CN214251819U - Device for measuring elongation of plate-shaped tensile sample - Google Patents
Device for measuring elongation of plate-shaped tensile sample Download PDFInfo
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- CN214251819U CN214251819U CN202023134274.XU CN202023134274U CN214251819U CN 214251819 U CN214251819 U CN 214251819U CN 202023134274 U CN202023134274 U CN 202023134274U CN 214251819 U CN214251819 U CN 214251819U
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Abstract
The utility model discloses a measure device of slabby tensile sample percentage of elongation, the device include a work bench, two screw up screw rods, two springs and the sample baffle that the activity set up on the work bench, it can effectively fix the tensile sample before the fracture and after the fracture, only need a measurement personnel just can accomplish the gauge length after the tensile sample fracture fast and measure and the calculation task of percentage of elongation, and measuring precision is higher relatively moreover.
Description
Technical Field
The utility model belongs to the technical field of machinery, concretely relates to measure device of platelike tensile sample percentage of elongation.
Background
At present, a steel part is often required to be subjected to a tensile test in the production process of a steel enterprise as an important index for describing the plastic property of a material, the elongation rate needs to be calculated after the tensile test, the elongation rate usually needs to be matched with two detection personnel to complete a gauge length measurement task after a tensile sample is broken, and the fracture can be completely inosculated difficultly by manual butt joint, so that the elongation rate measuring speed is relatively low, and the measurement precision is relatively low.
Document CN101915701A discloses a device and method for measuring elongation of stainless steel on line, the patent device of the document mainly comprises two vertical benchmarks, a cross bar and two punches mounted on the vertical benchmarks, and is designed based on the principle of on-line measurement, tension is established on a steel plate, two punches are used for striking two points on the surface of a horizontal steel plate, and the distance between the striking points is measured; the distance between the striking points is measured again above the surface of the steel sheet after stretching, and therefore, the device of this document can measure only the elongation before the steel sheet breaks, but cannot measure the elongation after the steel sheet breaks.
Document CN104475461A discloses a composite measurement method for on-line strip steel elongation, the device of the document mainly consists of a length measuring roller and a laser velocimeter, and is also designed based on the on-line measurement principle, tension is established on the strip steel, the elongations under two measurement modes are respectively calculated, dynamic weights of the elongations under the two measurement modes are respectively calculated by using an error screening strategy, and the composite elongation is obtained through exponential smoothing processing and weighted average value operation, so the device of the document cannot measure the elongation after the strip steel is broken.
Document CN207533680U discloses an elongation rate measuring device, which mainly comprises a measuring roll, a driving mechanism, a first mounting beam, a second mounting beam, a swing frame, a first connecting seat, a second connecting seat, a support plate, an air cylinder, a piston rod, a hollow shaft and a speed measuring unit, wherein the measuring roll is rolled on the surface of a strip steel and can rotate along with the movement of the strip steel, the speed measuring unit is used for calculating the rotating speed of the measuring roll, the device is also designed based on an online measuring principle, tension is established on the strip steel, and therefore, the device of the document cannot measure the elongation rate after the strip steel is broken.
SUMMERY OF THE UTILITY MODEL
To problem one or more that exist among the prior art, the utility model provides a measure device of platelike tensile sample elongation, it includes: the device comprises a working table frame (2), two tightening screw rods (1), two springs (101) and a sample baffle (4); wherein:
the workbench frame (2) is of a cuboid structure; the upper surface of the working table frame (2) is provided with a rectangular through groove (201) for placing a tensile sample; one side of the through groove (201) is fixed, and the other side is a movably arranged sample baffle (4);
the sample baffle (4) comprises two vertically connected plate bodies: the test board comprises a first board body (403) and a second board body (404), wherein the first board body (403) is arranged on the other side of the through groove (201), the second board body (404) is provided with two cylindrical round holes (402), two screw holes (202) are formed in the position, corresponding to the round holes (402), of the workbench frame (2), the sample baffle (4) penetrates through the two round holes (402) through the two tightening screws (1) and is screwed into the two screw holes (202) to be detachably connected with the workbench frame (2), and the second board body (404) is further provided with a handle (401);
the tightening screw (1) is of a screw-rod-shaped symmetrical structure and consists of a rod head (103) and a rod body (102) which are coaxially connected; the rod head (103) is of a cylindrical structure and is used for positioning the sample baffle (4); the rod body (102) is a cylindrical structure with threads on the outer surface, can be screwed in the screw hole (202), and is used for adjusting the position of the sample baffle (4);
the spring (101) is sleeved on the rod body (102) and is positioned between the rod head (103) and the second plate body (404).
The device for measuring the elongation of the platy tensile sample comprises a working rack, two screwing screws, two springs and a sample baffle movably arranged on the working rack, the tensile sample before and after fracture can be effectively fixed, the calculation tasks of gauge length measurement and elongation after fracture of the tensile sample can be quickly completed by only one detector, and the measurement precision is relatively high.
Compared with the prior art, the utility model discloses following beneficial effect has:
the device consists of a working rack and an adjustable sample baffle, has simple structure, common materials and easy processing, and therefore, the manufacturing cost of the device is relatively low;
the adjustable sample baffle can be used for rapidly clamping and positioning two butted samples after the tensile test is broken, and the measurement of the gauge length and the calculation of the elongation can be completed by only one detector, so that the device has relatively high measurement speed;
the adjustable sample baffle can clamp and position two fractured butted samples, so that the gauge length of the fractured tensile sample can be accurately measured, and the measurement precision of the device is relatively high;
to sum up, through the utility model discloses the device can realize having low in manufacturing cost, measuring speed is fast, characteristics that measurement accuracy is high to the purpose of tensile sample measurement elongation.
Drawings
FIG. 1 is a schematic top view of an apparatus for measuring elongation of a sheet-like tensile specimen before the tensile specimen breaks;
FIG. 2 is a schematic front view of an apparatus for measuring elongation of a sheet-like tensile specimen after the tensile specimen is broken;
FIG. 3 is a schematic left view of the apparatus for measuring elongation of a sheet-like tensile specimen after the tensile specimen is broken;
FIG. 4 is a schematic view of a sample baffle of an apparatus for measuring elongation of a plate-like tensile sample;
FIG. 5 is a schematic left side view of a tightening screw of the apparatus for measuring elongation of a plate-like tensile specimen;
FIG. 6 is a left side view schematically showing the construction of a stage of the apparatus for measuring elongation of a plate-like tensile specimen;
FIG. 7 is a schematic top view of an apparatus for measuring elongation of a sheet-like tensile specimen after the tensile specimen is broken;
FIG. 8 is a schematic top view of a tensile specimen prior to breaking;
FIG. 9 is a schematic top view of a tensile specimen after breaking;
description of reference numerals: 1-screwing the screw rod; 101-a spring; 102-a rod body; 103-a head; 2-a working bench; 201-a through slot; 202-screw holes; 3-tensile specimen before breaking; 301-starting gauge point before fracture A0(ii) a 302-end gauge Point before Break B0(ii) a 4-sample baffle; 401-handle; 402-a circular hole; 403-a first plate body; 404-a second plate; 5-tensile test specimens after breaking; 501-starting gauge Point A after fracture1(ii) a 502-end gauge Point B after Break1；L0-gauge length before fracture; l isu-gauge length after fracture.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The utility model provides a measure device of slabby tensile sample percentage of elongation, screw up screw rod 1, two springs 101 and sample baffle 4 including a workstation frame 2, two, each part all adopts the metal material preparation.
As shown in fig. 1, 3 and 6, the worktable 2 is a rectangular parallelepiped structure, and the upper surface thereof is provided with a rectangular parallelepiped through groove 201 for receiving tensile specimens (including a tensile specimen 3 before fracture and a tensile specimen 5 after fracture); one side of the through groove 201 is fixed, and the other side is a movably arranged sample baffle 4.
As shown in fig. 1 to 4, the sample block 4 includes two plate bodies connected vertically: a first plate 403 and a second plate 404, wherein the first plate 403 is arranged at the other side of the through groove 201, and the end part of the first plate is abutted against the tensile sample in use; two cylindrical round holes 402 are formed in the second plate body 404, two screw holes 202 are formed in the position, corresponding to the round holes 402, of the working table frame 2, and the sample baffle 4 is inserted into the two round holes 402 through the two tightening screws 1 and screwed into the two screw holes 202 to be detachably connected with the working table frame 2; a handle 401 is further disposed on the second plate 404.
As shown in fig. 5, the tightening screw 1 is a screw-shaped symmetrical structure, and is composed of a rod head 103 and a rod body 102 which are coaxially connected; the rod head 103 is of a cylindrical structure and is used for positioning the sample baffle 4; the rod body 102 is a cylindrical structure with a thread on the outer surface, and can be screwed in the screw hole 202 for adjusting the position of the sample baffle 4.
As shown in fig. 3 and 5, the spring 101 is sleeved on the rod 102 and is disposed between the rod head 103 and the second plate 404. This spring 101 is used for supporting sample baffle 4 and gives 4 resilience forces of sample baffle when withdrawing 4 tensile forces of sample baffle, guarantees to lay tensile sample back on the work bench 2, and sample baffle 4 passes through the tensile sample of spring 101's elasticity chucking.
The utility model provides a measure the equipment method of device of platelike tensile sample percentage of elongation:
as shown in fig. 1 to 7, the diameter of the two round holes of the sample baffle 4 may be 8mm, the diameter of the rod body 102 of the tightening screw 1 may be 6mm, the diameter of the rod head 103 may be 12mm, and the diameter of the spring 101 may be 10mm, the workbench 2 is first placed on a plane, the opening of the through slot 201 of the workbench 2 is ensured to be arranged upward, then the two tightening screws 1 are sleeved on the spring 101, the front end of the rod body 102 passes through the round holes 402 of the sample baffle 4 and is screwed into the two screw holes 202 of the workbench 2, the screwing depth of the rod body 102 of each tightening screw 1 is ensured to be the same, and the spring 101 is ensured to lightly press against the second plate body 404 of the sample baffle 4. Sample baffle 4 can slide along fixing two screw rods 1 of screwing up on the work bench 2, pull the handle 401 of sample baffle 4 outwards, the second plate body 404 of sample baffle 4 can compress spring 101, logical groove 201 above the work bench 2 widens simultaneously, make tensile sample put into logical groove 201 easily, release the handle 401 of sample baffle 4, spring 101 promotes second plate body 404 and first plate body 403 of sample baffle 4, with the tensile sample chucking in logical groove 201, so, the equipment of measuring the tensile sample percentage of elongation of platelike is assembled, can come into operation.
The utility model provides a measure platelike tensile sample percentage of elongation's device's application method:
as shown in fig. 1, firstly, the tensile sample 3 before fracture is placed in the through groove 201 of the workbench 2, the plane marked with the starting gauge point 301 before fracture and the ending gauge point 302 before fracture is ensured to be arranged upwards, or the tensile sample 3 before fracture is arranged upwards through the dotting machine, then the pull handle 401 of the sample baffle 4 is pulled by hand, the tensile sample 3 before fracture is placed in the through groove 201 in a flat and stable manner, the pull handle 401 is released, the spring 101 pushes the second plate 404 and the first plate 403 of the sample baffle 4, so that the tensile sample 3 before fracture can be clamped and positioned, and then the gauge length L between the starting gauge point 301 before fracture and the ending gauge point 302 before fracture of the tensile sample 3 before fracture is measured by a vernier caliper0As shown in fig. 8.
Then, the pull handle 401 of the specimen apron 4 is pulled, so that the tensile specimen 3 before breaking can be taken out from the through groove 202 of the workbench 2, and then the tensile specimen 3 before breaking is installed on a tensile testing machine, and is stretched according to the operation rules until the tensile specimen 3 before breaking breaks.
Then, the fractures of the two tensile samples 5 after fracture are butted, the two butted tensile samples 5 after fracture are simultaneously placed in the through groove 201 of the workbench 2, the planes marked with the starting gauge length point 501 after fracture and the ending gauge length point 502 after fracture are arranged upwards, or the dotting surface of the broken tensile sample 5 faces upwards through the dotting machine, then the handle 401 of the sample baffle 4 is pulled by hand, the broken tensile sample 5 is flatly placed in the through groove 201 in an aligned mode, the handle 401 is released, the spring 101 pushes the sample baffle 4, and therefore the broken tensile sample 5 can be clamped and positioned, the gauge length L between the start gauge length point 501 after fracture and the end gauge length point 502 after fracture of the two tensile test pieces 5 after fracture after butt joint was then measured with a vernier caliper.uAs shown in fig. 9.
Then will beL0And LuThe measured value of (a) is substituted into a calculation formula of elongation (L)u-L0)÷L0×100％。
Finally, can see, the utility model provides a measure device of platelike tensile sample percentage of elongation has low in manufacturing cost, measuring speed is fast, characteristics that measurement accuracy is high.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. An apparatus for measuring elongation of a plate-like tensile specimen, comprising: the device comprises a working table frame (2), two tightening screw rods (1), two springs (101) and a sample baffle (4); wherein:
the workbench frame (2) is of a cuboid structure; the upper surface of the working table frame (2) is provided with a rectangular through groove (201) for placing a tensile sample; one side of the through groove (201) is fixed, and the other side is a movably arranged sample baffle (4);
the sample baffle (4) comprises two vertically connected plate bodies: the test board comprises a first board body (403) and a second board body (404), wherein the first board body (403) is arranged on the other side of the through groove (201), the second board body (404) is provided with two cylindrical round holes (402), two screw holes (202) are formed in the position, corresponding to the round holes (402), of the workbench frame (2), the sample baffle (4) penetrates through the two round holes (402) through the two tightening screws (1) and is screwed into the two screw holes (202) to be detachably connected with the workbench frame (2), and the second board body (404) is further provided with a handle (401);
the tightening screw (1) is of a screw-rod-shaped symmetrical structure and consists of a rod head (103) and a rod body (102) which are coaxially connected; the rod head (103) is of a cylindrical structure and is used for positioning the sample baffle (4); the rod body (102) is a cylindrical structure with threads on the outer surface, can be screwed in the screw hole (202), and is used for adjusting the position of the sample baffle (4);
the spring (101) is sleeved on the rod body (102) and is positioned between the rod head (103) and the second plate body (404).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023134274.XU CN214251819U (en) | 2020-12-23 | 2020-12-23 | Device for measuring elongation of plate-shaped tensile sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023134274.XU CN214251819U (en) | 2020-12-23 | 2020-12-23 | Device for measuring elongation of plate-shaped tensile sample |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214251819U true CN214251819U (en) | 2021-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023134274.XU Active CN214251819U (en) | 2020-12-23 | 2020-12-23 | Device for measuring elongation of plate-shaped tensile sample |
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| Country | Link |
|---|---|
| CN (1) | CN214251819U (en) |
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- 2020-12-23 CN CN202023134274.XU patent/CN214251819U/en active Active
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