CN111024345A - Improve frock subassembly, vibration test anchor clamps of vibration test anchor clamps commonality - Google Patents
Improve frock subassembly, vibration test anchor clamps of vibration test anchor clamps commonality Download PDFInfo
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- CN111024345A CN111024345A CN201911279025.9A CN201911279025A CN111024345A CN 111024345 A CN111024345 A CN 111024345A CN 201911279025 A CN201911279025 A CN 201911279025A CN 111024345 A CN111024345 A CN 111024345A
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- 238000012360 testing method Methods 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000011161 development Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 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
- G01M7/027—Specimen mounting arrangements, e.g. table head adapters
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Abstract
In order to enable the test fixture to meet the requirement of universality, the invention provides a tool assembly and a vibration test fixture for improving the universality of the vibration test fixture. The tool assembly comprises three tool units; the first tool unit comprises a plurality of first tools, the second tool unit comprises a plurality of second tools, and the third tool unit comprises a plurality of third tools; the first tool and the third tool are identical in structure and different in size; the single tool is provided with a countersunk through hole, and the external shape of the single tool is matched with the internal shape of the largest-specification countersunk hole of the vibration test fixture; first frock size: the diameter of the screw head of M8mm is more than d1 and less than 25.5mm, the diameter of the screw head of M8mm is more than d2 and less than 17.0mm, and the height of the screw head of M8mm is more than d2 and less than 17.0 mm; the size of the second tool is as follows: the diameter of the screw head of M10mm is more than d1 and less than 25.5mm, the diameter of the screw head of 10.0mm is more than d2 and less than 17.0mm, and the height of the screw head of M10mm is more than d2 and less than 17.0 mm; the third tool size: the diameter of the screw head of M12mm is more than d1 and less than 25.5mm, the diameter of the screw head of M12mm is more than d2 and less than 17.0mm, the height of the screw head of M12mm is more than d2 and less than 17.0 mm; d1 is the large hole inner diameter of the countersunk head through hole, d2 is the small hole inner diameter, and d3 is the large hole height.
Description
Technical Field
The invention belongs to the technical field of vibration tests, and relates to a tool assembly for improving the universality of a vibration test clamp, and the vibration test clamp adopting the tool assembly.
Background
The vibration test becomes an important means for verifying the reliability of aerospace, aviation, ship, military ground and civil equipment, and is mainly used for verifying the adaptability of the whole equipment, parts and the like under expected or specified vibration conditions, checking whether the equipment can normally work under the vibration conditions and meeting the use requirements.
At present, vibration tests are mainly carried out on an electromagnetic vibration table, and the working principle of the vibration tests is that a constant magnetic field and a coil which is positioned in the magnetic field and is provided with a certain alternating current interact with each other, so that a certain excitation force is generated. When the equipment is subjected to a vibration test, the tested equipment is generally required to be rigidly connected with the vibration table through a test fixture. The test fixture is used as a mechanical transition piece, and not only needs to provide a mechanical interface matched with equipment, but also needs to provide a mechanical interface matched with a vibration table top, so that the equipment and the vibration table can be rigidly connected through screws (generally using hexagon socket head cap screws).
The mounting holes of the table top of the vibrating table are threaded holes, the diameters of the threaded holes of the vibrating table are different in size, specifications such as phi 8mm, phi 10mm, phi 12mm and phi 16mm are common, and in order to ensure the rigidity requirement of the connection of the test fixture and the table top of the vibrating table, countersunk holes of phi 9mm, phi 11mm, phi 13.5mm and phi 17.5mm are generally designed in a corresponding mode on the mechanical interface of the test fixture, namely the countersunk holes of different diameters are designed on the vibrating table of different threaded hole diameters by the test fixture.
At the different stages of equipment development process, often need carry out vibration test many times, and the shaking table is as a comparatively scarce resource, and not the shaking table that can both coordinate the same screw hole aperture at every turn experimental, this just needs to process the test fixture in two to three or even more different counter sink apertures for same equipment design, need invest more manpower, material resources like this, improved equipment development cost greatly, especially to the very nervous space equipment of development cycle, design a plurality of test fixture of processing often can influence the development progress. In view of the above circumstances, it is an urgent need to solve the problem of designing a universal test fixture or enabling a test fixture to have universal functions by a device, such as a device developer and a vibration test researcher.
Disclosure of Invention
In order to enable the test fixture to meet the requirement of universality and reduce the equipment development cost, the invention provides the tool assembly and the vibration test fixture for improving the universality of the vibration test fixture, so that only one test fixture with the hole diameter of the countersunk hole can be installed on vibration tables with different hole diameters on the premise of not changing the existing test fixture, and the requirement of the universality is met.
The technical scheme of the invention is as follows:
the utility model provides an improve frock subassembly of vibration test anchor clamps commonality which the special character lies in: the device comprises a first tool unit, a second tool unit and a third tool unit;
the first tool unit comprises a plurality of mutually independent first tools, the second tool unit comprises a plurality of mutually independent second tools, and the third tool unit comprises a plurality of mutually independent third tools;
the first tool, the second tool and the third tool are identical in structure and different in size;
a countersunk through hole is formed in each tool, and the external shape of each tool is matched with the internal shape of the largest-specification countersunk hole of the vibration test fixture;
the inner diameter of a large hole of the countersunk head through hole on a single tool is defined as d1, the inner diameter of a small hole is defined as d2, and the height of the large hole is defined as d3, then
Countersunk head through-hole size does on first frock: the diameter of the screw head of M8mm is more than d1 and less than 25.5mm, the diameter of the screw head of M8mm is more than d2 and less than 17.0mm, and the height of the screw head of M8mm is more than d2 and less than 17.0 mm;
the size of the countersunk head through hole on the second tool is as follows: the diameter of the screw head of M10mm is more than d1 and less than 25.5mm, the diameter of the screw head of 10.0mm is more than d2 and less than 17.0mm, and the height of the screw head of M10mm is more than d2 and less than 17.0 mm;
the size of the countersunk head through hole on the third tool is as follows: the diameter of the screw head of M12mm is less than d1 and less than 25.5mm, the diameter of the screw head of M12mm is less than d2 and less than 17.0mm, and the height of the screw head of M12mm is less than d2 and less than 17.0 mm.
Preferably, the size of the countersunk head through hole on the first tool is as follows: d 1-15.0 mm, d 2-9.0 mm, d 3-9.0 mm; the size of countersunk head through hole on the second tool is: d 1-18.0 mm, d 2-11.0 mm, d 3-11.0 mm; the size of the countersunk head through hole on the third tool is as follows: d 1-20.0 mm, d 2-13.0 mm and d 3-13.5 mm.
Preferably, the first tool, the second tool and the third tool are made of aluminum or steel.
The invention also provides a vibration test fixture which is provided with a plurality of counter bores; it is characterized in that: the tool assembly is further included; the tool assembly is matched with the plurality of counter bores for use.
The invention has the advantages that:
1. the invention provides a new idea for designing a universal fixture for a vibration test, and the tool assembly is matched with the test fixture on the premise of not changing any size of the conventional test fixture, so that the bore diameter of a counter bore of the test fixture is variable, and the universal purpose is achieved.
2. The tool assembly disclosed by the invention is small in size, light in weight, simple in design and processing, low in price, reliable in structure, simple and rapid in installation, and capable of being repeatedly used continuously, vibration test and equipment development cost can be greatly reduced after the tool assembly is applied, the vibration test and equipment development period is greatly shortened, the task progress is guaranteed, and the tool assembly has a strong practical value for the development of aerospace, aviation, ships and ground military and civil equipment, especially for the development of aerospace equipment, and is worth popularizing nationwide.
Drawings
FIG. 1 is a schematic view of the structure of a single tool in the tool assembly of the present invention.
Fig. 2 is a schematic diagram of a phi 17.5mm counter bore on a conventional vibration test fixture.
FIG. 3 is a schematic view of a single tool in the tool assembly of the present invention engaged with a counterbore in a vibration testing fixture.
Description of reference numerals: 1-countersunk through hole, 2-countersunk hole, 3-second tool and 4-vibration test fixture.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Although the diameters of threaded holes of the table top of the vibration table are different, the hole pitch is only one specification (most of threaded holes of the table top of the vibration table are all 100mm), so that the hole pitch factor of the threaded holes of the table top of the vibration table does not need to be considered when the tool assembly is designed, and the problem of adapting to the diameters of different threaded holes only needs to be considered.
The tool assembly comprises a first tool unit, a second tool unit and a third tool unit;
the first tool unit comprises a plurality of mutually independent first tools, the second tool unit comprises a plurality of mutually independent second tools, and the third tool unit comprises a plurality of mutually independent third tools;
the first tool, the second tool and the third tool are identical in structure and different in size; the first tool, the second tool and the third tool can be made of materials such as aluminum, steel or stainless steel, and can be freely selected according to different requirements in practice.
The structure of a single tool is shown in figure 1, and in consideration of universality, the external shape and the size of the tool are matched with the internal shape of a counter sink 2 (shown in figure 2) with the maximum specification of phi 17.5mm in the specification of the counter sink of the test fixture, and the inside of the tool is provided with a counter sink through hole 1; the inner diameter of a large hole of a countersunk head through hole 1 on a single tool is defined as d1, the inner diameter of a small hole is defined as d2, and the height of the large hole is defined as d3, then the sizes of the countersunk head through holes 1 corresponding to the first tool, the second tool and the third tool are shown in the following table:
table 1 tooling assembly dimensions table unit: mm is
| Corresponding to the specification of the screw | M8 | M10 | M12 |
| Countersunk through hole size | First tool | Second tool | Third tool |
| d1 | 15.0 | 18.0 | 20.0 |
| d2 | 9.0 | 11.0 | 13.0 |
| d3 | 9.0 | 11.0 | 13.5 |
When the vibration test fixture is installed on the table top of a vibration table with a threaded hole of phi 16mm, the vibration test fixture and the table top can be directly fastened by using an M16mm screw without a tool assembly;
when the vibration test fixture is installed on the table top of the vibration table with the threaded holes with the specifications of phi 8mm, phi 10mm and phi 12mm, the fixture with the corresponding size in the fixture assembly is installed in the countersunk hole of the vibration test fixture, and then the fixture is fastened by the screws with the corresponding specifications, as shown in figure 3.
The following briefly introduces an implementation method for rigidly connecting a vibration test fixture with a countersunk hole with the diameter of phi 17.5mm and the table top of a vibration table by using the tool assembly of the invention and taking the threaded hole with the diameter of phi 10mm of the table top of the vibration table as an example:
1. placing the vibration test fixture 4 on the table top of the vibration table, and roughly aligning a counter bore on the vibration test fixture 4 with a threaded hole on the table top of the vibration table;
2. selecting a second tool 3 with d1 being 18.0mm, d2 being 11.0mm and d3 being 11.0mm, and sequentially placing the second tool 3 into each countersunk hole of the vibration test fixture 4;
3. sequentially placing M10mm socket head cap screws (not shown in the figure) into the second tool 3;
4. adjusting the position of the vibration test clamp 4 to align the M10mm socket head cap screw with a threaded hole on the table top of the vibration table;
5. and (3) tightening each M10mm socket head cap screw to a proper torque by using a socket head cap wrench to complete the rigid connection of the vibration test clamp and the vibration table top.
Claims (4)
1. The utility model provides an improve frock subassembly of vibration test anchor clamps commonality which characterized in that: the device comprises a first tool unit, a second tool unit and a third tool unit;
the first tool unit comprises a plurality of mutually independent first tools, the second tool unit comprises a plurality of mutually independent second tools, and the third tool unit comprises a plurality of mutually independent third tools;
the first tool, the second tool and the third tool are identical in structure and different in size;
a countersunk through hole is formed in each tool, and the external shape of each tool is matched with the internal shape of the largest-specification countersunk hole of the vibration test fixture;
the inner diameter of a large hole of the countersunk head through hole on a single tool is defined as d1, the inner diameter of a small hole is defined as d2, and the height of the large hole is defined as d3, then
Countersunk head through-hole size does on first frock: the diameter of the screw head of M8mm is more than d1 and less than 25.5mm, the diameter of the screw head of M8mm is more than d2 and less than 17.0mm, and the height of the screw head of M8mm is more than d2 and less than 17.0 mm;
the size of the countersunk head through hole on the second tool is as follows: the diameter of the screw head of M10mm is more than d1 and less than 25.5mm, the diameter of the screw head of 10.0mm is more than d2 and less than 17.0mm, and the height of the screw head of M10mm is more than d2 and less than 17.0 mm;
the size of the countersunk head through hole on the third tool is as follows: the diameter of the screw head of M12mm is less than d1 and less than 25.5mm, the diameter of the screw head of M12mm is less than d2 and less than 17.0mm, and the height of the screw head of M12mm is less than d2 and less than 17.0 mm.
2. The tool assembly for improving the universality of the vibration test fixture according to claim 1, is characterized in that: the size of countersunk head through hole on the first tool is: d 1-15.0 mm, d 2-9.0 mm, d 3-9.0 mm;
the size of countersunk head through hole on the second tool is: d 1-18.0 mm, d 2-11.0 mm, d 3-11.0 mm;
the size of the countersunk head through hole on the third tool is as follows: d 1-20.0 mm, d 2-13.0 mm and d 3-13.5 mm.
3. The tool assembly for improving the universality of the vibration test fixture according to claim 1 or 2, is characterized in that: the first tool, the second tool and the third tool are made of aluminum or steel.
4. A vibration test fixture has a plurality of counter bores; the method is characterized in that: further comprising the tooling assembly of claim 1, 2 or 3; the tool assembly is matched with the plurality of counter bores for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911279025.9A CN111024345A (en) | 2019-12-13 | 2019-12-13 | Improve frock subassembly, vibration test anchor clamps of vibration test anchor clamps commonality |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911279025.9A CN111024345A (en) | 2019-12-13 | 2019-12-13 | Improve frock subassembly, vibration test anchor clamps of vibration test anchor clamps commonality |
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| CN111024345A true CN111024345A (en) | 2020-04-17 |
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| CN201911279025.9A Pending CN111024345A (en) | 2019-12-13 | 2019-12-13 | Improve frock subassembly, vibration test anchor clamps of vibration test anchor clamps commonality |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008128665A (en) * | 2006-11-16 | 2008-06-05 | Fujitsu Ten Ltd | Vibration test method, vibration test auxiliary device, and vibration test system |
| CN201130086Y (en) * | 2007-12-18 | 2008-10-08 | 上海航天精密机械研究所 | Vibration test general-purpose connecting platform |
| CN107655646A (en) * | 2017-09-19 | 2018-02-02 | 北京特种机械研究所 | A kind of rice font test fixture suitable for different structure product vibration test |
| CN211373982U (en) * | 2019-12-13 | 2020-08-28 | 中国科学院西安光学精密机械研究所 | Improve frock subassembly, vibration test anchor clamps of vibration test anchor clamps commonality |
-
2019
- 2019-12-13 CN CN201911279025.9A patent/CN111024345A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008128665A (en) * | 2006-11-16 | 2008-06-05 | Fujitsu Ten Ltd | Vibration test method, vibration test auxiliary device, and vibration test system |
| CN201130086Y (en) * | 2007-12-18 | 2008-10-08 | 上海航天精密机械研究所 | Vibration test general-purpose connecting platform |
| CN107655646A (en) * | 2017-09-19 | 2018-02-02 | 北京特种机械研究所 | A kind of rice font test fixture suitable for different structure product vibration test |
| CN211373982U (en) * | 2019-12-13 | 2020-08-28 | 中国科学院西安光学精密机械研究所 | Improve frock subassembly, vibration test anchor clamps of vibration test anchor clamps commonality |
Non-Patent Citations (1)
| Title |
|---|
| 魏英魁;张晓颖;毕京丹;卫国;: "某型号导引头振动试验夹具的设计与实践", 强度与环境, no. 02, 15 April 2015 (2015-04-15), pages 9 * |
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