CN220231212U

CN220231212U - Test fixture

Info

Publication number: CN220231212U
Application number: CN202321540138.1U
Authority: CN
Inventors: 何岩; 张钫; 史鑫; 霍江娥; 张菡; 王敏; 敬海鑫
Original assignee: Sinosteel Zhengzhou Research Institute of Steel Wire Products Co Ltd
Current assignee: Sinosteel Zhengzhou Research Institute of Steel Wire Products Co Ltd
Priority date: 2023-06-15
Filing date: 2023-06-15
Publication date: 2023-12-22
Anticipated expiration: 2033-06-15

Abstract

The utility model discloses a test tool, and belongs to the technical field of material detection. The test fixture comprises a mounting part, a sample fixing part and a mounting fixing part, wherein a mounting cavity, a first mounting opening and a second mounting opening are formed in the mounting part and are oppositely arranged, the sample fixing part comprises a sample fixing column and a sample fixing seat which are mutually connected, the sample fixing column can sequentially penetrate through the first mounting opening, the mounting cavity and the second mounting opening, the sample fixing seat is located in the mounting cavity, the radial size of the first mounting opening is larger than that of the second mounting opening, and the mounting fixing part can penetrate through the first mounting opening and then be fixedly arranged in the mounting cavity. The test fixture can fix the sample on the sample fixing column, and the centering performance of the sample can be ensured by adjusting the position of the mounting fixing piece in the material detection process, so that the material detection precision is effectively improved.

Description

Test fixture

Technical Field

The utility model relates to the technical field of material detection, in particular to a test tool.

Background

In the prior art, the test sample for testing the mechanical properties of the composite material has smaller size, high strength and high brittleness.

If the centering performance of the sample is insufficient in the test process, the sample is easily broken and deflected to the end part of the chuck and nearby, the test is easily invalid, and the cost of material detection is increased.

Disclosure of Invention

The utility model aims to solve at least one of the technical problems in the related art to a certain extent, and can improve the centering performance of the sample and effectively improve the accuracy of material detection on the premise of not influencing the test result.

For this reason, an embodiment of the present utility model proposes a test fixture.

The test tool comprises a mounting part, wherein a mounting cavity is formed in the mounting part, a first mounting port and a second mounting port which are oppositely arranged are formed in the mounting part, and the first mounting port and the second mounting port are communicated with the mounting cavity; the sample fixing piece comprises a sample fixing column and a sample fixing seat which are connected with each other, the sample fixing column can sequentially pass through the first mounting opening, the mounting cavity and the second mounting opening, the sample fixing seat is positioned in the mounting cavity, and the radial dimension of the first mounting opening is larger than that of the sample fixing seat and larger than that of the second mounting opening; the installation fixing piece can pass through the first installation opening and then is fixedly arranged in the installation cavity.

According to the test tool provided by the embodiment of the utility model, after the sample fixing piece passes through the mounting cavity and the second mounting port, the sample fixing column on the sample fixing piece can be positioned outside, and the sample to be detected can be fixed on the sample fixing column. Meanwhile, the sample fixing seat on the sample fixing piece is positioned in the mounting cavity, and the sample fixing seat can slide in the mounting cavity under the action of the tensile force of the sample. Therefore, the tensile force of the sample and the axial direction of the sample can be ensured to be positioned in the same straight line, the centering performance of the sample can be ensured, the problem that the sample is easily broken and deviated to the end part of the chuck and nearby due to the insufficient centering performance of the sample, the test is easy to be invalid, the cost of material detection is increased, and the precision of material detection is effectively improved.

In some embodiments, the end of the sample fixing post is provided with a screw groove for fixing the sample.

In some embodiments, the cross sections of the first mounting port, the mounting cavity and the second mounting port are all circular, and the centers of the cross sections of the first mounting port, the mounting cavity and the second mounting port are positioned on the same straight line.

In some embodiments, the test fixture further comprises: the sliding block is arranged in the mounting cavity, a third mounting opening is formed in the sliding block, and the sample fixing column can sequentially penetrate through the third mounting opening and the second mounting opening.

In some embodiments, the mounting cavity includes a mounting end and a fixed end, the diameter of the first mounting port and the inner diameter of the mounting end are consistent, the inner diameter of the third mounting port and the outer diameter of the sample fixing post are consistent, and the radial dimension of the sample fixing seat is greater than the radial dimension of the second mounting port and the radial dimension of the third mounting port.

In some embodiments, the slider includes a first sub-block having a recess portion provided thereon and a second sub-block having a protrusion portion provided thereon, the protrusion portion being abuttable within the recess portion.

In some embodiments, a first through hole is provided on the first sub-block, the third mounting hole is provided on the second sub-block, and a radial dimension of the first through hole is greater than a radial dimension of the third mounting hole.

In some embodiments, the mounting fixture is provided with external threads, the inner wall of the mounting cavity is provided with internal threads, and the mounting fixture is in threaded connection with the mounting portion.

In some embodiments, the mounting fixture includes a mounting fixing post and a mounting fixing base connected to each other, an external thread is provided on the mounting fixing base, and the mounting fixing base is in threaded connection with the mounting portion.

In some embodiments, a pre-deformation groove is arranged in the mounting cavity, and an internal thread is arranged between the first mounting opening and the pre-deformation groove in the axial direction of the mounting cavity.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of a test fixture according to an embodiment of the present utility model.

FIG. 2 is a perspective view of a mounting portion in a test fixture according to an embodiment of the utility model.

FIG. 3 is a perspective view of a sample fixture in a test fixture according to an embodiment of the present utility model.

FIG. 4 is a perspective view of a mounting fixture in a test fixture according to an embodiment of the utility model.

Fig. 5 is a perspective view of a first sub-block of the test fixture according to an embodiment of the utility model.

FIG. 6 is a perspective view of a second sub-block of the test fixture according to an embodiment of the present utility model.

Reference numerals:

the test fixture 100, the mounting part 10, the mounting cavity 11, the first mounting port 12, the second mounting port 13, the pre-deformation groove 14, the sample fixing piece 20, the sample fixing column 21, the sample fixing seat 22, the thread groove 23, the mounting fixing piece 30, the mounting fixing column 31, the mounting fixing seat 32, the sliding block 40, the first sub-block 41, the notch part 411, the first through hole 412, the second sub-block 42, the protruding part 421 and the third mounting port 43.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the prior art, the test sample for testing the mechanical properties of the composite material has smaller size, high strength and high brittleness. If the centering performance of the sample is insufficient in the test process, the sample is easily broken and deflected to the end part of the chuck and nearby, the test is easily invalid, and the cost of material detection is increased.

As shown in fig. 1 to 6, the test fixture 100 according to the embodiment of the present utility model includes a mounting portion 10, a sample fixing member 20, and a mounting fixing member 30.

The installation part 10 is internally provided with an installation cavity 11, the installation part 10 is provided with a first installation opening 12 and a second installation opening 13 which are oppositely arranged, and the first installation opening 12 and the second installation opening 13 are communicated with the installation cavity 11.

Specifically, as shown in fig. 1 to 2, the mounting portion 10 is a substantially cylindrical member, a first mounting port 12 and a second mounting port 13 penetrating the mounting portion 10 are provided in the axial direction of the mounting portion 10, and a mounting cavity 11 is provided between the first mounting port 12 and the second mounting port 13.

Preferably, the diameter of the first mounting opening 12 corresponds to the diameter of the mounting cavity 11.

The sample holder 20 includes a sample fixing column 21 and a sample fixing seat 22 connected to each other, and the sample fixing column 21 can pass through the first mounting port 12, the mounting chamber 11, and the second mounting port 13 in this order. The sample holder 22 is located in the mounting cavity 11, and the radial dimension of the first mounting opening 12 is larger than the radial dimension of the sample holder 22 and larger than the radial dimension of the second mounting opening 13.

Specifically, as shown in fig. 1 to 3, the sample holder 20 has a substantially screw shape, and a cylindrical portion of the sample holder 20, i.e., the sample holder column 21, protrudes from the second mounting port 13 of the mounting portion 10 after passing through the mounting chamber 11.

It will be appreciated that the radial dimension of the first mounting port 12 is greater than the radial dimension of the sample holder 22 than the radial dimension of the second mounting port 13, whereby the sample holder 22 can reside within the mounting cavity 11.

The mounting fixture 30 may be fixedly disposed within the mounting cavity 11 after passing through the first mounting port 12.

Specifically, as shown in fig. 1, 2 and 4, the mounting fixture 30 is disposed in the mounting cavity 11, and a certain space is left between the mounting fixture 30 and the second mounting port 13, and the sample fixing seat 22 is located in the space.

According to the test fixture 100 of the embodiment of the utility model, after the sample fixing member 20 passes through the mounting cavity 11 and the second mounting port 13, the sample fixing column 21 on the sample fixing member 20 can be located outside, and the sample to be detected can be fixed on the sample fixing column 21. Meanwhile, the sample fixing seat 22 on the sample fixing piece 20 is located in the installation cavity 11, and the sample fixing seat 22 can slide in the installation cavity 11 under the action of the tensile force of the sample. Therefore, the tensile force of the sample and the axial direction of the sample can be ensured to be positioned in the same straight line, the centering performance of the sample can be ensured, and the precision of material detection is effectively improved.

In some embodiments, as shown in fig. 1 and 3, the end of the sample fixing post 21 is provided with a screw groove 23, and the screw groove 23 is used to fix the sample.

Specifically, as shown in fig. 1 and 3, in the mechanical property test of the composite material, the test specimen may be provided with external threads at both ends thereof, and the test specimen may be screwed and fixed to the end of the specimen fixing column 21. Thus, during the mechanical performance test of the composite material, the test sample receives the tensile force of the test equipment, and the test sample drives the test sample fixing member 20 to slide in the mounting cavity 11. Therefore, the centering performance of the sample can be ensured, the problems that the sample is insufficient in centering performance, breakage is easily caused to deviate to the end part of the chuck and the vicinity of the chuck, the test is easily invalid, the cost of material detection is increased, and the precision of material detection is effectively improved are avoided.

In some embodiments, as shown in fig. 1-4, the cross sections of the first mounting port 12, the mounting cavity 11 and the second mounting port 13 are all circular, and the centers of the cross sections of the first mounting port 12, the mounting cavity 11 and the second mounting port 13 are located on the same straight line.

It will be appreciated that in the present utility model, the mounting portion 10 and the sample holder 20 are both generally cylindrical in configuration, thereby reducing the difficulty in designing and machining the test fixture 100 of the present utility model.

In some embodiments, as shown in fig. 1-6, the test fixture 100 further includes a sliding block 40, where the sliding block 40 is disposed in the mounting cavity 11, and a third mounting hole 43 is disposed on the sliding block 40, and the sample fixing column 21 may sequentially pass through the third mounting hole 43 and the second mounting hole 13.

It will be appreciated that by providing a sliding block 40 within the mounting cavity 11. The difficulty of sliding the sample fixing piece 20 in the mounting cavity 11 can be effectively reduced, the centering performance of the sample can be guaranteed, and the accuracy of material detection is effectively improved.

In some embodiments, as shown in fig. 1-6, the mounting cavity 11 includes a mounting end and a fixed end. The diameter of the first mounting opening 12 is identical to the inner diameter of the mounting end, the inner diameter of the third mounting opening 43 is identical to the outer diameter of the sample fixing post 21, and the radial dimension of the sample fixing seat 22 is greater than the radial dimension of the second mounting opening 13 and the radial dimension of the third mounting opening 43.

It will be appreciated that the sliding block 40 is more stably sleeved on the sample fixing column 21, which is beneficial to improving the stability of the sample fixing column 21 during sliding.

The installation cavity 11 comprises an installation end and a fixed end, the installation end is the left end of the installation cavity 11, and the fixed end is the right end of the installation cavity 11.

In some embodiments, as shown in fig. 1-6, the sliding block 40 includes a first sub-block 41 and a second sub-block 42, where the first sub-block 41 is provided with a notch 411, and the second sub-block 42 is provided with a protrusion 421, and the protrusion 421 may abut in the notch 411.

Specifically, as shown in fig. 1 to 6, in the present utility model, the slider 40 includes a first sub-block 41 and a second sub-block 42. The first sub-block 41 is provided with a notch 411, and the second sub-block 42 is provided with a projection 421, and the projection 421 can be abutted against the notch 411.

In some embodiments, as shown in fig. 1-4, a first through hole 412 is provided in the first sub-block 41, and a third mounting hole 43 is provided in the second sub-block 42, where the radial dimension of the first through hole 412 is greater than the radial dimension of the third mounting hole 43.

It will be appreciated that the arc of the recess of the first sub-block 41 of the slide block 40 coincides with the arc of the solid portion of the second sub-block 42. The sliding block 40 is a main component for realizing the centering adjustment of the sample fixing seat 22, a large-size sample (the shape of the sample fixing piece 20) can be directly placed in the mounting cavity 11 to realize centering, and a small-size sample can be centered through the threaded groove of the sample fixing column 21, but each centering mode needs the sliding block 40 to slide to realize accurate centering.

In some embodiments, as shown in fig. 1-4, the mounting fixture 30 is provided with external threads, and the inner wall of the mounting cavity 11 is provided with internal threads, and the mounting fixture 30 is threadedly coupled to the mounting portion 10.

It will be appreciated that the mounting fixture 30 is threadably coupled to the mounting portion 10, so that the structure of the test fixture 100 is more stable.

In some embodiments, as shown in fig. 1 to 4, the mounting fixture 30 includes a mounting fixing post 31 and a mounting fixing base 32 connected to each other, external threads are provided on the mounting fixing base 32, and the mounting fixing base 32 is screwed with the mounting portion 10.

It can be appreciated that the mounting fixture 32 is in threaded connection with the mounting portion 10, so that the structure of the test fixture 100 is more stable.

In some embodiments, as shown in fig. 1-2, a pre-deformation groove 14 is provided in the mounting cavity 11, and an internal thread is provided between the first mounting port 12 and the pre-deformation groove 14 in the axial direction of the mounting cavity 11.

It will be appreciated that the pre-deformation groove 14 is a deformation allowance of the mounting portion 10, the pre-deformation groove 14 is beneficial to improving stability of the mounting portion 10, and the pre-deformation groove 14 is also used to limit the position of the mounting fixing seat 22 in the mounting cavity 11.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims

1. The utility model provides a test fixture which characterized in that includes:

the mounting part is internally provided with a mounting cavity, a first mounting port and a second mounting port which are oppositely arranged are arranged on the mounting part, and the first mounting port and the second mounting port are communicated with the mounting cavity;

the sample fixing piece comprises a sample fixing column and a sample fixing seat which are connected with each other, the sample fixing column can sequentially pass through the first mounting opening, the mounting cavity and the second mounting opening, the sample fixing seat is positioned in the mounting cavity, and the radial dimension of the first mounting opening is larger than that of the sample fixing seat and larger than that of the second mounting opening;

the installation fixing piece can pass through the first installation opening and then is fixedly arranged in the installation cavity.

2. The test fixture according to claim 1, wherein,

the tip of sample fixed column is provided with the screw thread recess, the screw thread recess is used for fixed sample.

3. The test fixture according to claim 1, wherein,

the cross sections of the first mounting opening, the mounting cavity and the second mounting opening are all circular, and the circle centers of the cross sections of the first mounting opening, the mounting cavity and the second mounting opening are positioned on the same straight line.

4. The test fixture of claim 1, further comprising:

the sliding block is arranged in the mounting cavity, a third mounting opening is formed in the sliding block, and the sample fixing column can sequentially penetrate through the third mounting opening and the second mounting opening.

5. The test fixture of claim 4, wherein,

the mounting cavity comprises a mounting end and a fixed end, the diameter of the first mounting opening is consistent with the inner diameter of the mounting end, the inner diameter of the third mounting opening is consistent with the outer diameter of the sample fixing column, and the radial size of the sample fixing seat is larger than the radial size of the second mounting opening and the radial size of the third mounting opening.

6. The test fixture of claim 4, wherein,

the sliding block comprises a first sub-block and a second sub-block, a notch part is arranged on the first sub-block, a protruding part is arranged on the second sub-block, and the protruding part can be abutted in the notch part.

7. The test fixture of claim 6, wherein,

the first sub-block is provided with a first through hole, the second sub-block is provided with a third mounting port, and the radial size of the first through hole is larger than that of the third mounting port.

8. The test fixture according to claim 1, wherein,

the mounting fixture is provided with external threads, the inner wall of the mounting cavity is provided with internal threads, and the mounting fixture is in threaded connection with the mounting part.

9. The test fixture of claim 8, wherein,

the installation mounting comprises an installation fixing column and an installation fixing seat which are connected with each other, an external thread is arranged on the installation fixing seat, and the installation fixing seat is in threaded connection with the installation portion.

10. The test fixture of claim 8, wherein,

the mounting cavity is internally provided with a pre-deformation groove, and an internal thread is arranged between the first mounting opening and the pre-deformation groove in the axial direction of the mounting cavity.