CN102867561A - High-precision displacement device for focal plane of space-borne imaging instrument - Google Patents
High-precision displacement device for focal plane of space-borne imaging instrument Download PDFInfo
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- CN102867561A CN102867561A CN201110184920XA CN201110184920A CN102867561A CN 102867561 A CN102867561 A CN 102867561A CN 201110184920X A CN201110184920X A CN 201110184920XA CN 201110184920 A CN201110184920 A CN 201110184920A CN 102867561 A CN102867561 A CN 102867561A
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Abstract
The invention provides a high-precision displacement device for a focal plane of a space-borne imaging instrument. The device is used for displacing a displaced imaging sensor of an imaging instrument for celestial imaging or solar imaging to a focal plane of a camera. The device comprises a stepping motor and is characterized in that the device further comprises a worm, a hollow turbine, a cylindrical hollow internal thread sleeve and a cylindrical hollow external thread sleeve; the upper surface of the cylindrical hollow external thread sleeve constitutes an annular instrument installation platform; the hollow turbine, the cylindrical hollow internal thread sleeve and the cylindrical hollow external thread sleeve are arranged coaxially to form a hollow vertical channel, of which the diameter is greater than 15mm; the stepping motor drives the worm to rotate and the worm drives the hollow turbine engaging therewith to rotate; and the hollow turbine further drives the cylindrical hollow internal thread sleeve fixedly and coaxially arranged inside the hollow turbine to rotate synchronously, and the rotated internal thread sleeve makes the external thread sleeve sleeved on the upper part of the internal thread sleeve shift up and down under the control of a limiting mechanism through thread coupling.
Description
Technical field
The present invention relates to a kind of high precision position moving device, particularly a kind of spaceborne Image-forming instrument focal plane high precision position moving device.
Background technology
Spaceborne Image-forming instrument is in the situation that experience transportation, emission and space temperature change, original position can be departed from the focal plane, when causing operation on orbit, image blur, so at present the high precision Image-forming instrument the advanced person of rail all has the focal plane gearshift basically, if find image blurringly, by ground remote control imaging sensor is displaced on the camera focal plane again, to obtain high-quality image.
Only have on the SOLAR-B satellite Solar X-Ray Telescope to have the focal plane on tens of the satellites of up to this point having launched and adjust function.The rotation of the focal plane micrometric displacement adjustment dependence control step motor of Solar X-Ray Telescope realizes on the SOLAR-B satellite, stepper motor rotating drive one connecting rod, one end of connecting rod is fixed on the imaging sensor, imaging sensor is fixed by a flexible wide metal tape, stepper motor rotates like this, drive link, thus drive the imaging sensor one-dimensional translation, thus realize the focal plane adjusting.This focal plane displacement device structure is complicated, and volume is larger, and stroke is little, and controlled range is little, development cost is high.
Summary of the invention
The object of the invention is, complicated for the focal plane displacement device structure that the spaceborne Image-forming instrument that overcomes prior art adopts, volume is larger, and stroke is little, the problem that controlled range is little, development cost is high the invention provides a kind of spaceborne Image-forming instrument focal plane high precision position moving device.
A kind of spaceborne Image-forming instrument focal plane high precision position moving device that the present invention proposes is specially for the high precision Image-forming instrument of celestial body imaging or sun imaging, this quasi-instrument is very tight to noise control, the general cold noise that reduces sensor of deep space spoke that all needs, so imaging sensor and deep space spoke cold drawing adopt and be rigidly connected, this adds displacement control device to sensor has increased a lot of difficulty.
To achieve these goals, the invention provides a kind of spaceborne Image-forming instrument focal plane high precision position moving device, the imaging sensor that is used for occuring the Image-forming instrument of the celestial body imaging that is shifted or sun imaging is displaced to the camera focal plane, this device comprises stepper motor, it is characterized in that described device also comprises: worm screw, hollow turbine, hollow inner thread sleeve and the external thread sleeve of cylindricality; The upper surface looping apparatus installation platform that the hollow external thread sleeve of described cylindricality is; Described hollow turbine, hollow inner thread sleeve and the coaxial setting of external thread sleeve of cylindricality form a hollow vertical path, and the diameter of this path is greater than 15mm.
Described stepper motor drives worm screw and rotates, and this worm screw drives the hollow turbine rotation that is engaged with; Described hollow turbine further drives the hollow inner thread sleeve of the inner coaxial cylindricality that is fixedly installed and rotates synchronously, and the inner thread sleeve of this rotation makes sheathed external thread sleeve at an upper portion thereof under position-limit mechanism control upper and lower displacement occur by screw thread couple.
Optionally, the hollow inner thread sleeve of described hollow turbine and cylindricality is fixed on the cylindrical stent of a hollow by a hollow thin-wall coaxial bearing, and the diameter of described hollow thin-wall bearing and the vertical hollow passage of hollow cylindrical support formation is greater than 15mm.
Optionally, the cylindrical stent of described hollow is fixedly installed on the mounting seat.
Optionally, described position-limit mechanism comprises the spacing hole of Z-shaped slide block and coupling thereof, and an end of this Z-shaped slide block is connected firmly with the apparatus installation platform, and the other end slidably cooperates with the spacing hole that is vertically set on L shaped; Described Z-shaped slide block supports by a vertically disposed elastic supporting member for supporting optical member.Described spacing hole is the rectangle spacing hole.
The course of work of the present invention is: when stepper motor drives the worm screw rotation, the hollow turbine rotation of worm drive, the hollow internal thread of cylindricality that is connected with hollow turbine rigid body rotates synchronously, and this inner thread sleeve further drives the external thread sleeve that is sheathed on its top and apparatus installation platform one by screw thread couple and under the restriction of position-limit mechanism upper and lower displacement occurs.In the above-mentioned course of work, adjust displacement accuracy by the pitch, the number of teeth of hollow turbine or the pitch of the coupled threads between inner thread sleeve and the external thread sleeve that change worm screw, the stroke of the length adjustment displacement by changing the screw thread between inner thread sleeve and the external thread sleeve.
The useful technique effect of a kind of spaceborne Image-forming instrument of the present invention focal plane high precision position moving device is:
1. spaceborne Image-forming instrument of the present invention focal plane high precision displacement apparatus structure has adopted turbine and worm to cooperate coupling precession thread mechanism to realize sub-micrometer precision, large travel displacement control.
2. by the attributive function of turbine and worm and the position-limit mechanism of precession platform, whole device is similar to an integral body, and under the non-rotary state of motor, mounting platform can not affect the initial position of erecting bed in the impact of extraneous impulse force.
3. apparatus of the present invention are simple in structure and to have a cost lower, volume is little, lightweight, high reliability, and whole device can be used for the cold heat conduction web member of deep space spoke, realize the adjustment of focal plane on the one hand, satisfy on the other hand deep space spoke cool condition and can directly be fixed on the spaceborne Image-forming instrument CCD chill surface.
The present invention be directed in sum the high precision Image-forming instrument of celestial body imaging or sun imaging, design a kind of displacement accuracy up to the spaceborne Image-forming instrument focal plane high precision position moving device of 0.1um.In the time of in orbit, by the number of drive pulses of control step motor, accurately control CCD and near the focal position, adjust, reach best imaging effect.This system architecture is compact, control easy, reliability is high, strong, the hot conductive cross-section of anti-vibrating and impact ability is large, is the ideal device of the cold focal plane of deep space spoke high precision adjustment.
Description of drawings
Fig. 1 is the general structure synoptic diagram of spaceborne Image-forming instrument of the present invention focal plane high precision position moving device;
Fig. 2 is the sectional view of spaceborne Image-forming instrument of the present invention focal plane high precision position moving device.
The accompanying drawing sign:
101, stepper motor 102, instrument mounting platform 103-a, worm screw
103-b, hollow turbine 104, position-limit mechanism 105, the hollow external thread sleeve of cylindricality
106, mounting seat 107, the hollow inner thread sleeve 108 of cylindricality, elastic supporting piece
201, hollow cylinder support 202, thin-wall bearing
Embodiment
Below in conjunction with the drawings and specific embodiments a kind of spaceborne Image-forming instrument of the present invention focal plane high precision position moving device is described in detail.
Turbine and worm driving mechanism of the present invention is driven by stepper motor 101, and worm screw 103-a is mounted and fixed on the motor shaft with stepper motor 101 axles are concentric, and the inwall of hollow turbine 103-b closely is linked in the bottom outer wall of the hollow inner thread sleeve 105 of cylindricality.The inwall of described thin-wall bearing 202 is fixed on the protruding hollow cylinder support 201 of mounting seat 106, and the outer wall of thin-wall bearing 202 closely is linked in hollow inner thread sleeve 107 inwalls of cylindricality.Described position-limit mechanism 104 comprises apparatus installation platform 102 hardwired Z-shaped slide blocks and the L bracket that is fixed on the mounting seat, the spacing hole that arranges on Z-shaped slide block and the L bracket is slidingly matched, position-limit mechanism 104 limits 102 rotations of apparatus installation platform, thereby realizes 102 upper and lower displacements of apparatus installation platform.There are the reducing gears such as turbine and worm and screw thread precession in this device, can realize the displacement accuracy that apparatus installation platform 0.1 μ m in focal plane is above.
Described turbine and worm driving mechanism, in the situation that stepper motor 101 rotates, by worm screw 103-a rotation is passed to the hollow inner thread sleeve 107 of cylindricality, turbine and worm is realized large reduction gear ratio, and restriction apparatus installation platform rotates in the situation that device does not power up simultaneously; Described stepper motor 101, thin-wall bearing 202 are fixed on the mounting seat 106, and the tight fit of the hollow inner thread sleeve of the outer ring of thin-wall bearing 202 and cylindricality is installed, and assurance precession mechanism can fix and can rotate.
Described thin-wall bearing 202, hollow cylindrical support 201, the hollow inner thread sleeve 107 of cylindricality and external thread sleeve 105 coaxial settings, form the vertical passage of a hollow, the diameter of described path is greater than 15mm, is convenient to weight reduction on the one hand, guarantee on the other hand light path without block by.
As concrete an application of the present invention, it can satisfy the domestic solar X-ray of developing and the telescopical out of focus high precision of extreme ultraviolet is adjusted needs.
Fig. 1 is the general structure synoptic diagram of spaceborne Image-forming instrument of the present invention focal plane high precision position moving device, as shown in Figure 1, a kind of spaceborne Image-forming instrument provided by the invention focal plane high precision position moving device comprises: drive motor 101, worm screw 103-a, hollow turbine 103-b, the hollow inner thread sleeve 107 of cylindricality, the hollow external thread sleeve 105 of cylindricality, mounting seat 106, thin-wall bearing 202, position-limit mechanism 104; Screw thread between the hollow external thread sleeve 105 of cylindricality and the inner thread sleeve 107 coincide mutually, the top apparatus installation platform 102 of external thread sleeve 105 is as the mounting platform of CCD, the outer wall of the hollow inner thread sleeve 107 of cylindricality and the tight fit of hollow turbine 103-b inwall, the tight fit in outer ring of the inwall of the hollow inner thread sleeve 107 of cylindricality and thin-wall bearing 202; inwall of thin-wall bearing 202 and the hollow cylinder support 201 tight fits that are fixed on the mounting seat 106; worm screw 103-a is mounted with step motor shaft is coaxial, stepper motor 101; L shaped position-limited rack all is fixed on the mounting seat 106.Because turbine and worm and gag lever post limit this device in the situation that motor does not rotate, whole device is in mechanical locking state, can not be subjected to displacement or rotate.
Fig. 2 is the sectional view of spaceborne Image-forming instrument of the present invention focal plane high precision position moving device, as can be seen from the figure be positioned at bottom be the hollow cylindrical support 204 of mounting seat 106 and its upper setting, described thin-wall bearing 202 is on fixedly hollow cylindrical support 201 is; The inwall wringing fit of the hollow inner thread sleeve of the outer wall of thin-wall bearing 202 and cylindricality 107 bottoms; The outer wall of described inner thread sleeve 107 bottoms is connected with turbine inwall rigid body, can realize the synchronous rotation of external thread sleeve 105 and turbine; The screw thread couple of the top of described inner thread sleeve 103-b and an external thread sleeve 105 inwalls, apparatus installation platform 102 one at this external thread sleeve 105 and its top, when the hollow inner thread sleeve 107 of described cylindricality rotates synchronously with hollow turbine 103-b, under the restriction of position-limit mechanism 104, drive hollow external thread sleeve 105 displacements of cylindricality and then drive 102 displacements of apparatus installation platform by coupling.
It should be noted last that above embodiment is only unrestricted in order to technical scheme of the present invention to be described.Although with reference to embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, technical scheme of the present invention is made amendment or is equal to replacement, do not break away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (5)
1. spaceborne Image-forming instrument focal plane high precision position moving device, the imaging sensor that is used for occuring the Image-forming instrument of the celestial body imaging that is shifted or sun imaging is displaced to the camera focal plane, this device comprises stepper motor, it is characterized in that described device also comprises: worm screw, hollow turbine, hollow inner thread sleeve and the external thread sleeve of cylindricality; The upper surface looping apparatus installation platform that the hollow external thread sleeve of described cylindricality is; Described hollow turbine, hollow inner thread sleeve and the coaxial setting of external thread sleeve of cylindricality form a hollow vertical path, and the diameter of this path is greater than 15mm;
Described stepper motor drives worm screw and rotates, and this worm screw drives the hollow turbine rotation that is engaged with; Described hollow turbine further drives the hollow inner thread sleeve of the inner coaxial cylindricality that is fixedly installed and rotates synchronously, and the inner thread sleeve of this rotation makes sheathed external thread sleeve at an upper portion thereof under position-limit mechanism control upper and lower displacement occur by screw thread couple.
2. spaceborne Image-forming instrument according to claim 1 focal plane high precision position moving device, it is characterized in that, the hollow inner thread sleeve of described hollow turbine and cylindricality is fixed on the cylindrical stent of a hollow by a hollow thin-wall coaxial bearing, described hollow thin-wall bearing, hollow cylindrical support and above-mentioned hollow turbine, hollow inner thread sleeve and the common hollow vertical path that forms of external thread sleeve of cylindricality.
3. spaceborne Image-forming instrument according to claim 2 focal plane high precision position moving device is characterized in that the cylindrical stent of described hollow is fixedly installed on the mounting seat.
4. spaceborne Image-forming instrument according to claim 1 focal plane high precision position moving device, it is characterized in that, described position-limit mechanism comprises the spacing hole of Z-shaped slide block and coupling thereof, one end of this Z-shaped slide block is connected firmly with the apparatus installation platform, and the other end slidably cooperates with the spacing hole that is vertically set on L shaped; Described Z-shaped slide block supports by a vertically disposed elastic supporting member for supporting optical member.
5. spaceborne Image-forming instrument according to claim 4 focal plane high precision position moving device is characterized in that described spacing hole is the rectangle spacing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110184920.XA CN102867561B (en) | 2011-07-04 | 2011-07-04 | High-precision displacement device for focal plane of space-borne imaging instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110184920.XA CN102867561B (en) | 2011-07-04 | 2011-07-04 | High-precision displacement device for focal plane of space-borne imaging instrument |
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| Publication Number | Publication Date |
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| CN102867561A true CN102867561A (en) | 2013-01-09 |
| CN102867561B CN102867561B (en) | 2015-03-18 |
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| CN201110184920.XA Expired - Fee Related CN102867561B (en) | 2011-07-04 | 2011-07-04 | High-precision displacement device for focal plane of space-borne imaging instrument |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802530A (en) * | 2017-02-28 | 2017-06-06 | 歌尔股份有限公司 | Focus control and camera module test device |
| CN107248328A (en) * | 2017-08-08 | 2017-10-13 | 苏州育龙科教设备有限公司 | Multimedia projection systems |
| CN108073015A (en) * | 2017-12-08 | 2018-05-25 | 中国科学院长春光学精密机械与物理研究所 | A kind of high-precision linear focus adjusting mechanism for space camera |
| CN108613693A (en) * | 2018-04-25 | 2018-10-02 | 合肥上城信息技术有限公司 | A kind of multi-angle regulation mounting bracket for measurement and control instrument |
| CN111812912A (en) * | 2020-08-03 | 2020-10-23 | 中国科学院长春光学精密机械与物理研究所 | Focal plane image rotating mechanism |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802530A (en) * | 2017-02-28 | 2017-06-06 | 歌尔股份有限公司 | Focus control and camera module test device |
| CN106802530B (en) * | 2017-02-28 | 2019-04-30 | 歌尔股份有限公司 | Focus control and camera module test device |
| CN107248328A (en) * | 2017-08-08 | 2017-10-13 | 苏州育龙科教设备有限公司 | Multimedia projection systems |
| CN108073015A (en) * | 2017-12-08 | 2018-05-25 | 中国科学院长春光学精密机械与物理研究所 | A kind of high-precision linear focus adjusting mechanism for space camera |
| CN108073015B (en) * | 2017-12-08 | 2020-03-13 | 中国科学院长春光学精密机械与物理研究所 | High-precision linear focusing mechanism for space camera |
| CN108613693A (en) * | 2018-04-25 | 2018-10-02 | 合肥上城信息技术有限公司 | A kind of multi-angle regulation mounting bracket for measurement and control instrument |
| CN111812912A (en) * | 2020-08-03 | 2020-10-23 | 中国科学院长春光学精密机械与物理研究所 | Focal plane image rotating mechanism |
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| CN102867561B (en) | 2015-03-18 |
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Address after: 100190 No. two south of Zhongguancun, Haidian District, Beijing 1 Patentee after: NATIONAL SPACE SCIENCE CENTER, CAS Address before: 100190 No. two south of Zhongguancun, Haidian District, Beijing 1 Patentee before: Space Science & Applied Research Centre, Chinese Academy of Sciences |
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