CN211453131U - Instability-proof fixture for spline test - Google Patents
Instability-proof fixture for spline test Download PDFInfo
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- CN211453131U CN211453131U CN201922136220.8U CN201922136220U CN211453131U CN 211453131 U CN211453131 U CN 211453131U CN 201922136220 U CN201922136220 U CN 201922136220U CN 211453131 U CN211453131 U CN 211453131U
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- clamping plate
- spline
- sample strip
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- clamping block
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Abstract
The utility model discloses a spline test anti-destabilization clamp, which comprises a first clamping plate, a second clamping plate, a gasket and a locking mechanism; the first clamping plate and the second clamping plate are respectively arranged on two sides of the sample strip to be tested and are locked through a locking mechanism; gaskets are arranged between the first clamping plate and the sample strip to be tested and between the second clamping plate and the sample strip to be tested; a plurality of guide posts are arranged on the second clamping plate at positions avoiding the sample strip to be tested; and a plurality of guide holes in sliding fit with the guide posts are respectively formed in the first clamping plate. The utility model discloses set up spline test unstability anchor clamps, pressed from both sides the spline tightly between first grip block and second grip block, can prevent that the spline from producing the yawing force when tensile repeatedly to influence the problem of the accuracy of test result, set up the guide post moreover, the inhomogeneous condition of atress takes place when preventing to press from both sides tight spline, further guarantees the accuracy of test result.
Description
Technical Field
The utility model relates to a material test uses anchor clamps, especially relates to a spline test prevents unstability anchor clamps.
Background
The quality of the glass fiber reinforced plastic material is evaluated, and the glass fiber reinforced plastic material needs to be subjected to performance test. The testing of compressive strength and compressive modulus is one of the main test properties required by the international organization for standardization.
Tensile and compressive fatigue tests of glass fiber reinforced plastic materials are cited under the standard ISO 13003-. In this standard, the method of testing is specified. For different test requirements, different sizes of bars need to be prepared. For the tensile and compressive fatigue test, the middle part of the spline is thin, so that the spline is easy to buckle (destabilize) in the test process, and if the spline buckles (destabilizes), the spline can be damaged in advance, so that the real fatigue life of the spline cannot be tested. So the buckling (instability) prevention in the tension and compression fatigue test is particularly important.
Therefore, it is necessary to design a spline test instability prevention jig to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an among the prior art, thereby take place the problem that the bucking influences the test result accuracy easily in the spline testing process and provide a spline test unstability anchor clamps.
Realize the utility model discloses the technical scheme of purpose is: a spline test instability-preventing clamp comprises a first clamping plate, a second clamping plate and a locking mechanism; the first clamping plate and the second clamping plate are respectively arranged on two sides of the sample strip to be tested and are locked through a locking mechanism; gaskets are arranged between the first clamping plate and the sample strip to be tested and between the second clamping plate and the sample strip to be tested; a plurality of guide posts are arranged on the second clamping plate at positions avoiding the sample strip to be tested; and a plurality of guide holes in sliding fit with the guide posts are respectively formed in the first clamping plate.
A first clamping block is arranged on the first clamping plate; a second clamping block opposite to the first clamping block is arranged on the second clamping plate; the end surfaces of the opposite surfaces of the first clamping block and the second clamping block are curved surfaces which can be tightly attached to the central curved surface of the sample strip to be measured; gaskets are arranged on two sides of the first clamping block and the second clamping block; the two side surfaces of the gasket are tightly attached to the inclined surfaces at the two ends of the central curved surface of the sample strip to be measured and the inner surfaces of the end parts of the first clamping plate or the second clamping plate; the central curved surface of the sample strip to be measured is clamped by the first clamping block and the second clamping block; inclined planes at two ends of the central curved surface of the sample strip to be measured are clamped through a gasket.
And heat insulation films are arranged between the first clamping block and the surface of the sample strip to be measured and between the second clamping block and the surface of the sample strip to be measured.
The heat insulation film is a polytetrafluoroethylene film.
The first clamping plate and the second clamping plate are both of flat plate structures; one side of the gasket is tightly attached to the central curved surface of the spline to be tested and the inclined planes at the two ends of the central curved surface, and the other side of the gasket is tightly attached to the first clamping plate or the second clamping plate.
The guide posts are four and are distributed in a rectangular shape.
The locking mechanism is a bolt, and the bolt penetrates through the connecting holes in the first clamping plate and the second clamping plate at the position where the spline to be detected is avoided and is locked through a nut.
The gasket is made of a material with high toughness and high fatigue performance.
By adopting the technical scheme, the utility model discloses following beneficial effect has: (1) the utility model is provided with the spline test anti-instability clamp, the spline is clamped between the first clamping block and the second clamping block, and the spline can be prevented from buckling when being stretched repeatedly, thereby influencing the accuracy of the test result; simultaneously the utility model discloses set up the guide post, the inhomogeneous condition of atress appears when preventing to press from both sides tight spline, further guaranteed test result's accuracy.
(2) The utility model discloses a first grip block and second grip block opposite face terminal surface are the curved surface that can closely laminate with the central curved surface of the spline that awaits measuring, and the both sides face of gasket closely laminates with the inclined plane at the central curved surface both ends of the spline that awaits measuring and the internal surface of first grip block or second grip block tip for laminate more between spline and first grip block, second grip block and the gasket that awaits measuring, make the spline centre gripping more stable.
(3) The utility model discloses between the surface of first grip block and test spline to and all be equipped with thermal-insulated film between the surface of second grip block and test spline, be used for reducing coefficient of friction, reduce the frictional heating, thereby can prevent effectively that the spline from generating heat.
(4) The utility model discloses a thermal-insulated film adopts polytetrafluoroethylene, not only high temperature resistant, and the wearability is strong moreover.
(5) The first clamping plate and the second clamping plate of the utility model are both flat plate structures; one side of gasket closely laminates with the inclined plane at the central curved surface of the spline that awaits measuring and central curved surface both ends, and the opposite side closely laminates with first grip block or second grip block, can carry out the centre gripping to some miniature splines, and the suitability is strong.
(6) The utility model discloses four guide posts have been set up to the guide post is the rectangle and distributes, and it is even to further guarantee the spline atress, thereby improves the accuracy of test result.
(7) This the utility model discloses a locking mechanism adopts bolt locking, not only simple structure, low cost moreover.
(8) The utility model discloses a gasket adopts the material of high tenacity and high fatigue performance to make for the gasket can coincide more with the spline that awaits measuring, and is not fragile moreover, guarantees the stability of centre gripping.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is a schematic structural view of embodiment 2 of the present invention.
Fig. 4 is a schematic view of the test sample strip in embodiment 2 of the present invention.
The reference numbers in the drawings are:
the device comprises a first clamping plate 1, a first clamping block 1-1, a second clamping plate 2, a second clamping block 2-1, a gasket 3, a heat insulation film 4, a guide column 5 and a sample strip 6 to be tested.
Detailed Description
(example 1)
Referring to fig. 1 and 2, the spline test instability prevention fixture of the embodiment comprises a first clamping plate 1, a second clamping plate 2 and a locking mechanism.
The first clamping plate 1 and the second clamping plate 2 are respectively arranged on two sides of the sample strip 6 to be measured and are locked through a locking mechanism. Gaskets 3 are arranged between the first clamping plate 1 and the sample strip 6 to be tested and between the second clamping plate 2 and the sample strip 6 to be tested. The gasket 3 is preferably a rubber gasket. The second clamping plate 2 is provided with a plurality of guide posts 5 at positions avoiding the sample strip 6 to be measured. The first clamping plate 1 is provided with a plurality of guide holes which are in sliding fit with the guide posts 5 respectively.
Further, a first clamping block 1-1 is arranged on the first clamping plate 1. The second clamping plate 2 is provided with a second clamping block 2-1 opposite to the first clamping block 1-1. The end faces of the opposite surfaces of the first clamping block 1-1 and the second clamping block 2-1 are curved surfaces which can be tightly attached to the central curved surface of the sample strip 6 to be measured. The two sides of the first clamping block 1-1 and the second clamping block 2-1 are both provided with a gasket 3. The two side surfaces of the gasket 3 are tightly attached to the inclined surfaces at the two ends of the central curved surface of the sample strip 6 to be measured and the inner surface of the end part of the first clamping plate 1 or the second clamping plate 2. The central curved surface of the sample strip 6 to be measured is clamped by the first clamping block 1-1 and the second clamping block 2-1. Inclined planes at two ends of the central curved surface of the sample strip 6 to be measured are clamped through the gasket 3. The gasket 3 is preferably made of a material with high toughness and high fatigue performance (such as silicon rubber or polyurethane), so that the gasket can be more inosculated with a sample strip to be tested, is not easy to damage, and ensures the stability of clamping.
Further, heat insulation films 4 are arranged between the first clamping block 1-1 and the surface of the sample strip 6 to be measured and between the second clamping block 2-1 and the surface of the sample strip 6 to be measured. The heat insulation film 4 is preferably a polytetrafluoroethylene film. The heat insulation film is arranged, so that the test result can be prevented from being influenced by the heating of the sample strip.
Furthermore, four guide posts 5 are arranged, and the four guide posts 5 are distributed in a rectangular shape, so that the stress is uniform during spline clamping.
Furthermore, the locking mechanism preferably selects a bolt, the bolt passes through the connecting holes in the first clamping plate 1 and the second clamping plate 2 at the position avoiding the spline 6 to be measured and is locked through a nut, and the bolt and the nut are adopted for locking, so that the structure is simple, and the cost is low.
The instability-proof fixture for spline testing is suitable for being used in the testing of hyperboloid arc-shaped splines with the dimension length of more than 270 mm.
(example 2)
Referring to fig. 3, this embodiment is substantially the same as embodiment 1 except that: the first clamping plate 1 and the second clamping plate 2 of the present embodiment are both flat plate structures. One side of the gasket 3 is tightly attached to the central curved surface of the spline 6 to be measured and the inclined planes at the two ends of the central curved surface, and the other side of the gasket is tightly attached to the first clamping plate 1 or the second clamping plate 2.
The spline test instability-preventing jig of the embodiment is suitable for use in the test of the hyperboloid arc-shaped spline with small size, such as the test spline shown in fig. 4.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a spline test unstability anchor clamps which characterized in that: comprises a first clamping plate (1), a second clamping plate (2) and a locking mechanism; the first clamping plate (1) and the second clamping plate (2) are respectively arranged on two sides of the sample strip (6) to be tested and are locked through a locking mechanism; gaskets (3) are arranged between the first clamping plate (1) and the sample strip (6) to be tested and between the second clamping plate (2) and the sample strip (6) to be tested; a plurality of guide posts (5) are arranged on the second clamping plate (2) at positions avoiding the sample strip (6) to be measured; the first clamping plate (1) is provided with a plurality of guide holes in sliding fit with the guide columns (5) respectively.
2. The spline test instability prevention fixture according to claim 1, wherein: a first clamping block (1-1) is arranged on the first clamping plate (1); a second clamping block (2-1) opposite to the first clamping block (1-1) is arranged on the second clamping plate (2); the end surfaces of the opposite surfaces of the first clamping block (1-1) and the second clamping block (2-1) are curved surfaces which can be tightly attached to the central curved surface of the sample strip (6) to be tested; gaskets (3) are arranged on two sides of the first clamping block (1-1) and the second clamping block (2-1); the two side surfaces of the gasket (3) are tightly attached to the inclined surfaces at the two ends of the central curved surface of the sample strip (6) to be tested and the inner surface of the end part of the first clamping plate (1) or the second clamping plate (2); the central curved surface of the sample strip (6) to be tested is clamped by a first clamping block (1-1) and a second clamping block (2-1); inclined planes at two ends of the central curved surface of the sample strip (6) to be measured are clamped through the gasket (3).
3. The spline test instability prevention fixture according to claim 2, wherein: and heat insulation films (4) are arranged between the first clamping block (1-1) and the surface of the sample strip (6) to be tested, and between the second clamping block (2-1) and the surface of the sample strip (6) to be tested.
4. The spline test instability prevention fixture of claim 3, wherein: the heat insulation film (4) is a polytetrafluoroethylene film.
5. The spline test instability prevention fixture according to claim 1, wherein: the first clamping plate (1) and the second clamping plate (2) are both of flat plate structures; one side of the gasket (3) is tightly attached to the central curved surface of the spline (6) to be tested and the inclined planes at the two ends of the central curved surface, and the other side of the gasket is tightly attached to the first clamping plate (1) or the second clamping plate (2).
6. The spline test instability prevention fixture according to claim 1, wherein: the number of the guide columns (5) is four, and the four guide columns (5) are distributed in a rectangular shape.
7. The spline test instability prevention fixture according to claim 1, wherein: the locking mechanism is a bolt, and the bolt penetrates through the connecting holes in the first clamping plate (1) and the second clamping plate (2) at the position where the spline (6) to be detected is avoided and is locked through a nut.
8. The spline test instability prevention fixture according to claim 1, wherein: the gasket (3) is made of a material with high toughness and high fatigue performance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922136220.8U CN211453131U (en) | 2019-12-03 | 2019-12-03 | Instability-proof fixture for spline test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922136220.8U CN211453131U (en) | 2019-12-03 | 2019-12-03 | Instability-proof fixture for spline test |
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| Publication Number | Publication Date |
|---|---|
| CN211453131U true CN211453131U (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922136220.8U Active CN211453131U (en) | 2019-12-03 | 2019-12-03 | Instability-proof fixture for spline test |
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| CN (1) | CN211453131U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112697619A (en) * | 2020-12-15 | 2021-04-23 | 上海交通大学 | Metal circulating loading device under ultrasonic vibration condition |
| CN114619270A (en) * | 2022-03-10 | 2022-06-14 | 贵州振翔科技有限公司 | Multi-type part machining clamp |
-
2019
- 2019-12-03 CN CN201922136220.8U patent/CN211453131U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112697619A (en) * | 2020-12-15 | 2021-04-23 | 上海交通大学 | Metal circulating loading device under ultrasonic vibration condition |
| CN114619270A (en) * | 2022-03-10 | 2022-06-14 | 贵州振翔科技有限公司 | Multi-type part machining clamp |
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