CN106342265B - Active optics accurate force actuator - Google Patents
Active optics accurate force actuatorInfo
- Publication number
- CN106342265B CN106342265B CN201010048054.7A CN201010048054A CN106342265B CN 106342265 B CN106342265 B CN 106342265B CN 201010048054 A CN201010048054 A CN 201010048054A CN 106342265 B CN106342265 B CN 106342265B
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- CN
- China
- Prior art keywords
- precision
- force actuator
- nut
- loadcell
- active optics
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Active optics accurate force actuator, relates to microadjustment precision mechanical design field, and it has solved existing force actuator structure and has lacked independence and flexibility, and expensive, the problem of maintenance process complexity. The inventive system comprises mechanical transmission mechanism and LoadCell (power sensor); Described mechanical transmission mechanism is made up of precision speed reduction device, shaft coupling, nut, precision lead screw gyroaxis and anti-rotation guider etc.; One end of described precision speed reduction device is connected with shaft coupling one end, the other end of shaft coupling is connected with one end of precision lead screw gyroaxis, the other end of described precision lead screw gyroaxis is connected with nut by screw thread, described nut is connected with one end of anti-rotation guider, being connected with power sensor of described anti-rotation guider, described LoadCell with being connected of needle-like elongate rod, needle-like elongate rod is connected with primary mirror transition piece. The present invention can verify thin mirror surface active optics system, be applied to Precision trimming mechanical-optical setup.
Description
Technical field
The invention belongs to microadjustment precision mechanical design field, be specifically related to for thin mirror surface active optics systemThe force actuator device that main mirror face is proofreaied and correct.
Background technology
Along with the development of Modern Astronomical technology, more and more higher to the requirement of imaging capability, require telescopeBore also increasing, traditional primary mirror is due to its weight, cost and support the sharply increase of difficulty etc.Can not meet the demands, therefore in telescopical development, develop active optics technology ripe gradually,Thin mirror surface active optics is exactly a part wherein. Thin mirror surface active optics utilizes thin speculum (to be generallyPrimary mirror) micro-elastic be out of shape to compensate telescopical primary mirror and secondary mirror and draw because gravity, temperature and wind carry etc.The systematic wavefront rising. In thin mirror surface active optics, force actuator is the executing agency of proofreading and correct minute surface,Output quantity is the active force supporting, thus require force actuator can realize the change of atomic weak output quantity,There is very high precision. In the time of change of external conditions, output quantity should keep stable, is not subject to the impact of external condition,Good reliability. Force actuator version is various, as lever construction form, and pressure (hydraulic pressure or air pressure) knotConfiguration formula etc. In each large telescope, all have application abroad, but independent research less at home mainly complied withBy buying more external commercially produced products, lack independence and flexibility, and also expensive, maintenance processComplicated. And existing force actuator is difficult to control to the active force of minute surface, affected by external condition larger.
Summary of the invention
The present invention lacks independence and flexibility for solving existing force actuator structure, and expensive,The problem of maintenance process complexity, provides a kind of active optics accurate force actuator.
The inventive system comprises driving control system, mechanical transmission mechanism and LoadCell; It also comprises pinShape elongate rod and primary mirror transition piece; Described mechanical transmission mechanism is by precision speed reduction device, shaft coupling, nut, essenceClose leading screw gyroaxis and anti-rotation guider composition; One end of described precision speed reduction device and one end of shaft coupling connectConnect, the other end of precision speed reduction device is connected with driving control system, one end of described precision lead screw gyroaxis withThe other end of shaft coupling connects, and the other end of precision lead screw gyroaxis is connected with nut by screw thread; Described spiral shellMother is connected with one end of anti-rotation guider, the other end of described anti-rotation guider and one end of LoadCellConnect, the other end of described LoadCell is connected with one end of needle-like elongate rod, another of needle-like elongate rodEnd is connected with primary mirror transition piece.
Beneficial effect of the present invention: accurate force actuator of the present invention can be to the two-way power of applying of minute surface,High precision micro output can ensure two-way function time and power output stablize simultaneously; Structure letter of the present inventionList, flexible operation, the advantage such as with low cost, can verify thin mirror surface active optics system, also canTo be applied to Precision trimming mechanical-optical setup.
Brief description of the drawings
Fig. 1 is force actuator apparatus structure schematic diagram of the present invention;
Fig. 2 is the schematic diagram of apparatus of the present invention;
Fig. 3 is the gap double nuts structure schematic diagram that disappears of the present invention;
Fig. 4 is 3 radial support structure schematic diagrames of anti-rotation guider of the present invention.
In figure: 1-driving control system, 2-mechanical transmission mechanism, 3-LoadCell, 4-the first nut, 5-Two nuts, 6-spring, 7-flat key, 8-V type groove, 9-bulb, 10-precision speed reduction device, 11-shaft coupling,12-precision lead screw gyroaxis, 13-nut, 14-anti-rotation guider, 15-needle-like elongate rod, 16-primary mirrorTransition piece.
Detailed description of the invention
Detailed description of the invention one: in conjunction with Fig. 1, present embodiment is described, active optics accurate force actuator, bagDraw together driving control system 1, mechanical transmission mechanism 2 and LoadCell 3; It also comprises needle-like elongate rod 15 HesPrimary mirror transition piece 16; Described mechanical transmission mechanism 2 by precision speed reduction device 10, shaft coupling 11, nut 13,Precision lead screw gyroaxis 12 and anti-rotation guider 14 form; One end of described precision speed reduction device 10 and connectionOne end of axial organ 11 connects, and the other end of precision speed reduction device 10 is connected with driving control system 1, describedThe other end of axial organ 11 is connected with one end of precision lead screw gyroaxis 12, described precision lead screw gyroaxis 12The other end be connected with nut 13 by screw thread, described nut 13 connects with one end of anti-rotation guider 14Connect, the other end of described anti-rotation guider 14 is connected with one end of LoadCell 3, described LoadCell 3The other end be connected with one end of needle-like elongate rod 15, the other end of needle-like elongate rod 15 and primary mirror transition piece16 connect.
Detailed description of the invention two: the active optics accurate force described in present embodiment and detailed description of the invention oneThe difference of moving device is, described precision speed reduction device 10 is harmonic speed reducer.
Harmonic speed reducer described in present embodiment has reduced the large backlash of traditional decelerator greatly to structureThe impact of power output precision.
Detailed description of the invention three: in conjunction with Fig. 3, present embodiment is described, present embodiment and detailed description of the inventionThe difference of the active optics accurate force actuator described in is, the structure of described nut 13 is adjustable double spiral shellParent structure.
The adjustable double nut structure that present embodiment adopts is called again the gap double nuts structure that disappears, nut 13 and essenceClose leading screw gyroaxis 12 needs through coordinating accurate processing to ensure single and gamut pitch error. InstituteStating the gap method that disappears is: axially same by the first nut 4 and the second nut 5 at precision lead screw gyroaxis 12Direction near or rightabout deviate from, the rigidity that makes to act on along two nuts screw thread side surface direction is very large,But, in the time that load exceedes preload force, deviating from the direction of screw thread, spring 6 preload just as two spiral shellsFemale axial rigidity, the rigidity to system and two-way repeatability have a certain impact, so need control while useDynamic load processed is less than preload force. When after running after a while, screw thread has certain wearing and tearing, instituteStating the second nut 5 can be axially slight mobile, and its spring 6 can compensate the gap that thread abrasion causes,Thereby reduce or eliminate the impact in wearing and tearing double thread gap. The combination of described two nuts adopts flat key 7 to carry outConnect.
Detailed description of the invention four: in conjunction with Fig. 4, this enforcement is described, one of present embodiment and detailed description of the inventionThe difference of the active optics accurate force actuator of stating is, the structure of described anti-rotation guider 14 is 3 pointsRadial support structure, described 3 radial support structure are three penalty kicks that are made up of three balls and V-type groove 8-V-type radial support structure.
3 radial support structure described in present embodiment by precision lead screw gyroaxis 12 from cantilever support modeBe converted to one end and fix, other end sliding support, due to precision lead screw gyroaxis 12 and the relative bearing of associated partSupport section is long, uses the optical axis part of pair of bearings support precision lead screw gyroaxis 12, in certain journeyOn degree, the supporting way of total remains cantilever support, adopts 3 radial support structure shown in Fig. 4, VType groove 8 and bulb 9, in to output 13 guiding of nut and anti-rotation double action, make precision lead screw revolutionAxle 12 is converted to fixing one end, one end sliding support from cantilever support, thereby has improved the defeated of whole force actuatorThe precision and stability of exerting oneself.
Detailed description of the invention five: the active optics accurate force actuator described in present embodiment and embodiment oneDifference be, described anti-rotation guider 14 connects by taper radial friction clasping structure and LoadCell 3Connect.
Being connected between the needle-like elongate rod 15 described in present embodiment and primary mirror transition piece 16 adopts taper footpathConnect to friction clasping structure, what described taper radial friction clasping structure adopted is cone match, to inner coneCover cuts out three gap to increase radial elastic, rotational lock nut 13, and the position of adjustment external conical sleeve, realizesThe connection of two parts. Described taper radial friction clasping structure, can be according to not compared with existing productSame service condition is selected the interface shape between different nut 13 and precision lead screw gyroaxis 12, exerts all one's strengthActuator and service condition are carried out optimum Match; Present embodiment is simple in structure, and cost is low; Be suitable for precisionThe mechanical-optical setups such as fine setting.
Detailed description of the invention six: the active optics accurate force described in present embodiment and detailed description of the invention oneThe difference of moving device is that described LoadCell 3 is high accuracy S type LoadCell.
LoadCell 3 described in present embodiment is as the size of the power that applies of force actuator, described power sensingDevice needs rigidity and the F/V to it to demarcate before use.
Principle of the present invention: the present invention improves innovation on the basis of conventional method, and high accuracy harmonic wave is subtractedSpeed device is combined with direct current generator, and harmonic speed reducer, meeting under the power output of motor and the condition of speed, be protectedThe backlash of card harmonic speed reducer is as much as possible little. The integral rigidity of the coupling stiffness influence power actuator of motor,So need to consider especially shaft coupling 11. In the time starting, stop switching with rotating, may be to connectionAxial organ 11 applies the load larger than motor maximum torque, while therefore selecting shaft coupling 11, need to guarantee peak valueMoment of torsion, below allowable torque, in the time carrying out the switching of rotating frequently, need to make the 2-5 of motor maximum torqueTimes moment of torsion is in below allowable torque. Motor, as executing agency, mainly provides rotary torsion, and by essenceClose decelerator 10 and shaft coupling 11 drive precision lead screw gyroaxis 12 to rotate, by precision lead screw gyroaxis12 are converted to the rectilinear motion of nut 13 by rotatablely moving, it is by the pulling force or the pressure that produce in rectilinear directionPower, is first connected motor output shaft by shaft coupling 11 when mounted with precision lead screw gyroaxis 12, lastMotor and fixed mechanism are fixed. Force cell, is converted to voltage signal by power, and then inputs to weak letterNumber amplifying circuit amplifies to be processed. Control panel is as actuator control core, by the force signal collecting and settingValue relatively, is proofreaied and correct through control algolithm, and output control signal, to motor drive plate, goes to control the rotating of motor,Thereby reach the power output needing, and maintain the stable of system output.
Adopt 3 radial support structure in to output 13 guiding of nut and anti-rotation double action,Make precision lead screw gyroaxis 12 be converted to fixing one end, one end sliding support from cantilever support, thereby improve wholeThe precision and stability of individual structure; Use gap double nut 13 structures that disappear are eliminated the sky of precision lead screw gyroaxises 12Return as the high precision micro of system and export and lay a good foundation; Pin between LoadCell 3 and primary mirror transition piece 16Shape elongate rod 15 has reduced the impact of bending stiffness on primary mirror in ensureing axial rigidity, and needle-likeThe taper radial friction clasping structure of elongate rod 15 and LoadCell 3 is convenient to LoadCell 3 and primary mirror transitionThe direction adjustment of part 16. The force actuator of this new construction can be to the two-way power of applying of minute surface, and the while canStablizing of high precision micro output while ensureing two-way function and output. Simple in structure, operation spirit that invention hasThe advantage such as alive, with low cost, can verify thin mirror surface active optics system, also can be applied to essenceClose fine setting mechanical-optical setup.
Claims (6)
1. active optics accurate force actuator, comprises driving control system (1), mechanical transmission mechanism (2)And LoadCell (3); It is characterized in that, this force actuator also comprises needle-like elongate rod (15) and primary mirror mistakeCross part (16); Described mechanical transmission mechanism (2) by precision speed reduction device (10), shaft coupling (11),Nut (13), precision lead screw gyroaxis (12) and anti-rotation guider (14) composition; Described precision subtractsOne end of speed device (10) is connected with one end of shaft coupling (11), the other end of precision speed reduction device (10) and drivingAutocontrol system (1) connects; One end of described precision lead screw gyroaxis (12) and shaft coupling (11)The other end connects, and the other end of precision lead screw gyroaxis (12) is connected with nut (13) by screw thread; InstituteState nut (13) and be connected with one end of anti-rotation guider (14), described anti-rotation guider (14)The other end is connected with the one end of LoadCell (3), and the other end and the needle-like of described LoadCell (3) are thinOne end of stock (15) connects, and the other end of needle-like elongate rod (15) is connected with primary mirror transition piece (16).
2. active optics accurate force actuator according to claim 1, is characterized in that, described essenceClose decelerator (10) is harmonic speed reducer.
3. active optics accurate force actuator according to claim 1, is characterized in that, described spiral shellThe structure of female (13) is adjustable double nut structure.
4. active optics accurate force actuator according to claim 1, is characterized in that: described anti-The structure that turns guider (14) is 3 radial support structure, and described 3 radial support structure are by threeThree penalty kicks-V-type radial support structure that individual ball and three V-type grooves (8) form.
5. active optics accurate force actuator according to claim 1, is characterized in that, described inLoadCell (3) is high accuracy S type LoadCell.
6. active optics accurate force actuator according to claim 1, is characterized in that, described anti-Turning guider (14) is connected with LoadCell (3) by taper radial friction clasping structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010048054.7A CN106342265B (en) | 2010-04-08 | 2010-04-08 | Active optics accurate force actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010048054.7A CN106342265B (en) | 2010-04-08 | 2010-04-08 | Active optics accurate force actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106342265B true CN106342265B (en) | 2013-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010048054.7A Active CN106342265B (en) | 2010-04-08 | 2010-04-08 | Active optics accurate force actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106342265B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107765388A (en) * | 2017-11-28 | 2018-03-06 | 中国科学院西安光学精密机械研究所 | A kind of ray machine finely tunes acting device with antigravity |
| CN116338957A (en) * | 2022-12-19 | 2023-06-27 | 江苏泽景汽车电子股份有限公司 | HUD lens driving system |
-
2010
- 2010-04-08 CN CN201010048054.7A patent/CN106342265B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107765388A (en) * | 2017-11-28 | 2018-03-06 | 中国科学院西安光学精密机械研究所 | A kind of ray machine finely tunes acting device with antigravity |
| CN107765388B (en) * | 2017-11-28 | 2022-12-09 | 中国科学院西安光学精密机械研究所 | Antigravity fine-adjustment actuating device for optical machine |
| CN116338957A (en) * | 2022-12-19 | 2023-06-27 | 江苏泽景汽车电子股份有限公司 | HUD lens driving system |
| CN116338957B (en) * | 2022-12-19 | 2024-05-14 | 江苏泽景汽车电子股份有限公司 | HUD lens driving system |
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