CN208156385U - A kind of high-accuracy space focus adjusting mechanism of annular layout - Google Patents
A kind of high-accuracy space focus adjusting mechanism of annular layout Download PDFInfo
- Publication number
- CN208156385U CN208156385U CN201820415762.1U CN201820415762U CN208156385U CN 208156385 U CN208156385 U CN 208156385U CN 201820415762 U CN201820415762 U CN 201820415762U CN 208156385 U CN208156385 U CN 208156385U
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- guide rail
- focal plane
- adjusting mechanism
- focus adjusting
- fixing seat
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Abstract
The utility model belongs to optical engineering technical field, is related to a kind of high-accuracy space focus adjusting mechanism of annular layout.The problem of the utility model solves existing focus adjusting mechanism and is also easy to produce deformation, mechanics bad adaptability, causes low space camera reliability, image quality existing defects.The utility model includes fixing seat, detector and focusing movements mechanism, further includes focal plane circuit mounting structure；Focal plane circuit mounting structure includes focal plane support frame and focal plane subassembly mounting rack；Focusing movements mechanism includes motor, reduction gearbox, ball screw assembly, guide rail slide block pair and shaft coupling；Fixing seat is cylinder-like structure, and upper, the left and right portion in upper, left and right portion or end face inside fixing seat is equipped with guide rail mounting base；The guide rail of guide rail slide block pair is mounted in guide rail mounting base, and multiple groups guide rail slide block pair is arranged in parallel；Focal plane subassembly mounting rack and the sliding block of guide rail slide block pair are fixed, and focal plane support frame is fixed on the rear end of focal plane subassembly mounting rack, and detector is fixed on focal plane support frame.
Description
Technical field
The utility model belongs to optical engineering technical field, is related to a kind of high-accuracy space focus adjusting mechanism of annular layout.
Background technique
With the development of space technology, space optical camera is widely applied in civil field.To obtain high-resolution
The image of degree, hiperspace camera or space telescope need by adjusting secondary mirror, corrective lens (eye protection) or detector position, to mend
It repays the image quality as caused by each part dimension imbalance of camera to decline, obtains optimal imaging quality.
Focus adjusting mechanism needs to carry out specific aim and adaptability design according to focusing range, focusing accuracy, focusing time etc., together
When should have good space environment adaptability and high reliability.Current spatial optical camera is mainly using mechanical focusing
Mechanism, principle is to realize displacement by motor and transmission mechanism, to realize that camera system is focused.
This kind of focus adjusting mechanism is by two guide rails as guiding movement component, the detector photosurface or light of component to be adjusted
Learn the moving direction that part transparent surface is each perpendicular to guide rail slide block mechanism, the vibration either born in mechanical test or big used
Property power system load, or starting or parking when movement can all generate moment of inertia, these moments of inertia can be directly applied to lead
Rail sliding block and ball-screw position, so ball-screw can be because of vibration or heavy load inertia on perpendicular to the guide rail direction of motion
Power generates moment of flexure, and the impaired even lead screw of the surface lubrication film layer of ball inside lead screw pair and guide rail slide block itself is caused to generate shape
Become, leads to kinematic accuracy decline or clamping stagnation, seriously affect the normal work of focus adjusting mechanism, reduce the reliability of system.
In addition to this, since nearly all optical module is each perpendicular to two guide rails, this requires optical modules and guide rail
There is very high verticality, this proposes very high required precision to the processing technology and assembly technology of certain parts, and
It is unfavorable for focus adjusting mechanism to work under complicated stringent environment.In addition, the focus adjusting mechanism of traditional structure is easy to make photosensitive element
Deviate image planes in the direction of the optical axis, and its offset changes with vertical direction, causes CCD photosensitive element that cannot be substantially parallel
In image planes, part pixel can deviate image planes, this is unfavorable for space camera high-precision and is imaged.
Summary of the invention
The purpose of this utility model is that proposing a kind of high-accuracy space focus adjusting mechanism of annular layout, the space focusing machine
Structure replaces traditional double guide rail slide blocks using three guide rail slide blocks of annular spread, constrains more freedom degrees, makes wait adjust
The movement of integeral part is more stable, and either during mechanical test still emits, flies, which is constrained by more freedom
To higher stability, eliminates the swing of image planes component in traditional focus adjusting mechanism and significantly shake trend, so that it will not right
Guide rail slide block and ball-screw generate torque, and easy to process, assembly, image quality are stablized.
The technical solution that the utility model solves the above problems is：A kind of high-accuracy space focus adjusting mechanism of annular layout,
Including fixing seat, detector and focusing movements mechanism, it is characterized in that,
It further include focal plane circuit mounting structure；Focal plane circuit mounting structure includes focal plane support frame and focal plane subassembly installation
Frame；
The focusing movements mechanism includes motor, reduction gearbox, ball screw assembly, guide rail slide block pair and shaft coupling；It is described to lead
The quantity of rail sliding block pair is at least three groups；
The fixing seat is cylinder-like structure, and upper, the left and right portion in upper, left and right portion or end face inside fixing seat, which is equipped with, to be led
Rail mounting base, guide rail mounting base and guide rail slide block pair correspond；
The guide rail of guide rail slide block pair is mounted in guide rail mounting base, and all guide rail slide block pairs are arranged in parallel；Focal plane subassembly peace
It shelves and is fixed with the sliding block of guide rail slide block pair, focal plane support frame is fixed on the rear end of focal plane subassembly mounting rack, and detector is fixed on
On focal plane support frame, focal plane subassembly mounting rack is vertical with the normal direction of detector photosurface, all guide rail slide block pairs with spy
The normal direction for surveying device photosurface is parallel；
Motor, the reduction gearbox of focusing movements mechanism are arranged in fixing seat, and the nut and focal plane subassembly of ball screw assembly, are pacified
Shelve fixation；
Motor is connect by shaft coupling with reduction gearbox, and reduction gearbox drives the ball screw turns of ball screw assembly, nut band
Dynamic focal plane subassembly mounting rack is mobile, to drive detector mobile, realizes focusing.
The above are the basic structures of the utility model, are based on the basic structure, and the utility model is also made following optimization and changed
Into：
It further, further include that detector disappears veiling glare cover, detector disappears before veiling glare cover is mounted on focal plane subassembly mounting rack
End.
Further, the quantity of above-mentioned guide rail slide block pair is three groups.
Further, three groups of guide rail slide block pairs and one group of ball screw assembly, even circumferential in fixing seat are distributed.
Further, the end face of fixing seat is arranged in above-mentioned guide rail mounting base.
Further, there are brace in the two sides of above-mentioned each guide rail mounting base, for improving rigidity requirement.
Further, it is concentrated to reduce the stress of brace, above-mentioned brace one end is connect with guide rail mounting base, the other end
It is connect with the end face of fixing seat.
Further, above-mentioned fixing seat is equipped with multiple lightening holes.
Further, in order to realize maximization loss of weight and guarantee also to want fixing seat intensity, above-mentioned lightening hole is triangle
Lightening hole.
Further, the outer rim of above-mentioned fixing seat is equipped with flange.
The advantages of the utility model：
1, stability is good.The utility model replaces traditional double guide rails sliding using three guide rail slide blocks of annular spread
Block constrains more freedom degrees, keeps optical module movement more stable, either during mechanical test still emits, flies,
Detector is constrained to obtain higher stability by more freedom, so that it will not generate torque to guide rail slide block and ball-screw,
Guide rail and lead screw are symmetrical arranged, and are improved the torsional rigidity of sliding block and feed screw nut, are eliminated image planes in traditional focus adjusting mechanism
The swing and significantly shake that component occurs, provide higher stability for the normal work of focus adjusting mechanism.
2, guiding performance is good.The utility model uses three and is led in 90 degree of equally distributed guide rail slide block pair focusing planes
To design scheme, three guide rail slide block pairs are arranged in parallel, it is made to realize high guiding performance in the cost of lower assembly and allotment
Demand.
3, assembly precision is high.The utility model fixing seat secures multiple parts, focal plane circuit mounting structure and focusing fortune
Motivation structure is assemblied in structure fixing seat, greatly reduces the presence of rigging error, realizes part unified many zero
The reference for assembling purpose of part.
4, can disappear veiling glare.Outside traditional mechanical focusing mechanism image planes most times are exposed to, optical element is directly in opening
Image is obtained in environment, significantly increases interference of the veiling glare to imaging system in this way, and the utility model is disappeared veiling glare using detector
It is provide with meter, imaging is made to avoid the interference by veiling glare outside focus adjusting mechanism.
5, light-weight.The utility model carries out light-weight design to fixing seat, and most of structure is all made of type chamber and loss of weight
The scheme in hole greatly reduces pts wt, and one part of fixing seat combines the function of many parts, to a certain extent
Reduce number of parts, saves launch cost.
6, high reliablity.The utility model uses the focus adjusting mechanism of mechanical structure formula, and there is low cost and failure to be contemplated that
Property the advantages of, have higher reliability.
Detailed description of the invention
Fig. 1 is the high-accuracy space focus adjusting mechanism main view of the utility model annular layout；
Fig. 2 is the high-accuracy space focus adjusting mechanism right view of the utility model annular layout.
Wherein, 1- fixing seat；2- detector；3- focal plane support frame；4- focal plane subassembly mounting rack；5- motor；6- shaft coupling；
7- reduction gearbox；8- ball screw assembly,；801- nut；802- ball-screw；9- guide rail slide block pair；10- guide rail mounting base；11- is visited
Device is surveyed to disappear veiling glare cover；12- brace；13- lightening hole；14, flange.
Specific embodiment
It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
Referring to Fig. 1-Fig. 2, a kind of high-accuracy space focus adjusting mechanism of annular layout, including fixing seat 1, detector 2, focusing
Movement mechanism, focal plane circuit mounting structure and detector disappear veiling glare cover 11；Focal plane circuit mounting structure includes 3 He of focal plane support frame
Focal plane subassembly mounting rack 4.
The focusing movements mechanism includes motor 5, shaft coupling 6, reduction gearbox 7, ball screw assembly, 8 and guide rail slide block pair 9；Institute
The quantity for stating guide rail slide block pair 9 is at least three groups, in the case where guaranteeing reliability and reducing the requirement of cost, preferably three groups.
The fixing seat 1 is cylinder-like structure, and upper, the left and right portion in upper, left and right portion or end face inside fixing seat 1 is equipped with
Guide rail mounting base 10；The end face of fixing seat 1, the two sides of each guide rail mounting base 10 are arranged in the guide rail mounting base 10 of the present embodiment
There is brace 12, described brace one end is connect with guide rail mounting base 10, and the other end is connect with the end face of fixing seat 1, guide rail
Mounting base 10 and guide rail slide block pair 9 correspond.
Three groups of guide rail slide block pairs 9 are arranged in parallel, and the guide rail of guide rail slide block pair 9 is mounted in guide rail mounting base 10；Focal plane group
Part mounting rack 4 and the sliding block of guide rail slide block pair 9 are fixed, and focal plane support frame 3 is fixed on the rear end of focal plane subassembly mounting rack 4, detection
The device veiling glare cover 11 that disappears is mounted on the front end of focal plane subassembly mounting rack 4.Detector 2 is fixed on focal plane support frame 3, focal plane subassembly peace
Shelve it is 4 vertical with the photosurface normal direction of detector 2, three groups of guide rail slide block pairs 9 with the photosurface normal direction of detector 2
In parallel.
Motor 5, the reduction gearbox 7 of focusing movements mechanism are arranged in the lower part of fixing seat 1, the nut 801 of ball screw assembly, 8 with
The lower part of focal plane subassembly mounting rack 4 is fixed.Three groups of guide rail slide block pairs 9 and one group of ball screw assembly, 8 even circumferential in fixing seat 1
Distribution, i.e. three groups of guide rail slide block pairs 9 be respectively distributed to the fixing seat 1 of annular nine o'clock direction, twelve-hour direction and 3 points
The six o'clock direction of fixing seat 1 is arranged in clock direction, ball screw assembly, 8, wherein one group of guide rail slide block pair 9 and ball screw assembly, 8
It is symmetrical arranged, in addition two groups of guide rail slide block pairs 9 are symmetrical arranged, and the anti-torsion for improving guide rail slide block pair 9 and ball screw assembly, 8 is rigid
Degree eliminates image planes component occurs in traditional focus adjusting mechanism swing and significantly shake, mentions for the normal work of focus adjusting mechanism
For higher stability.
In order to realize maximization loss of weight and guarantee also to want 1 intensity of fixing seat, fixing seat 1 is equipped with subtracting for multiple triangles
Repeated hole 13, the utility model carry out lightweight to fixing seat 1 maximum in the utility model by computer aided analysis
Design, most of structure are all made of the scheme of type chamber and lightening hole, greatly reduce pts wt, and triangle has stable make
With.
The outer rim of fixing seat 1 is equipped with flange 14, convenient for fixed and installation other component.
The working principle of the utility model is：Motor 5 is connect by shaft coupling 6 with reduction gearbox 7, and reduction gearbox 7 drives ball
The ball-screw 802 of lead screw pair 8 rotates, and nut 801 drives focal plane subassembly mounting rack 4 mobile, realizes on focal plane subassembly mounting rack 4
All components of installation are mobile, to drive detector 2 mobile, realize focusing.
Claims (10)
1. a kind of high-accuracy space focus adjusting mechanism of annular layout, including fixing seat (1), detector (2) and focusing movements mechanism,
It is characterized in that：
It further include focal plane circuit mounting structure；Focal plane circuit mounting structure includes focal plane support frame (3) and focal plane subassembly mounting rack
(4)；
The focusing movements mechanism includes motor (5), shaft coupling (6), reduction gearbox (7), ball screw assembly, (8) and guide rail slide block pair
(9)；The quantity of the guide rail slide block secondary (9) is at least three groups；
The fixing seat (1) is cylinder-like structure, the internal top of fixing seat (1), left part, the top of right part or end face, left part,
Right part is equipped with guide rail mounting base (10), and guide rail mounting base (10) and guide rail slide block secondary (9) correspond；
The guide rail of guide rail slide block pair (9) is mounted on guide rail mounting base (10), and all guide rail slide blocks secondary (9) are arranged in parallel；Focal plane
Component mounting block (4) and the sliding block of guide rail slide block secondary (9) are fixed, and focal plane support frame (3) is fixed on focal plane subassembly mounting rack (4)
Rear end, detector (2) are fixed on focal plane support frame (3), the photosurface normal of focal plane subassembly mounting rack (4) and detector (2)
Direction is vertical, and all guide rail slide blocks secondary (9) are parallel with the photosurface normal direction of detector (2)；
Motor (5), the reduction gearbox (7) of focusing movements mechanism are arranged in the lower part of fixing seat (1), the nut of ball screw assembly, (8)
(801) fixed with focal plane subassembly mounting rack (4)；
Motor (5) is connect by shaft coupling (6) with reduction gearbox (7), and reduction gearbox (7) drives the ball-screw of ball screw assembly, (8)
(802) it rotates, it is mobile that nut (801) drives focal plane subassembly mounting rack (4), to drive detector (2) mobile focusing.
2. a kind of high-accuracy space focus adjusting mechanism of annular layout according to claim 1, it is characterised in that：It further include visiting
It surveys device to disappear veiling glare cover (11), the detector veiling glare cover (11) that disappears is mounted on the front ends of focal plane subassembly mounting rack (4).
3. a kind of high-accuracy space focus adjusting mechanism of annular layout according to claim 2, it is characterised in that：The guide rail
The quantity of sliding block pair (9) is three groups.
4. a kind of high-accuracy space focus adjusting mechanism of annular layout according to claim 3, it is characterised in that：Three groups of guide rails
Sliding block pair (9) and one group of ball screw assembly, (8) even circumferential on fixing seat (1) are distributed.
5. a kind of high-accuracy space focus adjusting mechanism of annular layout according to claim 1 to 4, it is characterised in that：Institute
Guide rail mounting base (10) setting is stated in the end face of fixing seat (1).
6. a kind of high-accuracy space focus adjusting mechanism of annular layout according to claim 5, it is characterised in that：Each guide rail
The two sides of mounting base (10) have brace (12).
7. a kind of high-accuracy space focus adjusting mechanism of annular layout according to claim 6, it is characterised in that：The oblique pull
Muscle (12) one end is connect with guide rail mounting base (10), and the other end is connect with the end face of fixing seat (1).
8. a kind of high-accuracy space focus adjusting mechanism of annular layout according to claim 7, it is characterised in that：The fixation
Seat (1) is equipped with multiple lightening holes (13).
9. a kind of high-accuracy space focus adjusting mechanism of annular layout according to claim 8, it is characterised in that：The loss of weight
Hole (13) is triangle lightening hole.
10. a kind of high-accuracy space focus adjusting mechanism of annular layout according to claim 9, it is characterised in that：It is described solid
The outer rim of reservation (1) is equipped with flange (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820415762.1U CN208156385U (en) | 2018-03-26 | 2018-03-26 | A kind of high-accuracy space focus adjusting mechanism of annular layout |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820415762.1U CN208156385U (en) | 2018-03-26 | 2018-03-26 | A kind of high-accuracy space focus adjusting mechanism of annular layout |
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| CN208156385U true CN208156385U (en) | 2018-11-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303833A (en) * | 2018-03-26 | 2018-07-20 | 中国科学院西安光学精密机械研究所 | A kind of high-accuracy space focus adjusting mechanism of annular layout |
| CN111487743A (en) * | 2020-05-22 | 2020-08-04 | 中国科学院上海技术物理研究所 | High-precision one-dimensional focusing mechanism of space remote sensing camera |
-
2018
- 2018-03-26 CN CN201820415762.1U patent/CN208156385U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303833A (en) * | 2018-03-26 | 2018-07-20 | 中国科学院西安光学精密机械研究所 | A kind of high-accuracy space focus adjusting mechanism of annular layout |
| CN111487743A (en) * | 2020-05-22 | 2020-08-04 | 中国科学院上海技术物理研究所 | High-precision one-dimensional focusing mechanism of space remote sensing camera |
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