CN213813121U - Auxiliary positioning fixture for sample fatigue test - Google Patents
Auxiliary positioning fixture for sample fatigue test Download PDFInfo
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- CN213813121U CN213813121U CN202022499129.5U CN202022499129U CN213813121U CN 213813121 U CN213813121 U CN 213813121U CN 202022499129 U CN202022499129 U CN 202022499129U CN 213813121 U CN213813121 U CN 213813121U
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- sample
- fatigue test
- auxiliary positioning
- ring
- positioning fixture
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- 238000009661 fatigue test Methods 0.000 title claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 abstract description 6
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of positioning clamps for material tests, in particular to an auxiliary positioning clamp for sample fatigue tests, which comprises a first fastening component, a second fastening component and a telescopic rod, wherein the first fastening component and the second fastening component are connected through the telescopic rod; the first fastening assembly comprises a fixing ring, a screw and a rubber cushion block, wherein the screw penetrates through the fixing ring and clamps the chuck of the testing machine through the rubber cushion block; the second fastening assembly comprises a positioning ring, a spring and a clamping block, wherein the spring is arranged in the positioning ring and fixedly connected with the clamping block so as to clamp and position the sample; the utility model has the advantages of being simple in structure and convenient in operation, save the time of artifical calibration sample position, improved work efficiency, in addition, relatively more nimble to the size of sample, the application scope is extensive to can carry out high-efficient accurate position calibration to the sample.
Description
Technical Field
The utility model belongs to the technical field of the positioning fixture of material test, concretely relates to auxiliary positioning fixture for sample fatigue test.
Background
The fatigue test is a test method for measuring material characteristics under cyclic load, and in the fatigue test, external influence factors need to be discharged, and a sample is accurately positioned. Finished mechanical components made from stock materials often face different environments of use because the relevant factors are not considered during the manufacturing process, which results in mechanical components that do not reach the design life, in large part because of the effects of loads, particularly cyclic loads, causing material fatigue and accelerating material failure.
Therefore, the test auxiliary positioning fixture needs to be improved to overcome the defects in practical application.
SUMMERY OF THE UTILITY MODEL
Based on the above-mentioned shortcomings and deficiencies in the prior art, it is an object of the present invention to at least solve one or more of the above-mentioned problems in the prior art, in other words, to provide an auxiliary positioning fixture for sample fatigue testing that satisfies one or more of the above-mentioned needs.
In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme:
an auxiliary positioning clamp for a sample fatigue test comprises a first fastening assembly, a second fastening assembly and a telescopic rod, wherein the first fastening assembly is connected with the second fastening assembly through the telescopic rod; the first fastening assembly comprises a fixing ring, a screw and a rubber cushion block, wherein the screw penetrates through the fixing ring and clamps the chuck of the testing machine through the rubber cushion block; the second fastening assembly comprises a positioning ring, a spring and a clamping block, wherein the spring is installed in the positioning ring and fixedly connected with the clamping block so as to clamp and position the sample.
As the preferred scheme, a plurality of telescopic rods are arranged between the fixing ring and the positioning ring.
As a preferred scheme, a plurality of springs are symmetrically distributed in the positioning ring, one end of each spring is fixed on the positioning ring, and the other end of each spring is fixedly connected with the clamping block.
Preferably, the surface of the clamping block is provided with a rubber sheet which is abutted against the sample.
As the preferred scheme, the fixed ring is evenly provided with a plurality of threaded holes along the circumferential direction, and the threaded holes correspond to the threaded rods one to one.
Preferably, a rubber cushion block is arranged between the screw and the chuck of the tester.
Preferably, the chuck of the testing machine is provided with a pattern structure and is used for abutting against the rubber cushion block.
Preferably, the center positions of the fixing ring and the positioning ring correspond to each other in the vertical direction.
Preferably, the screw is fitted with a nut.
Compared with the prior art, the utility model, beneficial effect is:
the utility model provides an assistance-localization real-time anchor clamps for sample fatigue test, simple structure, convenient operation save the time of artifical calibration sample position, have improved work efficiency, in addition, relatively more nimble to the size of sample, the application face is extensive to can carry out high-efficient accurate position calibration to the sample.
Drawings
Fig. 1 is a schematic view of an overall structure of an auxiliary positioning fixture for a sample fatigue test according to a first embodiment of the present invention;
fig. 2 is a schematic view of a first fastening assembly of an auxiliary positioning fixture for a sample fatigue test according to a first embodiment of the present invention;
fig. 3 is a schematic view of an operating state of an auxiliary positioning fixture for a sample fatigue test according to a first embodiment of the present invention;
in the figure: 1 fixed ring, 2 rubber cushion blocks, 3 nuts, 4 screws, 5 telescopic rods, 6 positioning rings, 7 springs, 8 clamping blocks and 9 test machine chucks.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention, the following description will explain embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.
The first embodiment is as follows:
as shown in fig. 1 to 3, the present embodiment provides an auxiliary positioning fixture for a sample fatigue test, which includes a first fastening component, a second fastening component and a telescopic rod 5, wherein the first fastening component and the second fastening component are connected through the telescopic rod 5; the first fastening assembly comprises a fixing ring 1, a screw rod 4 and a rubber cushion block 2, wherein the screw rod 5 penetrates through the fixing ring 1 and clamps a chuck 9 of the testing machine through the rubber cushion block 2; the second fastening assembly comprises a positioning ring 6, a spring 7 and a clamping block 8, wherein the spring 7 is installed in the positioning ring 5, and the spring 7 is fixedly connected with the clamping block 8 so as to clamp and position the sample.
Wherein, be equipped with several telescopic link 5 between solid fixed ring 1 and the holding ring 6, telescopic link 5 can set up two, three, four or more, specifically can set up according to the actual demand. The telescopic rod 5 not only can play a supporting role, but also can adjust the length, and the distance between the fixing ring 1 and the positioning ring 6 is adjusted according to the size of the sample, so that the telescopic rod adapts to the change of the length reverse size of different samples.
The center positions of the fixed ring 1 and the positioning ring 6 correspond to each other in the vertical direction. Before use, two symmetrical clamping blocks 8 are close to each other, and a test sample is symmetrically placed in the center of the positioning ring 6 through the compression spring 7. Accordingly, the test specimen is placed in the center of the positioning ring 8, so that the chuck of the testing machine is consistent with the test specimen in the vertical direction.
In the embodiment, at least two springs 7 are arranged, and the two springs 7 are arranged oppositely to realize positioning and clamping of the plate-shaped sample. The springs 7 can be also provided with three springs 7, the three springs 7 are uniformly arranged on the inner wall of the positioning ring 6 and are respectively connected with the clamping blocks 8, so that the triangular plate-shaped sample can be positioned and clamped. Similarly, in practical application, as for other irregular sample shapes, the number of springs can be correspondingly set according to the sample shape, so that the sample can be accurately positioned and clamped.
In this embodiment, the fixing ring 1 is evenly provided with a plurality of threaded holes along the circumferential direction, the threaded holes correspond to the threaded rods 4 one by one, and the rubber cushion blocks 2 are arranged between the threaded rods 4 and the chuck 9 of the testing machine.
The screw holes in the embodiment are four, four screw rods are correspondingly installed on the screw rods, a nut is installed on each screw rod in a matched mode, the screw rods are pushed to advance through the fastening nuts, the rubber cushion blocks are placed between the screw rods and the chuck of the testing machine, the nuts are fastened again, and finally the first fastening assembly is fixed on the outer surface of the chuck of the testing machine. The number of the screws can be set according to actual requirements so as to ensure that the clamp head of the tester is accurately fastened in the fixing ring.
Wherein, testing machine chuck 9 has the decorative pattern structure for it is inconsistent with rubber cushion 2, the decorative pattern structure can play the effect of increasing contact friction.
The working principle of the embodiment is as follows: symmetrical fastening force is respectively applied to the chuck of the testing machine and the sample, the fastening force of the chuck of the testing machine is implemented through the first fastening component, and the screw is mainly pushed to advance through a nut of the first fastening component; the fastening force of the sample is composed of two groups of symmetrical clamping blocks and springs, and the sample is fixed in the center of the clamp through the rebound force given by the compression springs.
The foregoing has been a detailed description of the preferred embodiments and principles of the present invention, and it will be apparent to those skilled in the art that variations may be made in the specific embodiments based on the concepts of the present invention, and such variations are considered as within the scope of the present invention.
Claims (9)
1. An auxiliary positioning clamp for a sample fatigue test is characterized by comprising a first fastening component, a second fastening component and a telescopic rod, wherein the first fastening component and the second fastening component are connected through the telescopic rod; the first fastening assembly comprises a fixing ring, a screw and a rubber cushion block, wherein the screw penetrates through the fixing ring and clamps the chuck of the testing machine through the rubber cushion block; the second fastening assembly comprises a positioning ring, a spring and a clamping block, wherein the spring is installed in the positioning ring and fixedly connected with the clamping block so as to clamp and position the sample.
2. The auxiliary positioning fixture for the fatigue test of the sample as claimed in claim 1, wherein a plurality of telescopic rods are arranged between the fixing ring and the positioning ring.
3. The auxiliary positioning fixture for the fatigue test of the sample as claimed in claim 1, wherein a plurality of springs are symmetrically arranged in the positioning ring, one end of each spring is fixed on the positioning ring, and the other end of each spring is fixedly connected with the clamping block.
4. The auxiliary positioning fixture for the sample fatigue test according to claim 3, wherein the surface of the clamping block is provided with a rubber sheet, and the rubber sheet is abutted against the sample.
5. The auxiliary positioning fixture for the sample fatigue test according to claim 1, wherein the fixing ring is uniformly provided with a plurality of threaded holes along the circumferential direction, and the threaded holes correspond to the threaded rods one to one.
6. The auxiliary positioning fixture for the sample fatigue test is characterized in that a rubber cushion block is arranged between the screw and the chuck of the test machine.
7. An auxiliary positioning fixture for a sample fatigue test according to claim 6, wherein the chuck of the testing machine has a pattern structure for abutting against the rubber pad.
8. The auxiliary positioning fixture for the sample fatigue test according to claim 1, wherein the center positions of the fixing ring and the positioning ring correspond to each other in the vertical direction.
9. The auxiliary positioning fixture for the sample fatigue test according to claim 1, wherein a nut is fitted on the screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022499129.5U CN213813121U (en) | 2020-11-03 | 2020-11-03 | Auxiliary positioning fixture for sample fatigue test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022499129.5U CN213813121U (en) | 2020-11-03 | 2020-11-03 | Auxiliary positioning fixture for sample fatigue test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213813121U true CN213813121U (en) | 2021-07-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022499129.5U Expired - Fee Related CN213813121U (en) | 2020-11-03 | 2020-11-03 | Auxiliary positioning fixture for sample fatigue test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213813121U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323911A (en) * | 2021-12-07 | 2022-04-12 | 东风汽车集团股份有限公司 | Spacing centering device of compression sample |
-
2020
- 2020-11-03 CN CN202022499129.5U patent/CN213813121U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323911A (en) * | 2021-12-07 | 2022-04-12 | 东风汽车集团股份有限公司 | Spacing centering device of compression sample |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210727 |