CN103697821B - A kind of size screening device for shock absorber for optical fiber inertial measurement unit based on machine vision - Google Patents
A kind of size screening device for shock absorber for optical fiber inertial measurement unit based on machine vision Download PDFInfo
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- CN103697821B CN103697821B CN201310714285.0A CN201310714285A CN103697821B CN 103697821 B CN103697821 B CN 103697821B CN 201310714285 A CN201310714285 A CN 201310714285A CN 103697821 B CN103697821 B CN 103697821B
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- assembly
- vibroshock
- optical fiber
- shock absorber
- circular bosses
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Abstract
The invention discloses a kind of size screening device for shock absorber for optical fiber inertial measurement unit based on machine vision, including lateral displacement assembly (1), length travel assembly (2), vision measurement assembly (3), measuring table assembly (4)；Lateral displacement assembly (1) and length travel assembly (2) orthogonal thereto distribution, the two is connected as a single entity by framework type base (5)；Being fixed with vision measurement assembly (3) on the workbench (201) of length travel assembly (2), vision measurement assembly (3) comprises a CCD camera (3A), b CCD camera (3B) and right angle rack (3C)；Measuring table assembly (4) is fixed on the base (101) of lateral displacement assembly (1).Structure of the present invention is compacter, uses machine vision technique to realize, to vibroshock circle diameter and the non-cpntact measurement of height, improve the precision of measurement.
Description
Technical field
The present invention relates to a kind of shock absorber for optical fiber inertial measurement unit dimensional uniformity and measure screening plant, particularly to one
Plant size screening device for shock absorber for optical fiber inertial measurement unit based on machine vision.
Background technology
Carrier rocket or missile armament optical fiber are used to group and are being launched or to bear from carrier in flight course
Random vibration or impact.Damage for avoiding vibration environment that optical fiber is used to group need to use vibroshock that optical fiber is used to group
Carry out vibration damping.Current Vibration Absorption Designing the most well solves optical fiber and is used to structural member and opto-electronic device in group and exists
The problem sustained damage in vibration environment, but the impact that optical fiber is used to organize service precision by vibration environment restricts always
The further raising of its navigation accuracy.Improve the vibration environment of used group, improve optical fiber and be used to group in vibration environment
Under navigation accuracy need the vibroshock that serviceability is consistent；The consistency of performance of vibroshock typically refers to vibroshock
Overall dimensions, Static stiffness, dynamic stiffness, resonance point, the technical specification such as damping efficiency consistent；Owing to subtracting
The device that shakes is flexible structure, and measurement screening conforming for its overall dimensions is difficult to be realized by contact type measurement.
Due to the difference of components and parts design manufacturing schedule, the vibroshock used in model is typically passed through certain
Stock's phase could use on used set product；For rubber shock absorber, even with a batch of product its
Ageing efficiency there is also difference, and profile expansion rate is not quite similar, through certain stock's phase, its overall dimensions
Can be varied from；For metal damper, although it does not exist the problem of aging deformation, owing to it makes
The complexity of technique, product exists for the diversity of size when completing；It is also required to during use carry out chi
Very little conforming screening.
Existing measurement technology is to be measured the overall dimensions of vibroshock by digital vernier slide calliper rule, due to
During measurement, the clamping dynamics of each tested vibroshock cannot be accomplished unanimously by operator, therefore measurement error tool
There is randomness；In a word, manual operations not only can introduce personal error but also inefficiency, bigger for batch
Its labor intensity of vibroshock dimensional measurement and the time consume be apparent from.
Summary of the invention
Technical problem solved by the invention: for overcoming the deficiencies in the prior art, it is provided that one regards based on machine
Feel size screening device for shock absorber for optical fiber inertial measurement unit, with realize to shock absorber for optical fiber inertial measurement unit size quick,
Accurately measure screening.
The technical solution of the present invention: a kind of shock absorber for optical fiber inertial measurement unit size selection based on machine vision
Device, it is characterised in that include lateral displacement assembly, length travel assembly, vision measurement assembly, measurement
Platform assembly；Wherein, lateral displacement assembly and the orthogonal thereto distribution of length travel assembly, the two is at the bottom of by frame-type
Seat is connected as a single entity；Lateral displacement assembly can drive length travel assembly to do translational motion by framework type base；
Being fixed with vision measurement assembly on the workbench of length travel assembly, vision measurement assembly includes vertical direction
For measure the internal diameter of vibroshock and the a-CCD photographic head of external diameter, horizontal direction for measuring vibroshock
The b-CCD photographic head of height and right angle rack, a-CCD photographic head and b-CCD photographic head are orthogonality relation；
Measuring table assembly is fixed on the base of lateral displacement assembly, and the test platform of measuring table assembly is installed
Having the transfer block for installing vibroshock to be measured, transfer block is arranged on the second circular bosses of test platform, surveys
Amount platform assembly is connected with the base of lateral displacement assembly.
Test platform is provided with the first circular bosses, and the center of the first circular bosses is provided with screwed hole；Set in transfer block
Having cylindrical section, cylindrical section side is thread spindle, and thread spindle is connected with screwed hole；The opposite side of cylindrical section is
Two circular bosses, the diameter of the second circular bosses is less than the race diameter of tested vibroshock；The center of the second circular bosses
Being provided with optical axis, the height of optical axis is less than the height of tested vibroshock, and the diameter of optical axis is not more than tested vibroshock
Internal diameter.
The end of the centre bore of tested vibroshock, the upper surface of the second circular bosses and tested vibroshock is connected on optical axis
Face contacts.
The a flat board of frame bracket and b platen parallel, c flat board is vertical with a flat board and b flat board.
Transfer block on measuring table assembly is equidistantly distribution in cross direction profiles and genesis analysis.
Present invention beneficial effect compared with prior art:
(1) lateral displacement assembly and length travel assembly common frame formula base, it is ensured that two displacement components are just
The accuracy of friendship relation；Meanwhile, the two is connected as a single entity, and makes structure compacter；
(2) machine vision technique is used to realize, to vibroshock circle diameter and the non-cpntact measurement of height, improving
The precision measured；
(3) it is automatic that measurement position is accurately positioned and measures by the step-by-step system realization using omnidirectional distribution
Change, improve measurement efficiency；
(4) vibroshock transfer block can be replaced according to requirements, it is achieved that to multiple under identical platform
The measurement screening of different size specification vibroshock, provides cost savings.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structure chart of lateral displacement assembly of the present invention；
Fig. 3 is the exploded view of lateral displacement assembly of the present invention；
Fig. 4 is the structure chart of length travel assembly of the present invention；
Fig. 5 is the exploded view of length travel assembly of the present invention；
Fig. 6 is the structure chart of vision measurement assembly of the present invention；
Fig. 7 is the exploded view of vision measurement assembly of the present invention；
Fig. 8 is the structure chart of measuring table assembly of the present invention；
Fig. 9 is the exploded view of measuring table assembly of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further details.
The present invention is a kind of measurement apparatus being applicable to shock absorber for optical fiber inertial measurement unit size selection, outside it includes
Portion buys device (motor, shaft coupling, ball screw assembly, guide rail, guide supporting, CCD camera
Deng) and buy the keyset of device, framework type base, feed screw nut seat, base plate etc. for installing outside；
The motor in device is bought for driving vision measurement assembly to arrive specified measurement position in described outside；
Part CCD camera is bought for tested vibroshock is carried out image acquisition in described outside；
Seeing Fig. 1, a kind of size screening device for shock absorber for optical fiber inertial measurement unit based on machine vision, including horizontal stroke
To displacement component 1, length travel assembly 2, vision measurement assembly 3, measuring table assembly 4, lateral displacement
Assembly 1 and the orthogonal thereto distribution of length travel assembly 2, the two is connected as a single entity by framework type base 5；Laterally position
Moving assembly 1 can drive length travel assembly 2 to do translational motion by framework type base 5.
Seeing Fig. 2, Fig. 3, the structure of lateral displacement assembly 1 forms and annexation is: slide block 111a,
B slide block 111b, c slide block 111c, d slide block 111d, a feed screw nut seat 113 all with framework type base 5
B flat board 52 connect；The nut of a ball-screw is arranged on the centre bore 113a of a feed screw nut seat 113
In, a guide rail 112a is arranged in the centre bore of a slide block 111a, b slide block 111b；B guide rail 112b pacifies
It is contained in the centre bore of c slide block 111c, d slide block 111d；The two ends of a guide rail 112a respectively with a guide rail
The centre bore of support 110a, b rail brackets 110b connects；The two ends of b guide rail 112b respectively with c guide rail
The centre bore of support 110c, d rail brackets 110d connects；A rail brackets 110a, b rail brackets 110b,
C rail brackets 110c, d rail brackets 110d is all connected with base plate 101；The a end of a ball-screw 107
End axle 107c and b bearing 106b is connected；B bearing 106b connection is arranged in b bearing block 104b, and
By a back-up ring 114, b bearing 106b is fixed；The a front end thick axle 107b of a ball-screw 107
Being connected with a bearing 106a, one end of a front end thin axle 107a and a shaft coupling is connected, another of a shaft coupling
End is connected with a motor；A motor is connected with motor adaptor 103；Motor is transferred
Part 103 is connected with base plate 101；A travel switch is arranged in a travel switch seat, and b travel switch is arranged on
In b travel switch seat, two travel switch seats are installed on base plate 101.
See Fig. 4, Fig. 5, the structure of length travel assembly 2 composition and annexation thereof be: b leading screw spiral shell
Female seat 213 is connected with workbench 201；The nut of b ball screw assembly, 207 is arranged on b feed screw nut seat 213
Center hole 213a in, e slide block 211a, f slide block 211b, g slide block 211c, h slide block 211d divides
It is not arranged on the corner of workbench 201, with the homonymy that b feed screw nut seat 213 is positioned at workbench 201；c
The centre bore of guide rail 212a and e slide block 211a, f slide block 211b is connected；D guide rail 212b and g slide block 211c,
The centre bore of h slide block 211d connects；The two ends of c guide rail 212a respectively with e rail brackets 210a, f guide rail
The centre bore of support 210b connects；The two ends of d guide rail 212b respectively with g rail brackets 210c, h guide rail
The centre bore of support 210d connects；E rail brackets 210a, f rail brackets 210b, g rail brackets 210c,
H rail brackets 210d is connected with a flat board 51 of framework type base 5；The b terminal shaft of b ball-screw 207
207c with d bearing 206b is connected, and d bearing 206b is arranged in d bearing block 214, and by b back-up ring
215 couples of d bearing 206b are fixed；The b front end thick axle 207b of b ball-screw 207 and c-axis hold 206a
Connecting, one end of b front end thin axle 207a and b shaft coupling 205 is connected；The other end of b shaft coupling 205 with
B step motor shaft connects；C-axis holds 206a and is connected with c-axis bearing 204；C-axis bearing 204 and d bearing
Seat 214 is all connected with a flat board 51 of framework type base 5；The installed surface of b motor turns with motor
Fishplate bar 203 connects；Motor keyset 203 is connected with the c flat board 53 of framework type base 5；C stroke
Switch is arranged in c travel switch seat, and d travel switch is arranged in d travel switch seat, and two strokes are opened
Close seat to be installed on a flat board 51 of framework type base 5.
Participating in Fig. 6, Fig. 7, the structure of vision measurement assembly 3 forms and annexation is: right angle rack
3C is used for fixing a-CCD photographic head 3A and b-CCD photographic head 3B, and right angle rack 3C is provided with connecting plate
3C1, a installing plate 3C2, b installing plate 3C3, connecting plate 3C1 and a installing plate 3C2 is vertical, a installing plate
3C2 with b installing plate 3C3 is vertical, and b installing plate 3C3 is provided with through hole 3C31, connecting plate 3C1 and longitudinal direction
The workbench 201 of translation assembly 2 connects；A installing plate 3C2 is used for fixing a-CCD photographic head 3A；a-CCD
Photographic head 3A measures the diameter of vibroshock through through hole 3C31；B installing plate 3C3 is used for fixing b-CCD and takes the photograph
As head 3B.
Seeing Fig. 8, Fig. 9, the structure of measuring table assembly 4 forms and annexation is: measuring table
4B is provided with the first circular bosses 4B1, and the center of the first circular bosses 4B1 is provided with screwed hole 4B2；Transfer block 4A
Being provided with cylindrical section 4A2, cylindrical section 4A2 side is thread spindle 4A1, thread spindle 4A1 and screwed hole 4B2
Connect；The opposite side of cylindrical section 4A2 is the second circular bosses 4A3, and the diameter of the second circular bosses 4A3 is less than quilt
Survey the race diameter of vibroshock；The center of the second circular bosses 4A3 is provided with optical axis 4A4, the height of optical axis 4A4
Less than the height of tested vibroshock, the diameter of optical axis 4A4 is not more than the internal diameter of tested vibroshock；Quilt during use
The centre bore surveying vibroshock is arranged on optical axis 4A4, the end face of tested vibroshock and the second circular bosses 4A3's
Upper surface contacts.
The using method of the present invention is:
Multiple vibroshocks to be measured are arranged on the optical axis 4A4 of array distribution one by one, by controlling a stepping
Motor 102 and b motor 202 moving-vision measures the position of assembly 3, makes a-CCD photographic head to subtracting
The shake nose circle face of device carries out pinpointing image acquisition, and b-CCD photographic head carries out fixed point figure to the face of cylinder of vibroshock
As gathering；It practice, the vibroshock circle diameter that vibroshock distance a-CCD photographic head the most closely records is the biggest,
The vibroshock height that vibroshock distance b-CCD photographic head the most closely records is the biggest；The difficulty when actual installation vibroshock
To accomplish vibroshock conllinear in horizontal direction, on vertical direction, vibroshock is highly consistent；A-CCD photographic head is surveyed
To each vibroshock circle diameter b-CCD to be passed through photographic head in this vibroshock of gathering in the picture
Position carries out ratiometric conversion, makes the diameter of all vibroshocks recorded based on same benchmark；B-CCD photographic head
This vibroshock gathered in height a-CCD the to be passed through photographic head of each vibroshock measured position in the picture
Put and carry out ratiometric conversion, make the height of all vibroshocks recorded based on same benchmark；Complete all vibroshocks
Image acquisition after, by computed in software obtain each vibroshock circle diameter and height, by arranging threshold value
Carry out vibroshock high consistency and the conforming screening of circumference；Vibroshock within threshold value is defined as size one
The vibroshock caused.
The content not being described in detail in description of the invention belongs to the known technology of those skilled in the art.
Claims (4)
1. a size screening device for shock absorber for optical fiber inertial measurement unit based on machine vision, it is characterised in that bag
Include lateral displacement assembly (1), length travel assembly (2), vision measurement assembly (3), measuring table assembly (4)；
Wherein, lateral displacement assembly (1) and length travel assembly (2) orthogonal thereto distribution, the two is by framework type base (5)
It is connected as a single entity；Lateral displacement assembly (1) can pass through framework type base (5) and drive length travel assembly (2) to translate
Motion；It is fixed with vision measurement assembly (3), vision measurement group on the workbench (201) of length travel assembly (2)
Part (3) include vertical direction for the a-CCD photographic head (3A) of internal diameter and external diameter measuring vibroshock, water
Square to the b-CCD photographic head (3B) of height and right angle rack (3C), a-CCD for measuring vibroshock
Photographic head (3A) and b-CCD photographic head (3B) are orthogonality relation；Measuring table assembly (4) is fixed on lateral displacement
On the base (101) of assembly (1), the test platform (4B) of measuring table assembly (4) is provided with and treats for installation
Surveying the transfer block (4A) of vibroshock, transfer block (4A) is arranged on first circular bosses (4B1) of test platform (4B)
On；
Test platform (4B) is provided with the first circular bosses (4B1), and the center of the first circular bosses (4B1) is provided with
Screwed hole (4B2)；Transfer block (4A) is provided with cylindrical section (4A2), and cylindrical section (4A2) side is screw thread
Axle (4A1), thread spindle (4A1) is connected with screwed hole (4B2)；The opposite side of cylindrical section (4A2) is
Two circular bosses (4A3), the diameter of the second circular bosses (4A3) is less than the race diameter of tested vibroshock；Second
The center of circular bosses (4A3) is provided with optical axis (4A4), and the height of optical axis (4A4) is less than tested vibroshock
Highly, the diameter of optical axis (4A4) is not more than the internal diameter of tested vibroshock.
A kind of shock absorber for optical fiber inertial measurement unit size selection based on machine vision the most according to claim 1
Device, it is characterised in that the upper centre bore connecting tested vibroshock of optical axis (4A4), the second circular bosses (4A3)
The end contact of upper surface and tested vibroshock.
A kind of shock absorber for optical fiber inertial measurement unit size selection based on machine vision the most according to claim 1
Device, it is characterised in that a flat board (51) of framework type base (5) is parallel with b flat board (52), c flat board (53)
Vertical with a flat board (51) and b flat board (52).
A kind of shock absorber for optical fiber inertial measurement unit size selection based on machine vision the most according to claim 1
Device, it is characterised in that the transfer block (4A) on measuring table assembly (4) is in cross direction profiles and genesis analysis
It is equidistantly distribution.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310714285.0A CN103697821B (en) | 2013-12-20 | 2013-12-20 | A kind of size screening device for shock absorber for optical fiber inertial measurement unit based on machine vision |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310714285.0A CN103697821B (en) | 2013-12-20 | 2013-12-20 | A kind of size screening device for shock absorber for optical fiber inertial measurement unit based on machine vision |
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| CN103697821A CN103697821A (en) | 2014-04-02 |
| CN103697821B true CN103697821B (en) | 2016-08-17 |
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| CN114353823A (en) * | 2021-04-29 | 2022-04-15 | 北京航天时代激光导航技术有限责任公司 | Parameter matching method for inertia unit shock absorber |
| CN113319217A (en) * | 2021-05-28 | 2021-08-31 | 江苏创源电子有限公司 | Pre-bending detection equipment |
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| JP2006010482A (en) * | 2004-06-25 | 2006-01-12 | Nakamura Seisakusho:Kk | Noncontact measurement and inspection apparatus |
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| JP5147173B2 (en) * | 2005-09-06 | 2013-02-20 | 興和株式会社 | Inspection tray |
| CN101517354A (en) * | 2006-09-12 | 2009-08-26 | 大日本印刷株式会社 | Protrusion height measuring method, protrusion height measuring apparatus and program |
| CN201002124Y (en) * | 2006-12-21 | 2008-01-09 | 一重集团大连设计研究院 | Forge piece online non-contacting measuring system |
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