CN219417001U - Clamp and tensile testing device - Google Patents
Clamp and tensile testing device Download PDFInfo
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- CN219417001U CN219417001U CN202320355005.0U CN202320355005U CN219417001U CN 219417001 U CN219417001 U CN 219417001U CN 202320355005 U CN202320355005 U CN 202320355005U CN 219417001 U CN219417001 U CN 219417001U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to the technical field of clamps, and provides a clamp and a tensile testing device. Wherein, the mounting block is provided with two grooves at intervals along the first direction; the frame is sleeved on the mounting block along the second direction, the two grooves are exposed out of the frame, the frame is provided with a clamping groove along the second direction, and the stretching part is positioned in the clamping groove and is in sliding fit with the frame; the butt piece is all inserted in the recess, and butt piece part exposes outside the recess, and tensile portion is located between two butt pieces, and butt portion is located the butt piece and is opposite to the one side of frame and can with butt piece butt. The fixing of the rolling bending sample is completed, the condition that the rolling bending sample is applied with the acting force perpendicular to the rolling bending surface and only receives the stretching acting force along the second direction is avoided, the test variable is controlled, and the accuracy of test data is improved.
Description
Technical Field
The utility model relates to the technical field of clamps, in particular to a clamp and a tensile testing device.
Background
Various skin parts exist in the aircraft structural part, and the production of the parts adopts a roll bending forming and machining milling method. The roll bending forming is a technological method of non-mould rotary forming, and the raw material is subjected to bending deformation by applying a certain pressure under the action of the rotation of a roll shaft. After the rolling part is formed, a large amount of residual stress exists in the woolen, after the material is removed by machining, part of the residual stress is released, and the stress can cause certain deformation of the part in a balanced state. In order to reduce or eliminate the influence of residual stress on mechanical removal deformation, verification can be performed in a mechanical stretching mode, and certain tensile stress is applied along the direction of vertical rolling of the rolled part, so that the residual stress in the rolled part is counteracted.
In order to explore the change condition of the internal residual stress of the rolled and bent part after stretching, a test piece-level stretching test is required to be carried out, and the rolled and bent test piece is stretched along the direction of a rolled and bent bus through a certain clamp, so that the tensile stress is generated in the test piece.
The common stretcher adopts a plurality of chuck clamps to fix round bars, the claws are distributed along the circumferential direction of the bars, and the claws apply force to the bars along the radial direction of the bars so as to complete the clamping work; the upper pressing plate and the lower pressing plate are used for clamping the plates, the plates are simultaneously extruded by the upper pressing plate and the lower pressing plate in the vertical direction of the plates to finish clamping work, but for an arc-shaped plate tensile sample, the clamping difficulty is high along the clamp, and the accuracy of tensile force application is affected.
Therefore, a fixture and a tensile testing device are needed to solve the above technical problems.
Disclosure of Invention
The utility model aims to provide a clamp and a tensile testing device, which can prevent a force perpendicular to a rolling surface from being applied to a rolling sample while finishing fixing the rolling sample.
To achieve the purpose, the utility model adopts the following technical scheme:
the fixture is used for clamping a roll bending sample, the roll bending sample comprises a stretching part and an abutting part, the abutting part is arranged at two ends of the stretching part in the direction of a roll bending bus, and the fixture comprises:
the mounting block is provided with two grooves at intervals along the first direction;
the frame is sleeved on the mounting block along the second direction, the two grooves are exposed out of the frame, the frame is provided with a clamping groove along the second direction, and the stretching part is positioned in the clamping groove and is in sliding fit with the frame;
the abutting blocks are inserted into the grooves, the abutting blocks are partially exposed out of the grooves, the stretching part is positioned between the two abutting blocks, and the abutting part is positioned at one side of the abutting blocks opposite to the frame and can abut against the abutting blocks;
the first direction is perpendicular to the second direction, and the second direction is parallel to the roll bending bus direction.
As a preferable embodiment of the jig, the abutment block is slidably connected to the groove in the first direction.
As a preferable embodiment of the jig, the frame and the mounting block are fixed by a fastener.
As a preferable embodiment of the jig, the fastening member is a bolt, and the bolt is threaded through one side wall of the frame and then connected to the mounting block.
As a preferable technical scheme of the clamp, the clamping grooves are formed in two opposite sides of the frame, the groove penetrates through the mounting block along a third direction, the abutting block is spliced with the groove, and two ends of the abutting block are exposed out of the groove;
the third direction, the first direction and the second direction are perpendicular to each other.
As a preferable technical scheme of the clamp, one end of the abutting block is provided with a limiting protrusion, and the limiting protrusion can abut against the end face of the mounting block.
As a preferable technical scheme of the fixture, the clamping grooves are formed in two opposite sides of the frame, and the grooves are formed in two corresponding sides of the mounting block.
As a preferable embodiment of the jig, a rubber pad is provided on an abutting surface of the abutting block and the roll bending sample.
The tensile testing device further comprises the clamp, and the clamp is symmetrically arranged along the second direction.
As a preferable technical solution of the tensile testing device, the tensile testing device further includes a clamping portion, a chuck is provided at one end of the mounting block, and the chuck is fixed to the clamping portion.
The utility model has the beneficial effects that:
the application provides a fixture for the centre gripping rolls curved sample, rolls curved sample and includes tensile portion and butt portion, and butt portion sets up in the both ends of tensile portion roll curved busbar direction, and the fixture includes installation piece, frame and butt piece. Wherein, the mounting block is provided with two grooves at intervals along the first direction; the frame is sleeved on the mounting block along the second direction, the two grooves are exposed out of the frame, the frame is provided with a clamping groove along the second direction, and the stretching part is in sliding connection with the clamping groove; the butt piece is all inserted in the recess, and butt piece part exposes outside the recess, and tensile portion is located between two butt pieces, and butt portion is located the butt piece and is opposite to the one side of frame and can with butt piece butt.
The frame and the mounting block are nested, the stretching part of the roll bending sample is limited in the clamping groove, the roll bending sample is prevented from being separated from the clamp, and the abutting part of the abutting block and the roll bending sample is abutted to prevent the roll bending sample from being withdrawn from the clamp along the second direction when the stretching side test is carried out along the second direction. The device is arranged in such a way that the roll bending sample is fixed, and meanwhile, the action force perpendicular to the roll bending surface is prevented from being applied to the roll bending sample, and the test variable is controlled only by the stretching action force along the second direction, so that the accuracy of test data is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic diagram illustrating the assembly of a fixture and a roll-bending specimen according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a roll-bending specimen according to an embodiment of the present utility model;
FIG. 3 is a front view of a clamp provided by an embodiment of the present utility model;
fig. 4 is a side view of a clamp provided by an embodiment of the present utility model.
In the figure:
10. rolling and bending the sample; 11. a stretching section; 12. an abutting portion; 20. a mounting block; 21. a groove; 22. a chuck; 30. a frame; 31. a clamping groove; 40. an abutment block; 50. and (5) a bolt.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
As shown in fig. 1, the first direction is L1, the second direction is L2, and the third direction is L3.
As shown in fig. 1 to 4, the present application provides a clamp for clamping a roll-bending specimen 10, the roll-bending specimen 10 including a stretching portion 11 and an abutting portion 12, the abutting portion 12 being provided at both ends of the stretching portion 11 in a roll-bending busbar direction, the clamp including a mounting block 20, a frame 30 and an abutting block 40. Wherein, the mounting block 20 is provided with two grooves 21 at intervals along the first direction; the frame 30 is sleeved on the mounting block 20 along the second direction, the two grooves 21 are exposed out of the frame 30, the frame 30 is provided with a clamping groove 31 along the second direction, and the stretching part 11 is positioned in the clamping groove 31 and is in sliding fit with the frame 30; the abutting blocks 40 are inserted into the grooves 21, the abutting blocks 40 are partially exposed out of the grooves 21, the stretching part 11 is positioned between the two abutting blocks 40, and the abutting part 12 is positioned on one side of the abutting blocks 40 opposite to the frame 30 and can abut against the abutting blocks 40.
The assembly process of the jig and the roll-bending specimen 10 is as follows:
s1, enabling an abutting part 12 at one end of a roll bending sample 10 to pass through a frame 30, and placing a stretching part 11 of the roll bending sample 10 in a clamping groove 31 of the frame 30;
s2, sleeving the frame 30 and the roll bending sample 10 on the mounting block 20 along the second direction, abutting the inner peripheral wall of the frame 30 with the inner peripheral wall of the mounting block 20 at the moment, and limiting the stretching part 11 of the roll bending sample 10 in the clamping groove 31;
s3, adjusting the relative positions of the frame 30 and the mounting block 20, exposing the groove 21 to the outside, and inserting the abutting blocks 40 into the groove 21, wherein at this time, the stretching part 11 of the roll bending sample 10 is positioned between the two abutting blocks 40 which are arranged at intervals along the first direction, and the abutting part 12 of the roll bending sample 10 is positioned at the side of the abutting blocks 40 opposite to the frame 30.
By the nesting arrangement of the frame 30 and the mounting block 20, the tensile portion 11 of the roll-bending specimen 10 is partially restricted in the clamping groove 31, the roll-bending specimen 10 is prevented from being separated from the clamp, and the abutment block 40 abuts against the abutment portion 12 of the roll-bending specimen 10, so that the roll-bending specimen 10 is prevented from being withdrawn from the clamp in the second direction when the tensile test is performed in the second direction. By the arrangement, the fixing of the rolled and bent sample 10 is completed, the action force perpendicular to the rolled and bent surface is prevented from being applied to the rolled and bent sample 10, and the tensile action force along the second direction is only applied, so that the test variable is controlled, and the accuracy of test data is improved.
The first direction is perpendicular to the second direction, and the second direction is parallel to the roll bending busbar direction of the roll bending specimen 10.
Optionally, the abutment block 40 is slidably connected with the recess 21 in the first direction. So configured, by adjusting the spacing of the two abutment blocks 40 in the first direction, the fixture is enabled to accommodate more models or sizes of roll-bending specimens 10.
Optionally, the frame 30 and the mounting block 20 are secured by fasteners. So set up, fix frame 30 and installation piece 20 to prevent in assembly or experimental process, frame 30 along the second direction and installation piece 20 disintegration, and then can't continue the centre gripping roll bending sample 10 and carry out the experiment.
Alternatively, the fastener is a bolt 50, and the bolt 50 is threaded through a side wall of the frame 30 and then connected to the mounting block 20. So set up, through bolt 50 fixed, simple structure and convenient operation, when carrying out the assembly, locate the installation piece 20 with frame 30 cover after, screw bolt 50, accomplish the fixing promptly, when need lift off roll bending sample 10, only need unscrew bolt 50, frame 30 can slide along the relative installation piece 20 of second direction, withdraws from.
Alternatively, the opposite sides of the frame 30 are provided with the clamping grooves 31, the groove 21 penetrates through the mounting block 20 along the third direction, the abutting block 40 is spliced with the groove 21, and both ends of the abutting block 40 are exposed out of the groove 21. So set up, set up a centre gripping station respectively in the relative both sides of anchor clamps, and can adjust the interval of both sides butt piece 40 simultaneously, convenient operation. In one tensile test, two identical roll-bending test pieces 10 can be tested, and the completion progress of the repeatability test is quickened.
The first direction, the second direction and the third direction are perpendicular to each other.
Further, a limiting protrusion is provided at one end of the abutting block 40, and the limiting protrusion can abut against the end face of the mounting block 20. Thus, the abutment block 40 can be prevented from sliding out of the recess 21 in the third direction.
In other embodiments, the opposite sides of the frame 30 are provided with the clamping grooves 31, and the corresponding sides of the mounting block 20 are provided with the grooves 21. So set up, the relative both sides of anchor clamps are provided with a centre gripping station respectively, and two roll bending samples 10 do not influence each other, and when two roll bending samples 10 are not the same along the extension size of first direction, can adjust the interval of the butt piece 40 of two stations respectively.
Optionally, the abutment surface of the abutment block 40 with the roll-bending specimen 10 is provided with a rubber pad. So arranged, soft contact between the abutment block 40 and the roll-bending specimen 10 occurs, avoiding scratches caused during tensile testing.
The tensile testing device comprises the clamp, and the clamp is symmetrically arranged along the second direction. The actuator of the tensile testing device can move along the second direction with the clamp, and the tensile test on the roll bending specimen 10 is completed.
Optionally, the tensile testing device further includes a clamping portion, and a chuck 22 is disposed at one end of the mounting block 20, where the chuck 22 is fixed to the clamping portion.
The specific steps of the stretching operation of the rolling bending sample by using the stretching test device are as follows:
s1, fixing a chuck 22 of a mounting block 20 on a clamping part of a tensile testing device;
s2, assembling the clamp and the roll bending sample 10;
s3, checking whether the placing position of the rolled and bent sample 10 is accurate or not, and ensuring that the direction of a rolled and bent bus of the rolled and bent sample 10 is parallel to the stretching direction of the stretching test device;
and S4, starting a tensile testing device after the installation is completed, and gradually stretching the roll-bending test sample 10 along the direction of the roll-bending bus.
Furthermore, the foregoing description of the preferred embodiments and the principles of the utility model is provided herein. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.
Claims (10)
1. Clamp for centre gripping roll bending sample (10), roll bending sample (10) include tensile portion (11) and butt portion (12), butt portion (12) set up in tensile portion (11) roll bending busbar direction's both ends, its characterized in that, the clamp includes:
the mounting block (20), the mounting block (20) is provided with two grooves (21) at intervals along the first direction;
the frame (30), the frame (30) is sleeved on the mounting block (20) along the second direction, the two grooves (21) are exposed out of the frame (30), the frame (30) is provided with a clamping groove (31) along the second direction, and the stretching part (11) is positioned in the clamping groove (31) and is in sliding fit with the frame (30);
the abutting blocks (40) are inserted into the grooves (21), the abutting blocks (40) are partially exposed out of the grooves (21), the stretching part (11) is positioned between the two abutting blocks (40), and the abutting part (12) is positioned on one side, opposite to the frame (30), of the abutting blocks (40) and can be abutted against the abutting blocks (40);
the first direction is perpendicular to the second direction, and the second direction is parallel to the roll bending bus direction.
2. The clamp according to claim 1, characterized in that the abutment block (40) is slidingly connected with the recess (21) along the first direction.
3. The clamp according to claim 1, characterized in that the frame (30) and the mounting block (20) are fixed by fasteners.
4. A clamp according to claim 3, characterized in that the fastener is a bolt (50), the bolt (50) being threaded with the mounting block (20) after penetrating a side wall of the frame (30).
5. The clamp according to claim 2, characterized in that the clamping grooves (31) are formed in opposite sides of the frame (30), the grooves (21) penetrate through the mounting blocks (20) along a third direction, the abutting blocks (40) are spliced with the grooves (21), and both ends of the abutting blocks (40) are exposed out of the grooves (21);
the third direction, the first direction and the second direction are perpendicular to each other.
6. The clamp according to claim 5, characterized in that one end of the abutment block (40) is provided with a limit projection, which can abut against an end face of the mounting block (20).
7. The fixture according to claim 2, wherein the clamping grooves (31) are formed in opposite sides of the frame (30), and the grooves (21) are formed in corresponding sides of the mounting block (20).
8. The clamp according to claim 1, characterized in that the abutment surface of the abutment block (40) with the roll-bending specimen (10) is provided with a rubber pad.
9. Tensile testing device, characterized in that it comprises a clamp according to any one of claims 1-8, said clamp being symmetrically arranged along said second direction.
10. The tensile testing device according to claim 9, further comprising a clamping portion, wherein one end of the mounting block (20) is provided with a collet (22), and wherein the collet (22) is fixed to the clamping portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320355005.0U CN219417001U (en) | 2023-03-01 | 2023-03-01 | Clamp and tensile testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320355005.0U CN219417001U (en) | 2023-03-01 | 2023-03-01 | Clamp and tensile testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219417001U true CN219417001U (en) | 2023-07-25 |
Family
ID=87241058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320355005.0U Active CN219417001U (en) | 2023-03-01 | 2023-03-01 | Clamp and tensile testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219417001U (en) |
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2023
- 2023-03-01 CN CN202320355005.0U patent/CN219417001U/en active Active
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