CN217033335U - Extensometer dress card device - Google Patents
Extensometer dress card device Download PDFInfo
- Publication number
- CN217033335U CN217033335U CN202220493288.0U CN202220493288U CN217033335U CN 217033335 U CN217033335 U CN 217033335U CN 202220493288 U CN202220493288 U CN 202220493288U CN 217033335 U CN217033335 U CN 217033335U
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- circular guide
- guide cylinder
- extensometer
- clamping force
- clamping
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Abstract
The utility model provides a extensometer clamping device which comprises a circular guide cylinder, guide rods and a spring clamping force adjusting device, wherein the rear end of the circular guide cylinder is internally provided with an internal thread; a clamping tool bit is arranged at one end of the guide rod, a circular guide block is arranged at the front end of the guide rod, which is positioned in the circular guide cylinder, close to the circular guide cylinder, and a compression spring is sleeved between the circular guide block and one end of the spring clamping force adjusting device, which is positioned in the circular guide cylinder; the front end cover of the round guide cylinder is fixedly connected with one ends of two U-shaped connecting guide rods which are oppositely arranged up and down, the other ends of the two U-shaped connecting guide rods are provided with connecting holes for the screw rod to pass through, and the connecting holes are rotatably connected with the screw rod. The extensometer clamping device provided by the utility model can meet the requirement of rapid clamping of extensometers in a tensile test of materials, and is suitable for tensile samples in different shapes and sizes.
Description
Technical Field
The utility model relates to the technical field of engineering yield detection devices in tensile tests, in particular to a clamping device for an extensometer.
Background
At present, along with metal material develops towards the direction of high strength and high toughness, many metal materials are when tensile test, the yield phenomenon is not obvious, do not have the yield even, need to install the card extensometer on the sample and detect its engineering yield, so the extensometer uses more and more frequently during tensile test, but the most rubber band that uses of the extensometer dress card that has now, some use single strand spring, complex operation, poor stability, often because skid the influence detects the precision, cause engineering yield to detect failure even.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems that the existing extensometer clamping operation is complex, the stability is poor, the detection precision is often influenced by slipping, and even the engineering yield detection fails, the utility model provides the extensometer clamping device, which can meet the requirement of rapid extensometer clamping during a tensile test of materials and is suitable for tensile samples of different shapes and sizes.
In order to achieve the purpose, the utility model provides the following technical scheme:
an extensometer clamping device comprises a circular guide cylinder with internal threads in the rear end, guide rods penetrating through the circular guide cylinder and extending to the outsides of two ends of the circular guide cylinder, and a spring clamping force adjusting device, wherein one end of the spring clamping force adjusting device is in threaded connection with the internal threads, and the other end of the spring clamping force adjusting device extends to the rear end of the circular guide cylinder;
a clamping tool bit is arranged at one end, away from the spring clamping force adjusting device, of the guide rod, a circular guide block is arranged at the front end, close to the circular guide cylinder, of the guide rod in the circular guide cylinder, and a pressing spring is sleeved between the circular guide block and one end, located in the circular guide cylinder, of the spring clamping force adjusting device;
the front end of the circular guide cylinder is provided with a front end cover, and the rear end of the circular guide cylinder is provided with a rear end cover;
the front end cover of the circular guide cylinder is fixedly connected with one ends of two U-shaped connecting guide rods which are oppositely arranged up and down, the other ends of the two U-shaped connecting guide rods are provided with connecting holes for a screw rod to pass through, and the screw rod passes through the connecting holes and is fixed by nuts;
the connecting hole is rotationally connected with the screw rod.
Preferably, the other end of the spring clamping force adjusting device is provided with a knurled knob.
Preferably, one end of the guide rod close to the spring clamping force adjusting device is provided with a manual moving cutter head handle.
Preferably, a gap is reserved between the nut of the screw rod and the nut and between the nut of the screw rod and the connecting hole.
Preferably, the front end cover and the rear end cover are connected with the circular guide cylinder through spot welding.
Preferably, the U-shaped connecting guide rod is connected with the circular guide cylinder through a connecting and fastening bolt.
Preferably, the circular guide cylinder, the guide rod and the spring clamping force adjusting device are made of aluminum alloy.
Preferably, the material of the clamping tool bit is quenched alloy steel.
Compared with the prior art, the utility model has the following beneficial effects:
1. the extensometer clamping device provided by the utility model can be installed on extensometers with various gauge lengths, meets the requirements of detecting engineering yield in a metal material tensile test by clamping the extensometer on a tensile sample, meets tensile samples with different shapes and sizes, is convenient and quick to clamp, can replace a clamping mode of a rubber band and a single-stranded spring, solves the problems that a rubber band clamping procedure is complicated, the single-stranded spring is continuously replaced with the change of the size and the shape of the tensile sample, and fills the blank of the extensometer clamping device at home and abroad.
2. The clamping force of the extensometer clamping device provided by the utility model can be continuously adjusted according to clamping, so that the extensometer is ensured to be firmly and stably clamped.
3. The clamping range of the extensometer clamping device provided by the utility model can be used within 1mm-50mm, the extensometer arranged in the existing 10T-200T tensile testing machine can be clamped on tensile samples with various sizes and shapes, and the extensometer clamping device is wide in application range, stable, reliable and convenient to operate.
4. The clamping tool bit of the extensometer clamping device provided by the utility model is made of quenching alloy steel, and has the advantages of good hardness and wear resistance and long service life.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a front view of the present invention assembled with an extensometer;
FIG. 4 is a top view of the present invention assembled with an extensometer;
FIG. 5 is a front view of a tensile specimen card according to the present invention;
in the figure, 1. a screw; 2. a nut; 3. clamping the cutter head; 4. a guide bar; 5. a circular guide block; 6. a compression spring; 7. a circular guide cylinder; 8. a spring clamping force adjusting device; 9. knurling a knob; 10. manually moving a tool bit handle; 11. connecting holes; 12, connecting a guide rod in a U shape; 13. connecting a fastening bolt; 14. a front end cover; 15. and a rear end cap.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
As shown in fig. 1-2, the present invention provides a extensometer clamping device, which includes a circular guide cylinder 7 with an internal thread in the rear end, guide rods 4 penetrating through the circular guide cylinder 7 and extending to the outside of the two ends of the circular guide cylinder 7, and a spring clamping force adjusting device 8 with one end screwed with the internal thread and the other end extending to the rear end of the circular guide cylinder 7;
a clamping tool bit 3 is arranged at one end, far away from the spring clamping force adjusting device 8, of the guide rod 4, a circular guide block 5 is arranged at the front end, close to the circular guide cylinder 7, of the guide rod in the circular guide cylinder 7, and a pressing spring 6 is sleeved between the circular guide block 5 and one end, located in the circular guide cylinder 7, of the spring clamping force adjusting device 8;
the front end of the round guide cylinder 7 is provided with a front end cover 14, and the rear end is provided with a rear end cover 15;
the front end cover 14 of the circular guide cylinder 7 is fixedly connected with one ends of two U-shaped connecting guide rods 12 which are arranged oppositely up and down, the other ends of the two U-shaped connecting guide rods 12 are provided with connecting holes 11 through which a screw rod 1 passes, and the screw rod 1 passes through the connecting holes 11 and is fixed by a nut 2;
the connecting hole 11 is rotatably connected with the screw rod 1.
According to the extensometer clamping device provided by the utility model, the circular guide block 5 can drive the pressing spring 6 to slide in the circular guide cylinder 7, the pressing force of the spring is applied to a tensile sample through the circular guide block 5, the guide rod 4 and the clamping tool bit 3, the position of the clamping tool bit 3 is changed through manual pulling, the extensometer is convenient to clamp, and the pressing force of the pressing spring 6 can be adjusted through the spring clamping force adjusting device 8.
In the present invention, the other end of the spring clamping force adjusting device 8 is provided with a knurled knob 9, and the clamping force of the clamping spring 6 can be adjusted by rotating the knurled knob 9.
In the utility model, one end of the guide rod 4, which is close to the spring clamping force adjusting device 8, is provided with a manual moving tool bit handle 10, the manual moving tool bit handle 10 is convenient for an operator to grasp, and the position of the clamping tool bit 3 is changed by manual pulling, so that the clamping of the extensometer is convenient.
In the utility model, a gap is reserved between the nut of the screw rod 1 and the nut 2 as well as between the nut and the connecting hole 11, which is beneficial to the flexible rotation of the U-shaped connecting guide rod 12 around the screw rod 1 and is convenient for the operation of clamping a tensile sample.
In the utility model, the front end cover 14 and the rear end cover 15 are connected with the circular guide cylinder 7 through spot welding, so that the limiting and protecting effects are achieved.
In the utility model, the U-shaped connecting guide rod 12 is connected with the circular guide cylinder 7 through a connecting fastening bolt 13.
In the utility model, the circular guide cylinder 7, the guide rod 4 and the spring clamping force adjusting device 8 are made of aluminum alloy, so that the strength and the portability are ensured.
In the utility model, the material of the clamping tool bit 3 is quenched alloy steel, so that the strength, the hardness and the wear resistance are ensured.
The working process of the utility model is as follows:
as shown in fig. 3-5, firstly, the extensometer clamping device is installed on two bridge arms of the extensometer, when in use, a tensile sample is clamped on a tensile testing machine, then, the extensometer clamping position is selected, the extensometer is supported by one hand to clamp an extensometer knife edge on the tensile sample, the manually-moved knife head handle 10 is grasped by the other hand to be pulled outwards, so that the distance between the clamping knife head 3 and the extensometer knife edge is larger than the size of the sample, meanwhile, the U-shaped connecting guide rod 12 is rotated to enable the extensometer clamping device to be parallel to the extensometer bridge arms, then, the manually-moved knife head handle 10 is loosened, and the loading force of the compression spring 6 is loaded on the tensile sample through the clamping knife head 3 to finish the clamping action.
The extensometer clamping device is disassembled only by grasping the hand-operated movable tool bit handle 10 by one hand and pulling outwards, so that the clamping tool bit 3 is separated from the tensile sample, and simultaneously, rotating the U-shaped connecting guide rod 12 to separate from the tensile sample.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the extensometer clamping device of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design spirit of the present invention shall fall within the scope of the present invention.
Claims (8)
1. The extensometer clamping device is characterized by comprising a circular guide cylinder with internal threads arranged in the rear end, guide rods penetrating through the circular guide cylinder and extending to the outsides of two ends of the circular guide cylinder, and a spring clamping force adjusting device, wherein one end of the spring clamping force adjusting device is in threaded connection with the internal threads, and the other end of the spring clamping force adjusting device extends to the rear end of the circular guide cylinder;
a clamping tool bit is arranged at one end, away from the spring clamping force adjusting device, of the guide rod, a circular guide block is arranged at the front end, close to the circular guide cylinder, of the guide rod in the circular guide cylinder, and a pressing spring is sleeved between the circular guide block and one end, located in the circular guide cylinder, of the spring clamping force adjusting device;
the front end of the circular guide cylinder is provided with a front end cover, and the rear end of the circular guide cylinder is provided with a rear end cover;
the front end cover of the circular guide cylinder is fixedly connected with one ends of two U-shaped connecting guide rods which are arranged oppositely up and down, the other ends of the two U-shaped connecting guide rods are provided with connecting holes for a screw rod to pass through, and the screw rod passes through the connecting holes and is fixed by nuts;
the connecting hole is rotationally connected with the screw.
2. The extensometer clamping device of claim 1 wherein the other end of the spring clamping force adjustment device is provided with a knurled knob.
3. The extensometer chucking device of claim 1 wherein the end of the guide rod adjacent the spring clamping force adjustment device is provided with a manually movable bit handle.
4. The extensometer chucking device of claim 1, wherein a gap is left between the nut of the screw and the nut and between the nut and the connecting hole.
5. The extensometer chucking device of claim 1 wherein the front end cap and the rear end cap are both connected to the circular guide cylinder by spot welding.
6. The extensometer clamping device of claim 1 wherein the U-shaped connecting guide rod is connected with the circular guide cylinder through a connecting fastening bolt.
7. The extensometer chucking device of claim 1, wherein the circular guide cylinder, the guide rod and the spring clamping force adjusting device are made of aluminum alloy.
8. The extensometer clamping device of any one of claims 1-7, wherein the clamping bit is made of quenched alloy steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220493288.0U CN217033335U (en) | 2022-03-09 | 2022-03-09 | Extensometer dress card device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220493288.0U CN217033335U (en) | 2022-03-09 | 2022-03-09 | Extensometer dress card device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217033335U true CN217033335U (en) | 2022-07-22 |
Family
ID=82453559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220493288.0U Active CN217033335U (en) | 2022-03-09 | 2022-03-09 | Extensometer dress card device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217033335U (en) |
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2022
- 2022-03-09 CN CN202220493288.0U patent/CN217033335U/en active Active
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