer material mechanical performance |
| CN108956282B (en) * | 2018-07-10 | 2021-01-12 | 东南大学 | Special clamp for mechanical property test of medical polymer material |
| CN111272539A (en) * | 2020-04-02 | 2020-06-12 | 合肥姜水动态力学实验技术有限公司 | Dynamic tensile test piece connecting device |
| CN111572053A (en) * | 2020-05-29 | 2020-08-25 | 常州达姆斯检测技术有限公司 | Processing method of composite material test sample strip |
| CN111572053B (en) * | 2020-05-29 | 2021-12-14 | 常州达姆斯检测技术有限公司 | Processing method of composite material test sample strip |
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