CN106289687A - A kind of electric vibration table general switching vibration test fixture - Google Patents
A kind of electric vibration table general switching vibration test fixture Download PDFInfo
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- CN106289687A CN106289687A CN201510348873.6A CN201510348873A CN106289687A CN 106289687 A CN106289687 A CN 106289687A CN 201510348873 A CN201510348873 A CN 201510348873A CN 106289687 A CN106289687 A CN 106289687A
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Abstract
The invention belongs to vibration environment technical field of measurement and test, be specifically related to a kind of electric vibration table general switching vibration test fixture.The electric vibration table general switching vibration test fixture of the present invention, it includes installing plate and back structures；The front of installing plate is provided with 4 T-slots, for connecting with test products to be measured；4 described T-slots are additionally provided with installing hole, the surface of described installing plate is also inlaid with M12 steel bushing and M20 steel bushing.The present invention solve the profile of vibration test product, mounting means diversity big, cause some test products cannot normally and vibration platen install problem, it is capable of the connection between vibration test product and the vibration platen of different profile, mounting means, accept a series of vibration test specimen vibration test, have certain versatility；And fixture fundamental frequency is higher, it is suitable for vibration test spectral range wide, electric vibration table output can be effectively reduced simultaneously, there is stronger practicality.
Description
Technical field
The invention belongs to vibration environment technical field of measurement and test, be specifically related to a kind of electric vibration table general switching vibration test fixture.
Background technology
In economy, today of technology high-speed development, the quality of product increasingly obtains the attention of people, and people more pay attention to the environmental reliability problem of product.Vibration mechanics environment is the aircraft such as rocket, guided missile, aircraft；The mechanical environment that the products such as wind power equipment, rail-based conveyor system, electronic product under arms or are most commonly encountered during use.
By vibration rig, testpieces is applied vibration environment load, fully expose instrument and equipment or product defect in dynamic environmental test, determine they bearing capacitys to vibration environment.Only through vibration environment test, could intactly examine the reliability of product structure and for the adaptability of vibration environment, vibration test is the important component part of examination production reliability test.
In vibration environment test test process, the diversity such as the profile of vibration test product, mounting means is relatively big, if not using switching fixture, test specimen just cannot be carried out normal mounting with vibration stage body, then cannot be carried out follow-up vibration test.
Summary of the invention
The technical issues that need to address of the present invention are: the profile of vibration test product, mounting means diversity big, cause some test products cannot normally and the problem of vibration platen installation.
Technical scheme is as described below:
A kind of electric vibration table general switching vibration test fixture, it includes installing plate and back structures；Described installing plate profile is circular flat board, and centered by the center of circle of installing plate, through-thickness offers lightening hole, is used for alleviating weight, and described lightening hole is manhole, and extends to back structures；The front of installing plate is provided with 4 T-slots, for connecting with test products to be measured；4 described T-slots are additionally provided with installing hole, for realizing the connection of laboratory holder and electric vibration table main body；The surface of described installing plate is also inlaid with M12 steel bushing and M20 steel bushing.
Preferably, 4 described T-slots, in the radially even distribution in the surface of installing plate, form " rice " font and arrange；
Preferably, described installing hole is manhole, and runs through back structures, is provided with 6 installing holes on T-slot every described, with the central shaft of described lightening hole as axis of symmetry, described lightening hole lateral symmetry be distributed；All of installing hole on the surface of the installation base in interior, in, outer three layers of distribution, and be positioned at, in, outer three distribution circle on, described three distribution circle common centers of circle；
Preferably, described M12 steel bushing is distributed on the surface of described installing plate as follows:
Line on the basis of T-slot place straight line described in any bar, draws the parallel lines of this datum line equally spacedly in the both sides of datum line；Then it is new datum line with another T-slot place vertical with selected T-slot at straight line, the parallel lines of this new datum line are drawn equally spacedly in the both sides of this datum line, the spacing drawn parallel lines for twice is identical, can form several squares the most on the surface of the installation base, described M12 steel bushing is embedded in described foursquare apex；
Preferably, described M20 steel bushing is distributed on the surface of described installing plate as follows: described M20 steel bushing is embedded in the edge of installing plate, is distributed in inside and outside two-layer, the common distribution circle of M20 steel bushing of all internal layers, the M20 steel bushing of all outer layers another distribution circle altogether, the two distribution concyclic hearts of circle；Line on the basis of T-slot place straight line described in any bar, turning clockwise with the intersection point of this datum line with described lightening hole central axis for center of rotation, described M20 steel bushing is embedded in when datum line rotates to 11.25 °, 33.75 °, 56.25 °, 78.75 °, 101.25 °, 123.75 °, 146.25 ° and 168.75 ° and is distributed round point of intersection respectively at inside and outside；
Preferably, described back structures is arranged at the back side of installing plate, and it has 8 identical reinforcements and 8 identical depressions；Described reinforcement is radially disposed at the described T-slot projected position at the installing plate back side along installing plate, and described reinforcement cross section in a thickness direction is zhou duicheng tuxing, and is gradually reduced along the thickness of installing plate reinforcement the most from the inside to the outside；Described depression is the cambered surface of symmetrical shape；Arranging depression between two adjacent reinforcements has a depression, the described axis of symmetry in two adjacent reinforcement cross sections to be in a thickness direction 45 ° of angle；
The invention have the benefit that
(1) fixture of the present invention is capable of the connection between vibration test product and the vibration platen of different profile, mounting means, accepts a series of vibration test specimen vibration test, has certain versatility；
(2) fixture fundamental frequency is higher, is suitable for vibration test spectral range wide, can effectively reduce electric vibration table output simultaneously, have stronger practicality.
Accompanying drawing explanation
Fig. 1 is the outline drawing of the test fixture of the present invention；
Fig. 2 is the installing plate appearance schematic diagram of test fixture of the present invention；
Fig. 3 is the installing plate front view of test fixture of the present invention；
Fig. 4 is the back structures schematic diagram of test fixture of the present invention；
Fig. 5 is the side view of test fixture of the present invention；
Fig. 6 is the test fixture installment state figure with 16T vibration table stage body of the present invention；
Fig. 7 is the test fixture installment state figure with 16T vibration table slide unit of the present invention；
Wherein, 1-installing plate, 2-back structures, 11-T shape groove, 12-installing hole, 13-M12 steel bushing, 14-M20 steel bushing, 21-reinforcement, 22-caves in.
Detailed description of the invention
With embodiment, a kind of electric vibration table general switching vibration test fixture of the present invention is described in detail below in conjunction with the accompanying drawings.
16T electric vibration table main body is mainly made up of Chui Tai and slide unit, and the platform table top that hangs down and slide unit table top are distributed M12 steel bushing, are attached with test products by steel bushing.
Owing to vibration test specimen connection dimension differs, the most directly can not be attached by steel bushing, need to design 16T electric vibration table general switching vibration test fixture, described vibration test fixture is a transition piece connected, being again a force transferring part, it should meet following requirement:
1, can realize hanging down the connection of platform M12 steel bushing with 16T electric vibration table, fixture upper surface possesses connecting hole or link slot simultaneously, it is possible to the connection realizing with vibrating test specimen；
2, the connection with 16T electric vibration table slide unit M12 steel bushing can be realized；
3, fundamental frequency wants height, more than 450Hz, meets difference vibration test specimen vibration test spectral range requirement, reduces the output of 16T electric vibration table.
For ensureing vibration test fixture fundamental frequency height as far as possible, on the basis of Experience Design, carry out FEM calculation optimization design, improved the first natural frequency of fixture by constantly change switching fixture overall dimensions and material distribution.
On the premise of ensureing the use function of fixture and meeting fundamental frequency, use variable cross-section design to reduce fixture quality as far as possible.
By analyzing the relation of each order mode state and clamp structure, the calculation optimization layout of the size at each position, reinforcement, installing hole and T-slot, sum up rational topology layout, structure optimization has been repeated until Pass Test requirement.
Electric vibration table general switching vibration test fixture as shown in Figure 1, it includes installing plate 1 and back structures 2.
As shown in Figures 2 and 3, its profile is circular flat board to described installing plate 1, and centered by the center of circle of installing plate 1, through-thickness offers lightening hole, is used for alleviating weight, and described lightening hole is manhole, and extends to back structures 2.The front of installing plate 1 is provided with 4 T-slots 11, for connecting with test products to be measured.Article 4, described T-slot 11, in the radially even distribution in the surface of installing plate 1, forms " rice " font and arranges.4 described T-slots 11 are additionally provided with installing hole 12, for realizing the connection of laboratory holder and electric vibration table main body.Described installing hole 12 is manhole, and runs through back structures 2, is provided with 6 installing holes 12 on T-slot every described, with the central shaft of described lightening hole as axis of symmetry, described lightening hole lateral symmetry be distributed.All of installing hole 12 on the surface of installing plate 1 in interior, in, outer three layers of distribution, and be positioned at, in, outer three distribution circle on, described three distribution circle common centers of circle.
Also being inlaid with M12 steel bushing on the surface of described installing plate 1, M12 steel bushing mode as shown in Figure 3 on installing plate 1 is distributed:
Line on the basis of the straight line of T-slot described in any bar 11 place, draws the parallel lines of this datum line equally spacedly in the both sides of datum line.Then it is new datum line with another T-slot 11 place vertical with selected T-slot 11 at straight line, the parallel lines of this new datum line are drawn equally spacedly in the both sides of this datum line, the spacing drawn parallel lines for twice is identical, then can form several squares on the surface of installing plate 1, described M12 steel bushing is embedded in described foursquare apex.
The surface of described installing plate 1 is also inlaid with M20 steel bushing, M20 steel bushing mode as shown in Figure 4 on installing plate 1 is distributed: described M20 steel bushing is embedded in the edge of installing plate 1, it is distributed in inside and outside two-layer, the common distribution circle of M20 steel bushing of all internal layers, the M20 steel bushing of all outer layers another distribution circle altogether, the two distribution concyclic hearts of circle.Line on the basis of the straight line of T-slot described in any bar 11 place, turning clockwise with the intersection point of this datum line with described lightening hole central axis for center of rotation, described M20 steel bushing is embedded in when datum line rotates to 11.25 °, 33.75 °, 56.25 °, 78.75 °, 101.25 °, 123.75 °, 146.25 ° and 168.75 ° and is distributed round point of intersection respectively at inside and outside.
As shown in Figure 4,5, back structures 2 is arranged at the back side of installing plate 1, and it has 8 identical reinforcements 21 and 8 identical depressions 22.Described reinforcement 21 is radially disposed at the described T-slot 11 projected position at installing plate 1 back side along installing plate 1, and described reinforcement 21 cross section in a thickness direction is zhou duicheng tuxing, and is gradually reduced along the thickness of installing plate 1 reinforcement 21 the most from the inside to the outside.Described depression 22 is the cambered surface of symmetrical shape.Arranging depression between two adjacent reinforcements 21 and have a depression 22, the described axis of symmetry in two adjacent reinforcement 21 cross sections in a thickness direction is 45 ° of angle.
The using method of the electric vibration table general switching vibration test fixture of the present invention is as shown in Figure 6,7, product to be tested passes through T-slot, or coordinated with M12 or M20 steel bushing by screw, being fixed on fixture, then fixture is again by being fixed on the vertical platform of vibration or vibration slide unit through the screw of installing hole 12.
Claims (6)
1. an electric vibration table general switching vibration test fixture, it includes installing plate (1) and back structures (2)；It is characterized in that: described installing plate (1) profile is circular flat board, centered by the center of circle of installing plate (1), through-thickness offers lightening hole, is used for alleviating weight, described lightening hole is manhole, and extends to back structures (2)；The front of installing plate (1) is provided with 4 T-slots (11), for connecting with test products to be measured；4 described T-slots (11) are additionally provided with installing hole (12), for realizing the connection of laboratory holder and electric vibration table main body；The surface of described installing plate (1) is also inlaid with M12 steel bushing (13) and M20 steel bushing (14).
2. electric vibration table general switching vibration test fixture as claimed in claim 1, it is characterised in that: 4 described T-slots (11), in the radially even distribution in surface of installing plate (1), form " rice " font and arrange.
3. electric vibration table general switching vibration test fixture as claimed in claim 2, it is characterized in that: described installing hole (12) is manhole, and run through back structures (2), T-slot every described is provided with 6 installing holes (12), with the central shaft of described lightening hole as axis of symmetry, described lightening hole lateral symmetry be distributed；All of installing hole (12) on the surface of installing plate (1) in interior, in, outer three layers of distribution, and be positioned at, in, outer three distribution circle on, described three distribution circle common centers of circle.
4. electric vibration table general switching vibration test fixture as claimed in claim 3, it is characterised in that: described M12 steel bushing (13) is distributed on the surface of described installing plate (1) as follows:
Line on the basis of the straight line of T-slot described in any bar (11) place, draws the parallel lines of this datum line equally spacedly in the both sides of datum line；Then it is new datum line with another T-slot (11) place vertical with selected T-slot (11) at straight line, the parallel lines of this new datum line are drawn equally spacedly in the both sides of this datum line, the spacing drawn parallel lines for twice is identical, then can form several squares on the surface of installing plate (1), described M12 steel bushing (13) is embedded in described foursquare apex.
5. electric vibration table general switching vibration test fixture as claimed in claim 4, it is characterized in that: described M20 steel bushing (14) is distributed on the surface of described installing plate (1) as follows: described M20 steel bushing (14) is embedded in the edge of installing plate (1), it is distributed in inside and outside two-layer, the common distribution circle of M20 steel bushing (14) of all internal layers, the M20 steel bushing (14) of all outer layers another distribution circle altogether, the two distribution concyclic hearts of circle；Line on the basis of the straight line of T-slot described in any bar (11) place, turning clockwise with the intersection point of this datum line with described lightening hole central axis for center of rotation, described M20 steel bushing (14) is embedded in when datum line rotates to 11.25 °, 33.75 °, 56.25 °, 78.75 °, 101.25 °, 123.75 °, 146.25 ° and 168.75 ° and is distributed round point of intersection respectively at inside and outside.
6. electric vibration table general switching vibration test fixture as claimed in claim 5, it is characterized in that: described back structures (2) is arranged at the back side of installing plate (1), it has 8 identical reinforcements (21) and 8 identical depressions (22)；Described reinforcement (21) is radially disposed at the described T-slot (11) projected position at installing plate (1) back side along installing plate (1), described reinforcement (21) cross section in a thickness direction is zhou duicheng tuxing, and along installing plate (1) radially the most from the inside to the outside the thickness of reinforcement (21) be gradually reduced；Described depression (22) is the cambered surface of symmetrical shape；Arranging depression between two adjacent reinforcements (21) and have a depression (22), the described axis of symmetry in two adjacent reinforcement (21) cross sections in a thickness direction is 45 ° of angle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510348873.6A CN106289687A (en) | 2015-06-23 | 2015-06-23 | A kind of electric vibration table general switching vibration test fixture |
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| CN201510348873.6A CN106289687A (en) | 2015-06-23 | 2015-06-23 | A kind of electric vibration table general switching vibration test fixture |
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Cited By (5)
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| 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 |
| CN110068437A (en) * | 2019-05-13 | 2019-07-30 | 成都凯天电子股份有限公司 | The method of calibration of electronic product vibration magnitude |
| CN111044243A (en) * | 2019-12-25 | 2020-04-21 | 北京航星机器制造有限公司 | Vibration test clamping frock |
| CN112393867A (en) * | 2020-12-14 | 2021-02-23 | 天津航天瑞莱科技有限公司 | Testing device for vibration test of aviation suspension launching device |
| CN113155387A (en) * | 2021-03-30 | 2021-07-23 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Method for preparing universal box-type skin antenna vibration test clamp |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN111044243A (en) * | 2019-12-25 | 2020-04-21 | 北京航星机器制造有限公司 | Vibration test clamping frock |
| CN112393867A (en) * | 2020-12-14 | 2021-02-23 | 天津航天瑞莱科技有限公司 | Testing device for vibration test of aviation suspension launching device |
| CN112393867B (en) * | 2020-12-14 | 2021-05-14 | 天津航天瑞莱科技有限公司 | Testing device for vibration test of aviation suspension launching device |
| CN113155387A (en) * | 2021-03-30 | 2021-07-23 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Method for preparing universal box-type skin antenna vibration test clamp |
| CN113155387B (en) * | 2021-03-30 | 2023-12-01 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Method for preparing universal box type skin antenna vibration test clamp |
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Application publication date: 20170104 |