CN219977967U - Clamp tool for metal mechanical property testing machine - Google Patents
Clamp tool for metal mechanical property testing machine Download PDFInfo
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- CN219977967U CN219977967U CN202321333109.8U CN202321333109U CN219977967U CN 219977967 U CN219977967 U CN 219977967U CN 202321333109 U CN202321333109 U CN 202321333109U CN 219977967 U CN219977967 U CN 219977967U
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- mechanical property
- clamping
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- 238000012360 testing method Methods 0.000 title claims abstract description 42
- 239000002184 metal Substances 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model relates to the field of metal performance detection, in particular to a clamp tool of a metal mechanical performance testing machine, which comprises a first clamping block and a second clamping block which are symmetrically arranged, wherein a columnar groove is formed in the opposite position of the first clamping block and the second clamping block, the columnar groove comprises a cylindrical part and a shrinkage neck part, the diameter of the cylindrical part is larger than that of the shrinkage neck part, one end of the shrinkage neck part is connected with one end of the cylindrical part, the central axes of the cylindrical part and the shrinkage neck part are positioned in the same straight line, openings are respectively positioned at two ends of the clamping block, and the shape of the contact surface of the shrinkage neck part and the cylindrical part is matched with the shape of a sample assembling part; when the sample is clamped, the sample is placed in a placing groove formed by columnar grooves of the first clamping block and the second clamping block, and the shrinkage part at one end of the columnar groove and the contact between the shrinkage part and the columnar part are used for clamping and fixing the sample; the scheme has the beneficial effects of simple structure and stable clamping.
Description
Technical Field
The utility model relates to the field of metal performance detection, in particular to a fixture tool of a metal mechanical property testing machine.
Background
In the new material research and development, the design and manufacturing process of metal products, the mechanical property is an important performance index, and is an indispensable test item in the product performance test, and various mechanical properties of the metal materials can be measured through the mechanical property test. The tensile test is the most commonly used test method in mechanical property test, and the indexes such as strength, toughness and the like of the metal material are measured by stretching the metal on a tensile tester by adopting static tension and generally stretching the metal until the metal breaks. At present, most of clamping surfaces of a testing machine are plane, after equipment is used for a period of time, samples are easy to slip during testing along with abrasion of the clamping surfaces, so that the samples fall off in the testing process, and the testing result is inaccurate.
Disclosure of Invention
The utility model aims to provide a fixture tool of a metal mechanical property testing machine, so as to improve the clamping stability of the metal mechanical property testing machine.
In order to achieve the above purpose, the utility model adopts the following technical scheme: including the first grip block and the second grip block that the symmetry set up, first grip block with the second grip block corresponds the position in opposite directions and has seted up the column groove, the column groove includes cylinder portion and neck, cylinder portion with the central axis that contracts the neck is located same straight line and opening are located the both ends of place grip block respectively, neck portion with cylinder portion contact surface and sample assembly part shape phase-match.
The principle and the advantages of the scheme are as follows: when a metal sample is clamped, the first clamping block and the second clamping block are symmetrically placed on two sides of one end of the sample, a placing groove matched with the shape of the sample is formed by the columnar grooves of the first clamping block and the second clamping block, the sample is placed in the placing groove formed by the columnar grooves of the first clamping block and the second clamping block, and the shrinkage part at one end of the columnar groove and the contact between the shrinkage part and the cylindrical part are clamped and fixed on the sample; in this scheme, place the sample through setting up the column groove on the grip block, and constitute by neck and cylinder portion in the column groove, make the part that the column groove was fixed be the pitch arc shrink, when guaranteeing that anchor clamps can be stable with the sample when testing, make the grip block behind the one end time of use, the column groove on the grip block still can carry out stable centre gripping and fixed to the sample, cylinder portion can also avoid the sample to rock in the test process simultaneously, stability when guaranteeing the sample test, and with neck and cylinder portion contact surface and sample assembly part shape assorted, improve the suitability between neck and the sample, improve the degree of consistency that the sample was worn and torn to the neck portion, still can have stable centre gripping effect after guaranteeing neck portion wearing and tearing.
Preferably, as an improvement, the central axis of the columnar groove coincides with the central line of the clamping block, the thickness of the clamping block is 180% -220% of the radius of the cylindrical part, and the diameter of the cylindrical part is 20% -40% of the length of the clamping block. When guaranteeing the grip block to carry out the centre gripping to the sample, the pressure of sample can evenly distributed on the grip block to the thickness of grip block sets up to 180% -220% of cylinder portion radius, and the diameter of columnar groove is the 20% -40% of place grip block length, avoids the fluting in columnar groove on the grip block too big, influences the structural strength of grip block self, avoids the grip block to take place to fracture when carrying out the test, influences the result of test.
Preferably, as a modification, the diameter of the neck portion matches the diameter of the sample; the length of the necking part along the extending direction of the axis of the necking part is 10-30mm. So that the clamping block and the necking part fail or break under the action of the tensile force when the test is performed.
Preferably, as an improvement, one side, away from the columnar groove, of the first clamping block and the second clamping block is provided with a dovetail block, the central line of the dovetail block coincides with the central line of the clamping block, and the extending direction of the dovetail block coincides with the extending direction of the central axis of the columnar groove. Through set up the forked tail piece at the back of grip block, be convenient for assemble grip block and experimental facilities and fix, guarantee the stability of position between first grip block and the second grip block, sample when reducing the experiment skids, promotes sample clamping effect.
Preferably, as a modification, the length of the dovetail block is matched with the length of the clamping block; the width of one side of the dovetail block, which is close to the clamping block, is 25-34% of the width of the clamping block, and the width of the other side of the dovetail block is 36-45% of the width of the clamping block; the thickness of the dovetail block is 30% -40% of the thickness of the clamping block, the fixing effect of the dovetail block on the clamping block is improved, and the stability of the test process is guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a clamp according to a first embodiment of the present utility model.
Fig. 2 is a schematic diagram of a clamping block structure according to a first embodiment of the utility model.
Fig. 3 is a schematic side view of a clamping block according to a first embodiment of the present utility model.
Detailed Description
The following is a further detailed description of the embodiments:
reference numerals in the drawings of the specification include: the clamping device comprises a first clamping block 1, a second clamping block 2, a columnar groove 3, a cylindrical part 301, a neck part 302 and a dovetail block 4.
As shown in the accompanying drawings 1 and 2, the fixture tool of the metal mechanical property testing machine comprises a first clamping block 1 and a second clamping block 2 which are symmetrically arranged, wherein in the embodiment, the first clamping block 1 and the second clamping block 2 are rectangular blocks with the length and the width of 80mm and the thickness of 22 mm. The first clamping block 1 and the second clamping block 2 are respectively provided with a columnar groove 3, the positions of the columnar grooves 3 on the first clamping block 1 and the second clamping block 2 correspond to each other, and the shape formed by the columnar grooves 3 when the first clamping block 1 and the second clamping block 2 are combined is matched with the shape of a sample.
As shown in fig. 2, the central axis of the columnar groove 3 coincides with the central line of the clamping block, the columnar groove 3 penetrates through one side of the clamping block, the columnar groove 3 comprises a cylindrical part 301 and a necking part 302, one end of the cylindrical part 301 is connected with one end of the necking part 302, the central axis of the cylindrical part 301 coincides with the central axis of the necking part 302, and the contact surface of the necking part 302 and the cylindrical part 301 is matched with the shape of the sample assembling part.
As shown in fig. 3, the side, away from the columnar groove 3, of the first clamping block 1 and the second clamping block 2 is provided with a dovetail block 4, the central line of the dovetail block 4 is mutually overlapped with the central line of the clamping block, the extending direction of the dovetail block 4 is consistent with the extending direction of the central axis of the columnar groove 3, and the length of the dovetail block 4 along the extending direction of the dovetail block is matched with the length of the clamping block. The cross section of the dovetail block 4 is isosceles trapezoid, wherein the upper bottom of the dovetail block 4 is connected with the clamping block, preferably, the dovetail block 4 and the clamping block are integrally formed in the embodiment, and in other embodiments, the dovetail block 4 and the clamping block can be connected in other manners; the width of one side of the dovetail block 4 close to the clamping block is 25% -34% of the width of the clamping block, the width of the other side is 36% -45% of the width of the clamping block, the thickness is 30% -40% of the thickness of the clamping block, preferably, in the embodiment, the width of one side of the dovetail block 4 close to the clamping block is 32% of the width of the clamping block, the width of the other side is 37% of the width of the clamping block, the thickness is 36% of the thickness of the clamping block, namely, the width of one side of the dovetail block 4 close to the clamping block is 26mm, the width of the other side is 30mm, and the thickness is 8mm.
The depth of the cylindrical portion 301 is 50% -60% of the thickness of the clamping block, the diameter of the cylindrical portion 301 is 20% -40% of the length of the clamping block, preferably in this embodiment the depth of the cylindrical portion 301 is 55% of the thickness of the clamping block, the diameter of the cylindrical portion 301 is 30% of the length of the clamping block, that is, the depth of the cylindrical portion 301 is 12mm, and the diameter of the cylindrical portion 301 is 24mm; the diameter of the neck-down part 302 matches with the diameter of the sample, the length of the neck-down part 302 along the extending direction of the axis thereof is 10-30mm, and preferably, in the embodiment, the inner wall of the neck-down part 302 is of an arc-shaped structure protruding towards one side close to the central axis, wherein the diameter of the end, which is contacted with the cylindrical part 301, of the neck-down part 302 matches with the diameter of the cylindrical part 301, the diameter of the end, which is far away from the cylindrical part 301, of the neck-down part 302 is 8mm, and the length of the neck-down part 302 along the extending direction of the axis thereof is 16mm.
The specific implementation process is as follows:
when the metal sample is detected, the two ends of the sample are clamped and fixed through the first clamping block 1 and the second clamping block 2, when the clamping and fixing are carried out, the assembly part of the sample is placed in the columnar groove 3 of the first clamping block 1, the second clamping block 2 is combined and clamped with the first clamping block 1, and the assembly and the fixing are carried out between the first clamping block 1, the second clamping block 2 and the test equipment through the dovetail block 4. In this scheme through the necking down portion 302 of grip block fixed with the centre gripping sample, only need place the assembly portion of sample in column groove 3 when the centre gripping is fixed can, simplify the assembly step and the degree of difficulty of sample and anchor clamps, adopt bilateral symmetry's grip block combination centre gripping, the clamp and the combination between the grip block in the sample place and the anchor clamps of being convenient for, and the grip block is carrying out the centering operation of realization sample in the anchor clamps that combines afterwards can be quick, assemble and fix through setting up forked tail piece 4 and test equipment, make the fixed in position between first grip block 1 and the second grip block 2, improve the fastness of first grip block 1 and the second grip block 2 to the sample centre gripping, sample slip when reducible test, promote the sample clamping effect.
The center line of the dovetail block 4 is overlapped with the center line of the clamping block, so that when the dovetail block 4 is used for fixing the clamping blocks, the two sides of the center line of the clamping blocks can be firmly fixed, the stability and balance of the clamping blocks in the test process are improved, and gaps between the first clamping block 1 and the second clamping block 2 caused by uneven stress when the clamping blocks are fixed are avoided, and the test effect is influenced; the extending direction of the dovetail block 4 is consistent with the extending direction of the central axis of the columnar groove 3, when the clamping block is fixedly assembled with test equipment, the clamping block can be fixedly mounted by only sliding into the corresponding clamping groove along the extending direction of the dovetail block 4, the convenience of the fixed mounting of the clamping block is improved, meanwhile, the dovetail block 4 can disperse the pressure generated by the clamping block along the extending direction of the sample in the test process, and the stability of the clamping block in the test process is ensured.
The width that the forked tail piece 4 is close to clamping block width at place 32%, the width of opposite side is the 37% of clamping block width at place, the width that the forked tail piece 4 is close to clamping block one side is 26mm promptly, the width of opposite side is 30mm, make forked tail piece 4 have sufficient width and structural strength to fix the clamping block, and integrated into one piece between clamping block and the forked tail piece 4, it has sufficient structural strength to guarantee between clamping block and the forked tail piece 4, avoid the forked tail piece 4 fracture in the test process, influence the fixed effect of clamping block, influence the accuracy of test result, and the width that the forked tail piece 4 is close to clamping block one side is 26mm, the width of opposite side is 30mm, and the thickness of forked tail piece 4 is 36% of clamping block thickness, forked tail piece 4 thickness is 8mm promptly, reduce the volume of forked tail piece 4 when guaranteeing forked tail piece 4 installation convenience and fixed strength, do benefit to realizing the holistic miniaturization of anchor clamps.
The inner wall of the neck portion 302 is of an arc-shaped structure which is close to the central axis and protrudes, wherein the diameter of one end, in contact with the cylindrical portion 301, of the neck portion 302 is matched with the diameter of the cylindrical portion 301, the diameter of one end, away from the cylindrical portion 301, of the neck portion 302 is 8mm, the matching degree between the neck portion 302 and a sample is improved, the inner wall of the neck portion 302 is of an arc-shaped structure, the abrasion resistance of the inner wall of the neck portion 302 is improved, the neck portion 302 is guaranteed to be stably and firmly clamped and fixed to the sample after multiple tests are carried out, the length of the neck portion 302 along the extending direction of the axis of the neck portion is 16mm, the structural strength and the clamping firmness of the neck portion 302 are guaranteed, and the situation that the neck portion 302 breaks and fails in the test process is avoided, so that test failure is caused.
The foregoing is merely exemplary of the present utility model, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present utility model, and these should also be regarded as the protection scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the practical applicability of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (8)
1. A metal mechanical properties testing machine fixture is characterized in that: including the first grip block and the second grip block that the symmetry set up, first grip block with the second grip block corresponds the position in opposite directions and has seted up the column groove, the column groove includes cylinder portion and neck, the diameter of cylinder portion is greater than the diameter of neck contracts, neck portion one end with cylinder portion one end is connected, cylinder portion with the central axis of neck contracts is located same straight line and the opening is located the both ends of place grip block respectively, neck portion with cylinder portion contact surface shape and sample assembly part shape phase-match.
2. The metal mechanical property testing machine fixture according to claim 1, wherein: the central axis of the columnar groove coincides with the central line of the clamping block, the depth of the columnar part is 50% -60% of the thickness of the clamping block, and the diameter of the columnar part is 20% -40% of the length of the clamping block.
3. The metal mechanical property testing machine fixture according to claim 1, wherein: the diameter of the necked portion matches the diameter of the specimen.
4. A metal mechanical property testing machine fixture according to claim 3, wherein: the length of the necking part along the extending direction of the axis of the necking part is 10-30mm.
5. The metal mechanical property testing machine fixture according to claim 1, wherein: the first clamping block and the second clamping block are far away from one side of the columnar groove and are respectively provided with a dovetail block, the center line of each dovetail block coincides with the center line of the corresponding clamping block, and the extending direction of each dovetail block coincides with the extending direction of the central axis of the columnar groove.
6. The metal mechanical property testing machine fixture according to claim 5, wherein: the length of the dovetail block is matched with the length of the clamping block.
7. The metal mechanical property testing machine fixture of claim 6, wherein: the width of one side of the dovetail block, which is close to the clamping block, is 25% -34% of the width of the clamping block, and the width of the other side of the dovetail block is 36% -45% of the width of the clamping block.
8. The metal mechanical property testing machine fixture of claim 7, wherein: the thickness of the dovetail block is 30% -40% of the thickness of the clamping block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321333109.8U CN219977967U (en) | 2023-05-29 | 2023-05-29 | Clamp tool for metal mechanical property testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321333109.8U CN219977967U (en) | 2023-05-29 | 2023-05-29 | Clamp tool for metal mechanical property testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219977967U true CN219977967U (en) | 2023-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321333109.8U Active CN219977967U (en) | 2023-05-29 | 2023-05-29 | Clamp tool for metal mechanical property testing machine |
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| Country | Link |
|---|---|
| CN (1) | CN219977967U (en) |
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2023
- 2023-05-29 CN CN202321333109.8U patent/CN219977967U/en active Active
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