CN216179906U - Multi-degree-of-freedom acceleration test fixture - Google Patents
Multi-degree-of-freedom acceleration test fixture Download PDFInfo
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- CN216179906U CN216179906U CN202122600462.5U CN202122600462U CN216179906U CN 216179906 U CN216179906 U CN 216179906U CN 202122600462 U CN202122600462 U CN 202122600462U CN 216179906 U CN216179906 U CN 216179906U
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Abstract
The utility model belongs to the technical field of design of tool fixtures, and discloses a multi-degree-of-freedom acceleration test fixture, which comprises: a disc, a cube frame and a patch panel; eight first threaded holes are machined in the edge of the disc at equal intervals along the circumference; the disc is connected with the acceleration test table board through the first threaded hole; the square frame is welded on the upper surface of the disc, and the center of the square coincides with the center of the disc; the square frame is in a door shape formed by welding three square panels, and adapter plate mounting holes are formed in the three square panels; the adapter plate is square, and a second threaded hole corresponding to the adapter plate mounting hole is formed in the adapter plate; the adapter plate is fixed with the square panel through a bolt; the tested product is fixed on the adapter plate.
Description
Technical Field
The utility model belongs to the technical field of design of tool fixtures, and relates to a multi-degree-of-freedom acceleration test fixture.
Background
In the process of developing electronic components, the electronic components are generally subjected to the examination of an acceleration test, and the acceleration test is divided into a performance test and a structure test according to the requirement of the national military standard 150. A. Acceleration tests in six directions of three axes are required to be completed in the two test processes, the direction of a product needs to be changed by dismounting and mounting the product for many times, and the processes are complicated. In order to improve the efficiency of the acceleration test, the fixture which can change the tested direction of the product by disassembling and assembling the adapter plate under the condition of not disassembling the product is designed, so that the product can be prevented from being disassembled for many times, the test time is saved, the consistency of the installation state of the tested product in the test is ensured, and the reliability of the test is improved.
SUMMERY OF THE UTILITY MODEL
The purpose of the utility model is as follows: in order to avoid the problem that the tested direction of a product is converted by dismounting and mounting the product for multiple times in an acceleration test, the application provides various multi-degree-of-freedom acceleration test clamps, the tested direction is converted under the condition that the product is not dismounted, the consistency of the tested state of the product is ensured, and the acceleration test efficiency and reliability can be improved.
A multi freedom acceleration test fixture includes: a disc, a cube frame and a patch panel;
eight first threaded holes are machined in the edge of the disc at equal intervals along the circumference; the disc is connected with the acceleration test table board through the first threaded hole;
the square frame is welded on the upper surface of the disc, and the center of the square coincides with the center of the disc; the square frame is in a door shape formed by welding three square panels,
the three square panels are provided with adapter plate mounting holes;
the adapter plate is square, and a second threaded hole corresponding to the adapter plate mounting hole is formed in the adapter plate; the adapter plate is fixed with the square panel through a bolt;
the tested product is fixed on the adapter plate.
Further, the first threaded hole is a counter bore. The counter bore mounting nut is designed to ensure that the plane of the disc clamp has no bulge, thereby being beneficial to mounting tested products with different sizes.
Furthermore, the number of the adapter plate mounting holes is four, and the adapter plate mounting holes are respectively located at the middle points of four edges of the square panel. By utilizing the physical characteristic of central symmetry of the square, the tested product can be fixed in situ every 90 degrees of rotation, thereby ensuring the reliability of the test.
Furthermore, the four mounting holes are positioned on the same circumference, and the circle center of the circumference is coincided with the center of the square panel. The gravity center of the tested product and the square frame are on the same axis, and the stability of the test process is guaranteed.
Furthermore, the disc is installed above the rotating arm of the acceleration test bed, and two vertical panels of the square frame need to be along the direction of the rotating arm. Therefore, the tested product can just meet the requirement of the tested direction when being installed on the two vertical panels through the adapter plate.
Further, the disc is divided into an inner disc and an outer disc; the cube frame is fixed on an inner disc, and the inner disc is connected with an outer disc through a rotating shaft and can rotate relative to the outer disc. When the product is installed on the top surface of the square frame through the design, the disassembly and assembly process of the adapter plate can be omitted when four test directions are adjusted, and the test efficiency is improved.
Advantageous effects
By designing the multi-degree-of-freedom acceleration test tool, the purpose of rapidly switching the test direction of the acceleration tested product is met. The rapid dismounting and mounting adapter plate is used for reducing the time for dismounting and mounting acceleration test products for multiple times, the consistency of the mounting and mounting states of the tested products is guaranteed, the acceleration test efficiency and the reliability are improved, the tool is convenient to process, the processing cost is low, and the test cost is reduced.
Drawings
FIG. 1 is a top view of an acceleration test fixture;
FIG. 2 is a front view of an acceleration test fixture;
FIG. 3 is a schematic view of an adapter plate;
in the figure, 1-disc clamp, 2-square frame adapter plate mounting hole, 3-clamp mounting counter bore, 4-square frame rotating arm direction front, 5-square frame top, 6-square frame rotating arm direction back, 7-adapter plate, 8-adapter plate mounting hole.
Detailed Description
The design scheme of the multi-degree-of-freedom acceleration test tool is that the purpose of changing the tested direction without detaching a product is achieved by using the completely identical and centrosymmetric physical characteristics of six planes of a cube and detaching a switching plate. A door-shaped square box consisting of three square panels with proper thickness is formed on the bottom surface of a disc-shaped clamp connected with an acceleration rotating arm through welding (wherein two vertical panels of a square frame need to be along the direction of the rotating arm), the specific size is designed according to the actual size of a tested product, and mounting holes are designed on three surfaces of the square frame and are used for being connected with a transfer plate. The keysets is an independent flat board, and through hole groove and the rigid fastening of product under test, the mounting hole of processing and square plane connection on the keysets simultaneously, the central symmetry principle is satisfied in the mounting hole design needs, reaches all can fix the purpose at the square plane through 90 rotatory keysets. In the in-service use process, the square top surface can satisfy the test demand of 4 directions of tested products through adjusting the direction of the adapter plate every 90 degrees, the front and back surfaces of the direction of the acceleration rotating arm can satisfy the test demand of 2 other directions of the tested products, the acceleration test of six directions of three axes can be completed quickly, and the acceleration test efficiency and the reliability are improved.
1) Fixedly mounting a disc clamp 1 on a rotating arm of an acceleration test bed by using a nut with proper length through a clamp mounting counter bore 3;
2) three surfaces in a cube shape, namely a front surface 4 in the rotating arm direction of the cube framework, a top surface 5 of the cube framework and a back surface 6 in the rotating arm direction of the cube framework, are welded on the disc clamp 1;
3) fixing the adapter plate 7 on any one of the three faces of the square frame through the mounting plate mounting hole 8 on the panel of the adapter plate and the square frame adapter plate mounting hole 2 for testing;
4) the test product is rigidly fixed on the adapter plate 7, the test product is fixed on the square frame through the adapter plate, the adapter plate can complete acceleration tests in 4 test directions of the test product every time the adapter plate rotates by 90 degrees, the mounting plate and the test product are mounted on two faces in the direction of the rotating arm, the acceleration tests in the other 2 test directions of the test product are completed, and therefore the test requirements of the acceleration tests of the test product in three axes and six directions can be met.
5) Designing and processing the disc clamp 1 into an inner disc and an outer disc; the cube frame is fixed on interior disc, and the product under test rigidity is fixed on the cube frame, and the acceleration test of 4 directions of product under test can be accomplished to disc in every 90 rotations, saves the dismouting process of keysets, has improved test efficiency.
Claims (6)
1. The utility model provides a multi freedom acceleration test anchor clamps which characterized in that: the jig includes: a disc, a cube frame and a patch panel;
eight first threaded holes are machined in the edge of the disc at equal intervals along the circumference; the disc is connected with the acceleration test table board through the first threaded hole;
the square frame is welded on the upper surface of the disc, and the center of the square coincides with the center of the disc; the square frame is in a door shape formed by welding three square panels,
the three square panels are provided with adapter plate mounting holes;
the adapter plate is square, and a second threaded hole corresponding to the adapter plate mounting hole is formed in the adapter plate; the adapter plate is fixed with the square panel through a bolt;
the tested product is fixed on the adapter plate.
2. The multi-degree-of-freedom acceleration test fixture as claimed in claim 1, wherein: the first threaded hole is a counter bore.
3. The multi-degree-of-freedom acceleration test fixture as claimed in claim 2, wherein: the number of the adapter plate mounting holes is four, and the adapter plate mounting holes are respectively located at the middle points of the four edges of the square panel.
4. The multi-degree-of-freedom acceleration test fixture as claimed in claim 3, wherein: the four mounting holes are positioned on the same circumference, and the circle center of the circumference is superposed with the center of the square panel.
5. The multi-degree-of-freedom acceleration test fixture as claimed in claim 4, wherein: the disc is installed above the rotating arm of the acceleration test bed, and the two vertical panels of the square frame are perpendicular to the rotating arm.
6. The multi-degree-of-freedom acceleration test fixture of claim 5, characterized in that: the disc is divided into an inner disc and an outer disc; the cube frame is fixed on an inner disc, and the inner disc is connected with an outer disc through a rotating shaft and can rotate relative to the outer disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122600462.5U CN216179906U (en) | 2021-10-27 | 2021-10-27 | Multi-degree-of-freedom acceleration test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122600462.5U CN216179906U (en) | 2021-10-27 | 2021-10-27 | Multi-degree-of-freedom acceleration test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216179906U true CN216179906U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122600462.5U Active CN216179906U (en) | 2021-10-27 | 2021-10-27 | Multi-degree-of-freedom acceleration test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216179906U (en) |
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2021
- 2021-10-27 CN CN202122600462.5U patent/CN216179906U/en active Active
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