CN213516616U - Fixing device for measuring elongation after fracture in metal material tensile experiment - Google Patents
Fixing device for measuring elongation after fracture in metal material tensile experiment Download PDFInfo
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- CN213516616U CN213516616U CN202022718955.4U CN202022718955U CN213516616U CN 213516616 U CN213516616 U CN 213516616U CN 202022718955 U CN202022718955 U CN 202022718955U CN 213516616 U CN213516616 U CN 213516616U
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- detection block
- shaped groove
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Abstract
The utility model belongs to the field of standard sample fixing devices, and relates to a fixing device for measuring the elongation after fracture of a metal material tensile test, which is arranged on a test board and comprises a cuboid detection block, wherein the cuboid detection block is arranged on the test board, V-shaped grooves are formed in the periphery of the cuboid detection block along the axial direction, one end of the cuboid detection block is provided with a first pressing seat, the bottom of the first pressing seat is fixed on the test board, the top of the first pressing seat is provided with a first pressing bolt, and the first pressing bolt is arranged above the V-shaped groove; the other end of the cuboid detection block is provided with a second pressing seat, the bottom of the second pressing seat is fixed on the test board, the upper part of the second pressing seat is provided with a second pressing bolt, and the second pressing bolt is aligned to one side of the V-shaped groove; a plurality of thickness compensation blocks are arranged in the V-shaped groove. The utility model discloses be favorable to the measurement of the disconnected back gauge length of trade sample, make the test of elongation more accurate, application scope is wide, practices thrift the cost.
Description
Technical Field
The utility model relates to a tensile experiment of metal material elongation after rupture survey fixing device belongs to trade sample fixing device field.
Background
The elongation test after the breakage of the metal material standard sample tensile test is a common method for analyzing the mechanical property of the metal material, and the cylindrical standard sample is easy to roll when the elongation test after the breakage is carried out, so that a measurer cannot measure the gauge length after the breakage by using a measuring tool, and the elongation after the breakage of the standard sample tensile can not be calculated by using a formula; in the prior art, a single-size common V-shaped groove is used for fixing a cylindrical standard sample to test the elongation after fracture of a tensile experiment; the single-size V type groove is narrow to the diameter size applicability scope of standard sample, and ordinary V type groove is mainly applicable to the constant diameter standard sample, and the tensile standard sample that the experiment was used generally is thick in both ends, thin dumbbell shape in the middle, and the standard sample is put into V type inslot, and the broken interface of standard sample sinks, makes two sections standard sample interface positions not on same axis, influences the measurement of the gauge length of standard sample after breaking, can not accurately calculate the elongation of standard sample after tensile breaking.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the fixing device for measuring the elongation after fracture of the metal material tensile experiment is provided, so that a standard tensile standard sample is placed in a V-shaped groove, the fracture interface of the standard sample is not collapsed, the interfaces of two sections of the standard samples are positioned on the same axis, the measurement of the gauge length after the standard sample is fractured is facilitated, and the measurement of the elongation is more accurate; the test of elongation after fracture of the standard sample tensile test with different diameters can be realized at the same test bench, the application range is wide, and the cost is saved.
The fixing device for measuring the elongation after fracture of the metal material tensile experiment is arranged on the test board and comprises a cuboid detection block, wherein the cuboid detection block is arranged on the test board, and the peripheral side surfaces of the cuboid detection block are respectively provided with a V-shaped groove along the axial direction; one end of the cuboid detection block is provided with a first compression seat, the bottom of the first compression seat is fixed on the test board, the top of the first compression seat is provided with a first compression bolt, and the first compression bolt is arranged above the V-shaped groove; the other end of the cuboid detection block is provided with a second pressing seat, the bottom of the second pressing seat is fixed on the test board, the upper part of the second pressing seat is provided with a second pressing bolt, and the second pressing bolt is aligned with an opening at one end of the V-shaped groove; a plurality of thickness compensation blocks are arranged in the V-shaped groove.
Because the standard tensile sample used in the experiment is generally in a dumbbell shape with thick two ends and thin middle, the height of the thickness compensation block is consistent with the diameter difference value between the two ends of the sample and the middle position, and the vertical two sides of the V-shaped groove can limit the position of the thickness compensation block at the bottommost layer, thereby ensuring that the sample is placed in the V-shaped groove without collapse of a sample fracture interface, and the sample interface is positioned on the same axis, being beneficial to measuring the gauge length of the sample after fracture by a measuring tool by a measurer, and ensuring that the test of the elongation is more accurate; the first compression bolt can move up and down through the first compression seat, so that standard samples with different diameters can be compressed; the compression bolt passes through the compression seat II and can move back and forth, so that standard samples with different lengths can be compressed, and the application range is wide; the size of V type groove size that every side of cuboid detection piece was equipped with is different, sets up the different V type groove of size and can be suitable for the trade sample of different diameter sizes, and the trade sample diameter is big can select V type groove size big, and the trade sample diameter is little can select V type groove size little, realizes opening the V type groove of different sizes on a testboard, satisfies the measurement calculation of the broken back elongation of different size trade sample tensile test. If only one V-shaped groove is arranged on the cuboid detection block, a standard sample with a thick diameter is placed in the V-shaped groove, so that the standard sample protrudes out of the V-shaped groove to be high, and the standard sample is not fixed stably; the standard sample with a very small diameter is placed in the V-shaped groove, so that the position of the standard sample placed in the V-shaped groove is too deep, and the gauge length of the broken standard sample is difficult to measure. Dividing the standard sample into a first standard sample section and a second standard sample section after the standard sample is broken; during the specific working process, a section of a standard sample is placed in a V-shaped groove on a cuboid detection block, a thickness compensation block is placed at the lower part of a fracture interface of the section of the standard sample, and a compression bolt is screwed downwards to compress the upper part of the section of the standard sample; then placing the second section of the standard sample into a V-shaped groove, butting the first section of the standard sample and the second section of the standard sample according to the appearance of a fracture interface, and screwing a compression bolt in the direction towards the second section of the standard sample to compress the end face of the second section of the standard sample; and measuring the gauge length of the broken standard sample by a measuring tool by a measurer, and calculating the elongation of the broken standard sample by using a calculation formula.
Preferably, the second pressing seat is provided with a plurality of height adjusting threaded holes, and the second pressing bolt is in threaded connection with the height adjusting threaded holes. The height of the second compression bolt can be adjusted through the height adjusting threaded holes, and standard samples with different diameters are guaranteed to be compressed.
Preferably, the cross section of the V-shaped groove is isosceles triangle. The standard sample is placed behind the V-shaped groove, has the same height with the contact position of the V-shaped groove, is not easy to roll, and is favorable for measuring and calculating the elongation of the standard sample after being broken.
Preferably, the test bench top be equipped with the stopper, the stopper is the L type, the stopper two right-angle sides and cuboid detect piece terminal surface and side contact. When different V-arrangement grooves are selected as the standard sample, after the cuboid detection block is rotated, the position of the cuboid detection block can be limited by the limiting block.
Preferably, V type groove middle part top be equipped with the briquetting, briquetting one end and cuboid detection piece pass through thread fixed connection, and the cuboid detection piece V type groove one side all around all is equipped with briquetting installation screw hole. After the first section of the standard sample and the second section of the standard sample are butted, the pressing block can tightly press the middle part of the standard sample, and the phenomenon that the joint of the standard sample is upwarped and even flies out to cause inaccurate measuring results is avoided; briquetting one end and cuboid detect the piece and pass through thread fixed connection, are favorable to the briquetting to be dismantled, detect the piece when rotatory cuboid and change the V type groove that the trade mark used after, briquetting fixed mounting is convenient again.
Compared with the prior art, the utility model, following beneficial effect has:
the utility model has simple and reasonable structural design, utilizes the thickness compensation block to supplement the height difference between the diameter of the middle position of the standard sample and the diameter of the two end positions, avoids the fracture interface collapse of the standard sample, ensures that the interface positions of the two sections of standard samples are on the same axis, is favorable for measuring the gauge length after the standard sample is broken, and ensures that the test of the elongation is more accurate; the cuboid detection block is provided with a plurality of V-shaped grooves, so that the measurement and calculation of the elongation after fracture of different-size standard sample tensile tests on one test board are met, the application range is wide, and the cost is saved.
Drawings
FIG. 1 is a schematic structural view of a fixing device for measuring elongation after fracture in a metal material tensile test;
FIG. 2 is a cross-sectional view of a fixing device for measuring elongation after fracture in a tensile test of a metal material;
fig. 3 and 2 are schematic sectional views a-a showing a partial enlargement.
In the figure: 1. a first pressing seat; 2. a first compression bolt; 3. a cuboid detection block; 4. carrying out standard sample; 5. a V-shaped groove; 6. a second pressing seat; 7. a second compression bolt; 8. a test bench; 9. a thickness compensation block; 10. one section of a standard sample; 11. a second section of a standard sample; 12. a limiting block; 13. briquetting; 14. a press block is provided with a threaded hole; 15. the height adjustment screw hole.
Detailed Description
The invention will be further described with reference to the accompanying drawings:
as shown in fig. 1-3, the fixing device for measuring elongation after fracture in a metal material tensile test of the present invention is disposed on the test table 8; the test device comprises a cuboid detection block 3, wherein the cuboid detection block 3 is arranged on a test board 8, and V-shaped grooves 5 are respectively arranged on the peripheral side surfaces of the cuboid detection block 3 along the axial direction; one end of the cuboid detection block 3 is provided with a first compression seat 1, the bottom of the first compression seat 1 is fixed on the test board 8, the top of the first compression seat 1 is provided with a first compression bolt 2, and the first compression bolt 2 is arranged above the V-shaped groove 5; a second compression seat 6 is arranged at the other end of the cuboid detection block 3, the bottom of the second compression seat 6 is fixed on the test board 8, a second compression bolt 7 is arranged at the upper part of the second compression seat 6, and the second compression bolt 7 is aligned with an opening at one end of the V-shaped groove 5; a plurality of thickness compensation blocks 9 are arranged in the V-shaped groove 5.
In this embodiment:
the second compression seat 6 is provided with a plurality of height adjusting threaded holes 15, and the second compression bolt 7 is in threaded connection with the height adjusting threaded holes 15. The height of the second compression bolt 7 can be adjusted through the height adjusting threaded hole 15, and the standard samples 4 with different diameters can be guaranteed to be compressed.
The cross section of the V-shaped groove 5 is isosceles triangle. The contact position of the standard sample 4 placed in the V-shaped groove 5 is the same as the contact position of the V-shaped groove 5, so that the standard sample is not easy to roll, and the measurement and calculation of the elongation of the standard sample 4 after fracture are facilitated.
A limiting block 12 is arranged above the test board 8, the limiting block 12 is L-shaped, and two right-angle sides of the limiting block 12 are in contact with the end face and the side face of the cuboid detection block 3. When different V-arrangement grooves 5 are selected as the standard sample, after the cuboid detection block 3 is rotated, the limiting block 12 can limit the position of the cuboid detection block 3.
In the specific working process, firstly, the V-shaped groove 5 on the cuboid detection block 3 is selected according to the diameter of the standard sample 4, and one side of the cuboid detection block 3, which is provided with the V-shaped groove 5 meeting the conditions, is placed upwards; then selecting a thickness compensation block 9 meeting the height according to the diameter difference between the two ends and the middle position of the standard sample 4; placing a section 10 of the standard sample into a V-shaped groove 5 on a cuboid detection block 3, placing a thickness compensation block 9 at the lower part of a fracture interface of the section 10 of the standard sample, and screwing a first compression bolt 2 downwards to compress the upper part of the section 10 of the standard sample; then, placing the second section of the standard sample 11 into the V-shaped groove 5, butting the first section of the standard sample 10 and the second section of the standard sample 11 on the thickness compensation block 9 according to the appearance of a fracture interface, and screwing a second compression bolt 7 towards the direction of the standard sample 4 to compress the end face of the second section of the standard sample 11; and measuring the gauge length of the broken standard sample 4 by a measuring tool by a measurer, and calculating the elongation of the broken standard sample 4 by using a calculation formula. The cuboid detects 5 size differences in V type groove that 3 every sides of piece are equipped with, sets up the different V type groove of size 5 and can be suitable for the trade sample 4 of different diameter sizes, and the trade sample 4 diameter is big can select V type groove 5 size big, and the trade sample 4 diameter is little can select V type groove 5 size little, realizes opening the V type groove 5 of different sizes on a testboard 8, satisfies the measurement calculation of the elongation after the not unidimensional trade sample 4 tensile test breaks. If the cuboid detection block 3 is provided with only one V-shaped groove 5, the standard sample 4 with a very thick diameter is placed in the V-shaped groove 5, so that the standard sample protrudes out of the V-shaped groove 5 to be very high, and the standard sample 4 is unstable to fix; the standard sample 4 with a very thin diameter is placed in the V-shaped groove 5, so that the position of the standard sample 4 placed in the V-shaped groove 5 is too deep, and the gauge length of the broken standard sample 4 is not easy to measure. The standard tensile sample 4 used in the experiment is generally in a dumbbell shape with thick two ends and thin middle part; the standard sample 4 is divided into a first standard sample section 10 and a second standard sample section 11 after being broken.
Claims (5)
1. The utility model provides a tensile experiment of metal material elongation after rupture survey fixing device, sets up on testboard (8), its characterized in that: the test device comprises a cuboid detection block (3), wherein the cuboid detection block (3) is arranged on a test board (8), and the peripheral side surfaces of the cuboid detection block (3) are respectively provided with a V-shaped groove (5) along the axial direction; one end of the cuboid detection block (3) is provided with a first compression seat (1), the bottom of the first compression seat (1) is fixed on the test board (8), the top of the first compression seat (1) is provided with a first compression bolt (2), and the first compression bolt (2) is arranged above the V-shaped groove (5); a second compression seat (6) is arranged at the other end of the cuboid detection block (3), the bottom of the second compression seat (6) is fixed on the test board (8), a second compression bolt (7) is arranged at the upper part of the second compression seat (6), and the second compression bolt (7) is aligned with an opening at one end of the V-shaped groove (5); a plurality of thickness compensation blocks (9) are arranged in the V-shaped groove (5).
2. The fixture for measuring elongation after fracture in tensile test of metallic material according to claim 1, wherein: the second compression seat (6) is provided with a plurality of height adjusting threaded holes (15), and the second compression bolt (7) is in threaded connection with the height adjusting threaded holes (15).
3. The fixture for measuring elongation after fracture in tensile test of metallic material according to claim 1, wherein: the cross section of the V-shaped groove (5) is isosceles triangle.
4. The fixture for measuring elongation after fracture in tensile test of metallic material according to claim 1, wherein: a limiting block (12) is arranged above the test board (8), the limiting block (12) is L-shaped, and two right-angle sides of the limiting block (12) are in contact with the end face and the side face of the cuboid detection block (3).
5. The fixture for measuring elongation after fracture in tensile test of metallic material according to claim 1, wherein: v type groove (5) middle part top is equipped with briquetting (13), and briquetting (13) one end is detected piece (3) with the cuboid and is passed through screw thread fixed connection, and the cuboid detects piece (3) V type groove (5) one side all around and all is equipped with briquetting installation screw hole (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022718955.4U CN213516616U (en) | 2020-11-20 | 2020-11-20 | Fixing device for measuring elongation after fracture in metal material tensile experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022718955.4U CN213516616U (en) | 2020-11-20 | 2020-11-20 | Fixing device for measuring elongation after fracture in metal material tensile experiment |
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| Publication Number | Publication Date |
|---|---|
| CN213516616U true CN213516616U (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022718955.4U Expired - Fee Related CN213516616U (en) | 2020-11-20 | 2020-11-20 | Fixing device for measuring elongation after fracture in metal material tensile experiment |
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| CN (1) | CN213516616U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114739256A (en) * | 2022-04-20 | 2022-07-12 | 中北大学 | Scribing and measuring method for cylindrical sample tensile experiment |
-
2020
- 2020-11-20 CN CN202022718955.4U patent/CN213516616U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114739256A (en) * | 2022-04-20 | 2022-07-12 | 中北大学 | Scribing and measuring method for cylindrical sample tensile experiment |
| CN114739256B (en) * | 2022-04-20 | 2023-07-21 | 中北大学 | Scribing and measuring method for cylindrical sample tensile experiment |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210622 Termination date: 20211120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |