CN210071482U - Sample wire pressing ring detection centering device for uniaxial tensile test - Google Patents
Sample wire pressing ring detection centering device for uniaxial tensile test Download PDFInfo
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- CN210071482U CN210071482U CN201920399070.7U CN201920399070U CN210071482U CN 210071482 U CN210071482 U CN 210071482U CN 201920399070 U CN201920399070 U CN 201920399070U CN 210071482 U CN210071482 U CN 210071482U
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- 238000009864 tensile test Methods 0.000 title claims abstract description 12
- 238000001514 detection method Methods 0.000 title claims description 7
- 238000012360 testing method Methods 0.000 claims abstract description 17
- 230000007704 transition Effects 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 241000282472 Canis lupus familiaris Species 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to a sample line ball ring detects centering device for uniaxial tensile test, including the base, set up the recess that is used for placing tensile sample on the base, set up the backing plate in the base upper end, set up fastening screw in the backing plate both sides, set up portable screw on the backing plate between two fastening screw, be connected with the expansion end of portable screw and with the centering plate that the recess corresponds, set up scale mark and semicircle ring line on the centering plate, portable screw runs through and stretches out the backing plate and is connected with the centering plate. The device can complete accurate centering of the tensile sample, and the accuracy of the test result and the high efficiency of the work are guaranteed. The problem of current positioner have wearing and tearing, the precision is low, to the influence of test result big is solved, have simple structure, convenient operation's characteristics.
Description
Technical Field
This patent application belongs to tensile test instrument technical field, and more specifically says, relates to a sample line ball ring detects centering device for uniaxial tensile test.
Background
At present, the centering of a sample in a tensile test is completed through positioning devices on two sides of an upper clamp and a lower clamp of a testing machine, but the positioning devices are abraded due to long-time use, so that the accurate centering cannot be guaranteed, and the accuracy of a test result is greatly influenced in a tensile test with strict centering requirements, such as a measurement test of a plastic strain ratio r value. Because the positioning device is worn and not easy to replace, the fact that whether the two end pressing lines of the tensile sample are centered or not can not be guaranteed if the positioning device is not relied on and only human eyes are relied on to judge whether the two end pressing lines of the tensile sample are centered is found in practical use.
The wire pressing centering at the two ends of the tensile sample cannot be ensured, so that the error of the test result is large, and therefore the existing positioning device has the defects of abrasion, low precision and large influence on the test result, and needs to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that needs to solve provides a sample line ball ring detects centering device for uniaxial tensile test, can solve that current positioner has wearing and tearing, precision low, to the big problem of test result influence.
In order to solve the above problem, the utility model discloses the technical scheme who adopts is:
the utility model provides a centering device is detected with sample line ball ring to unipolar tensile test, the on-line screen storage device comprises a base, the setting is used for placing tensile sample's recess on the base, the setting is at the backing plate of base upper end, the fastening screw of setting in the backing plate both sides, the portable screw of setting on the backing plate between two fastening screws, be connected with the expansion end of portable screw and with the centering plate that the recess corresponds, scale mark and semicircle ring line of setting on the centering plate, portable screw runs through and stretches out the backing plate and is connected with the centering plate.
The utility model discloses technical scheme's further improvement lies in: the base bottom that corresponds with fastening screw is equipped with two dogs, and the expansion end of portable screw is located between two dogs, and the length of the expansion end of portable screw is good at the vertical height of dog.
The utility model discloses technical scheme's further improvement lies in: the movable screw comprises a movable rod penetrating through the base plate, a screwing cap arranged at the head end of the movable rod, and a transition section which is arranged on the base plate and sleeved on the movable rod in a penetrating manner, wherein the transition section corresponds to the screwing cap, the tail end of the movable rod is connected with the centering plate, and the part of the movable rod, which is positioned below the base plate, is longer than the longitudinal height of the stop block.
The utility model discloses technical scheme's further improvement lies in: the transition section is a truncated cone, namely the transition section is a cone table.
The utility model discloses technical scheme's further improvement lies in: the block is a cube.
The utility model discloses technical scheme's further improvement lies in: the minimum scale of the scale lines is 0.5 mm.
Since the technical scheme is used, the utility model discloses the beneficial effect who gains is: the device can realize that the circle centers of the wire pressing rings at the two ends of the tensile sample are positioned on the longitudinal axis of the sample, can finish the accurate centering of the tensile sample, and ensures the accuracy of test results and the high efficiency of work. The problems that an existing positioning device is abraded, low in precision and large in influence on test results are solved. The utility model has the advantages of being simple in structure and convenient in operation, be current positioner's effective auxiliary article.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the enlarged partial structure of the present invention;
FIG. 3 is a schematic view of a sample placement location of the present invention;
wherein: 1. the device comprises a base, 2, a base plate, 3, a fastening screw, 4, a movable screw, 5, a stop block, 6, a centering plate, 7 and a tensile sample.
Detailed Description
The present invention will be described in further detail with reference to examples.
The utility model discloses a sample line ball ring detects centring means for uniaxial tensile test, see fig. 1-fig. 3, including base 1, the setting is used for placing tensile sample 7's recess on base 1, the setting is at backing plate 2 of base 1 upper end, the fastening screw 3 of setting in backing plate 2 both sides, the portable screw 4 of setting on backing plate 2 between two fastening screw 3, be connected with portable screw 4's expansion end and with the centering plate 6 that the recess corresponds, set up scale mark and the semicircle line on centering plate 6, portable screw 4 runs through and stretches out backing plate 2 and is connected with centering plate 6.
Two stop blocks 5 are arranged at the bottom end of the base 1 corresponding to the fastening screw 3, the movable end of the movable screw 4 is positioned between the two stop blocks 5, and the length of the movable end of the movable screw 4 is longer than the longitudinal height of the stop blocks 5.
The movable screw 4 comprises a movable rod penetrating through the base plate 2, a screwing cap arranged at the head end of the movable rod, and a transition section arranged on the base plate 2 and sleeved on the movable rod in a penetrating manner, the transition section corresponds to the screwing cap, the tail end of the movable rod is connected with the centering plate 6, and the part of the movable rod below the base plate 2 is longer than the longitudinal height of the stop block 5. The transition section is a truncated cone, namely a cone table. The stop 5 is cubic.
The working process is as follows:
the centering plate 6 is provided with scale marks, and the minimum scale of the scale marks is 0.5 mm. The clamping end of the tensile test firstly clamps a circular ring-shaped wire pressing ring on the testing machine in advance, a tensile sample 7 with the wire pressing ring is placed in a groove of the base 1, one side of the tensile sample is close to the inner side of the groove, the distance between the circle center of the wire pressing ring and the side face of the tensile sample is measured by pulling the centering plate 6 by screwing the movable screw 4, and whether the circle center of the wire pressing ring of the tensile sample is on the longitudinal axis of the tensile sample can be judged by measuring the distance between the two ends of the tensile sample, so that the centering condition is accurately judged. The centering plate 6 is provided with scale lines and semicircular ring lines, the circle center of the pressure wire ring can be easily judged through the scale lines and the semicircular ring lines, an accurate distance value is further measured, and then the centering precision can be ensured through adjusting the scale value of a positioning device on the testing machine.
Claims (6)
1. The utility model provides a uniaxial tensile test detects centering device with sample line ball ring which characterized in that: including base (1), the setting is used for placing the recess of tensile sample (7) on base (1), setting up backing plate (2) in base (1) upper end, set up fastening screw (3) in backing plate (2) both sides, portable screw (4) on backing plate (2) of setting between two fastening screw (3), centering plate (6) of being connected and corresponding with the recess with the expansion end of portable screw (4), scale mark and the semicircle line of setting on centering plate (6), portable screw (4) are run through and are stretched out backing plate (2) and are connected with centering plate (6), centering plate (6) correspond the cooperation with the tensile sample in the recess.
2. The sample wire pressing ring detection centering device for the uniaxial tension test as claimed in claim 1, wherein: two stop blocks (5) are arranged at the bottom end of the base (1) corresponding to the fastening screw (3), the movable end of the movable screw (4) is positioned between the two stop blocks (5), and the length of the movable end of the movable screw (4) is longer than the longitudinal height of the stop blocks (5).
3. The sample wire pressing ring detection centering device for the uniaxial tension test as claimed in claim 2, wherein: the movable screw (4) comprises a movable rod penetrating through the base plate (2), a screwing cap arranged at the head end of the movable rod, and a transition section which is arranged on the base plate (2) and sleeved on the movable rod in a penetrating manner, the transition section corresponds to the screwing cap, the tail end of the movable rod is connected with the centering plate (6), and the part of the movable rod, which is positioned below the base plate (2), is longer than the longitudinal height of the stop block (5).
4. The sample wire pressing ring detection centering device for the uniaxial tension test as claimed in claim 3, wherein: the transition section is a truncated cone.
5. The sample wire pressing ring detection centering device for the uniaxial tension test as claimed in claim 4, wherein: the stop block (5) is cubic.
6. The sample wire ring detection centering device for the uniaxial tension test according to any one of claims 1 to 5, wherein: the minimum scale of the scale lines is 0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920399070.7U CN210071482U (en) | 2019-03-27 | 2019-03-27 | Sample wire pressing ring detection centering device for uniaxial tensile test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920399070.7U CN210071482U (en) | 2019-03-27 | 2019-03-27 | Sample wire pressing ring detection centering device for uniaxial tensile test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210071482U true CN210071482U (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920399070.7U Expired - Fee Related CN210071482U (en) | 2019-03-27 | 2019-03-27 | Sample wire pressing ring detection centering device for uniaxial tensile test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210071482U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111982674A (en) * | 2020-07-23 | 2020-11-24 | 河海大学 | Height-adjustable soil body uniaxial stretching device with sliding rod |
-
2019
- 2019-03-27 CN CN201920399070.7U patent/CN210071482U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111982674A (en) * | 2020-07-23 | 2020-11-24 | 河海大学 | Height-adjustable soil body uniaxial stretching device with sliding rod |
| CN111982674B (en) * | 2020-07-23 | 2021-04-27 | 河海大学 | Height-adjustable soil body uniaxial stretching device with sliding rod |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200214 |
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| CF01 | Termination of patent right due to non-payment of annual fee |