CN208672439U - A kind of clamp structure of longitudinal direction arc tensile sample - Google Patents
A kind of clamp structure of longitudinal direction arc tensile sample Download PDFInfo
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- CN208672439U CN208672439U CN201821313023.8U CN201821313023U CN208672439U CN 208672439 U CN208672439 U CN 208672439U CN 201821313023 U CN201821313023 U CN 201821313023U CN 208672439 U CN208672439 U CN 208672439U
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- fixture block
- concave surface
- convex surface
- surface fixture
- sample
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Abstract
The utility model relates to a kind of clamp structures of longitudinal arc tensile sample, including convex surface fixture block, concave surface fixture block and pin；The convex surface of the convex surface fixture block and the concave surface of the concave surface fixture block mutually coincide, and form the clamping face of arc；The pin hole with same bayonet fittings is respectively arranged on the convex surface fixture block and the concave surface fixture block.The beneficial effects of the utility model are as follows: (1) the advantages of maintaining sample good to neutrality, uniform force by the clamping face of arc；(2) skidding of hard material is effectively avoided by the cooperation of pin and tensile sample；(3) prevent soft material from gap deformation occur by the cooperation of clamping face, pin and tensile sample.
Description
Technical field
The utility model relates to machinery fields, and in particular to a kind of clamp structure of longitudinal direction arc tensile sample.
Background technique
Tensile property is the fundamental mechanics performance of material.Pass through the performances such as the available material plasticity of extension test and intensity
Characterization parameter.Stretching standard regulation can be with using longitudinal when the tubing to wall thickness greater than 0.5mm carries out stretching experiment research
Arc sample (Fig. 1).When carrying out longitudinal arc sample tension test, need to test sample clamping on testing machine,
Sample clamping is to influence the most important factor of test result on neutral, stability.
Currently, the clamping method for longitudinal arc sample is to carry out clamping using clamping end of the level clamp to sample
(as shown in Figures 2 and 3), disadvantage is that specimen holder can be deformed, be caused to neutral difference and unbalance stress.
In view of this, special propose the utility model.
Utility model content
In view of the deficiencies in the prior art, the purpose of the utility model is to provide a kind of longitudinal arc tensile samples
Clamp structure improves in clamping process, and the case where gap deformation easily occur in sample skidding or unbalance stress.
The technical solution of the utility model is as follows:
A kind of clamp structure of longitudinal direction arc tensile sample, including convex surface fixture block, concave surface fixture block and pin；The convex surface folder
The convex surface of block and the concave surface of the concave surface fixture block mutually coincide, and form the clamping face of arc；The convex surface fixture block and the concave surface
The pin hole with same bayonet fittings is respectively arranged on fixture block.
Further, the clamp structure of above-mentioned longitudinal arc tensile sample, the radian and arc sample of the clamping face
Radian matching in the convex surface fixture block and the concave surface fixture block cooperation clamping face position of arc sample is carried out
Adjustment.
Further, the clamp structure of above-mentioned longitudinal arc tensile sample, the convex surface of the convex surface fixture block and described recessed
The localization region worked in coordination is respectively arranged on the concave surface of face fixture block.
Further, the clamp structure of above-mentioned longitudinal arc tensile sample, the localization region is located at described convex
The edge on the convex surface of face fixture block and the concave surface of the concave surface fixture block.
Further, the clamp structure of above-mentioned longitudinal arc tensile sample, the convex surface and concave surface are cambered surface.
Further, the clamp structure of above-mentioned longitudinal arc tensile sample, the pin are fixedly connected on the convex surface
In the pin hole of fixture block or concave surface fixture block.
Further, the clamp structure of above-mentioned longitudinal arc tensile sample, the convex surface and the concave surface cooperatively form
When clamping face, the convex surface fixture block and concave surface fixture block split form terrace with edge.
Further, the clamp structure of above-mentioned longitudinal arc tensile sample, the terrace with edge are truncated rectangular pyramids.
Further, the clamp structure of above-mentioned longitudinal arc tensile sample, the pin is cylindrical pins or section is
The pin of ellipse.
The beneficial effects of the utility model are as follows:
(1) the advantages of sample good to neutrality, uniform force being maintained by the clamping face of arc；
(2) skidding of hard material is effectively avoided by the cooperation of pin and tensile sample；
(3) prevent soft material from gap deformation occur by the cooperation of clamping face, pin and tensile sample；
(4) when pinching action, the radian cooperation of the radian and sample of clamping face can be finely adjusted the position of sample, match
Close the automatic centering operation that gravity realizes sample.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of longitudinal arc sample in the prior art.
Fig. 2 is the structural schematic diagram of level clamp.
Fig. 3 is the schematic diagram using level clamp clamping tensile sample.
Fig. 4 is the schematic diagram using pin clamping tensile sample.
Fig. 5 is the usage state diagram of the clamp structure of longitudinal arc tensile sample of the utility model.
Fig. 6 is the structural schematic diagram of convex surface fixture block.
Fig. 7 is the structural schematic diagram of concave surface fixture block.
In above-mentioned attached drawing, 1, convex surface fixture block；2, concave surface fixture block；3, pin hole；4, localization region；5, pin.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
In view of above-mentioned level clamp defect, utility model people devises arc folder face fixture and pin test method pair
The technical solution of arc tensile sample progress clamping.It is excellent that the scheme that face fixture carries out clamping to the clamping end of sample is pressed from both sides by arc
Point is: sample can preferably improve material deformation problem to neutral good, uniform force, the disadvantage is that: the harder sample of material is easy
It skids；Clamping (as shown in Figure 4) is carried out to sample using pin, the method need to use longitudinal arc sample with pin hole,
The advantages of the method is test to neutral good, the disadvantage is that: discontinuity, the sample that the material is soft are easy to appear at pin hole
Gap deformation.
As shown in figure 5, the utility model discloses a kind of clamp structure of longitudinal arc tensile sample, including convex surface fixture block
1, concave surface fixture block 2 and pin 5；The convex surface of the convex surface fixture block 1 and the concave surface of the concave surface fixture block 2 mutually coincide, and form arc
Clamping face；The pin hole 3 with the cooperation of same pin 5 is respectively arranged on the convex surface fixture block 1 and the concave surface fixture block 2.Institute
State pin 5 can be cylindrical pins or section be ellipse pin.
As shown in Figure 6 and Figure 7, it is respectively arranged with mutually on the convex surface of the convex surface fixture block 1 and the concave surface of the concave surface fixture block 2
The localization region 4 matched.Preferably, the localization region 4 is located at convex surface and the concave surface folder of the convex surface fixture block 1
The edge of the concave surface of block 2.The convex surface and concave surface are cambered surface.
In the present embodiment, after 2 split of convex surface fixture block 1 and concave surface fixture block pin 5 be inserted into pin hole 3 to fix tensile sample,
In other schemes, the pin 5 can also be fixedly connected in the pin hole 3 of the convex surface fixture block 1 or concave surface fixture block 2, such as
This, while convex surface fixture block 1 and concave surface 2 split of fixture block, pin 5 directly consolidates convex surface fixture block 1, concave surface fixture block 2 and tensile sample
It is fixed.
In the present embodiment, when the convex surface and the concave surface cooperatively form clamping face, the convex surface fixture block 1 and concave surface folder
2 split of block forms terrace with edge, is preferably truncated rectangular pyramids in the present embodiment.In this way, can be by acting on the longitudinal direction of the terrace with edge outer surface
Active force generate cross stream component, so that convex surface fixture block 1 and 2 garter extension of concave surface fixture block be made to try in the case where longitudinal force
Sample.The utility model presss from both sides face fixture by arc and carries out clamping to the clamping end of sample, and is also carried out using pin 5 to sample
It is fixed, by way of " not only sold but also pressed from both sides ", prevent soft material from going out by the cooperation of arc clamping face, pin 5 and tensile sample
Existing gap deformation, and then improve the stability and accuracy of sampling test.Preferably, the arc of the radian of clamping face and arc sample
Degree matching is adjusted the position of arc sample with the clamping face described in the convex surface fixture block and concave surface fixture block cooperation.
When pinching action, the radian cooperation of the radian and sample of clamping face can be finely adjusted the position of sample, cooperate gravity
Realize the automatic centering operation of sample.
Obviously, it is practical without departing from this can to carry out various modification and variations to the utility model by those skilled in the art
Novel spirit and scope.If in this way, belonging to the utility model claims to these modifications and variations of the present invention
And its within the scope of equivalent technology, then the utility model is also intended to include these modifications and variations.
Claims (9)
1. a kind of clamp structure of longitudinal direction arc tensile sample, it is characterised in that: including convex surface fixture block (1), concave surface fixture block (2) and
Pin (5)；The convex surface of the convex surface fixture block (1) and the concave surface of the concave surface fixture block (2) mutually coincide, and form the clamping of arc
Face；The pin hole (3) with same pin (5) cooperation is respectively arranged on the convex surface fixture block (1) and the concave surface fixture block (2).
2. the clamp structure of longitudinal direction arc tensile sample as described in claim 1, it is characterised in that: the radian of the clamping face
It is matched with the radian of arc sample with the clamping face described in the convex surface fixture block (1) and the concave surface fixture block (2) cooperation to arc
The position of shape sample is adjusted.
3. the clamp structure of longitudinal direction arc tensile sample as described in claim 1, it is characterised in that: the convex surface fixture block (1)
Convex surface and the concave surface fixture block (2) concave surface on be respectively arranged with the localization region (4) worked in coordination.
4. the clamp structure of longitudinal direction arc tensile sample as claimed in claim 3, it is characterised in that: the localization region (4)
It is located at the edge on the convex surface of the convex surface fixture block (1) and the concave surface of the concave surface fixture block (2).
5. the clamp structure of longitudinal direction arc tensile sample as described in claim 1, it is characterised in that: the convex surface and concave surface are equal
For cambered surface.
6. the clamp structure of longitudinal direction arc tensile sample a method as claimed in any one of claims 1 to 5, it is characterised in that: the pin
(5) it is fixedly connected in the pin hole (3) of the convex surface fixture block (1) or concave surface fixture block (2).
7. the clamp structure of longitudinal direction arc tensile sample a method as claimed in any one of claims 1 to 5, it is characterised in that: the convex surface and
When the concave surface cooperatively forms clamping face, the convex surface fixture block (1) and (2) split of concave surface fixture block form terrace with edge.
8. the clamp structure of longitudinal direction arc tensile sample as claimed in claim 7, it is characterised in that: the terrace with edge is tetragonous
Platform.
9. the clamp structure of longitudinal direction arc tensile sample a method as claimed in any one of claims 1 to 5, it is characterised in that: the pin
(5) be cylindrical pins or section is the pin of ellipse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821313023.8U CN208672439U (en) | 2018-08-15 | 2018-08-15 | A kind of clamp structure of longitudinal direction arc tensile sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821313023.8U CN208672439U (en) | 2018-08-15 | 2018-08-15 | A kind of clamp structure of longitudinal direction arc tensile sample |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208672439U true CN208672439U (en) | 2019-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821313023.8U Active CN208672439U (en) | 2018-08-15 | 2018-08-15 | A kind of clamp structure of longitudinal direction arc tensile sample |
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| CN (1) | CN208672439U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760481A (en) * | 2018-08-15 | 2018-11-06 | 中国原子能科学研究院 | A kind of clamp structure of longitudinal direction arc tensile sample |
-
2018
- 2018-08-15 CN CN201821313023.8U patent/CN208672439U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760481A (en) * | 2018-08-15 | 2018-11-06 | 中国原子能科学研究院 | A kind of clamp structure of longitudinal direction arc tensile sample |
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