CN108413924A - A kind of high-accuracy circular dividing device of two-dimensional pointing mechanism - Google Patents
A kind of high-accuracy circular dividing device of two-dimensional pointing mechanism Download PDFInfo
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- CN108413924A CN108413924A CN201810519049.6A CN201810519049A CN108413924A CN 108413924 A CN108413924 A CN 108413924A CN 201810519049 A CN201810519049 A CN 201810519049A CN 108413924 A CN108413924 A CN 108413924A
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- worm screw
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- 230000003287 optical effect Effects 0.000 claims abstract description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000021615 conjugation Effects 0.000 claims description 5
- 241000237858 Gastropoda Species 0.000 claims description 4
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 230000008450 motivation Effects 0.000 claims 1
- 230000033001 locomotion Effects 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C1/00—Measuring angles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
A kind of high-accuracy circular dividing device of two-dimensional pointing mechanism, it includes worm screw main driving mechanism and worm gear rotation angle detent mechanism two parts；The worm screw main driving mechanism includes controlling shafting by the close-loop driven that the gap that disappears certainly combines worm screw, azimuth axle driving motor, azimuth axle angular transducer mounted on the gap combination worm screw both ends that disappear certainly collectively constitute；The worm gear rotation angle detent mechanism then pushes away combination bearing by worm gear, diameter and sense of rotation mechanism forms, wherein the worm gear is connected with sense of rotation mechanism, pushes away combination bearing by diameter and is supported in pedestal, it is characterised in that：Certainly the gap combination worm screw that disappears includes fixed worm screw, is mounted on the movable worm screw at fixed worm screw optical axis end by stop nut, spring, connecting key, adjust pad.
Description
Technical field
The present invention relates to a kind of high-accuracy circular dividing devices of two-dimensional pointing mechanism, are in optical instrument, SERVO CONTROL
A kind of commonly used accurate indexing mechanism is widely used in being accurately directed to for lunar exploration, survey of deep space instrument and solar energy sailboard,
And national defence weapon sighting system is accurately positioned.
Background technology
Directing mechanism is that the surveies of deep space such as solar energy sailboard in survey of deep space, optical detecting gear, device for signalling are set
Important swing mechanism, is related to the safe and reliable operation of entire detector in standby.Wherein, big retarding is than few no return difference worm gear snail
Bar pair is directed in mechanism common circumferential precision rotating device, mostly uses double helical pitch structure designs in the past, but in mars exploration
In task, since the working environment temperature difference is big（-130℃~70℃）, bearing direction require higher, be difficult to meet mission requirements, need
Further exploitation adapts to different operating modes, has the novel circumferential precision dividing apparatus of revolution sideshake self-adjusting function.
Invention content
The purpose of the present invention is to meet the needs of survey of deep space detection mission, and the one kind developed has from the gap that disappears
Function worm couple precision rotating positioning device.
The purpose of the present invention can be realized by following technical measures：
The two-dimensional pointing mechanism of the present invention includes worm screw main driving mechanism and worm gear rotation angle with high-accuracy circular dividing device
Detent mechanism two parts；The worm screw main driving mechanism includes combining worm screw, mounted on the gap combination worm screw two that disappears certainly by the gap that disappears certainly
The close-loop driven that azimuth axle driving motor, the azimuth axle angular transducer at end collectively constitute controls shafting；The worm gear rotation
Gyration detent mechanism then pushes away combination bearing by worm gear, diameter and sense of rotation mechanism forms, wherein the worm gear and sense of rotation
Mechanism is connected, and pushes away combination bearing by diameter and is supported in pedestal；Certainly the gap combination worm screw that disappears includes fixed worm screw, passes through limit
Nut, spring, connecting key, adjust pad are mounted on the movable worm screw at fixed worm screw optical axis end.
Heretofore described worm screw main driving mechanism and the two-part worm couple shape of worm gear rotation angle detent mechanism
At bilateral gapless spatial conjugation meshing relation, to form transmission ratio 80:1（Large speed ratio）Circumferential precision rotating indexing means.
Furtherly, the gap that disappears certainly combines worm and wheel contact surface and forms spatial conjugation Meshing Pair, forms azimuth axle and drives
Dynamic motor driving --- the gap that disappears certainly combines worm-gears large speed ratio（Transmission ratio 80:1）Reduction of speed --- sense of rotation mechanism is accurate
The driving form of indexing；Meanwhile azimuth axle angular transducer forms and measures feedback unit, it is common with azimuth axle driving motor
Closed-loop control system is formed, can realize the essence that rotates in a circumferential direction of two-dimensional pointing mechanism in terms of mechanical construction and control system two
Determine position.
Certainly the gap combination worm screw that disappears is made of nut, spring, movable worm screw, adjust pad and fixed worm screw, worm gear
Worm gear pair can promote spring and adjustment since design, manufacture, assembly, the temperature difference are formed by variable sideshake by the regulation and control of nut
Gasket generates corresponding deformation, and formation activity worm screw is matched with the axial trace movement of sideshake amount relative to fixed worm screw, eliminates
Since sideshake is formed by return difference in counter motion, the precise treatment of sense of rotation transmission mechanism is realized.
In Control System Design, the azimuth axle driving motor positioned at the gap combination worm screw both ends that disappear certainly and azimuth axle angle
It spends sensor and forms closed-loop control system, in the course of work, azimuth axle angular transducer is anti-as the measurement in control system
Unit is presented, the practical rotation angle of worm couple is constantly fed back into controller, controller passes through setting value and actual value
It relatively handles in real time, revision directive is constantly sent out to azimuth axle driving motor, realizes the precise treatment of sense of rotation electric-control system.
The positive and negative rotation of worm couple measures feedback processing unit from disappear gap design and control system in mechanical system
Adjustment is corrected in real time, realizes the high-accuracy circular dividing of directing mechanism jointly.
Beneficial effects of the present invention are as follows：
Due to the pre- tight integration worm structure design of double section worm screws that the present invention uses in mechanical structure, also formed in control system
Closed-loop control can effectively avoid influence of the manufacture rigging error to return difference in deflecting motion process, on Functional Design, multiplexing
Condition adapts to the big mission requirements of mars exploration variation of ambient temperature, for China's mars exploration and it is higher level on survey of deep space carry
For a kind of suitable high-accuracy circular dividing device.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention（Stereogram）.
Serial number in Fig. 1：1-- worm gears, 2-shells, 3-azimuth axle driving motors, 4-transparent covers, 5-deep groove ball bearings,
6-disappear gap combination worm screw certainly, 7-pedestals, and 8-diameters push away combination bearing, 9-main shafts, 10-angular contact ball bearings, 11-transparent covers,
12-azimuth axle angular transducers.
Fig. 2 is in Fig. 1 from the sectional view for the gap combination worm screw that disappears.
Serial number in Fig. 2：6-1-stop nut, 6-2-spring, 6-3-segmentation worm screw, 6-4-connecting key, 6-5-adjustment
Pad, 6-6-worm screw.
Specific implementation mode
The present invention is below with reference to example（Attached drawing）It is described further：
As depicted in figs. 1 and 2, two-dimensional pointing mechanism of the invention includes worm screw main driving mechanism with high-accuracy circular dividing device
With worm gear rotation angle detent mechanism two parts；The worm screw main driving mechanism includes combining worm screw 6 by the gap that disappears certainly, being mounted on certainly
The close-loop driven control that azimuth axle driving motor 3, the azimuth axle angular transducer 12 at the gap that disappears combination worm screw both ends collectively constitute
Shafting processed；The worm gear rotation angle detent mechanism then pushes away combination bearing 8 by worm gear 1, diameter and is formed with sense of rotation mechanism, wherein
The worm gear 1 is connected with sense of rotation mechanism, pushes away combination bearing 8 by diameter and is supported in pedestal；Worm screw main driving mechanism and worm gear
The two-part worm couple of rotation angle detent mechanism forms bilateral gapless spatial conjugation meshing relation, to form transmission
Than 80:1（Large speed ratio）Circumferential precision rotating indexing means；It is described to include fixed worm screw 6-6, pass through limit from the gap combination worm screw that disappears
Nut 6-1, spring 6-2, connecting key 6-4, adjust pad 6-5 are mounted on the movable worm screw 6-3 at fixed worm screw 6-6 optical axises end.
Main shaft 9 and worm gear 1 are connected with, and pedestal 7 and shell 2 are connected by screw bolts, 8 inner ring of diameter thrust bearing and main shaft 9
Slight interference coordinates, 8 outer ring of diameter thrust bearing and 2 transition of shell cooperation；Diameter thrust bearing 8 plays main shaft 9 and axially and radially limits.
Furtherly, the gap that disappears certainly combines worm and wheel contact surface and forms spatial conjugation Meshing Pair, forms azimuth axle and drives
Dynamic motor driving --- the gap that disappears certainly combines worm-gears large speed ratio（Transmission ratio 80:1）Reduction of speed --- sense of rotation mechanism is accurate
The driving form of indexing；Meanwhile azimuth axle angular transducer forms and measures feedback unit, it is common with azimuth axle driving motor
Closed-loop control system is formed, can realize the essence that rotates in a circumferential direction of two-dimensional pointing mechanism in terms of mechanical construction and control system two
Determine position.
Certainly the gap combination worm screw that disappears is made of nut, spring, movable worm screw, adjust pad and fixed worm screw, worm gear
Worm gear pair can promote spring and adjustment since design, manufacture, assembly, the temperature difference are formed by variable sideshake by the regulation and control of nut
Gasket generates corresponding deformation, and formation activity worm screw is matched with the axial trace movement of sideshake amount relative to fixed worm screw, eliminates
Since sideshake is formed by return difference in counter motion, the precise treatment of sense of rotation transmission mechanism is realized.
In Control System Design, the azimuth axle driving motor positioned at the gap combination worm screw both ends that disappear certainly and azimuth axle angle
It spends sensor and forms closed-loop control system, in the course of work, azimuth axle angular transducer is anti-as the measurement in control system
Unit is presented, the practical rotation angle of worm couple is constantly fed back into controller, controller passes through setting value and actual value
It relatively handles in real time, revision directive is constantly sent out to azimuth axle driving motor, realizes the precise treatment of sense of rotation electric-control system.
The positive and negative rotation of worm couple measures feedback processing unit from disappear gap design and control system in mechanical system
Adjustment is corrected in real time, realizes the high-accuracy circular dividing of directing mechanism jointly.
The specific work process of the present invention is as follows：
Azimuth axle driving motor drives from the gap combination worm screw rotation that disappears, and the contact surface of the gap that disappears certainly combination worm and wheel forms sky
Between be conjugated meshing relation, to realize that worm gear drives the circumferential precision indexing of sense of rotation mechanism, during the work time, azimuth axis
It is that angular transducer constantly measures the rotation angle for the gap combination worm screw that disappears certainly, and is constantly compared and sentences with setting value
It is disconnected, adjust the precision positioning, it can be achieved that sense of rotation mechanism circular dividing by constantly correcting；Especially needed explanation is snail
It is always to obstruct the bottleneck for improving sense of rotation MECHANISM PRECISION that worm couple, which inevitably manufactures rigging error, snail of the invention
Bar is designed using double section worm screw pre-pressing structures, in the course of work, by the regulation and control of nut, spring and adjust pad is promoted to generate phase
The deformation answered, formation activity worm screw are matched with the axial trace movement of sideshake amount relative to fixed worm screw, eliminate counter motion
In return difference is formed by due to sideshake, realize the precise treatment of transmission mechanism hardware.
Claims (2)
1. a kind of high-accuracy circular dividing device of two-dimensional pointing mechanism, it includes worm screw main driving mechanism and worm gear rotation angle
Detent mechanism two parts；The worm screw main driving mechanism includes combining worm screw, mounted on the gap combination worm screw two that disappears certainly by the gap that disappears certainly
The close-loop driven that azimuth axle driving motor, the azimuth axle angular transducer at end collectively constitute controls shafting；The worm gear rotation
Gyration detent mechanism then pushes away combination bearing by worm gear, diameter and sense of rotation mechanism forms, wherein the worm gear and sense of rotation
Mechanism is connected, and pushes away combination bearing by diameter and is supported in pedestal, it is characterised in that：Certainly the gap combination worm screw that disappears includes fixed snail
Bar, the movable worm screw that fixed worm screw optical axis end is mounted on by stop nut, spring, connecting key, adjust pad.
2. the high-accuracy circular dividing device of two-dimensional pointing mechanism according to claim 1, it is characterised in that：The main drive of worm screw
Motivation structure and the two-part worm couple of worm gear rotation angle detent mechanism form bilateral gapless spatial conjugation meshing relation,
To form transmission ratio 80:1 circumferential precision rotating indexing means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810519049.6A CN108413924A (en) | 2018-05-25 | 2018-05-25 | A kind of high-accuracy circular dividing device of two-dimensional pointing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810519049.6A CN108413924A (en) | 2018-05-25 | 2018-05-25 | A kind of high-accuracy circular dividing device of two-dimensional pointing mechanism |
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| CN108413924A true CN108413924A (en) | 2018-08-17 |
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| CN201810519049.6A Pending CN108413924A (en) | 2018-05-25 | 2018-05-25 | A kind of high-accuracy circular dividing device of two-dimensional pointing mechanism |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0796441A (en) * | 1993-09-24 | 1995-04-11 | Eisuke Yokoyama | Backlash eliminating structure in worm-worm wheel mechanism |
| CN101673118A (en) * | 2009-09-24 | 2010-03-17 | 同济大学 | Combined type transmission variable-angle micrometric displacement regulation device |
| CN201807900U (en) * | 2010-09-06 | 2011-04-27 | 徐国胜 | Double-worm closed loop rotary work table |
| CN102411372A (en) * | 2011-11-02 | 2012-04-11 | 同济大学 | Combined driving micro-displacement regulation device |
| CN102997887A (en) * | 2012-12-13 | 2013-03-27 | 北京理工大学 | Method and device for multi-dimensional detection of angle sensor |
| CN104675980A (en) * | 2015-01-06 | 2015-06-03 | 西华大学 | Automatic plane-enveloping internal-meshing worm and worm gear clearance elimination device |
| CN208171237U (en) * | 2018-05-25 | 2018-11-30 | 郑州机械研究所有限公司 | A kind of high-accuracy circular dividing device of two-dimensional pointing mechanism |
-
2018
- 2018-05-25 CN CN201810519049.6A patent/CN108413924A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0796441A (en) * | 1993-09-24 | 1995-04-11 | Eisuke Yokoyama | Backlash eliminating structure in worm-worm wheel mechanism |
| CN101673118A (en) * | 2009-09-24 | 2010-03-17 | 同济大学 | Combined type transmission variable-angle micrometric displacement regulation device |
| CN201807900U (en) * | 2010-09-06 | 2011-04-27 | 徐国胜 | Double-worm closed loop rotary work table |
| CN102411372A (en) * | 2011-11-02 | 2012-04-11 | 同济大学 | Combined driving micro-displacement regulation device |
| CN102997887A (en) * | 2012-12-13 | 2013-03-27 | 北京理工大学 | Method and device for multi-dimensional detection of angle sensor |
| CN104675980A (en) * | 2015-01-06 | 2015-06-03 | 西华大学 | Automatic plane-enveloping internal-meshing worm and worm gear clearance elimination device |
| CN208171237U (en) * | 2018-05-25 | 2018-11-30 | 郑州机械研究所有限公司 | A kind of high-accuracy circular dividing device of two-dimensional pointing mechanism |
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Application publication date: 20180817 |