CN210037433U - Material strain testing device - Google Patents
Material strain testing device Download PDFInfo
- Publication number
- CN210037433U CN210037433U CN201920601026.XU CN201920601026U CN210037433U CN 210037433 U CN210037433 U CN 210037433U CN 201920601026 U CN201920601026 U CN 201920601026U CN 210037433 U CN210037433 U CN 210037433U
- Authority
- CN
- China
- Prior art keywords
- displacement sensor
- laser displacement
- chuck
- clamping
- testing device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model discloses a material strain test device, this testing arrangement adopts three laser displacement sensor, further with laser displacement sensor, adjustable sliding support and slide rail combine together, it is adjustable to have realized the range, and this testing arrangement is applicable to among the traditional material testing machine, the accessible USB interface is direct with miniature laser displacement sensor's measured data transmission to the computer on, need not to change a whole system, can satisfy the tensile test to various materials, high flexibility has, can directly replace the extensometer.
Description
Technical Field
The utility model relates to a material detects technical field, concretely relates to material strain test device.
Background
The tensile test is one of material strain tests, and the tensile test is a test method for measuring material characteristics under an axial tensile load. The data obtained by the tensile test can be used for determining the elastic limit, the elongation, the elastic modulus, the proportional limit, the area reduction, the tensile strength, the yield point, the yield strength and other tensile performance indexes of the material, is one of basic methods for testing the mechanical performance of the material, and is mainly used for testing whether the material meets the specified standard and researching the performance of the material.
The tensile test is carried out on a material testing machine, and the electronic universal material testing machine is the most widely applied material testing machine at present and is mainly applied to the tensile test of metal and non-metal materials. However, the electronic universal material tester cannot directly measure the elongation of the test material, and an extensometer is required to be added. The traditional contact type extensometer has low accuracy and complex operation, and the video extensometer solves the problem of the contact type extensometer, but has high cost and generally small measuring range. In addition, the range of the contact extensometer or the video extensometer is fixed and the extensometer must be matched with a corresponding system to operate, so that the flexibility is insufficient, and the requirement of tensile test on different materials is difficult to meet.
To sum up, need design a convenient and reliable material strain test device, solve the problem that traditional contact extensometer exists with lower cost, have high flexibility simultaneously, can directly use on original material testing machine's system, the measuring range can be adjusted according to the measuring demand, satisfies the tensile test demand to different materials.
SUMMERY OF THE UTILITY MODEL
To the technical problem who exists among the prior art, the utility model discloses a first order is: a material strain testing device is provided. Based on the above-mentioned purpose, the utility model discloses at least, provide following technical scheme:
the material strain testing device comprises a clamp assembly, a slide rail assembly and a miniature laser displacement sensor assembly;
the fixture assembly comprises a first fixture part, a second fixture part and a clamping light reflecting part, wherein a first chuck is arranged in the first fixture part, a first opening is formed in the first chuck, a second chuck is arranged in the second fixture part, a second opening is formed in the second chuck, the clamping light reflecting part comprises a first clamping terminal and a second clamping terminal, and light reflecting plates are arranged on clamping ports of the first clamping terminal and the second clamping terminal;
the miniature laser displacement sensor assembly comprises a first laser displacement sensor, a second laser displacement sensor and a third laser displacement sensor;
the sliding rail assembly comprises a first sliding rail, a second sliding rail and a third sliding rail;
the first laser displacement sensor is arranged on a first slide rail, the second laser displacement sensor is arranged on a second slide rail, the third laser displacement sensor is arranged on a third slide rail, the second laser displacement sensor is arranged opposite to the first chuck, so that a laser light path emitted by the second laser displacement sensor passes through the first opening of the first chuck and is transmitted to the reflector of the first clamping terminal, and the third laser displacement sensor is arranged opposite to the second chuck, so that a laser light path emitted by the third laser displacement sensor passes through the opening of the second chuck and is transmitted to the reflector of the second clamping terminal;
and an upper reflecting plate is arranged on one side, close to the second chuck, of the third slide rail, and a laser light path emitted by the first laser displacement sensor is transmitted to the upper reflecting plate.
Further, the first slide rail and the second slide rail are connected with the first clamp part into a whole; the third slide rail is connected with the second clamp part into a whole.
Furthermore, the first laser displacement sensor is mounted on a first adjustable sliding support, the second laser displacement sensor is mounted on a second adjustable sliding support, the third laser displacement sensor is mounted on a third adjustable sliding support, and the first, second and third adjustable sliding supports are respectively arranged on the first sliding rail, the second sliding rail and the third sliding rail.
Furthermore, the second and third adjustable sliding supports are provided with fixing screws, and the corresponding laser displacement sensors are locked on the sliding rails by adjusting the fixing screws.
Further, the first adjustable sliding support is provided with a fixed gasket, and the fixed gasket fixes the first laser displacement sensor; the first adjustable sliding support is detachably fixed on the first sliding rail.
Furthermore, a third limiting clamping block is arranged on one side, connected with the first sliding rail, of the first adjustable sliding support.
Further, the first chuck comprises a first movable chuck and a first non-movable chuck, and the first opening is arranged on the clamping end surface of the first non-movable chuck; the second chuck comprises a second movable chuck and a second non-movable chuck, and the second opening is formed in the clamping end face of the second non-movable chuck.
Furthermore, a first limiting clamping block is arranged on the inner side of the first opening of the first inactive chuck.
Furthermore, the upper reflector is detachably fixed on the third slide rail.
Furthermore, the clamping end faces of the first clamping head and the second clamping head are provided with anti-slipping threads.
In general, the utility model discloses at least, following beneficial effect has:
the utility model discloses a material strain test device adopts three laser displacement sensor, utilizes different laser displacement sensor to measure the distance change of different measuring points, and then measures the flexible volume of material in real time, is not influenced by installation error, and solves the error problem that elasticity or plastic material brought because of resilience after the fracture; additionally the utility model discloses further combine together laser displacement sensor, adjustable sliding support and slide rail, during meeting an emergency testing device integration of this material advances traditional material testing machine, it is adjustable to have realized the range, and the accessible USB interface is direct with miniature laser displacement sensor's measured data transmission to the computer on, need not to change a whole system, can satisfy the tensile test to various materials, has high flexibility, can directly replace the extensometer.
Drawings
Fig. 1 is a three-dimensional view of the material strain testing device of the present invention.
Fig. 2 is a detailed view of the present invention shown in fig. 1.
Fig. 3 is a front sectional view of the chuck of the present invention.
Fig. 4 is a back view of the first adjustable sliding bracket of the present invention.
Fig. 5 is a three-dimensional front view of the material strain testing device of the present invention.
Fig. 6 is a three-dimensional side view of the material strain testing device of the present invention.
Fig. 7 is a right side view of the material strain testing device of the present invention.
Fig. 8 is a front view of the material strain testing device of the present invention.
Fig. 9 is a top view of the material strain testing device of the present invention.
Fig. 10 is a bottom view of the material strain testing device of the present invention.
Fig. 11 is a left side view of the material strain testing device of the present invention.
Detailed Description
The invention will be described in further detail below with reference to fig. 1-11.
As shown in fig. 1, the material strain testing device of the present invention includes a fixture assembly, a slide rail assembly, and a micro laser displacement sensor assembly. The clamp assembly comprises a first clamp part 1, a second clamp part 2 and a clamping light reflecting part. The first clamp part 1 is provided with a first chuck 3, the second clamp part 2 is provided with a second chuck 4, the first chuck 3 and the second chuck 4 are clamped by a screw, and the first chuck 3 and the second chuck 4 are oppositely arranged and used for clamping a sample material 23 to be subjected to a strain test. The centre gripping terminal surface of first chuck 3 and second chuck 4 sets up to the antiskid and takes off the insection, as shown in fig. 3, its antiskid takes off the insection specifically for the terminal surface be most advanced and the terminal surface is the crisscross setting of planar high insection of material, its insection extends along the opposite direction slope of the tensile direction of material, and the insection dislocation of two centre gripping terminal surfaces, have with the especially back incision of elasticity sample material slippage direction of sample material, increase bite-force and the sliding resistance of chuck to experimental material, difficult slippage among the tensile test process, in addition, first chuck 3 and second chuck 4 use screw or locating pin fixed, can directly replace the anchor clamps on the original material testing machine, high durability and convenient use.
The miniature laser displacement sensor assembly comprises a first laser displacement sensor 5, a second laser displacement sensor 6 and a third laser displacement sensor 7. Specifically, the first, second and third laser displacement sensors may be miniature laser displacement sensors. The slide rail assembly comprises a first slide rail 8, a second slide rail 9 and a third slide rail 10. The first laser displacement sensor 5 is arranged on a first slide rail 8, the second laser displacement sensor 6 is arranged on a second slide rail 9, and the third laser displacement sensor 7 is arranged on a third slide rail 10.
The first chuck 3 is arranged opposite to the laser emitting end of the second laser displacement sensor 5, so that the laser path emitted by the second laser displacement sensor 5 can pass through the first opening 11, and the second chuck 4 is arranged opposite to the laser emitting end of the third laser displacement sensor 7, so that the laser path emitted by the third laser displacement sensor 7 can pass through the second opening 12. The first chuck 3 is provided with a first opening 11, the second chuck 4 is provided with a second opening 12, and specifically, the first opening 11 and the second opening 12 may be rectangular openings, so that a laser light path does not have any obstacle before reaching the reflector, and the measurement distance is ensured to be within the range of the laser displacement sensor. The first chuck 3 is arranged opposite to the laser emitting end of the second laser displacement sensor 5, so that the laser path emitted by the second laser displacement sensor 5 can pass through the first opening 11, and the second chuck 4 is arranged opposite to the laser emitting end of the third laser displacement sensor 7, so that the laser path emitted by the third laser displacement sensor 7 can pass through the second opening 12.
Specifically, first chuck 3 includes first movable chuck and first non-movable chuck, second chuck 4 includes second movable chuck and second non-movable chuck, first opening 11 sets up in the clamping end face of first non-movable chuck, second opening 12 sets up in the clamping end face of second non-movable chuck, as shown in fig. 1, first opening 11 sets up in the one end of the clamping end face of first non-movable chuck, second opening 12 sets up in the one end of the clamping end face of second non-movable chuck, it can be understood that the chuck that is close to bolt one side is movable chuck, the chuck that keeps away from bolt one side is fixed chuck. The clamping light reflecting part comprises a first clamping terminal 20 and a second clamping terminal 19, the first clamping terminal 20 and the second clamping terminal 19 are respectively clamped at the mark positions on the sample material 23, a light reflecting plate is arranged on the clamping ports of the first clamping terminal 20 and the second clamping terminal 19, the surface of the light reflecting plate is a rough surface, the surface of the light reflecting plate penetrates through an open laser light path 14 in the process of a tensile test and is transmitted to the surface of the light reflecting plate, the laser emitted by the laser displacement sensor is reflected, and the real-time recording of the tensile increment of the material is realized. In other embodiments, the clamping terminals may be in other forms, such as snaps, pins, or adhesives, which may achieve the same fixing or clamping effect. As shown in fig. 2, a reflector 22 is disposed at the port of the first clamping terminal 20, and the laser path 14 emitted by the second laser displacement sensor 6 is transmitted to the surface of the reflector 22 through the first opening 11 in the first chuck 3. A first limiting fixture block 21 is arranged on the inner side of the first opening 11 of the first inactive chuck of the first chuck 3, and a second limiting fixture block is arranged on the inner side of the second opening 12 of the second inactive chuck of the second chuck 4, so that the sample material 23 is ensured to be installed at the correct position.
The third slide rail 10 includes a slide rail located at the bottom of the third laser displacement sensor 7 and a slide rail located at the side wall of the third laser displacement sensor 7, and an upper light reflecting plate 13 is disposed on one side of the side wall slide rail close to the second chuck, as shown in fig. 1, the upper light reflecting plate 13 is detachably fixed to the side wall slide rail through a screw, and is attached to the second fixture portion 2, and the height of the upper light reflecting plate 13 can be adjusted according to the requirement and kept in a horizontal state, so that the laser light path 14 emitted by the first laser displacement sensor 5 is transmitted to the upper light reflecting plate 13. The laser light paths respectively emitted by the three laser displacement sensors are transmitted to the surfaces of the corresponding reflectors, so that corresponding transmission distances can be obtained, and the strain size of the sample material can be calculated according to the obtained transmission distances.
First laser displacement sensor 5, second laser displacement sensor 6 and third laser displacement sensor 7 can follow the slide rail and remove, it is specific, first laser displacement sensor 5 passes through on the detachable first adjustable sliding support 15 that is fixed in of bolt, and it is fixed through fixing gasket 18, to the measuring range demand of different tensile materials, can directly change the laser displacement sensor who uses corresponding range, measured data passes through the USB interface and transmits to the computer in, compatible with the test system of original material testing machine, the cost is far less than the video extensometer. And the measurement accuracy of the laser displacement sensor can be micron-sized, so that the laser displacement sensor is superior to a traditional contact extensometer and can record measurement data in real time. As shown in fig. 4, one end of the first adjustable sliding bracket 15 is fixed on the first sliding rail 8 through a third limiting fixture block 24, so as to ensure that the first adjustable sliding bracket 15 does not shake while moving freely up and down, and the first adjustable sliding bracket 15, the third limiting fixture block 24 and the first sliding rail 8 are fixed through bolts; the second laser displacement sensor 6 and the third laser displacement sensor 7 are respectively mounted on the second adjustable sliding support 16 and the third adjustable sliding support 17, the second adjustable sliding support 16 and the third adjustable sliding support 17 are respectively locked on the second slide rail 9 and the third slide rail 10, the second adjustable sliding support 16 and the third adjustable sliding support 17 are respectively provided with a fixing screw 26 and a fixing screw 27, as shown in fig. 5, the adjustable sliding supports can be locked on the slide rails by rotating the fixing screws. The first slide rail 8 and the second slide rail 9 are connected with the first clamp part 1 into a whole, and the third slide rail 10 is connected with the second clamp part 2 into a whole, so that the adjustable sliding support can freely move along the slide rails, and the integrated movement of the laser displacement sensor and the clamp in the strain process of the material is further ensured. The laser displacement sensor can be selected from different types according to the requirement of measuring range, such as under-the-sea HG-C1030, HG-C1050, HG-C1100, HG-C1200 or HG-C1400. Specifically, for example, when the range of 50mm cannot meet the requirement, the laser displacement sensor with the range of 100mm is directly replaced, the sliding support is adjusted to enable the initial distance to be larger than the blind spot distance of the laser displacement sensor, so that the range can be adjusted, and meanwhile, the whole system does not need to be replaced.
The material strain testing device can adopt screws to install the whole testing device on the original material testing machine, and the laser displacement sensor carries out data transmission with a computer on the material testing machine through a USB interface. The sample material 23 is placed in the gap between the jaws and the movable jaw is tightened using a screw on the outside of the movable jaw so that the sample material is clamped. The sample material clamping terminal is horizontally clamped at the marked position of the sample material, the reflector on the clamping terminal is just positioned on a laser light path of the laser sensor, and the positions of the adjustable sliding support and the upper reflector are adjusted, so that the distance between the laser displacement sensor and the reflector is positioned in the measuring range of the laser displacement sensor, and zero setting is carried out. And after the tensile test is finished, processing the data of the three laser displacement sensors by a computer to realize the measurement of the elongation of the material and finish the tensile test.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. The material strain testing device is characterized by comprising a clamp assembly, a slide rail assembly and a miniature laser displacement sensor assembly;
the fixture assembly comprises a first fixture part, a second fixture part and a clamping light reflecting part, wherein a first chuck is arranged in the first fixture part, a first opening is formed in the first chuck, a second chuck is arranged in the second fixture part, a second opening is formed in the second chuck, the clamping light reflecting part comprises a first clamping terminal and a second clamping terminal, and light reflecting plates are arranged on clamping ports of the first clamping terminal and the second clamping terminal;
the miniature laser displacement sensor assembly comprises a first laser displacement sensor, a second laser displacement sensor and a third laser displacement sensor;
the sliding rail assembly comprises a first sliding rail, a second sliding rail and a third sliding rail;
the first laser displacement sensor is arranged on a first slide rail, the second laser displacement sensor is arranged on a second slide rail, the third laser displacement sensor is arranged on a third slide rail, the second laser displacement sensor is arranged opposite to the first chuck, so that a laser light path emitted by the second laser displacement sensor passes through the first opening of the first chuck and is transmitted to the reflector of the first clamping terminal, and the third laser displacement sensor is arranged opposite to the second chuck, so that a laser light path emitted by the third laser displacement sensor passes through the opening of the second chuck and is transmitted to the reflector of the second clamping terminal;
and an upper reflecting plate is arranged on one side, close to the second chuck, of the third slide rail, and a laser light path emitted by the first laser displacement sensor is transmitted to the upper reflecting plate.
2. The test device of claim 1, wherein the first and second slide rails are connected to the first clamp portion; the third slide rail is connected with the second clamp portion.
3. The testing device of claim 1 or 2, wherein the first laser displacement sensor is mounted on a first adjustable sliding bracket, the second laser displacement sensor is mounted on a second adjustable sliding bracket, the third laser displacement sensor is mounted on a third adjustable sliding bracket, and the first, second, and third adjustable sliding brackets are respectively disposed on the first sliding rail, the second sliding rail, and the third sliding rail.
4. The testing device of claim 3, wherein the second and third adjustable sliding brackets are provided with fixing screws, and the corresponding laser displacement sensor is locked on the sliding rail by adjusting the fixing screws.
5. The testing device of claim 3, wherein the first adjustable sliding support is provided with a fixing gasket, and the fixing gasket fixes the first laser displacement sensor; the first adjustable sliding support is detachably fixed on the first sliding rail.
6. The testing device as claimed in claim 5, wherein a third limiting block is disposed on a side of the first adjustable sliding bracket connected to the first sliding rail.
7. The test apparatus as claimed in claim 1, wherein the first chuck comprises a first movable chuck and a first non-movable chuck, and the first opening is disposed on a clamping end surface of the first non-movable chuck; the second chuck comprises a second movable chuck and a second non-movable chuck, and the second opening is formed in the clamping end face of the second non-movable chuck.
8. The testing device as claimed in claim 7, wherein a first limiting block is disposed inside the first opening of the first inactive cartridge, and a second limiting block is disposed inside the second opening of the second inactive cartridge.
9. The testing device of claim 1, wherein the upper reflector is removably secured to the third rail.
10. The testing device of claim 1, wherein the gripping end surfaces of the first and second jaws have anti-slip threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920601026.XU CN210037433U (en) | 2019-04-29 | 2019-04-29 | Material strain testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920601026.XU CN210037433U (en) | 2019-04-29 | 2019-04-29 | Material strain testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210037433U true CN210037433U (en) | 2020-02-07 |
Family
ID=69362344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920601026.XU Active CN210037433U (en) | 2019-04-29 | 2019-04-29 | Material strain testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210037433U (en) |
-
2019
- 2019-04-29 CN CN201920601026.XU patent/CN210037433U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210037433U (en) | Material strain testing device | |
| CN111664771A (en) | Device for detecting inner hole of pipe part and detection method thereof | |
| CN210037415U (en) | Tensile sample clamping and centering device | |
| CN217032335U (en) | Test block flatness detection device | |
| CN209820997U (en) | Automatic high-efficient type shore durometer calibrating installation | |
| CN210070867U (en) | High-precision intelligent aperture testing device | |
| CN201715989U (en) | Parallel measurer of mouth closing position of central beam of eyeglass | |
| CN215114343U (en) | High temperature sensor support detects positioning fixture | |
| CN219415979U (en) | Quick detection jig for hole site of hydraulic valve block | |
| CN111551100A (en) | Left rear side wall triangular window assembly checking fixture | |
| CN212931210U (en) | Steel ruler calibration and detection device | |
| CN220040561U (en) | Probe testing device | |
| CN110672723A (en) | Ultrasonic defect detection measuring ruler | |
| CN213455376U (en) | Position detection device for rivet levelness measurement | |
| CN211855113U (en) | Quick detection device of automobile interior rear-view mirror base fixed spring piece | |
| CN210773828U (en) | Gauge for measuring spatial distance of hole site | |
| CN219433990U (en) | Novel PCB height measurement device | |
| CN212585616U (en) | Detection tool for measuring eccentricity of eccentric bolt | |
| CN202204425U (en) | Multifunctional clamping fixture for measuring shaft workpieces | |
| CN220783620U (en) | Clamp span adjusting mechanism | |
| CN220250937U (en) | Civil composite thickness measuring device | |
| CN218600422U (en) | Automobile trailer cover measuring and checking fixture | |
| CN218211126U (en) | Hole pitch detection tool of spout | |
| CN214011043U (en) | High-precision photoelectric acquisition device for protein analyzer based on single chip microcomputer | |
| CN214373842U (en) | Clamping and positioning device for plate tensile test |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |