CN112665975A - Tensile experiment anchor clamps subassembly - Google Patents
Tensile experiment anchor clamps subassembly Download PDFInfo
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- CN112665975A CN112665975A CN201910980779.0A CN201910980779A CN112665975A CN 112665975 A CN112665975 A CN 112665975A CN 201910980779 A CN201910980779 A CN 201910980779A CN 112665975 A CN112665975 A CN 112665975A
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- 238000002474 experimental method Methods 0.000 title claims abstract description 25
- 238000009864 tensile test Methods 0.000 claims abstract description 24
- 238000009434 installation Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 5
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The invention discloses a tensile experiment clamp assembly, which comprises a clamp body and a bushing, wherein the clamp body comprises: the frame body comprises an upper plate, a right side plate, a bottom plate and a left side plate which are sequentially connected end to end; the connecting bolt is arranged perpendicular to the upper plate and is positioned in the middle area of the upper surface of the upper plate; the laser emitter is arranged on the lower surface of the upper plate, and laser of the laser emitter irradiates towards the bottom plate and is collinear with the axis of the connecting bolt; the first mounting groove is arranged on the bottom plate and extends from the side edge of the bottom plate to the middle; the bushing includes: the mounting part is matched with the second mounting groove; the limiting part extends outwards from the top end of the mounting part and is used for limiting the mounting part to move towards the direction far away from the connecting bolt; and the second mounting groove extends inwards from one side of the mounting part and the limiting part, and is used for accommodating and hanging the tensile test bar. The invention solves the problem of slipping of the clamp.
Description
Technical Field
The invention relates to the field of mechanical property tensile experiments, in particular to a tensile experiment clamp assembly.
Background
At present, some tensile test bar clamping devices of test machines produced by mechanical property test machine manufacturers adopt upper and lower V-shaped tooth groove clamping heads, two blocks at the upper part and two blocks at the lower part, when the tensile test bar clamping devices are used for clamping, the two clamping blocks are folded by hydraulic pressure or air pressure to clamp the two ends of the test bar in a V-shaped groove, and then the test bar is snapped by the V-shaped triangular teeth meshing into the head of the test bar. The use of this clamping technique has several disadvantages: 1. when the hardness of the test bar material is high (HRC is more than or equal to 40), the phenomenon of chuck slipping is easy to occur, and sometimes the test bar cannot be broken at all because the V-shaped teeth cannot be engaged. 2. The teeth of the V-shaped groove chuck are easy to break, and the teeth are broken and abraded after being used for a plurality of times due to high hardness and high brittleness of the teeth, so that the phenomenon of stretching and slipping is caused. Once the slip appears, just can't carry out tensile experiment, need to change new clamp splice and just can continue work, and the purchase expense of clamp splice is all higher generally, and under the normal condition, if all carry out tensile experiment every day, generally need change many payment every year, caused very high cost of maintenance.
Disclosure of Invention
Therefore, it is necessary to provide a mechanical tensile test fixture which is simple, convenient, practical, non-slip during the test and capable of being used for a long time, aiming at the problems in the prior art.
The invention provides a tensile test fixture assembly which is applied to clamping a tensile test bar, wherein the tensile test bar comprises an experiment section and clamping sections arranged at two ends of the experiment section, and the maximum outer diameter of the clamping sections is larger than the outer diameter of the experiment section, and the tensile test fixture assembly is characterized by comprising a fixture body and a bushing, wherein the fixture body comprises:
the frame body comprises an upper plate, a right side plate, a bottom plate and a left side plate which are sequentially connected end to end;
the connecting bolt is arranged perpendicular to the upper plate and is positioned in the middle area of the upper surface of the upper plate;
the laser emitter is arranged on the lower surface of the upper plate, and laser of the laser emitter irradiates towards the bottom plate and is collinear with the axis of the connecting bolt; and
the first mounting groove is arranged on the bottom plate and extends from the side edge of the bottom plate to the middle;
the bushing includes:
the mounting part is matched with the second mounting groove;
the limiting part extends outwards from the top end of the mounting part and is used for limiting the mounting part to move towards the direction far away from the connecting bolt; and
the second mounting groove, certainly one side of installation department and spacing portion is the inside extension setting, the second mounting groove is used for holding and hanging experimental materials.
Preferably, the frame further includes ribs disposed at four corners of the frame.
Preferably, a first fixing hole is formed in the first groove, a second fixing hole corresponding to the first fixing hole is formed in the second mounting groove, and the tensile test fixture assembly further includes a pin body inserted into the first fixing hole and the second fixing hole.
Preferably, the bottom of the first groove is a semicircular groove, and the axis of the semicircular groove is coaxial with the connecting bolt.
Preferably, the mounting portion is cylindrical, the bottom of the second mounting groove is a semicircular groove, and the axis of the semicircular groove is coaxial with the mounting portion.
The invention further provides a mechanical drawing machine which comprises the drawing experiment clamp assembly.
The bushing is arranged in the first mounting groove, and the limiting part is used for limiting the mounting part to move towards the direction far away from the connecting bolt; in addition, the tensile test bar is installed in the second installation groove and used for accommodating and hanging the tensile test bar, and the problem that the V-shaped groove clamp is easy to slip in the stretching process is solved.
Meanwhile, in the stretching process, for test bars with different diameters, the bushings with different sizes (the second mounting grooves) can be replaced, so that rapid clamping is realized, and the problem of more dismounting steps is solved.
In addition, a laser emitter is arranged in the frame body, so that the tensile test bar and the connecting bolt can be installed in a centering mode.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a tensile test fixture assembly according to the present invention.
Detailed Description
The invention provides a tensile test fixture assembly which is applied to clamping a tensile test bar, wherein the tensile test bar comprises an experiment section and clamping sections arranged at two ends of the experiment section, the maximum outer diameter of the clamping sections is larger than the outer diameter of the experiment section, the tensile test fixture assembly comprises a fixture body 10 and a bushing 20, the fixture body 10 comprises a frame body 11, a connecting bolt 16, a laser emitter 15 and a first mounting groove 13, and the bushing 20 comprises a mounting part 21 and a limiting part 22; the frame body 11 comprises an upper plate, a right side plate, a bottom plate and a left side plate which are sequentially connected end to end; the connecting bolt 16 is arranged perpendicular to the upper plate and is positioned in the middle area of the upper surface of the upper plate; a laser emitter 15 is arranged on the lower surface of the upper plate, and laser of the laser emitter irradiates towards the bottom plate and is collinear with the axis of the connecting bolt 16; the first mounting groove 13 is arranged on the bottom plate and extends from the side edge of the bottom plate to the middle; the mounting part 21 is matched with the second mounting groove 23; the limiting part 22 extends outwards from the top end of the mounting part 21 and is used for limiting the mounting part 21 to move towards the direction away from the connecting bolt 16; the second mounting groove 23 extends inward from one side of the mounting portion 21 and the limiting portion 22, and the second mounting groove 23 is used for accommodating and hanging experimental materials.
When the mechanical stretching machine is used specifically, one clamp body 10 is connected with an upper stretching arm of the mechanical stretching machine through a connecting bolt 16, the other clamp body 10 is connected with a lower stretching arm of the mechanical stretching machine through the connecting bolt 16, and the bushings 20 are respectively placed in the two first mounting grooves 13, so that a stretching test bar is clamped into the bushings 20.
The clamp comprises a clamp body 10 and a bushing 20, wherein the clamp body 10 comprises a frame body 11, a connecting bolt 16, a laser emitter 15 and a first mounting groove 13, the bushing 20 comprises a mounting part 21, a limiting part 22 and a second mounting groove 23, the bushing 20 is mounted in the first mounting groove 13, and the limiting part 22 is used for limiting the mounting part 21 to move in a direction away from the connecting bolt 16; in addition, the tensile test bar is installed in the second installation groove 23 and used for accommodating and hanging the tensile test bar, and the problem that the V-shaped groove clamp is easy to slip in the stretching process is solved. Meanwhile, in the stretching process, for test bars with different diameters, the bushings 20 with different sizes (the second mounting grooves 23) can be replaced, so that rapid clamping is realized, and the problem of more dismounting steps is solved. Further, a laser transmitter 15 is provided in the frame 11 so that the tensile bar is attached to the connecting bolt 16 in a centered manner.
Further, the frame 11 further includes ribs disposed at four corners of the frame. In the present embodiment, the rib is provided to enhance the overall strength of the frame body 11, thereby improving the service life of the clamp body 10.
In this embodiment, a first fixing hole is disposed in the first groove, a second fixing hole corresponding to the first fixing hole is disposed in the second mounting groove 23, and the tensile test fixture assembly further includes a pin body inserted into the first fixing hole and the second fixing hole. In the present embodiment, the first and second fixing holes 14 and 24 and the pin body are provided to prevent the lower bushing 20 from falling off from the lower clamp body 10.
Further, the bottom of the first groove is a semicircular groove, and the axis of the semicircular groove is coaxial with the connecting bolt 16. The mounting portion 21 is cylindrical, the bottom of the second mounting groove 23 is a semicircular groove, and the axis of the semicircular groove is coaxial with the mounting portion 21. The above arrangement allows automatic centering when the tensile bar is mounted in the bushing 20 and the jig body 10.
In the present embodiment, a groove is further provided on the inner wall of the first mounting groove 13 and extends inward along a direction perpendicular to the inner wall, and the width of the groove is slightly larger than the thickness of the position-limiting part 22, so that the position-limiting part 22 is inserted therein to prevent falling off.
The invention further provides a mechanical drawing machine which comprises the drawing experiment clamp assembly. In this embodiment, the mechanical stretching machine comprises an upper stretching arm and a lower stretching arm, one clamp body 10 is connected with the upper stretching arm of the mechanical stretching machine through a connecting bolt 16, the other clamp body 10 is connected with the lower stretching arm of the mechanical stretching machine through a connecting bolt 16, and bushings 20 are respectively placed in the two first mounting grooves 13, so that a stretching test bar can be clamped into the bushings 20.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the scope of the present description should be considered as being described in the present specification. The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (6)
1. The utility model provides a tensile experiment anchor clamps subassembly, is applied to the tensile test bar of clamping, tensile test bar includes the experiment section and sets up the clamping section at experiment section both ends, the biggest external diameter of clamping section is greater than the external diameter of experiment section, a serial communication port, tensile experiment anchor clamps subassembly includes the anchor clamps body and bush, the anchor clamps body includes:
the frame body comprises an upper plate, a right side plate, a bottom plate and a left side plate which are sequentially connected end to end;
the connecting bolt is arranged perpendicular to the upper plate and is positioned in the middle area of the upper surface of the upper plate;
the laser emitter is arranged on the lower surface of the upper plate, and laser of the laser emitter irradiates towards the bottom plate and is collinear with the axis of the connecting bolt; and
the first mounting groove is arranged on the bottom plate and extends from the side edge of the bottom plate to the middle;
the bushing includes:
the mounting part is matched with the second mounting groove;
the limiting part extends outwards from the top end of the mounting part and is used for limiting the mounting part to move towards the direction far away from the connecting bolt; and
the second mounting groove, certainly one side of installation department and spacing portion is the inside extension setting, the second mounting groove is used for holding and hangs tensile test bar.
2. The tensile experiment clamp assembly of claim 1, wherein the frame further comprises ribs disposed at four corners of the interior thereof.
3. The tensile experiment clamp assembly of claim 1, wherein a first fixing hole is disposed in the first groove, a second fixing hole corresponding to the first fixing hole is disposed in the second mounting groove, and the tensile experiment clamp assembly further comprises a pin body inserted into the first fixing hole and the second fixing hole.
4. The tensile experiment clamp assembly of claim 1, wherein the bottom of the first groove is a semi-circular groove with an axis disposed coaxially with the attachment bolt.
5. The tensile experiment clamp assembly of claim 5, wherein the mounting portion is cylindrical and the bottom of the second mounting groove is a semi-circular groove having an axis disposed coaxially with the mounting portion.
6. A mechanical stretcher comprising the tensile testing fixture assembly of any of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910980779.0A CN112665975A (en) | 2019-10-16 | 2019-10-16 | Tensile experiment anchor clamps subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910980779.0A CN112665975A (en) | 2019-10-16 | 2019-10-16 | Tensile experiment anchor clamps subassembly |
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| Publication Number | Publication Date |
|---|---|
| CN112665975A true CN112665975A (en) | 2021-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910980779.0A Pending CN112665975A (en) | 2019-10-16 | 2019-10-16 | Tensile experiment anchor clamps subassembly |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040057121A (en) * | 2002-12-24 | 2004-07-02 | 재단법인 포항산업과학연구원 | Compression Jig for High Strength Bolt Tension Test |
| CN103163019A (en) * | 2013-03-04 | 2013-06-19 | 江苏大学 | Tensile test special fixture used for sheet metal or metal foil and using method |
| CN204422328U (en) * | 2015-01-29 | 2015-06-24 | 南京理工大学 | Compound substance uniaxial tensile test fixture |
| CN205506553U (en) * | 2016-03-25 | 2016-08-24 | 兰州兰石集团有限公司 | Metal material pole test piece room temperature tensile test anchor clamps |
| CN205910054U (en) * | 2016-06-21 | 2017-01-25 | 怀化珠华铸造有限公司 | Mechanical testing machine coupon anchor clamps for tensile test |
| CN109030211A (en) * | 2018-08-06 | 2018-12-18 | 江苏科技大学 | A kind of multifunctional combination stretching clamp and its application method |
| CN109655332A (en) * | 2019-02-15 | 2019-04-19 | 广东石油化工学院 | A kind of civil engineering fixture for the anti-bias of tension test |
-
2019
- 2019-10-16 CN CN201910980779.0A patent/CN112665975A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040057121A (en) * | 2002-12-24 | 2004-07-02 | 재단법인 포항산업과학연구원 | Compression Jig for High Strength Bolt Tension Test |
| CN103163019A (en) * | 2013-03-04 | 2013-06-19 | 江苏大学 | Tensile test special fixture used for sheet metal or metal foil and using method |
| CN204422328U (en) * | 2015-01-29 | 2015-06-24 | 南京理工大学 | Compound substance uniaxial tensile test fixture |
| CN205506553U (en) * | 2016-03-25 | 2016-08-24 | 兰州兰石集团有限公司 | Metal material pole test piece room temperature tensile test anchor clamps |
| CN205910054U (en) * | 2016-06-21 | 2017-01-25 | 怀化珠华铸造有限公司 | Mechanical testing machine coupon anchor clamps for tensile test |
| CN109030211A (en) * | 2018-08-06 | 2018-12-18 | 江苏科技大学 | A kind of multifunctional combination stretching clamp and its application method |
| CN109655332A (en) * | 2019-02-15 | 2019-04-19 | 广东石油化工学院 | A kind of civil engineering fixture for the anti-bias of tension test |
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Application publication date: 20210416 |
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