CN105204159A - Reduce stress deformation's high accuracy pendulum mirror structure - Google Patents
Reduce stress deformation's high accuracy pendulum mirror structure Download PDFInfo
- Publication number
- CN105204159A CN105204159A CN201510608211.8A CN201510608211A CN105204159A CN 105204159 A CN105204159 A CN 105204159A CN 201510608211 A CN201510608211 A CN 201510608211A CN 105204159 A CN105204159 A CN 105204159A
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- bearing
- pendulum
- pendulum mirror
- hole
- connecting portion
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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
- 230000006978 adaptation Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 description 9
- 230000003287 optical effect Effects 0.000 description 8
- 238000003384 imaging method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 230000000153 supplemental 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
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- 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 precision pendulum mirror construction applications, particularly relate to the high precision scanning imaging camera pendulum mirror under environmental impact.
Background technology
When general scanning imagery camera works, make the target of different field of view angle enter optical system by the rotation of putting mirror thus complete scanning imagery function, its light path sketch as shown in Figure 1, light is turned back through overswing mirror and is entered rear optical system and complete imaging function, under camera duty, pendulum mirror needs to rotate within the scope of certain angle, and namely α angle changes within the specific limits.As shown in Figure 1, scanning imagery is mutually confidential completes high-quality imaging function, will ensure higher pendulum mirror rotation precision, and the mounting structure putting mirror must have enough abilities resisting the stress deformation that environmental load produces.
In prior art, in the stage of debuging, the pendulum mirror of general scanning imagery camera will ensure that minute surface is parallel with its rotor shaft direction or coplanar, minute surface is parallel with rear optical system optical axis or coplanar perpendicular to the normal direction of its rotating shaft, and the rotating shaft of pendulum mirror is vertical with rear optical system optical axis.Above requirement can be reached relatively easily in debug process, but when camera real work, due to the change of the environmental baselines such as temperature, the connecting portion of pendulum mirror and constitutional detail can produce stress unavoidably, stress can cause the change of pendulum mirror mirror shape on the one hand, rotating shaft precision can be reduced on the other hand thus cause pendulum mirror and rotating shaft and rear optical system optical axis relative position relation thereof to change, and then affecting image quality.Therefore, the imaging precision of scanning imagery camera under complex working condition be ensured, design a kind of high precision pendulum mirror structure that can reduce stress deformation very necessary.
Summary of the invention
For the problems that the pendulum mirror rotating shaft of scanning imagery camera common in prior art causes under the environmental baselines such as temperature variation, and the problem such as operating mode when considering that it works on vehicle-mounted and airborne platform is complicated, imaging requirements is high, the invention provides a kind of high precision pendulum mirror structure reducing stress deformation.
Technical scheme of the present invention is as follows:
Reduce a high precision pendulum mirror structure for stress deformation, comprise base, pendulum mirror, pendulum microscope base and two rotating shafts, two rotating shafts are coaxial, and its special character is:
Described base is provided with two pillars, and the isometry position place on two pillars is equipped with through hole; Pendulum mirror is fixed on pendulum microscope base; Two rotating shafts are respectively left rotary shaft and right spindle, and left rotary shaft and right spindle are arranged in a through hole of pillar respectively; Left rotary shaft and right spindle include bearing pin and are enclosed within rolling bearing on bearing pin, and one end that two bearing pins are relative is provided with web joint,
The two ends that pendulum microscope base is relative are provided with connecting portion, and described connecting portion is fixedly connected with the web joint of right spindle with the web joint of left rotary shaft respectively;
Described web joint and connecting portion are equipped with stress relief groove.
The other end of two bearing pins is equipped with the section of being threaded; Bearing pin is provided with block for spacing rolling bearing and bearing trim ring, and rolling bearing is between corresponding block and bearing trim ring; Bearing trim ring comprises trim ring and the outer trim ring of bearing in bearing;
In bearing, trim ring is socketed in the section of being threaded of bearing pin, is fixedly connected with bearing pin; The outer trim ring of bearing is fixedly connected with pillar.
Between two angular contact ball bearings, bearing spacer is installed.
Web joint and connecting portion are equipped with through hole, are connected by screw thread between the through hole on web joint and the through hole on connecting portion.
Be provided with pendulum mirror between connecting portion and corresponding web joint to repair and cut pad.
The rolling bearing of left rotary shaft comprises two angular contact ball bearings, and two angular contact ball bearings are back-to-back is socketed on bearing pin for this, and the rolling bearing of right spindle is deep groove ball bearing.
On web joint and the stress relief groove of connecting portion all have three, two horizontally sets on web joint and in three stress relief groove of connecting portion, another vertically arranges.
Pendulum microscope base comprises picture frame and base plate, and picture frame and base plate are connected formation one barrel, and pendulum mirror embeds in described barrel, and the reflecting surface of pendulum mirror exceeds barrel or concordant with barrel, pendulum mirror and put between microscope base and be filled with buffering adhesive.
Pendulum microscope base and the shape adaptation putting mirror.
Base plate offers multiple through hole, one of them through hole is positioned at the center of base plate, and remaining through hole is the center of circle with the center of base plate, is uniformly distributed along the circumference; Picture frame has hole for injecting glue and spew groove.
The present invention has following technique effect:
Compared to prior art, pendulum mirror structure of the present invention had both had high rotation precision, the stress deformation of structure can be reduced again under certain environmental load condition, thus improve environmental suitability and the stability of pendulum mirror structure, while the equal rotation precision of guarantee, do not increase produce and debug cost, have processing simple and convenient, cost is low, rotation precision is high, high reliability.
Accompanying drawing explanation
Fig. 1 is scanning imagery camera light path sketch;
Fig. 2 is a kind of structural representation reducing the high precision pendulum mirror structure of stress deformation of the present invention;
Fig. 3 is a kind of structure cut-open view reducing the high precision pendulum mirror structure of 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;
In figure, each mark is respectively: 1, base, and 2, pendulum microscope base, 3, pendulum mirror, 4, left rotary shaft, 5, right spindle, 6, rolling bearing, 7, the outer trim ring of bearing, 8, trim ring in bearing, 9, bearing spacer, 10 pendulum mirrors are repaiied and are cut pad, 11, screw, 12, block, 13, picture frame, 14, base plate, 15, stress relief groove, 16, connecting portion, 17, web joint, 18, through hole on pillar, 19, pillar.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, and structure member of the present invention is not limited only to following examples.
As Fig. 2 to Fig. 7, the invention provides a kind of high precision pendulum mirror structure reducing stress deformation, comprise base 1, pendulum mirror 3, pendulum microscope base 2 and two rotating shafts, base 1 is U-shaped structure, and bottom is equipped with connecting hole, the present invention is fixed on the table by connecting hole; Two rotating shafts are coaxial, and the isometry position place that base is provided with on two pillars, 19, two pillars is equipped with 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 arranged in a through hole of pillar respectively; Left rotary shaft and right spindle include bearing pin and rolling bearing 6, two one end that bearing pin is relative be enclosed within bearing pin are provided with web joint 17;
The two ends that pendulum microscope base is relative are provided with connecting portion 16, and connecting portion is fixedly connected with the web joint of right spindle with the web joint of left rotary shaft respectively;
Described web joint and connecting portion are equipped with stress relief groove 15, the small gaps that namely stress relief groove is opened on part, when environmental load changes, the width of stress relief groove can increase thereupon or reduce, it designs wide should calculating according to the correlation theory such as structural mechanics and thermodynamics, namely in certain environmental load variation range, the width size of stress relief groove can ensure the mechanical property into total, can ensure again to reduce stress deformation to greatest extent.
The other end of two bearing pins is equipped with the section of being threaded; Bearing pin is provided with block 12 for spacing rolling bearing and bearing trim ring, and rolling bearing, between corresponding block and bearing trim ring, therefore, when the coaxial axis putting the through hole of mirror on pillar freely rotates, can prevent putting mirror and move to the left or to the right; Bearing trim ring comprises trim ring 8 and the outer trim ring 7 of bearing in bearing, for eliminating gap, ensureing precision, thus between two angular contact ball bearings, is provided with bearing spacer 9; In bearing, trim ring and the outer trim ring of bearing are all be provided with internal thread and externally threaded annulus; In bearing, the upper surface of trim ring and the outer trim ring of bearing all has the convenient technology groove installing operation.
In bearing, trim ring is socketed in the section of being threaded of bearing pin, is fixedly connected with bearing pin; The outer trim ring of bearing is fixedly connected with pillar.
In bearing, trim ring and bearing external pressure enclose the effect that rotating shaft and rolling bearing, rolling bearing and base interfix, and rolling bearing is angular contact ball bearing and deep groove ball bearing.
Web joint and connecting portion are equipped with through hole, the through hole on web joint and being threaded by screw 11 between the through hole on connecting portion.
Be provided with pendulum mirror between connecting portion and corresponding web joint to repair and cut pad.Pendulum mirror repaiies that to cut pad 10 identical with common ring washer structure, when debuging, can repair as required and grind pendulum mirror and repair the thickness equidimension of cutting pad 10 and reach the designing requirement of putting mirror high rotation precision.
The axis of rolling of left rotary shaft contracts two angular contact ball bearings, and two angular contact ball bearings are back-to-back is socketed on bearing pin for this, and the rolling bearing of right spindle is deep groove ball bearing.
On web joint and the stress relief groove of connecting portion all have three, two horizontally sets on web joint and in three stress relief groove of connecting portion, another vertically arranges.
Pendulum microscope base comprises picture frame 13 and base plate 14, picture frame and base plate are connected formation one barrel, pendulum mirror embeds in barrel, the reflecting surface of pendulum mirror exceeds barrel outer or concordant with barrel (namely putting mirror 3 to be embedded in barrel 2 by all the other each faces except reflecting surface), is filled with buffering adhesive between pendulum mirror and pendulum microscope base.Wherein, buffering adhesive can be silicon rubber.
Pendulum mirror groove and the shape adaptation putting mirror.
Base plate offers multiple through hole, one of them through hole is positioned at the center of base plate, and remaining through hole of base plate is the center of circle with the center of base plate, is uniformly distributed along the circumference, and by the through hole note buffering adhesive on base plate, pendulum mirror is connected with pendulum microscope base; Picture frame has hole for injecting glue and spew groove, note buffering adhesive by hole for injecting glue, can to the supplemental support effect of pendulum mirror 3.
In work, pendulum mirror 3 is connected with pendulum both microscope bases 2, and the equal reduction of fractions to a common denominator of connecting portion of pendulum microscope base 3 opposite end is not connected with left rotary shaft 4 and right spindle 5, and rolling bearing 6 and base 1 form revolute pair, and namely pendulum mirror 3 can the coaxial axis of through hole on pillar freely rotate.
Under the impact of the load such as environment temperature, can stress deformation be there is in pendulum mirror, because pendulum mirror normal direction size less event deflection very I is ignored, though the distortion in all the other both directions is large, but because pendulum mirror does not directly contact with pendulum microscope base circumference, the buffering adhesive injected therebetween forms flexible support, namely put mirror stress deformation can not or seldom amount be delivered to and put on microscope base, therefore, the stress deformation of putting mirror self can be ignored the impact of rotation precision.The edge pendulum mirror normal direction size of pendulum microscope base is less, deflection is very little, therefore also can ignore, in all the other both directions, deflection is larger, and the threaded hole that pendulum microscope base is arranged by two ends, left and right is connected with rotating shaft respectively, therefore stress deformation can be delivered in axle system by this annexation, thus affect rotation precision.And aforementioned in mention: pendulum the connecting portion of microscope base and the web joint of bearing pin on all have stress relief groove, when deformation occurs, the width of stress relief groove can increase with environmental load change or reduce, thus play the effect eliminated stress, therefore the stress deformation of axle system can be reduced largely, thus ensure that rotation precision, improve functional reliability and the stability of pendulum mirror.
Claims (10)
1. reduce a high precision pendulum mirror structure for stress deformation, comprise base, pendulum mirror, pendulum microscope base and two rotating shafts, two rotating shafts are coaxial, it is characterized in that:
Described base is provided with two pillars, and the isometry position place on two pillars is equipped with through hole; Pendulum mirror is fixed on pendulum microscope base; Two rotating shafts are respectively left rotary shaft and right spindle, and left rotary shaft and right spindle are arranged in a through hole of pillar respectively; Left rotary shaft and right spindle include bearing pin and are enclosed within rolling bearing on bearing pin, and one end that two bearing pins are relative is provided with web joint,
The two ends that pendulum microscope base is relative are provided with connecting portion, and described connecting portion is fixedly connected with the web joint of right spindle with the web joint of left rotary shaft respectively;
Described web joint and connecting portion are equipped with stress relief groove.
2. the high precision pendulum mirror structure of reduction stress deformation according to claim 1, is characterized in that:
The other end of two bearing pins is equipped with the section of being threaded; Bearing pin is provided with block for spacing rolling bearing and bearing trim ring, and rolling bearing is between corresponding block and bearing trim ring; Bearing trim ring comprises trim ring and the outer trim ring of bearing in bearing;
In bearing, trim ring is socketed in the section of being threaded of bearing pin, is fixedly connected with bearing pin; The outer trim ring of bearing is fixedly connected with pillar.
3. the high precision pendulum mirror structure of reduction stress deformation according to claim 2, is characterized in that: be provided with bearing spacer between two angular contact ball bearings.
4. the high precision pendulum mirror structure of reduction stress deformation according to claim 3, be is characterized in that: web joint and connecting portion are equipped with through hole, is connected between the through hole on web joint and the through hole on connecting portion by screw thread.
5. the high precision pendulum mirror structure of reduction stress deformation according to claim 4, is characterized in that: be provided with pendulum mirror between connecting portion and corresponding web joint and repair and cut pad.
6. the high precision pendulum mirror structure of reduction stress deformation according to claim 5, it is characterized in that: the rolling bearing of left rotary shaft comprises two angular contact ball bearings, two angular contact ball bearings are back-to-back is socketed on bearing pin for this, and the rolling bearing of right spindle is deep groove ball bearing.
7., according to claim 1 to 6 arbitrary described high precision pendulum mirror structure, it is characterized in that:
On web joint and the stress relief groove of connecting portion all have three, two horizontally sets on web joint and in three stress relief groove of connecting portion, another vertically arranges.
8. the high precision pendulum mirror structure of reduction stress deformation according to claim 7, it is characterized in that: pendulum microscope base comprises picture frame and base plate, picture frame and base plate are connected formation one barrel, pendulum mirror embeds in described barrel, the reflecting surface of pendulum mirror exceeds barrel or concordant with barrel, is filled with buffering adhesive between pendulum mirror and pendulum microscope base.
9. the high precision pendulum mirror structure of reduction stress deformation according to claim 8, is characterized in that: pendulum microscope base and the shape adaptation putting mirror.
10. the high precision pendulum mirror structure of reduction stress deformation according to claim 9, it is characterized in that: base plate offers multiple through hole, one of them through hole is positioned at the center of base plate, and remaining through hole is the center of circle with the center of base plate, is uniformly distributed along the circumference; Picture frame has hole for injecting glue and spew groove.
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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105204159A true CN105204159A (en) | 2015-12-30 |
| CN105204159B CN105204159B (en) | 2017-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510608211.8A Active CN105204159B (en) | 2015-09-22 | 2015-09-22 | Reduce stress deformation's high accuracy pendulum mirror structure |
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| Country | Link |
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| CN (1) | CN105204159B (en) |
Cited By (3)
| 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 |
| CN110941084A (en) * | 2019-12-19 | 2020-03-31 | 中国科学院长春光学精密机械与物理研究所 | Satellite-borne scanning mechanism |
| CN112433338A (en) * | 2020-11-27 | 2021-03-02 | 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 (4)
| 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 |
| CN102879902A (en) * | 2012-10-08 | 2013-01-16 | 同济大学 | Cam-driven oscillating mirror mechanism |
| 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 |
-
2015
- 2015-09-22 CN CN201510608211.8A patent/CN105204159B/en active Active
Patent Citations (4)
| 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 |
| CN102879902A (en) * | 2012-10-08 | 2013-01-16 | 同济大学 | Cam-driven oscillating mirror mechanism |
| 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 |
Cited By (4)
| 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 |
| CN110941084A (en) * | 2019-12-19 | 2020-03-31 | 中国科学院长春光学精密机械与物理研究所 | Satellite-borne scanning mechanism |
| 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 |
| CN112433338A (en) * | 2020-11-27 | 2021-03-02 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105204159B (en) | 2017-12-19 |
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