CN113916479A - Triaxial vibration device and method capable of fixing circuit boards of various sizes - Google Patents
Triaxial vibration device and method capable of fixing circuit boards of various sizes Download PDFInfo
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- CN113916479A CN113916479A CN202111141969.7A CN202111141969A CN113916479A CN 113916479 A CN113916479 A CN 113916479A CN 202111141969 A CN202111141969 A CN 202111141969A CN 113916479 A CN113916479 A CN 113916479A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 25
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/06—Multidirectional test stands
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Abstract
The invention provides a triaxial vibrating device and a method capable of fixing circuit boards with various sizes, wherein the device comprises a first vibrating plate and a second vibrating plate, wherein the first vibrating plate is provided with four limiting blocks for positioning the circuit boards in the length and width directions, and the first vibrating plate is provided with an annular limiting block for fixing the circuit boards; the first circuit board is provided with an annular groove for flexibly adjusting the direction of the circuit board; assembling the second vibrating plate on the first vibrating plate which is fixed with a circuit board to be tested and completes vibration tests in the horizontal and vertical directions through the mounting hole; and then the second vibrating plate which is already assembled with the first vibrating plate is assembled on the vibrating table through the mounting hole corresponding to the vibrating table. The device has the advantages of compact structure, light weight, convenient installation and carrying, low manufacturing cost and convenient operation, and can prevent the circuit board from shaking.
Description
Technical Field
The invention relates to the technical field of circuit board auxiliary tools, in particular to a triaxial vibration device and a triaxial vibration method capable of fixing circuit boards of various sizes.
Background
The circuit board is used as an important component in aerospace products, the vibration resistance of the circuit board directly determines whether the products can normally work in practical application, and the vibration resistance of the circuit board is ensured to have very important significance.
According to corresponding standards, the circuit board on the aerospace product needs to be subjected to three-axis test verification such as environmental stress screening, random vibration, road transportation and the like.
The existing vibration table has a single thrust direction and only has a horizontal direction or a vertical direction, so that a single vibration table can only meet the requirement of vibration verification in one direction. If need vibrate to three direction, need dismouting circuit board and corresponding frock many times. Therefore, the labor and the financial resources are consumed, the test efficiency is greatly reduced, and the actual production requirements cannot be met. Meanwhile, most of the devices for fixing the circuit board can only be assembled with the circuit board of one size, and if the circuit boards of different sizes need to be vibrated, various devices need to be replaced, so that the working efficiency is seriously influenced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a triaxial vibration device and a triaxial vibration method capable of fixing circuit boards with various sizes, which are used for solving the technical problems that the circuit boards with different sizes cannot vibrate in three directions and various devices need to be replaced in the prior art.
According to a first aspect of the present invention, there is provided a triaxial vibration device capable of fixing circuit boards of various sizes, the triaxial vibration device including:
the first vibrating plate is provided with a first limiting block and a second limiting block which are positioned at the same horizontal position; the first limiting block and the second limiting block can be fixed on the first vibrating plate through screws; the first limiting block and the second limiting block are used for positioning and fixing the circuit board to be tested in the width direction;
the first vibrating plate is provided with a third limiting block and a fourth limiting block which are perpendicular to the first limiting block and the second limiting block and are positioned at the same horizontal position; the third limiting block and the fourth limiting block can be fixed on the first vibrating plate through screws; the third limiting block and the fourth limiting block are used for positioning and fixing the circuit board to be tested in the length direction;
the first vibrating plate is provided with an annular limiting block, and the annular limiting block can be fixed on the first vibrating plate through three screws and is used for limiting and fixing the circuit board to be tested in the length direction;
the first vibrating plate is provided with two centrosymmetric annular grooves with a preset depth, namely a first annular groove and a second annular groove, and the annular angles of the first annular groove and the second annular groove are 90 degrees;
a third annular groove is formed in the first annular groove, the third annular groove is concentric with the first annular groove and has the same angle with the first annular groove, and the sum of the depth of the third annular groove and the depth of the first annular groove is the thickness of the first vibrating plate;
a fourth annular groove is formed in the second annular groove, the fourth annular groove and the second annular groove are concentric and have the same angle, and the sum of the depth of the fourth annular groove and the depth of the second annular groove is equal to the thickness of the first vibrating plate;
the second vibration plate is provided with a mounting hole corresponding to the first vibration plate and a mounting hole corresponding to the vibration table, and the second vibration plate is assembled on the first vibration plate which is fixed with a circuit board to be tested and completes vibration tests in the horizontal and vertical directions through the mounting holes; and then the second vibrating plate which is already assembled with the first vibrating plate is assembled on the vibrating table through the mounting hole corresponding to the vibrating table.
According to a second aspect of the present invention, there is provided a vibration method using the three-axis vibration device as described above, the vibration method comprising the steps of:
step S101: adjusting a first limiting block, a second limiting block, a third limiting block, a fourth limiting block and an annular limiting block of the first vibrating plate to fix the circuit board to be tested; testing the circuit board to be tested in the horizontal direction and the vertical direction;
step S102: and assembling the second vibrating plate on the first vibrating plate through the reinforcing ribs and the screws, assembling the second vibrating plate with the first vibrating plate on a vibrating table, and testing the direction of the circuit board to be tested, which is vertical to the surface of the circuit board.
According to the scheme of the invention, the circuit boards with different sizes can be fixed, and the vibration of the circuit boards in three directions can be completed on the same vibration table. The invention has compact structure, can prevent the circuit board from shaking, has lighter weight, is convenient to install and carry, has low manufacturing cost and is convenient to operate.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic view of a first vibration plate provided with a device according to an embodiment of the present invention;
FIG. 2 is a schematic view of a stop block according to one embodiment of the present invention;
FIG. 3 is a schematic view of an annular stop block according to an embodiment of the present invention;
fig. 4 is a schematic view of a first vibration plate according to an embodiment of the present invention;
fig. 5 is a schematic view of a second vibration plate provided with a device according to an embodiment of the present invention.
Reference numerals: 1a, a first limiting block; 1b, a second limiting block; 2a, a third limiting block; 2b, a fourth limiting block; 3, a first vibrating plate; 4, an annular limiting block; 5, a circuit board; 6, reinforcing ribs; and 7, a second vibrating plate.
Detailed Description
First, a triaxial vibration device capable of fixing circuit boards of various sizes according to an embodiment of the present invention will be described with reference to fig. 1. As shown in fig. 1, the triaxial vibration device capable of fixing circuit boards of various sizes includes:
the vibrating plate comprises a first vibrating plate 3, wherein a first limiting block 1a and a second limiting block 1b which are positioned at the same horizontal position are arranged on the first vibrating plate 3; the first limiting block 1a and the second limiting block 1b can be fixed on the first vibrating plate 3 through screws; the first limiting block 1a and the second limiting block 1b are used for positioning and fixing the circuit board to be tested in the width direction;
the first vibrating plate 3 is provided with a third limiting block 2a and a fourth limiting block 2b which are perpendicular to the first limiting block 1a and the second limiting block 1b and are positioned at the same horizontal position; the third limiting block 2a and the fourth limiting block 2b can be fixed on the first vibrating plate 3 by screws; the third limiting block 2a and the fourth limiting block 2b are used for positioning and fixing the circuit board to be tested in the length direction;
the first vibrating plate 3 is provided with an annular limiting block 4, and the annular limiting block can be fixed on the first vibrating plate 3 through three screws and is used for limiting and fixing the circuit board to be tested in the length direction;
the first vibration plate 3 is provided with two centrosymmetric annular grooves with a predetermined depth, namely a first annular groove 31a and a second annular groove 31b, and the annular angles of the first annular groove 31a and the second annular groove 31b are 90 degrees;
a third annular groove 32a is formed in the first annular groove 31a, the third annular groove 32a is concentric with and at the same angle with the first annular groove 31a, and the sum of the depth of the third annular groove 32a and the depth of the first annular groove 31a is the thickness of the first vibration plate 3;
a fourth annular groove 32b is formed in the second annular groove 31b, the fourth annular groove 32b is concentric with and at the same angle with the second annular groove 31b, and the sum of the depth of the fourth annular groove 32b and the depth of the second annular groove 31b is the thickness of the first vibration plate 3;
a second vibration plate having a mounting hole corresponding to the first vibration plate 3 and a mounting hole corresponding to a vibration table, the second vibration plate being mounted on the first vibration plate to which a circuit board to be tested is fixed and on which vibration tests are performed in both horizontal and vertical directions through the mounting holes; and then the second vibrating plate which is already assembled with the first vibrating plate is assembled on the vibrating table through the mounting hole corresponding to the vibrating table.
Furthermore, the triaxial vibration device capable of fixing circuit boards of various sizes comprises two reinforcing ribs, threaded holes are processed on the end faces of the reinforcing ribs, which are in contact with the first vibration plate and the second vibration plate, and countersunk holes are processed at corresponding positions of the two vibration plates; the two vibrating plates and the reinforcing ribs can be fixed together by screw connection. Therefore, the deformation of the structural part caused by the vibration test can be reduced, and the mechanical property of the whole device is improved.
In this embodiment, as shown in fig. 2, the limiting blocks include a first limiting block, a second limiting block, a third limiting block, and a fourth limiting block, and the first limiting block, the second limiting block, the third limiting block, and the fourth limiting block all have two rectangular grooves; the screw passes the rectangular groove and is fixed in on the corresponding screw hole of first vibration board 3, first stopper, second stopper, third stopper, fourth stopper all with form a draw-in groove between the first vibration board 3 this moment, and the draw-in groove that forms is used for fixing the circuit board that awaits measuring.
Further, when circuit boards to be tested with different widths need to be installed, the screws are screwed up after the first limiting block and the second limiting block are moved to the positions matched with the circuit boards to be tested in a manual mode of loosening the screws on the first limiting block and the second limiting block. Rectangular grooves are processed on the first limiting block and the second limiting block, and circuit boards with different widths can be fixed by changing the left-right distance of the first limiting block and the second limiting block. When circuit boards to be tested with different lengths need to be installed, screws are screwed up after the third limiting block and the fourth limiting block are moved to positions matched with the circuit boards to be tested manually in a mode of loosening the screws on the third limiting block and the fourth limiting block. Rectangular grooves are processed on the third limiting block and the fourth limiting block, and circuit boards with different lengths can be fixed by changing the vertical distance between the third limiting block and the fourth limiting block. The circuit boards with different sizes can be fixed by adjusting the left-right distance of the first limiting block and the second limiting block and the up-down distance of the third limiting block and the fourth limiting block.
In this embodiment, as shown in fig. 3, the annular limiting block is fixed to the first vibrating plate through a screw, and then a slot can be formed to fix and position the circuit board. First stopper, second stopper, third stopper, fourth stopper and annular stopper with first vibration board can form the draw-in groove after assembling, and fixed circuit board that can be fine prevents that this circuit board from rocking. The circuit boards with different sizes can be fixed. In this embodiment, all the parts are made of non-conductive pom (also called "saxigang") material, which can play an insulating role on the premise of ensuring mechanical properties, and the screws for fixing all the parts are preferably M4 screws.
In this embodiment, as shown in fig. 4, the predetermined depth of the first annular groove 31a and the second annular groove 31b is a depth that can prevent the nut of the screw from protruding out of the mounting surface, and prevent the nut from conducting electricity with the circuit board and scratching the circuit board.
In this embodiment, the third annular groove 32a and the fourth annular groove 32b are both fixed on the vibration table by two M8 screws. In the vibration test, the first vibration plate 3 with the circuit board mounted thereon is fixed to the vibration table by four M8 screws in the third annular groove 32a and the fourth annular groove 32 b. After the vibration test in one direction is performed, the vibration table and the circuit board do not need to be replaced, only one screw on the third annular groove 32a and the fourth annular groove 32b needs to be detached, the first vibration plate 3 is rotated by 90 degrees along the groove path of the third annular groove and the fourth annular groove, the free rotation of the first vibration plate 3 in the horizontal direction and the vertical direction is realized, the detached screws are assembled in the third annular groove 32a and the fourth annular groove 32b respectively, and then the first vibration plate 3 with the circuit board is fixed on the vibration table to perform the vibration test in the other direction. Therefore, the vibration test device can complete the vibration of the circuit board in two directions under the condition that the circuit board and the vibration device are not required to be disassembled and assembled, has a simple design structure, is convenient to operate, and can complete the vibration test of the circuit board in two directions with high efficiency.
In the present embodiment, as shown in fig. 5, the first vibration plate to which the circuit board is attached to the second vibration by screw coupling after the vibration test in both directions is completed, and the two reinforcing ribs are also attached to the first vibration plate and the second vibration by screw coupling. The second vibration and reinforcing ribs are made of the same pom (also called Saikang) material as the first vibration plate, and the second vibration and reinforcing ribs have a good insulation effect. The purpose of installation strengthening rib is when guaranteeing to carry out the vibration test, and the rigidity of whole device satisfies the design requirement, avoids first vibration board to produce great deformation. The second vibration plate was fixed to the same vibration table by four M8 screws, and a vibration test in the third direction was performed. Therefore, vibration tests of the circuit board in three directions are realized.
A three-axis vibration method capable of fixing circuit boards of various sizes using the three-axis vibration apparatus capable of fixing circuit boards of various sizes as described above according to an embodiment of the present invention is explained as follows, the method including the steps of:
step S101: adjusting a first limiting block, a second limiting block, a third limiting block, a fourth limiting block and an annular limiting block of the first vibrating plate to fix the circuit board to be tested; testing the circuit board to be tested in the horizontal direction and the vertical direction;
step S102: and assembling the second vibrating plate on the first vibrating plate through the reinforcing ribs and the screws, assembling the second vibrating plate with the first vibrating plate on a vibrating table, and testing the direction of the circuit board to be tested, which is vertical to the surface of the circuit board.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (6)
1. A triaxial vibration apparatus capable of fixing circuit boards of various sizes, the triaxial vibration apparatus comprising:
the vibrating plate comprises a first vibrating plate (3), wherein a first limiting block (1a) and a second limiting block (1b) which are positioned at the same horizontal position are arranged on the first vibrating plate (3); the first limiting block (1a) and the second limiting block (1b) can be fixed on the first vibrating plate (3) through screws; the first limiting block (1a) and the second limiting block (1b) are used for positioning and fixing the circuit board to be tested in the width direction;
the first vibrating plate (3) is provided with a third limiting block (2a) and a fourth limiting block (2b) which are perpendicular to the first limiting block (1a) and the second limiting block (1b) and are positioned at the same horizontal position; the third limiting block (2a) and the fourth limiting block (2b) can be fixed on the first vibrating plate (3) through screws; the third limiting block (2a) and the fourth limiting block (2b) are used for positioning and fixing the circuit board to be tested in the length direction;
the first vibrating plate (3) is provided with an annular limiting block (4), and the annular limiting block can be fixed on the first vibrating plate (3) through three screws and is used for limiting and fixing the circuit board to be tested in the length direction;
the first vibration plate (3) is provided with two centrosymmetric annular grooves with a preset depth, namely a first annular groove (31a) and a second annular groove (31b), and the annular angles of the first annular groove (31a) and the second annular groove (31b) are 90 degrees;
a third annular groove (32a) is formed in the first annular groove (31a), the third annular groove (32a) is concentric and at the same angle with the first annular groove (31a), and the sum of the depth of the third annular groove (32a) and the depth of the first annular groove (31a) is the thickness of the first vibration plate (3);
a fourth annular groove (32b) is formed in the second annular groove (31b), the fourth annular groove (32b) is concentric and at the same angle with the second annular groove (31b), and the sum of the depth of the fourth annular groove (32b) and the depth of the second annular groove (31b) is the thickness of the first vibration plate (3);
the second vibrating plate is provided with a mounting hole corresponding to the first vibrating plate (3) and a mounting hole corresponding to the vibrating table, and the second vibrating plate is assembled on the first vibrating plate which is fixed with a circuit board to be tested and completes vibration tests in the horizontal and vertical directions through the mounting holes; and then the second vibrating plate which is already assembled with the first vibrating plate is assembled on the vibrating table through the mounting hole corresponding to the vibrating table.
2. The triaxial vibration device capable of fixing circuit boards of various sizes as claimed in claim 1, wherein the triaxial vibration device capable of fixing circuit boards of various sizes comprises two reinforcing ribs, threaded holes are formed on end surfaces of the reinforcing ribs contacting with the first vibration plate and the second vibration plate, and countersunk holes are formed at corresponding positions of the two vibration plates; the two vibrating plates and the reinforcing ribs can be fixed together by screw connection.
3. The triaxial vibrating device capable of fixing circuit boards of various sizes according to claim 2, wherein the first, second, third and fourth stoppers each have two rectangular grooves; the screw passes the rectangular groove and is fixed in on the corresponding screw hole of first vibration board 3, first stopper, second stopper, third stopper, fourth stopper all with form a draw-in groove between the first vibration board 3 this moment, and the draw-in groove that forms is used for fixing the circuit board that awaits measuring.
4. The triaxial vibrating device capable of fixing circuit boards of various sizes as claimed in claim 3, wherein the first, second, third and fourth stoppers are made of non-conductive steel material.
5. The triaxial vibration apparatus capable of fixing circuit boards of various sizes as claimed in claim 4, wherein in performing the vibration test, the first vibration plate (3) with the circuit board mounted thereon is fixed to the vibration table by four M8 screws in said third and fourth annular grooves (32a, 32 b); after the vibration test in one direction is carried out, the vibration table does not need to be replaced and the circuit board does not need to be detached, only the screws on the third annular groove (32a) and the fourth annular groove (32b) need to be detached, the first vibration plate (3) is rotated by 90 degrees along the groove paths of the third annular groove and the fourth annular groove, the free rotation of the first vibration plate (3) in the horizontal direction and the vertical direction is realized, the detached screws are assembled in the third annular groove (32a) and the fourth annular groove (32b) respectively, and then the first vibration plate (3) provided with the circuit board is fixed on the vibration table to carry out the vibration test in the other direction.
6. A triaxial vibration method capable of fixing circuit boards of various sizes using the triaxial vibration apparatus capable of fixing circuit boards of various sizes according to any one of claims 1 to 5, the method comprising the steps of:
step S101: adjusting a first limiting block, a second limiting block, a third limiting block, a fourth limiting block and an annular limiting block of the first vibrating plate to fix the circuit board to be tested; testing the circuit board to be tested in the horizontal direction and the vertical direction;
step S102: and assembling the second vibrating plate on the first vibrating plate through the reinforcing ribs and the screws, assembling the second vibrating plate with the first vibrating plate on a vibrating table, and testing the direction of the circuit board to be tested, which is vertical to the surface of the circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111141969.7A CN113916479B (en) | 2021-09-28 | 2021-09-28 | Triaxial vibration device and method capable of fixing circuit boards with various sizes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111141969.7A CN113916479B (en) | 2021-09-28 | 2021-09-28 | Triaxial vibration device and method capable of fixing circuit boards with various sizes |
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| Publication Number | Publication Date |
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| CN113916479A true CN113916479A (en) | 2022-01-11 |
| CN113916479B CN113916479B (en) | 2024-04-12 |
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| CN202111141969.7A Active CN113916479B (en) | 2021-09-28 | 2021-09-28 | Triaxial vibration device and method capable of fixing circuit boards with various sizes |
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| US20150007662A1 (en) * | 2013-07-02 | 2015-01-08 | Texas Instruments Incorporated | Fixture for test circuit board reliability testing |
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| CN110905479A (en) * | 2019-09-10 | 2020-03-24 | 西南石油大学 | Install in inside triaxial vibration measuring device of drill bit |
| CN210834072U (en) * | 2019-11-13 | 2020-06-23 | 广州兴森快捷电路科技有限公司 | Clamping assembly, clamping mechanism and vibration test device |
| CN211121865U (en) * | 2019-12-30 | 2020-07-28 | 长沙万为机器人有限公司 | Universal circuit board clamp for vibration test board |
-
2021
- 2021-09-28 CN CN202111141969.7A patent/CN113916479B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5435533A (en) * | 1993-09-10 | 1995-07-25 | Screening Systems, Inc. | Adjustable clamping fixture for vibrating various sized circuit boards |
| JP2007205846A (en) * | 2006-02-01 | 2007-08-16 | Kitagawa Ind Co Ltd | Three-dimensional shaking table for vibration exhibition |
| CN201892613U (en) * | 2010-11-29 | 2011-07-06 | 宁波菲仕运动控制技术有限公司 | Vibration test equipment of printed circuit boards |
| US20150007662A1 (en) * | 2013-07-02 | 2015-01-08 | Texas Instruments Incorporated | Fixture for test circuit board reliability testing |
| CN207730414U (en) * | 2017-12-26 | 2018-08-14 | 西安创尼信息科技有限公司 | Vibration test tooling |
| CN208334571U (en) * | 2018-07-03 | 2019-01-04 | 中车株洲电力机车研究所有限公司 | A kind of Reliability of PCB test fixture |
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| CN110905479A (en) * | 2019-09-10 | 2020-03-24 | 西南石油大学 | Install in inside triaxial vibration measuring device of drill bit |
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| CN211121865U (en) * | 2019-12-30 | 2020-07-28 | 长沙万为机器人有限公司 | Universal circuit board clamp for vibration test board |
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| CN113916479B (en) | 2024-04-12 |
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