CN105204159B - Reduce stress deformation's high accuracy pendulum mirror structure - Google Patents
Reduce stress deformation's high accuracy pendulum mirror structure Download PDFInfo
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- CN105204159B CN105204159B CN201510608211.8A CN201510608211A CN105204159B CN 105204159 B CN105204159 B CN 105204159B CN 201510608211 A CN201510608211 A CN 201510608211A CN 105204159 B CN105204159 B CN 105204159B
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- bearing
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- mirror
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- 238000005096 rolling process Methods 0.000 claims abstract description 21
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 230000003139 buffering effect Effects 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 230000008439 repair process Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 7
- 238000003384 imaging method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 244000079889 Cymbidium pendulum Species 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/105—Scanning systems with one or more pivoting mirrors or galvano-mirrors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Telescopes (AREA)
Abstract
The invention discloses a high-precision swing mirror structure capable of reducing stress deformation, which comprises a base, a swing mirror seat and two rotating shafts, wherein the two rotating shafts are coaxial, two support columns are arranged on the base, and through holes are formed in equal-height positions on the two support columns; the swing mirror is fixed on the swing mirror seat; the two rotating shafts are respectively a left rotating shaft and a right rotating shaft, and the left rotating shaft and the right rotating shaft are respectively arranged in a through hole of the strut; the left rotating shaft and the right rotating shaft respectively comprise a pin shaft and a rolling bearing sleeved on the pin shaft, one ends of the two pin shafts which are opposite are provided with connecting plates, and two ends of the swing mirror seat which are opposite are provided with connecting parts which are respectively fixedly connected with the connecting plate of the left rotating shaft and the connecting plate of the right rotating shaft; stress relief grooves are formed in the connecting plate and the connecting portion. The invention does not increase the production and adjustment cost, and has the advantages of simple and convenient processing, low cost, high rotation precision, high reliability and the like.
Description
Technical field
The present invention relates to high accuracy to put mirror construction applications, more particularly to the high precision scanning imaging phase under effect on environment
Machine puts mirror.
Background technology
When in general scanning imagery camera works, the rotation by putting mirror makes the target of different field of view angle enter optical system
System is so as to complete scanning imagery function, and its light path sketch is as shown in figure 1, light is turned back into rear optical system completion through overswing mirror
Imaging function, under camera working condition, pendulum mirror needs to rotate in the range of certain angle, i.e. α angles change within the specific limits.By
Fig. 1 understands that the imaging function of the mutually confidential completion high quality of scanning imagery is put it is necessary to ensure higher pendulum mirror rotation precision
The mounting structure of mirror must have enough abilities for resisting stress deformation caused by environmental load.
In the prior art, the pendulum mirror of in general scanning imagery camera will ensure that minute surface is put down with its rotor shaft direction in the adjustment stage
Capable or coplanar, minute surface is parallel or coplanar with rear optical system optical axis perpendicular to the normal direction of its rotating shaft, pendulum mirror rotating shaft and rear optics
Systematic optical axis are vertical.Requirements above can relatively easily be reached in debugging process, but in camera real work, due to temperature
Etc. the change of environmental condition, stress can be produced unavoidably by putting the connecting portion of mirror and constitutional detail, on the one hand stress can cause to put mirror
Mirror shape changes, and on the other hand can reduce rotating shaft precision so as to cause to put mirror and its rotating shaft position relative with rear optical system optical axis
The relation of putting changes, and then influences image quality.Thus, it is ensured that imaging essence of the scanning imagery camera under complex working condition
Degree, it is very necessary that a kind of high accuracy that can reduce stress deformation of design puts mirror structure.
The content of the invention
Pendulum mirror rotating shaft for scanning imagery camera common in the prior art causes under the environmental conditions such as temperature change
Problems, and in view of its operating mode when being worked on vehicle-mounted and airborne platform is complicated, imaging requirements are high the problems such as, this hair
It is bright to provide a kind of high accuracy pendulum mirror structure for reducing stress deformation.
Technical scheme is as follows：
A kind of high accuracy pendulum mirror structure for reducing stress deformation, including base, pendulum mirror, pendulum microscope base and two rotating shafts, two
Rotating shaft is coaxial, and it is characterized in that：
The base is provided with two pillars, and through hole is equipped with the isometry position on two pillars；Pendulum mirror is fixed on pendulum
On microscope base；Two rotating shafts are respectively left rotary shaft and right spindle, and left rotary shaft and right spindle are separately mounted in a through hole of pillar；
Left rotary shaft and right spindle include bearing pin and the rolling bearing being enclosed on bearing pin, and the relative one end of two bearing pins is provided with connecting plate,
The relative both ends of pendulum microscope base are provided with connecting portion, the connecting portion respectively with the connecting plate of left rotary shaft and the company of right spindle
Fishplate bar is fixedly connected；
Stress relief groove is equipped with the connecting plate and connecting portion.
The other end of two bearing pins is equipped with threaded connection section；Bearing pin is provided with block and axle for spacing rolling bearing
Bearing ring, rolling bearing is between corresponding block and bearing trim ring；Bearing trim ring includes trim ring and bearing external pressure in bearing
Circle；
Bearing internal pressure snare is connected on the threaded connection section of bearing pin, is fixedly connected with bearing pin；The outer trim ring of bearing is fixed with pillar
Connection.
Bearing spacer is installed between two angular contact ball bearings.
It is equipped with through hole on connecting plate and connecting portion, passes through screw between the through hole on through hole and connecting portion on connecting plate
Threaded connection.
Repaiied between connecting portion and corresponding connecting plate provided with pendulum mirror and cut pad.
The rolling bearing of left rotary shaft includes two angular contact ball bearings, and the two angular contact ball bearings are back-to-back to be socketed in pin
On axle, the rolling bearing of right spindle is deep groove ball bearing.
On connecting plate and the stress relief groove of connecting portion has three, on connecting plate and connecting portion three stress relief grooves
In two laterally set, another is vertically arranged.
Pendulum microscope base includes picture frame and bottom plate, and picture frame is connected with bottom plate forms a barrel, and pendulum mirror is embedded in the barrel,
The reflecting surface of pendulum mirror is higher by barrel or concordant with barrel, puts and is filled with buffering adhesive between mirror and pendulum microscope base.
Microscope base is put with putting the shape adaptation of mirror.
Multiple through holes are offered on bottom plate, one of through hole is located at the center of bottom plate, and remaining through hole is with bottom plate
The heart is the center of circle, is uniformly distributed along the circumference；Hole for injecting glue and spew groove are provided with picture frame.
The present invention has following technique effect：
Compared to prior art, pendulum mirror structure of the invention both has high rotation precision, and and can carries in certain environment
Reduce the stress deformation of structure under the conditions of lotus, so as to improve the environmental suitability and stability of pendulum mirror structure, ensureing on an equal basis
While rotation precision, do not increase production and adjustment cost, simple and convenient, cost is low, rotation precision is high, reliable with processing
The advantages that property is high.
Brief description of the drawings
Fig. 1 is scanning imagery camera light path sketch；
Fig. 2 is a kind of structural representation of high accuracy pendulum mirror structure for reducing stress deformation of the present invention；
Fig. 3 is a kind of structure sectional view of high accuracy pendulum mirror structure for reducing stress deformation of the present invention；
Fig. 4 is the structural representation of base；
Fig. 5 is the structural representation of pendulum microscope base；
Fig. 6 is the structural representation of left rotary shaft；
Fig. 7 is the structural representation of right spindle；
Each mark is respectively in figure：1st, base, 2, pendulum microscope base, 3, pendulum mirror, 4, left rotary shaft, 5, right spindle, 6, rolling bearing,
7th, the outer trim ring of bearing, 8, trim ring in bearing, 9, bearing spacer, 10 pendulum mirrors, which are repaiied, cuts pad, 11, screw, 12, block, 13, picture frame, 14,
Bottom plate, 15, stress relief groove, 16, connecting portion, 17, connecting plate, 18, the through hole on pillar, 19, pillar.
Embodiment
With reference to embodiment, the present invention is described in further detail, and structure member of the invention is not limited only to following
Embodiment.
Such as Fig. 2 to Fig. 7, the invention provides a kind of high accuracy pendulum mirror structure for reducing stress deformation, including base 1, pendulum
Mirror 3, pendulum microscope base 2 and two rotating shafts, base 1 are U-shaped structure, and bottom is equipped with connecting hole, can be fixed by the present invention by connecting hole
On the table；Two rotating shafts are coaxial, and base is provided with two pillars 19, are equipped with the isometry position on two pillars
Through hole；Pendulum mirror is fixed on pendulum microscope base；Two rotating shafts are respectively left rotary shaft 4 and right spindle 5, and left rotary shaft and right spindle are installed respectively
In a through hole of pillar；Left rotary shaft and right spindle include bearing pin and the rolling bearing 6 being enclosed on bearing pin, two bearing pin phases
To one end be provided with connecting plate 17；
The relative both ends of pendulum microscope base are provided with connecting portion 16, the connecting portion connection with the connecting plate and right spindle of left rotary shaft respectively
Plate is fixedly connected；
Stress relief groove 15 is equipped with the connecting plate and connecting portion, stress relief groove is the narrow and small seam opened on part
Gap, when environmental load changes, the width of stress relief groove can increase or reduce therewith, and it designs width should be according to structure
The correlation theory such as mechanics and thermodynamics is calculated, i.e., in some environmental load excursion, the width of stress relief groove is big
The small mechanical property that both can guarantee that as total, and can ensure to reduce stress deformation to greatest extent.
The other end of two bearing pins is equipped with threaded connection section；Bearing pin is provided with the He of block 12 for spacing rolling bearing
Bearing trim ring, rolling bearing is between corresponding block and bearing trim ring, therefore, in the coaxial of through hole of the pendulum mirror on pillar
When axis freely rotates, it can prevent that put mirror moves to the left or to the right；Bearing trim ring includes trim ring 8 and the outer trim ring 7 of bearing in bearing,
To eliminate gap, ensureing precision, thus bearing spacer 9 is installed between two angular contact ball bearings；Trim ring and axle in bearing
Hold outer trim ring and be provided with internal thread and externally threaded annulus；The upper surface of trim ring and the outer trim ring of bearing is provided with conveniently in bearing
The technology groove of installation operation.
Bearing internal pressure snare is connected on the threaded connection section of bearing pin, is fixedly connected with bearing pin；The outer trim ring of bearing is fixed with pillar
Connection.
Trim ring and bearing external pressure enclose rotating shaft and the work to be interfixed on rolling bearing, rolling bearing and base in bearing
With rolling bearing is angular contact ball bearing and deep groove ball bearing.
It is equipped with through hole on connecting plate and connecting portion, passes through screw between the through hole on through hole and connecting portion on connecting plate
11 threaded connections.
Repaiied between connecting portion and corresponding connecting plate provided with pendulum mirror and cut pad.Pendulum mirror, which is repaiied, cuts pad 10 and common planchet chip architecture phase
Together, during adjustment, can repair as needed grind pendulum mirror repair cut the thickness equidimension of pad 10 reach the design of the pendulum high rotation precision of mirror will
Ask.
The axis of rolling of left rotary shaft contracts two angular contact ball bearings, and the two angular contact ball bearings are back-to-back to be socketed in bearing pin
On, the rolling bearing of right spindle is deep groove ball bearing.
On connecting plate and the stress relief groove of connecting portion has three, on connecting plate and connecting portion three stress relief grooves
In two laterally set, another is vertically arranged.
Pendulum microscope base includes picture frame 13 and bottom plate 14, and picture frame is connected with bottom plate forms a barrel, in pendulum mirror insertion barrel,
The reflecting surface of pendulum mirror is higher by barrel, and outer or concordant with barrel (i.e. pendulum mirror 3 is embedded in tubbiness in addition to reflecting surface by remaining each face
In body 2), put and be filled with buffering adhesive between mirror and pendulum microscope base.Wherein, buffering adhesive can be silicon rubber.
Mirror trough is put with putting the shape adaptation of mirror.
Multiple through holes are offered on bottom plate, one of through hole is located at the center of bottom plate, and remaining through hole of bottom plate is with bottom plate
Center be the center of circle, be uniformly distributed along the circumference, buffering adhesive can be noted by through hole on bottom plate, pendulum mirror is connected with putting microscope base；On picture frame
Hole for injecting glue and spew groove are provided with, buffering adhesive is noted by hole for injecting glue, the Auxiliary support for putting mirror 3 can be acted on.
In work, pendulum mirror 3 is connected with pendulum both microscope bases 2, does not put the equal reduction of fractions to a common denominator of connecting portion of the opposite end of microscope base 3 not and left rotary shaft
4 and right spindle 5 be connected, rolling bearing 6 and base 1 form revolute pair, that is, putting mirror 3 can be around the coaxial axis of the through hole on pillar
Freely rotate.
Under the influence of the load such as environment temperature, stress deformation can occur for pendulum mirror, because pendulum mirror normal direction size is smaller therefore become
Shape amount very little can be neglected, though the deformation on other two direction is big, because pendulum mirror with pendulum microscope base is circumferential does not contact directly, the two it
Between the buffering adhesive that injects form flexible support, that is, put mirror stress deformation will not or minimal amount be delivered on pendulum microscope base, therefore, pendulum
Influence of the stress deformation of mirror itself to rotation precision can be neglected.It is smaller to put the edge pendulum mirror normal direction size of microscope base, deflection very little,
Therefore also can be neglected, deflection is larger on other two direction, and put screwed hole that microscope base is set by left and right ends respectively with
Rotating shaft is connected, therefore stress deformation can be delivered in shafting by this annexation, so as to influence rotation precision.And it is foregoing in carry
Arrive：Put and be provided with stress relief groove, when deformation occurs, stress relief groove on the connecting portion of microscope base and the connecting plate of bearing pin
Width can change with environmental load and increase or reduce, and so as to play a part of eliminating stress, therefore can largely reduce axle
The stress deformation of system, so as to ensure that rotation precision, improve the functional reliability and stability of pendulum mirror.
Claims (6)
1. a kind of high accuracy pendulum mirror structure for reducing stress deformation, including base, pendulum mirror, pendulum microscope base and two rotating shafts, two turn
Axle is coaxial, it is characterised in that：
The base is provided with two pillars, and through hole is equipped with the isometry position on two pillars；Pendulum mirror is fixed on pendulum microscope base
On；Two rotating shafts are respectively left rotary shaft and right spindle, and left rotary shaft and right spindle are separately mounted in a through hole of pillar；Turn left
Axle and right spindle include bearing pin and the rolling bearing being enclosed on bearing pin, and the relative one end of two bearing pins is provided with connecting plate,
The relative both ends of pendulum microscope base are provided with connecting portion, the connecting portion respectively with the connecting plate of left rotary shaft and the connecting plate of right spindle
It is fixedly connected；
Stress relief groove is equipped with the connecting plate and connecting portion；
The other end of two bearing pins is equipped with threaded connection section；Bearing pin is provided with block and bearing pressure for spacing rolling bearing
Circle, rolling bearing is between corresponding block and bearing trim ring；Bearing trim ring includes trim ring and the outer trim ring of bearing in bearing；
Bearing internal pressure snare is connected on the threaded connection section of bearing pin, is fixedly connected with bearing pin；The outer trim ring of bearing is fixedly connected with pillar；
Pendulum microscope base includes picture frame and bottom plate, and picture frame is connected with bottom plate forms a barrel, and pendulum mirror is embedded in the barrel, puts mirror
Reflecting surface be higher by barrel or concordant with barrel, put and be filled with buffering adhesive between mirror and pendulum microscope base；
Offer multiple through holes on bottom plate, one of through hole is located at the center of bottom plate, remaining through hole using the center of bottom plate as
The center of circle, it is uniformly distributed along the circumference；Hole for injecting glue and spew groove are provided with picture frame.
2. the high accuracy pendulum mirror structure according to claim 1 for reducing stress deformation, it is characterised in that：Two angular contact balls
Bearing spacer is installed between bearing.
3. the high accuracy pendulum mirror structure according to claim 2 for reducing stress deformation, it is characterised in that：Connecting plate and connection
It is equipped with through hole in portion, is connected between the through hole on through hole and connecting portion on connecting plate by screw thread.
4. the high accuracy pendulum mirror structure according to claim 3 for reducing stress deformation, it is characterised in that：Connecting portion with it is corresponding
Connecting plate between be provided with pendulum mirror and repair and cut pad.
5. the high accuracy pendulum mirror structure according to claim 4 for reducing stress deformation, it is characterised in that：The rolling of left rotary shaft
Bearing includes two angular contact ball bearings, and the two angular contact ball bearings are back-to-back to be socketed on bearing pin, the axis of rolling of right spindle
It is deep groove ball bearing to hold.
6. high accuracy pendulum mirror structure according to any one of claims 1 to 5, it is characterised in that：
Stress relief groove on connecting plate with connecting portion has three, on connecting plate and in three stress relief grooves of connecting portion
Two transverse directions are set, another is vertically arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510608211.8A CN105204159B (en) | 2015-09-22 | 2015-09-22 | Reduce stress deformation's high accuracy pendulum mirror structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510608211.8A CN105204159B (en) | 2015-09-22 | 2015-09-22 | Reduce stress deformation's high accuracy pendulum mirror structure |
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| Publication Number | Publication Date |
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| CN105204159A CN105204159A (en) | 2015-12-30 |
| CN105204159B true CN105204159B (en) | 2017-12-19 |
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| CN201510608211.8A Active CN105204159B (en) | 2015-09-22 | 2015-09-22 | Reduce stress deformation's high accuracy pendulum mirror structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107703600A (en) * | 2017-11-14 | 2018-02-16 | 长春理工大学 | The coaxiality adjusting method and device of gyroaxis and optical axis based on double wedges |
| CN110941084B (en) * | 2019-12-19 | 2021-04-09 | 中国科学院长春光学精密机械与物理研究所 | Satellite-borne scanning mechanism |
| CN112433338B (en) * | 2020-11-27 | 2021-12-14 | 中国科学院西安光学精密机械研究所 | Swing mirror assembly, swing mirror assembly assembling and adjusting system and assembling and adjusting method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205067864U (en) * | 2015-09-22 | 2016-03-02 | 中国科学院西安光学精密机械研究所 | Reduce stress deformation's high accuracy pendulum mirror structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10239612A (en) * | 1997-02-28 | 1998-09-11 | Canon Inc | Deflection scanning device |
| CN2755631Y (en) * | 2004-12-31 | 2006-02-01 | 中国科学院西安光学精密机械研究所 | Swing mirror |
| CN102879902B (en) * | 2012-10-08 | 2014-10-22 | 同济大学 | Cam-driven oscillating mirror mechanism |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205067864U (en) * | 2015-09-22 | 2016-03-02 | 中国科学院西安光学精密机械研究所 | Reduce stress deformation's high accuracy pendulum mirror structure |
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