CN211374316U - Special clamp for measuring mechanical property sample of metal sheet by indentation method - Google Patents
Special clamp for measuring mechanical property sample of metal sheet by indentation method Download PDFInfo
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- CN211374316U CN211374316U CN201921933794.1U CN201921933794U CN211374316U CN 211374316 U CN211374316 U CN 211374316U CN 201921933794 U CN201921933794 U CN 201921933794U CN 211374316 U CN211374316 U CN 211374316U
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- indentation method
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Abstract
The utility model discloses an indentation method survey sheet metal mechanical properties sample special fixture, this anchor clamps contain: an upper pressing block, a lower pressing block and a clamping bolt; the sample to be tested is clamped between the upper pressing block and the lower pressing block, and the sample to be tested is clamped by the upper pressing block and the lower pressing block through the clamping bolt; the middle part of the upper pressing block is provided with a through hole; the upper pressing block is also provided with an observation groove which is communicated with the through hole and extends towards the outer edge of the upper pressing block. The surface of the upper pressing block is provided with a protruding part surrounding the through hole, and the protruding part is in contact with a sample to be measured. The utility model discloses a twist and move the bolt and make and go up the briquetting and move down, go up the bulge of briquetting and contact the sample surface that awaits measuring first, expose and wait to measure the point. The utility model discloses a panel sample and non-ferromagnetic sample of unevenness can be fixed to special fixture, avoid the experiment to carry out the in-process, because the sample puts the error reduction that the shakiness and lead to the accuracy of experimental result has been improved.
Description
Technical Field
The utility model relates to a mechanical properties detects technical field, concretely relates to indentation method survey sheet metal material mechanical properties sample special fixture.
Background
The indentation method is widely used to study yield strength, tensile strength, work hardening index, elastic modulus, residual stress, and fracture toughness of materials. Therefore, the device realizes continuous monitoring of tensile property of in-service equipment materials and provides reliable guarantee for structural integrity evaluation of in-service equipment. The indentation method test process mainly adopts a displacement control or load control method, and the test force, the corresponding indentation depth and the time in the whole test process are recorded.
When an indentation detection instrument is used in a laboratory to test the mechanical property of a metal sheet, a specific clamp is not usually arranged on a magnetic sample table for fixing a sample, and a non-ferromagnetic material cannot be fixed on the sample table.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can prevent anchor clamps of sample skew to non-level panel sample and the easy gliding phenomenon of non-ferromagnetic sample when adopting indentation detecting instrument in laboratory now.
In order to achieve the above object, the utility model provides an indentation method survey sheet metal mechanical properties sample special fixture, this anchor clamps contain: an upper pressing block, a lower pressing block and a clamping bolt; the sample to be tested is clamped between the upper pressing block and the lower pressing block, and the sample to be tested is clamped by the upper pressing block and the lower pressing block through the clamping bolt; the middle part of the upper pressing block is provided with a through hole; the upper pressing block is also provided with an observation groove which is communicated with the through hole and extends towards the outer edge of the upper pressing block.
Preferably, the surface of the upper pressing block is provided with a protruding part surrounding the through hole, and the protruding part is in contact with a sample to be measured.
Preferably, the wall surface of the through hole is formed in an inverted truncated cone shape at a portion other than the protruding portion.
Preferably, the upper pressing block and the lower pressing block are both annular.
Preferably, the upper pressing block is 80-100 mm in diameter and 8-10 mm in thickness, and the two bottom surfaces of the circular truncated cone are respectively 30-35 mm in diameter and 20mm in diameter.
Preferably, the inner diameter phi of the protruding part is 30-40 mm, the outer diameter phi is 40-50 mm, and the height is 5-8 mm; the width of the observation groove is 10-15 mm.
Preferably, the lower pressing block phi is 100 mm-120 mm, and the thickness is 10-15 mm.
Preferably, the upper pressing block and the lower pressing block are both provided with screw holes, and the clamping bolt penetrates through the screw hole of the upper pressing block and is screwed into the screw hole of the lower pressing block.
Preferably, there are 4 clamping bolts in total.
Preferably, the sample to be detected is a metal plate with the thickness of 1-3 mm.
The utility model discloses it is to show the advantage:
the utility model discloses a twist and move the bolt and make and go up the briquetting and move down, go up the bulge of briquetting and contact the sample surface that awaits measuring first, expose the sample and wait to measure the point. The utility model discloses a panel sample and non-ferromagnetic sample of unevenness can be fixed to special fixture, avoid the experiment to carry out the in-process, because the sample puts the error reduction that the shakiness and lead to the accuracy of experimental result has been improved.
Drawings
Fig. 1 is a front view of the special fixture of the present invention.
Fig. 2 is a top view of the special fixture of the present invention.
FIG. 3 is a front view of the upper press block.
FIG. 4 is a top view of the upper press block.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.
In the following description, the symbol Φ represents a diameter.
As shown in fig. 1 to 4, the special fixture for measuring mechanical properties of sheet metal material by indentation method of the present invention comprises: an upper pressing block 2, a lower pressing block 3 and a clamping bolt 1. When the device is used, a sample 4 to be measured, namely a metal sheet to be measured, is clamped between the upper pressing block 2 and the lower pressing block 3, the upper pressing block 2 is adjusted to move towards the lower pressing block 3 by screwing the clamping bolt 1, and then the sample can be clamped.
The middle part of the upper pressing block 2 is provided with a through hole. During the use, will the utility model discloses a special fixture is put on indentation detecting instrument's sample bench, and indentation detecting instrument's pressure head presses on the sample 4 that awaits measuring through this through-hole, carries out mechanical properties's survey. The through-hole can be used to observe the sample 4 to be measured at the same time.
In order to better observe the sample 4 to be measured, the upper pressing block 2 is also provided with an observation groove 5 communicated with the through hole. The observation groove 5 is grooved from the through hole to the outer side of the upper pressing block 2, and the experimenter can observe the condition in the through hole of the upper pressing block 2 when standing far away. The observation groove 5 penetrates through the upper pressing block 2, namely the upper surface and the lower surface of the upper pressing block 2 at the observation groove 5 are communicated. In some embodiments, the observation groove 5 has a width of 10-15 mm.
The middle part of the upper pressing block 2 is provided with a circular protruding part 6 surrounding the through hole, and the protruding part 6 is in contact with the sample 4 to be measured. The bottom of the upper pressing block 2 is protruded, and the distance between the upper pressing block 2 and the lower pressing block 3 is increased, so that the whole body of the sample 4 to be detected can be observed conveniently. In some embodiments, the inner circle phi of the annular protruding part 6 is 30-40 mm, the outer circle phi is 40-50 mm, and the height is 5-8 mm.
In some embodiments, the inner wall surface of the through hole is formed in an inverted truncated cone shape at a portion other than the protruding portion 6. The inclined wall surface of the through hole is beneficial to observing the detection process. In some embodiments, two bottom surfaces of the circular truncated cone are respectively phi 30-35 mm and phi 20 mm.
In some embodiments, the upper pressing block 2 and the lower pressing block 3 are both ring-shaped.
In some embodiments, the upper pressing block 2 has a diameter of 80-100 mm and a thickness of 8-10 mm. The thickness of the upper compact 2 does not include the thickness of the bulge 6.
In some embodiments, the lower pressing block 3 has a diameter of 100mm to 120mm and a thickness of 10mm to 15 mm.
The upper pressing block 2 and the lower pressing block 3 are both provided with screw holes, and the clamping bolt 1 is a bolt M8 which penetrates through the upper pressing block 2 and is screwed into the screw hole of the lower pressing block 3, so that a sample 4 to be tested is clamped. The number of the clamping bolts 1 is 4. And on a virtual circle phi of 60-70 mm, screw holes are distributed at intervals of 90 degrees.
The hardness requirements of the materials of the upper pressing block 2 and the lower pressing block 3 are as follows: 50-55 HRC.
The utility model discloses an indentation method survey sheet metal mechanical properties sample special fixture is applicable to the sheet metal of 1 ~ 3mm thickness.
To sum up, the utility model discloses a twist and move clamping bolt and make and go up the briquetting and move down, go up the bulge of briquetting and contact the sample surface that awaits measuring at first, expose and wait to measure the point. The utility model discloses a panel sample and non-ferromagnetic sample of unevenness can be fixed to special fixture, avoid the experiment to carry out the in-process, because the sample puts the error reduction that the shakiness and lead to the accuracy of experimental result has been improved.
While the present invention has been described in detail with reference to the preferred embodiments thereof, it should be understood that the above description should not be taken as limiting the present invention. Numerous modifications and alterations to the present invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (10)
1. A special fixture for a sample for measuring mechanical properties of a metal sheet by an indentation method is characterized in that:
the clamp comprises: an upper pressing block, a lower pressing block and a clamping bolt;
the sample to be tested is clamped between the upper pressing block and the lower pressing block, and the sample to be tested is clamped by the upper pressing block and the lower pressing block through the clamping bolt;
the middle part of the upper pressing block is provided with a through hole;
the upper pressing block is also provided with an observation groove which is communicated with the through hole and extends towards the outer edge of the upper pressing block.
2. The special fixture for the sheet metal mechanical property sample measured by the indentation method as claimed in claim 1, wherein the surface of the upper pressing block is provided with a protrusion surrounding the through hole, and the protrusion is in contact with the sample to be measured.
3. The jig for a sample of mechanical properties of a thin metal plate according to claim 2, wherein the wall surface of the through hole is formed in an inverted truncated cone shape in a portion other than the protruding portion.
4. The special fixture for the sheet metal mechanical property sample measured by the indentation method as claimed in claim 3, wherein the upper pressing block and the lower pressing block are both ring-shaped.
5. The special fixture for the samples for measuring the mechanical properties of the sheet metal materials by the indentation method according to claim 4, wherein the upper pressing block is phi 80-100 mm, the thickness of the upper pressing block is 8-10 mm, and the two bottom surfaces of the circular truncated cone are respectively phi 30-35 mm and phi 20 mm.
6. The special fixture for the sheet metal mechanical property sample measured by the indentation method according to claim 5, wherein the inner diameter of the protrusion part is 30-40 mm, the outer diameter thereof is 40-50 mm, and the height thereof is 5-8 mm; the width of the observation groove is 10-15 mm.
7. The special fixture for the sheet metal mechanical property sample measured by the indentation method according to claim 4, wherein the lower pressing block is phi 100mm to 120mm, and the thickness is 10mm to 15 mm.
8. The special fixture for the sample of the mechanical property of the sheet metal material measured by the indentation method as claimed in claim 1, wherein the upper pressing block and the lower pressing block are provided with screw holes, and the clamping bolt passes through the screw hole of the upper pressing block and is screwed into the screw hole of the lower pressing block.
9. The special fixture for the sheet metal mechanical property sample measured by the indentation method as claimed in claim 1, wherein the number of the clamping bolts is 4.
10. The special fixture for the sample for measuring the mechanical property of the sheet metal material by the indentation method according to claim 1, wherein the sample to be measured is a sheet metal material with a thickness of 1-3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921933794.1U CN211374316U (en) | 2019-11-11 | 2019-11-11 | Special clamp for measuring mechanical property sample of metal sheet by indentation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921933794.1U CN211374316U (en) | 2019-11-11 | 2019-11-11 | Special clamp for measuring mechanical property sample of metal sheet by indentation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211374316U true CN211374316U (en) | 2020-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921933794.1U Active CN211374316U (en) | 2019-11-11 | 2019-11-11 | Special clamp for measuring mechanical property sample of metal sheet by indentation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211374316U (en) |
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2019
- 2019-11-11 CN CN201921933794.1U patent/CN211374316U/en active Active
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