CN204461890U - A kind of full support thin plate compression clamp - Google Patents
A kind of full support thin plate compression clamp Download PDFInfo
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- CN204461890U CN204461890U CN201520088772.5U CN201520088772U CN204461890U CN 204461890 U CN204461890 U CN 204461890U CN 201520088772 U CN201520088772 U CN 201520088772U CN 204461890 U CN204461890 U CN 204461890U
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- grip block
- endoporus
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- thin plate
- compression clamp
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Abstract
A kind of full support thin plate compression clamp, comprises the first grip block (1), the first guide pole (2), short lines bearing (3), the second grip block (4), spring collar (5), the second guide pole (6), long linear bearing (7), hexagon socket head cap screw (8), the 3rd grip block (9), the 4th grip block (10).The utility model fixture is for when sample thickness is less than 2mm, conventional brace truly can not reflect the problem of Material compression performance, provide a kind of thickness that is applicable to and be less than 2mm thin plate and the compression clamp of energy comprehensive support, make back up pad come on test sample by tighting a bolt, overcome the middle active section of sample of conventional brace without effectively supporting the problem that buckling failure easily occurs, in addition compared with conventional brace, this fixture does not need reinforced sheet more succinctly to facilitate, and can be applicable to continuous and discontinuous fiber reinforced composite.
Description
Technical field
The utility model relates to a kind of thin plate compression verification instrument, particularly a kind of full support compression clamp being applicable to thickness and being less than 2mm thin plate.
Background technology
Compound substance compression performance data are one of leading indicators of material property, and custom-designed test fixture be adopted to measure the compression performance of material, and therefore test fixture is for test material compression strenght is very important really and accurately.Compression sample thickness domestic at present all >=2mm, adopt the unsupported wedge shape compression clamp of active section, four pieces of wedge shape tooth plates symmetrical upper and lower side clamping sample up and down, in the middle of sample, about 14mm is long is work test section without supporting free segment.But when sample thickness is less than 2mm, because active section in the middle of sample is without effective support, likely there is unstability in compression-loaded process and buckling failure occurs, the compression performance of material can not be gone out by actual response.Therefore, thickness is less than a kind of full support fixture being applicable to thin plate of thin plate test needs of 2mm.
Utility model content
The technical matters that the utility model solves is: overcome the deficiencies in the prior art, provide a kind of be applicable to thickness be less than 2mm thin plate and can the compression clamp of comprehensive support, avoid the situation that buckling failure occurs test thin plate under compressive load effect.
Technical solution of the present utility model is: a kind of full support thin plate compression clamp, comprise: the first grip block, the first guide pole, short lines bearing, the second grip block, spring collar, the second guide pole, long linear bearing, hexagon socket head cap screw, the 3rd grip block, the 4th grip block, wherein
First grip block is convex character shape structure, longitudinal centre line both sides are provided with endoporus and endoporus runs through the first grip block up and down, and lower surface is plane, and upper surface bossing is trapezoidal and convinces line lead-out groove by patient analysis, lead-out groove extends to the bellmouth orifice at the first grip block center, and bellmouth orifice both sides are provided with circular hole;
Short lines bearing is cylinder-like structure, and is installed in the endoporus of the second grip block;
Spring collar is C type annular thin slice, is arranged on the two ends up and down in the endoporus of the second grip block and the 3rd grip block;
First guide pole is right cylinder, upper and lower both ends of the surface chamfering and insert the endoporus of the first grip block and the second grip block respectively;
Second grip block is the shape of falling character cut in bas-relief structure, and longitudinal centre line both sides are provided with endoporus and endoporus runs through the second grip block up and down, and upper end is plane, and lower surface sunk part is trapezoidal, agrees with the first grip block bossing, and the shape of falling character cut in bas-relief structure both sides are provided with circular hole;
Long linear bearing is cylinder-like structure, and is installed in the endoporus of the 3rd grip block;
Second guide pole is right cylinder, upper and lower both ends of the surface chamfering, inserts in the endoporus of the 3rd grip block and the 4th grip block;
Hex bolts is arranged on the circular hole of the first grip block, the second grip block, the 3rd grip block, the 4th grip block respectively;
3rd grip block is the structure of falling convex character shape, longitudinal centre line both sides are provided with endoporus, endoporus runs through before and after the 3rd grip block, upper surface is plane, lower surface bossing is trapezoidal and bottom convinces line lead-out groove by patient analysis, lead-out groove extends to the bellmouth orifice at the 3rd grip block center, and the bellmouth orifice left and right sides is provided with oval elongated hole, and longitudinal centre line both sides are also provided with circular hole;
4th grip block is character cut in bas-relief shape structure, and longitudinal centre line both sides are provided with endoporus, and endoporus runs through the 4th grip block, and lower end is plane, and upper surface sunk part is trapezoidal, agrees with the 3rd grip block, and character cut in bas-relief shape structure both sides are provided with circular hole.
The bellmouth orifice both sides at the first described grip block center are respectively provided with 2 circular holes.
Described trapezoidal be isosceles trapezoid.
Described bellmouth orifice is rectangle bellmouth orifice.
The barrel of described cylinder-like structure is uniformly distributed 4 row balls.
The utility model advantage is compared with prior art:
(1) test sample is placed in compression clamp by the utility model, makes back up pad come on test sample avoid sample to occur bending damage by tighting a bolt;
(2) the utility model is compared with conventional brace, does not need reinforced sheet, more succinctly facilitates;
(3) the utility model can be applicable to continuously and discontinuous fiber reinforced composite.
Accompanying drawing explanation
Fig. 1 is the utility model three-dimensional structure diagram;
Fig. 2 is the utility model Wedge gripping schematic diagram;
Fig. 3 is the utility model Wedge gripping A direction view;
Fig. 4 is the utility model Wedge gripping B direction view.
Embodiment
Be applicable to the thin plate compression clamp that thickness is less than 2mm, three-dimensional structure diagram as shown in Figure 1.This use Novel wedge-shaped fixture is as Fig. 2, Fig. 3, grip block 1 is comprised shown in Fig. 4, guide pole 2, short lines bearing 3, grip block 4, spring collar 5, guide pole 6, long linear bearing 7, hexagon socket head cap screw 8, grip block 9, grip block 10, wherein, grip block 1 is convex character shape structure, two endoporus are provided with in its longitudinal centre line symmetria bilateralis, circular hole runs through up and down, grip block 1 lower surface is plane, upper surface bossing is isosceles trapezoid, on open a wire lead-out groove, lead-out groove extends to convex character shape structure centre rectangle bellmouth orifice, for the extraction of the measurement that strains and foil gauge wire, fixed clamp block bolt is installed in bellmouth orifice both sides.Guide pole 2 is right cylinder, upper/lower terminal surface chamfer, to insert in grip block 1 endoporus and to be fixedly connected with it, after test sample puts into the second grip block 4, regulate and make test sample end concordant with the second grip block 4 bottom surface.Short lines bearing 3 is cylinder-like structure, barrel be uniformly distributed four row balls and with grip block 4 inner hole.
Grip block 4 is the shape of falling character cut in bas-relief structure, and be provided with two endoporus in its longitudinal centre line symmetria bilateralis, circular hole runs through up and down, upper end is plane, lower surface sunk part is isosceles trapezoid, and match with grip block 1 projection is trapezoidal, fixed clamp block bolt is installed on concave shape both sides.Spring collar 5 is C type annular thin slice, is arranged on short lines bearing about 3 two ends in grip block 4 circular hole and positions it.Guide pole 6 is right cylinder, upper and lower both ends of the surface chamfering, to insert in grip block 10 endoporus and to be fixedly connected with it, after test sample puts into the 4th grip block 10, regulate and make test sample end concordant with the 4th grip block 10 bottom surface.Long linear bearing 7 is cylinder-like structure, barrel be uniformly distributed four row ball and with grip block 9 inner hole.Hex bolts 8 is installed on fixing test sample on four pieces of grip blocks respectively, fixture upper and lower end face after fixing should be parallel to each other, when setup test, unscrew hex bolts 8 and test sample is put into the first grip block 1, second grip block 4, the 3rd grip block 9, the 4th grip block 10, when the first guide pole 2 insert the second grip block 4, second guide pole 6 insert grip block 10 time, tighten hex bolts 8 for completing the fixing of test sample.
Grip block 9 is the structure of falling convex character shape, two endoporus are provided with in its longitudinal centre line symmetria bilateralis, circular hole runs through up and down, upper surface is plane, lower surface bossing is isosceles trapezoid, a wire lead-out groove is opened in trapezoidal centre, extend to the structure centre of falling convex character shape rectangle bellmouth orifice, for the extraction of the measurement that strains and foil gauge wire, hole periphery installs fixed clamp block bolt, the bellmouth orifice left and right sides is oval elongated hole, for regulating grip block position, sample upper and lower side should be overlapped mutually with fixture upper and lower end face.
Grip block 10 is character cut in bas-relief shape structure, and be provided with two endoporus in its longitudinal centre line symmetria bilateralis, circular hole runs through up and down, lower end is plane, and upper surface sunk part is isosceles trapezoid, matches with grip block 9 projection is trapezoidal, and the perforate of spill both sides, for installing fixed clamp block bolt.Guide pole 2 and guide pole 6 are for locating grip block 1, grip block 10, and after test sample assembling, the short lines bearing 3 in grip block 1, the long linear bearing 7 in grip block 10 can be free to slide along guide pole by gravity is upper and lower.Short lines bearing 3 is arranged in grip block 4, and upper and lower two ends are positioned by spring collar 5.Linear bearing 7 is arranged in long grip block 9, and upper and lower two ends are positioned by spring collar 5.Grip block 1 and guide pole 2 assemble, and are transition fit between the two, position after assembling to grip block 4.Grip block 10 and guide pole 6 assemble, and are transition fit between the two, position after assembling to grip block 9.Grip block 1, grip block 4, grip block 9, grip block 10 perforate, for the installation of hexagon socket head cap screw 6.Grip block 1, grip block 9 open hydraucone and wire lead-out groove, for the extraction of the measurement that strains and foil gauge wire.
During sample assembling, as Fig. 2, Fig. 3, two groups of grip blocks are put in shown in Fig. 4 on a hard flat board, the grip block 1 of guide is positioned at below, unclamp the bolt connecting grip block, ensure enough spaces and can hold sample, then the grip block 4 that band minor axis holds is taken off, sample is put into two groups of grip block chien shih sample longitudinal centre lines consistent with the center line of grip block, foil gauge wire is drawn from lead-out groove, load onto the band grip block 4 that holds of minor axis and be screwed into two bolts above, ensure that sample lower surface flushes with fixture bottom surface, and with base contacts, tightening two bolts below gently makes it there is certain holding force to sample simultaneously.Spin upside down clamping plate, the guide pole of grip block 1 is inserted in grip block 4, due to the length of one is long and the other is short two grip blocks and shorter than specimen length, therefore, sample both sides are by each appearance V-type single-side support section.Because this single-side support section is narrower and be V-type, therefore when being compressed load, there will not be bending yield phenomenon, guarantee that the end of sample is concordant with bottom surface, and and base contacts, tighten all the other four bolts gently, fixed clamp block and sample relative position, then all six bolts are firmly tightened in equilibrium, notice that screwing force is apart from can not too greatly, otherwise bring additional frictional resistance to affect test findings.Foil gauge wire is connected with strainmeter, the assembling of sample and fixture, has been connected with instrument, fixture is placed on testing machine compressed platform, starts test.
Table 1 is for selecting same batch of carbon fiber enhancement resin base composite material probe intensity contrast test the data obtained, result shows that the utility model can enable sample substantially keep full holding state when bearing compressive load, ensure the failure mode that sample is correct, and install fast and convenient.
Table 1
The content be not described in detail in the utility model instructions belongs to the known technology of those skilled in the art.
Claims (5)
1. one kind supports thin plate compression clamp entirely, it is characterized in that comprising: the first grip block (1), the first guide pole (2), short lines bearing (3), the second grip block (4), spring collar (5), the second guide pole (6), long linear bearing (7), hexagon socket head cap screw (8), the 3rd grip block (9), the 4th grip block (10), wherein
First grip block (1) is convex character shape structure, longitudinal centre line both sides are provided with endoporus and endoporus runs through the first grip block (1) up and down, lower surface is plane, upper surface bossing is trapezoidal and convinces line lead-out groove by patient analysis, lead-out groove extends to the bellmouth orifice at the first grip block (1) center, and bellmouth orifice both sides are provided with circular hole;
Short lines bearing (3) is cylinder-like structure, and is installed in the endoporus of the second grip block (4);
Spring collar (5) is C type annular thin slice, is arranged on the second grip block (4) and the two ends up and down in the endoporus of the 3rd grip block (9);
First guide pole (2) is right cylinder, upper and lower both ends of the surface chamfering and insert the endoporus of the first grip block (1) and the second grip block (4) respectively;
Second grip block (4) is the shape of falling character cut in bas-relief structure, longitudinal centre line both sides are provided with endoporus and endoporus runs through the second grip block (4) up and down, upper end is plane, lower surface sunk part is trapezoidal, agree with the first grip block (1) bossing, the shape of falling character cut in bas-relief structure both sides are provided with circular hole;
Long linear bearing (7) is cylinder-like structure, and is installed in the endoporus of the 3rd grip block (9);
Second guide pole (6) is right cylinder, upper and lower both ends of the surface chamfering, inserts the 3rd grip block (9) with in the endoporus of the 4th grip block (10);
Hex bolts (8) is arranged on the circular hole of the first grip block (1), the second grip block (4), the 3rd grip block (9), the 4th grip block (10) respectively;
3rd grip block (9) is the structure of falling convex character shape, longitudinal centre line both sides are provided with endoporus, endoporus runs through before and after the 3rd grip block (9), upper surface is plane, lower surface bossing is trapezoidal and bottom convinces line lead-out groove by patient analysis, lead-out groove extends to the bellmouth orifice at the 3rd grip block (9) center, and the bellmouth orifice left and right sides is provided with oval elongated hole, and longitudinal centre line both sides are also provided with circular hole;
4th grip block (10) is character cut in bas-relief shape structure, longitudinal centre line both sides are provided with endoporus, endoporus runs through the 4th grip block (10), lower end is plane, upper surface sunk part is trapezoidal, agree with the 3rd grip block (9), and character cut in bas-relief shape structure both sides are provided with circular hole.
2. one according to claim 1 supports thin plate compression clamp entirely, it is characterized in that: the bellmouth orifice both sides at described the first grip block (1) center are respectively provided with 2 circular holes.
3. one according to claim 1 and 2 supports thin plate compression clamp entirely, it is characterized in that: described trapezoidal be isosceles trapezoid.
4. one according to claim 1 and 2 supports thin plate compression clamp entirely, it is characterized in that: described bellmouth orifice is rectangle bellmouth orifice.
5. one according to claim 1 and 2 supports thin plate compression clamp entirely, it is characterized in that: the barrel of described cylinder-like structure is uniformly distributed 4 row balls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520088772.5U CN204461890U (en) | 2015-02-06 | 2015-02-06 | A kind of full support thin plate compression clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520088772.5U CN204461890U (en) | 2015-02-06 | 2015-02-06 | A kind of full support thin plate compression clamp |
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| Publication Number | Publication Date |
|---|---|
| CN204461890U true CN204461890U (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520088772.5U Active CN204461890U (en) | 2015-02-06 | 2015-02-06 | A kind of full support thin plate compression clamp |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258994A (en) * | 2015-10-20 | 2016-01-20 | 南京航空航天大学 | Device and method for preparing fiber in-plane buckling in-situ strength test sample |
| CN107727489A (en) * | 2017-08-30 | 2018-02-23 | 中国航发北京航空材料研究院 | A kind of clamping and fixing device of sheet metal compression |
| CN110879179A (en) * | 2019-10-30 | 2020-03-13 | 鞍钢股份有限公司 | High-temperature compression device and test method for plate-shaped test sample |
-
2015
- 2015-02-06 CN CN201520088772.5U patent/CN204461890U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258994A (en) * | 2015-10-20 | 2016-01-20 | 南京航空航天大学 | Device and method for preparing fiber in-plane buckling in-situ strength test sample |
| CN105258994B (en) * | 2015-10-20 | 2018-02-06 | 南京航空航天大学 | Fiber plane buckling strength test sample preparation device in place and preparation method thereof |
| CN107727489A (en) * | 2017-08-30 | 2018-02-23 | 中国航发北京航空材料研究院 | A kind of clamping and fixing device of sheet metal compression |
| CN110879179A (en) * | 2019-10-30 | 2020-03-13 | 鞍钢股份有限公司 | High-temperature compression device and test method for plate-shaped test sample |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |