CN106526836A - Rotating prism device under non-circular gear driving - Google Patents
Rotating prism device under non-circular gear driving Download PDFInfo
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- CN106526836A CN106526836A CN201611135907.4A CN201611135907A CN106526836A CN 106526836 A CN106526836 A CN 106526836A CN 201611135907 A CN201611135907 A CN 201611135907A CN 106526836 A CN106526836 A CN 106526836A
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- 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
- G02B26/108—Scanning systems having one or more prisms as scanning elements
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Abstract
The invention relates to a rotating prism device under non-circular gear driving. The rotating prism device comprises a prism and frame assembly, a drive system and a base assembly. The prism and frame assembly consists of a frame, s prism washer, a wedged prism, a rubber cushion block, a prism retainer ring and a wedged retainer ring. The drive system includes a rotary motor, a rotary encoder, a motor bearing seat, a rotary encoder support seat, a coupling unit, a driving shaft, a driven shaft, an active non-circular gear, a driven non-circular gear, an active circular gear and a driven circular gear. The base assembly includes a base, a bearing retainer ring, a bearing end cover, a base insert unit, a rolling bearing. The shapes of the non-circular gears are designed based on a non-linear relationship between the rotation angle of the wedged prism and a deflection angle of an emergent light beam. A drive motor only needs to rotate at a constant speed to realize high-precision beam scanning at a specific track, so that the requirement on control of the rotating prism system is reduced. Besides, the rotary encoder is arranged inside the drive system and is used for detecting the practical rotation angle of the driving shaft in real time; a computer processes the collected data; and an opened-loop way or a closed-loop way is employed flexibly according to practical needs, so that the proper prism rotation precision is obtained.
Description
Technical field
The present invention relates to a kind of optical scanner, and in particular to the rotary prism dress that a kind of employing non-circular gear drives
Put, belong to precision optics scanning field.
Background technology
Field is scanned in precision optics, rotary prism device tool has been widely used, and can accurately realize target area
Scanning, the tracking of measurand, the compensating approach of the alignment of light path and light beam error in pointing etc..But rotary prism turn
Generally there is complicated non-linear relation between angle and the deflection angle of scanning light beam, be that the motor control of rotary prism brings difficulty
Degree.The rotary motion of precise control prism, the real-time for ensureing dynamic regulation prism corner, are to improve rotary prism systematic function
Key.
Formerly technology gives the version of several rotary prism devices below.
First technology（The patents such as Zu Jifeng, application number：03129234.8, June 13 2003 applying date " satellite trajectory
Optical analog device "）Propose that the scheme of group of motors mate gear transmission realizes the different motion match pattern of rotation biprism, with
Relative movement orbit between analog satellite.But the motor combination of complexity is larger to the impact for driving precision with control system, and
The difficult problem for bringing space to arrange.
First technology（Anhu Li, et al., “Laser coarse-fine coupling scanning method
by steering double prisms”, Applied Optics, 2012, 51(3): 356-364）Propose two power
Torque motor is coupled with biprism lens barrel respectively, directly drives biprism rotation to realize the coarse scanning of deflecting light beams；And in this base
Nesting is designed on plinth and involves formula deflection mechanism, the essence scanning of light beam is realized by the orthogonal beat motion of biprism.But adopt
Torque motor directly drives the scheme of prism rotation to exist, and the customization of torque fluctuations, slot effect and motor is relatively costly to ask
Topic.
First technology（Li An tiger patents, application number：201210439061.9, November 7 2012 applying date " is realized thick
The prism machinery of smart two-stage scan "）Worm-and-wheel gear transmission power is driven using electric rotating machine, prism and inside and outside is realized
Picture frame assembly circle rotation, show gear ratio it is big, it is simple and compact for structure the advantages of.But worm-and-wheel gear is present to be nibbled
Gap is closed, thus caused hysterisis error is difficult to eliminate.
First technology（The patents such as Li Anhu, application number：201310072421.0, March 7 2013 applying date " Timing Belt
Drive rotary prism device "）The rotation of heavy caliber prism is driven using synchronous belt mechanism, with gear ratio it is accurate, noise is little, structure
The advantages of compact, flexible arrangement, but while material aging, fatigue wear and climbing tooth also easily occur, jump the phenomenons such as tooth.
The common feature of above-mentioned several rotary prism devices is to need to formulate complicated driving according to different scanning tracks
Motor control strategy, still with tracking accuracy and real-time in terms of deficiency, it is impossible to efficiently solve rotary prism system
Nonlinear Control problem.
First technology（The patents such as Li Anhu, application number：201210375722.6, October 8 2012 applying date " adopts
Cam-actuated pendulum illuminating apparatus structure "）Propose prism beat to be driven using cam mechanism, the nonlinear Control of beat prism is transformed into
In the contour curve design of driving cam, so as to simplify the non-linear control strategy of beat prism.But the application model of the invention
Enclose and be only limitted to beat prism, it is impossible to drive prism to realize that circle rotates；And cam profile curve design and difficulty of processing compared with
Greatly, its error will directly affect the beat precision of prism.
The content of the invention
It is an object of the invention to provide the rotary prism device that a kind of employing non-circular gear drives, by motor
The high precision nonlinear deflection rule of light beam is realized in uniform rotation, to overcome the weak point of above-mentioned first technology.
Non-circular gear proposed by the present invention drives rotary prism device, by prism and picture frame assembly, drive system and support
Component is constituted, wherein：
The prism includes picture frame 4, prism packing ring 5, prism wedge 6, rubber cushion blocks 7, prism back-up ring 29 and wedge with picture frame assembly
Shape back-up ring 30；Prism wedge 6 is installed in picture frame 4, arranges prism packing ring 5, rise and protect between its planar side and the interior step of picture frame 4
Protect prism wedge 6 and subtract function of shock insulation, between its wedge surface side and the wedge surface side of wedge shape back-up ring 30, arrange one group of rubber cushion blocks 7, rise
Protect prism wedge 6 and subtract function of shock insulation；The axial location of wedge shape back-up ring 30 is by the prism back-up ring 29 with its plane side contacts
It is fixed；Mode connects for screw is adopted between prism back-up ring 29 and picture frame 4；By circumferential equal between the flange of picture frame 4 and driven Knucle-gear 8
The mode connects for screw of cloth；
Described drive system include electric rotating machine 15, rotary encoder 23, motor support base 14, rotary encoder bearing 20,
One shaft coupling 16, second shaft coupling 22, driving shaft 18, driven shaft 11, active non-circular gear 19, driven non-circular gear 27, active
Knucle-gear 9 and driven Knucle-gear 8；Electric rotating machine 15 is installed on motor support base 14 by screw；Motor support base 14 passes through screw
It is installed on pedestal 1；Connected using first shaft coupling 16 between the overhanging end of the motor shaft and driving shaft 18 of electric rotating machine 15；It is main
The overhanging end of 18 opposite side of moving axis is connected with rotary encoder 23 by second shaft coupling 22；Rotary encoder 23 is solid by screw
In support insert 32；Active non-circular gear 19 using the bonded middle part axle body for being installed on driving shaft 18, and with by key
Connection is intermeshed installed in the driven non-circular gear 27 on driven shaft 11；Active Knucle-gear 9 using it is bonded be fixed on it is driven
The axle body of axle 11, and be intermeshed with the driven Knucle-gear 8 on picture frame 4；
The frame component includes support 1, clutch shaft bearing back-up ring 2, second bearing back-up ring 28, clutch shaft bearing end cap 12, the second axle
Socket end lid 13,3rd bearing end cap 21, fourth bearing end cap 25, support insert 32, the first rolling bearing 3, the second rolling bearing
10th, the 3rd rolling bearing 17, the 4th rolling bearing 24, the 5th rolling bearing 26 and the 6th rolling bearing 31；Support 1 and support edge
Block 32 adopts screw attachment, and both collectively form the inner space of a relative closure；Prism is with picture frame assembly by the first rolling
Dynamic bearing 3 and the 6th rolling bearing 31 are supported, and are installed in described inner space；The drive system passes through second axis of rolling
Hold the 10, the 3rd rolling bearing 17, the 4th rolling bearing 24 and the 5th rolling bearing 26 to support, be installed on described inner space
It is interior；First rolling bearing 3 is positioned by the shaft shoulder of clutch shaft bearing back-up ring 2, the interior step of support 1 and picture frame 4；6th axis of rolling
Hold 31 shaft shoulder positioning by the interior step, second bearing back-up ring 28 and picture frame 4 of support insert 32；Second rolling bearing 10 leads to
Cross the shaft shoulder positioning of clutch shaft bearing end cap 12, the interior step of support 1 and driven shaft 11；3rd rolling bearing 17 passes through the second axle
The shaft shoulder positioning of socket end lid 13, the interior step of support 1 and driving shaft 18；4th rolling bearing 24 is by the interior of support insert 32
The shaft shoulder positioning of step, 3rd bearing end cap 21 and driving shaft 18；Interior platform of 5th rolling bearing 26 by support insert 32
The shaft shoulder positioning of rank, fourth bearing end cap 25 and driven shaft 11.
In the present invention, the prism wedge 6, picture frame 4, the first rolling bearing 3, the 6th rolling bearing 31 and driven Knucle-gear
8 using coaxially arranged.
In the present invention, the corner information of the driving shaft 18 that control system is obtained according to rotary encoder 23 realizes that feedback is adjusted
Section, control driving shaft 18 remain a constant speed rotation, and then accurately control the anglec of rotation of prism wedge 6, realize high precision light beam
Scanning.
In the present invention, using non-circular gear to realizing that the first order is slowed down, spur gear wheel slows down to realizing the second level, to obtain
Obtain accurate prism rotating speed.Require to adapt to different arrangement forms, can also using cylindric spiral gear to, bevel gear to, snail
Various drive mechanisms such as worm and gear realize that the second level is slowed down；Or second level reducing gear is removed, using non-circular gear to direct
Drive the mode of prism rotation.
In the present invention, it is to eliminate back lash that may be present and backhaul gap during double reduction, can be using conjunction
The backlash eliminating equipment of reason（Such as damping gear etc.）, improve the transmission accuracy of drive system.
Apparatus of the present invention can be with used aloned, it is also possible to multiple to be applied in combination, for example, by two apparatus of the present invention coaxial rows
Row, may make up rotation prism arrangement.
The technological merit of the present invention：
1., in the present invention, the shape of the non-circular gear pair is according to the non-thread between prism wedge corner and outgoing beam deflection angle
Sexual intercourse is designed, and motor only need at the uniform velocity rotate and be capable of achieving the high precision light beam scanning to particular track, Ji Jiang electricity
The nonlinear Control of machine is reduced to Linear Control, reduces the control requirement of rotary prism system.
2. in the present invention, described prism wedge is by non-circular gear to driving, it is possible to achieve circle rotates, and transmission is accurate
Really, it is ensured that the Dynamic High-accuracy scan performance of light beam；By several apparatus of the present invention co-axial alignments, by the only of several prism wedges
Vertical rotation, can be with the scanning field of view of expanded light beam.
3. in the present invention, the non-circular gear to interchangeable design can be carried out, by changing different non-circular gears
It is right, it is possible to achieve various smooth beam scanning tracks, adapt to different application scenarios.
4. in the present invention, rotary encoder is furnished with the drive system, the reality for detecting driving shaft in real time turns
Angle, the data gathered by computer disposal can neatly adopt opened loop control or close-loop control mode according to the actual requirements,
Obtain suitable prism running accuracy.
Description of the drawings
Fig. 1 is the overall construction drawing of the present invention, wherein：（a）For the schematic diagram of driveline arrangement form,（b）For assembling
Body front view,（c）For A-A sectional views.
Structure charts of the Fig. 2 for support, wherein：（a）For front view,（b）For B-B sectional views.
Structure charts of the Fig. 3 for end ring, wherein：（a）For front view,（b）For left view.
Structure charts of the Fig. 4 for picture frame, wherein：（a）For front view,（b）For C-C sectional views.
Structure charts of the Fig. 5 for prism wedge, wherein：（a）For front view,（b）For left view.
Structure charts of the Fig. 6 for A type bearing (ball) covers, wherein：（a）For front view,（b）For D-D sectional views.
Structure charts of the Fig. 7 for Type B bearing (ball) cover, wherein：（a）For front view,（b）For E-E sectional views.
Structure charts of the Fig. 8 for prism back-up ring, wherein：（a）For front view,（b）For F-F sectional views.
Structure charts of the Fig. 9 for wedge shape back-up ring, wherein：（a）For front view,（b）For G-G sectional views.
Structure charts of the Figure 10 for support insert, wherein：（b）For front view,（b）For H-H sectional views.
Design flow diagrams of the Figure 11 for non-circular gear pair.
Label in figure：1 is support, and 2 is clutch shaft bearing back-up ring, and 3 is the first rolling bearing, and 4 is picture frame, and 5 is prism packing ring,
6 is prism wedge, and 7 is rubber cushion blocks, and 8 is driven Knucle-gear, and 9 is active Knucle-gear, and 10 is the second rolling bearing, and 11 is driven
Axle, 12 is clutch shaft bearing end cap（A types）, 13 is second bearing end cap（Type B）, 14 is motor support base, and 15 is electric rotating machine, and 16 are
First shaft coupling, 17 is the 3rd rolling bearing, and 18 is driving shaft, and 19 is active non-circular gear, and 20 is rotary encoder bearing, 21
For 3rd bearing end cap（Type B）, 22 is second shaft coupling, and 23 is rotary encoder, and 24 is the 4th rolling bearing, and 25 is the 4th axle
Socket end lid（A types）, 26 is the 5th rolling bearing, and 27 is driven non-circular gear, and 28 is second bearing back-up ring, and 29 is prism back-up ring,
30 is wedge shape back-up ring, and 31 is the 6th rolling bearing, and 32 is support insert.
Specific embodiment
Describe the rotary prism device and its course of work driven using non-circular gear, but this with reference to embodiment in detail
The scope of patent protection not limited to this of invention.
Embodiment 1：
The present embodiment uses two apparatus of the present invention, and two prism arranged in co-axial alignment are made during installation, constitutes rotation prism arrangement.Under
Face combines accompanying drawing, by taking apparatus of the present invention as an example, describes the structural principle and the course of work of apparatus of the present invention in detail.
Referring to Fig. 1, in rotary prism device, electric rotating machine 15 drive non-circular gear to and roller gear to constitute two
Level deceleration system, by nonlinear motion relation transmission to driven Knucle-gear.Prism is joined with picture frame assembly and 8 rigidity of driven Knucle-gear
Connect, therefore, the present invention can realize precise rotational motion of the prism wedge 6 in the range of circle.
Referring to Fig. 1, described prism and picture frame assembly include picture frame 4, prism packing ring 5, prism wedge 6, rubber cushion blocks 7,
Prism back-up ring 29 and wedge shape back-up ring 30.Prism wedge 6 is installed in picture frame 4, is arranged between its planar side and the interior step of picture frame 4
Prism packing ring 5, plays protection eyeglass and subtracts function of shock insulation, one group of rubber is arranged between its wedge surface side and the wedge surface side of wedge shape back-up ring 30
Cushion block 7, plays protection eyeglass and subtracts function of shock insulation；The axial location of wedge shape back-up ring 30 is by the prism back-up ring with its plane side contacts
29 fix；One group of mode connects for screw is adopted between prism back-up ring 29 and picture frame 4；By week between the flange of picture frame 4 and driven Knucle-gear 8
To uniform mode connects for screw.
Referring to Fig. 1, the first described rolling bearing 3 is by clutch shaft bearing back-up ring 2, the interior step of support 1 and picture frame 4
The shaft shoulder is positioned；The shaft shoulder of interior step, second bearing back-up ring 28 and picture frame 4 of the 6th rolling bearing 31 by support insert 32 is fixed
Position.When prism wedge 6 is normal to be rotated, the outer ring and frame component of the first rolling bearing 3 and the 6th rolling bearing 31 keep phase
To fixation, and inner ring is with 4 synchronous rotary of picture frame.
Referring to Fig. 1, described drive system includes electric rotating machine 15, rotary encoder 23, motor support base 14, rotary coding
Device bearing 20, first shaft coupling 16, second shaft coupling 22, driving shaft 18, driven shaft 11, active non-circular gear 19, driven not rounded
Gear 27, active Knucle-gear 9, driven Knucle-gear 8.Electric rotating machine 15 is arranged on motor support base 14 by screw；Motor support base
14 are arranged on pedestal 1 by screw；Connected using first shaft coupling 16 between the overhanging end of motor shaft and driving shaft 18, and profit
Ensure the abundant transmission of torque with the holding screw of quadrature arrangement；The overhanging end of 18 opposite side of driving shaft passes through second shaft coupling 22
Rotating shaft with rotary encoder 23 is connected, and the abundant transmission of the holding screw guarantee torque using quadrature arrangement；Rotary coding
Device 23 is fixed by screws in support insert 32, for the actual anglec of rotation of real-time measuring prism；Driving shaft 18 passes through two
3rd rolling bearing 17 at end and the 4th rolling bearing 24 are arranged on inside frame component, and the 3rd rolling bearing 17 passes through the second axle
The shaft shoulder positioning of socket end lid 13, the interior step of support 1 and driving shaft 18；4th rolling bearing 24 is by the interior of support insert 32
The shaft shoulder positioning of step, 3rd bearing end cap 21 and driving shaft 18；The 3rd rolling bearing 17 when driving shaft 18 is normal to be rotated
Remain stationary as with the outer ring of the 4th rolling bearing 24 and inner ring is with 18 synchronous rotary of driving shaft；Active non-circular gear 19 is adopted and is bonded
The middle part axle body installed in driving shaft 18 is connect, and it is mutual with by the bonded driven non-circular gear 27 on driven shaft 11
Engagement, realizes that the first order is slowed down；Active Knucle-gear 9 using the bonded axle body for being fixed on driven shaft 11, with driven non-circular gear
27 keep identical rotating speed；Active Knucle-gear 9 is intermeshed with the driven Knucle-gear 8 on picture frame 4, realizes that the second level subtracts
Speed；Driven shaft 11 is arranged on inside frame component by second rolling bearing 10 and the 5th rolling bearing 26 at two ends, the second rolling
Dynamic bearing 10 is positioned by the shaft shoulder of clutch shaft bearing end cap 12, the interior step of support 1 and driven shaft 11；5th rolling bearing 26
Positioned by the shaft shoulder of the interior step, fourth bearing end cap 25 and driven shaft 11 of support insert 32；Revolve when driven shaft 11 is normal
When turning, the outer ring of the second rolling bearing 10 and the 5th rolling bearing 26 keeps fixed and inner ring with 11 synchronous rotary of driven shaft.
Referring to Fig. 1, in the present invention, the detailed process of non-circular gear driving prism wedge rotation is：Electric rotating machine 15 is by the
One shaft coupling 16 transmits torque to driving shaft 18, and the rotation angle information of driving shaft 18 is by 23 real-time detection of rotary encoder；Peace
The active non-circular gear 19 being mounted on driving shaft 18 and the driven non-circular gear 27 on driven shaft 11 constitute the first order and subtract
Speed, driven shaft 11 and the active Knucle-gear 9 on driven shaft 11 keep rotating speed consistent with driven non-circular gear 27；It is main
Dynamic Knucle-gear 9 and the driven Knucle-gear 8 being rigidly attached on picture frame 4 constitute the second level and slow down；Prism wedge 6 is fixed on picture frame 4
It is interior, synchronized rotation is kept with driven Knucle-gear 8, so as to realize the accurate revolution control to prism 6.As it was previously stated, rotation herein
Rotating motor and linkage section can adopt diversified class of establishment and cloth according to the different demands of practical application
Put form.
Referring to Fig. 2,1 two bottom sides of support are machined with installing hole, rotary prism device should be fixed on spy during practical application
On fixed mounting platform, to ensure the Stability and veracity of light beam scanning.
The Basic Design flow process of non-circular gear is introduced below according to Figure 11.
Referring to Figure 11, for different light beam scanning tracks, need to design suitable non-circular gear profile, its key step
For：
（1）The given targeted scans track of analysis, solves its exact expression or the matched curve expression formula with enough accuracy；
（2）Known target track expression formula, inversely solves method using biprism（Such as two-step method, iterative method etc.）Obtain turning for prism
Angular curve；
（3）According to existing prism rotation curve, determine the gear ratio change function of drive system, thus design noncircular gear pair
Pitch curve, this step by rotate biprism corner and the deflection angle of scanning light beam between non-linear relation be converted into not rounded
The pitch curve shape of gear；
（4）Based on the pitch curve of noncircular gear pair, tip curve, tooth root curve and the tooth of noncircular gear pair are derived using analytic method
Wide curvilinear equation；
（5）Pressure angle verification, root are carried out to noncircular gear pair and cuts verification and convexity verification etc., and obtained by Kinematics Simulation
Whether actual light beam scanning track, contrast actual scanning track and theoretical scanning track and can determine that the noncircular gear pair of design
Meet transmission accuracy requirement；
（6）The stressing conditions of noncircular gear pair are analyzed with the method for dynamics simulation and finite element analyses, to judge not rounded
Whether gear mechanism meets intensity requirement.
Claims (4)
1. non-circular gear drives rotary prism device, it is characterised in that by prism and picture frame assembly, drive system and frame component
Composition, wherein：
The prism includes picture frame (4), prism packing ring (5), prism wedge (6), rubber cushion blocks (7), prism gear with picture frame assembly
Circle (29) and wedge shape back-up ring (30)；Prism wedge (6) is installed in picture frame (4), between the interior step of its planar side and picture frame (4)
Arrangement prism packing ring (5), plays protection prism wedge (6) and subtracts function of shock insulation, the wedge surface side of its wedge surface side and wedge shape back-up ring (30)
Between arrange one group of rubber cushion blocks (7), rise and protection prism wedge (6) and subtract function of shock insulation；The axial location of wedge shape back-up ring (30)
It is fixed by the prism back-up ring (29) with its plane side contacts；Mode connects for screw is adopted between prism back-up ring (29) and picture frame (4)；Mirror
By circumferential uniform mode connects for screw between the flange of frame (4) and driven Knucle-gear (8)；
Described drive system includes electric rotating machine (15), rotary encoder (23), motor support base (14), rotary encoder bearing
(20), first shaft coupling (16), second shaft coupling (22), driving shaft (18), driven shaft (11), active non-circular gear (19), from
Dynamic non-circular gear (27), active Knucle-gear (9) and driven Knucle-gear (8)；Electric rotating machine (15) is installed on motor by screw
On seat (14)；Motor support base (14) is installed on pedestal (1) by screw；The motor shaft of electric rotating machine (15) and driving shaft (18)
Overhanging end between using first shaft coupling (16) connect；The overhanging end of driving shaft (18) opposite side passes through second shaft coupling (22)
It is connected with rotary encoder (23)；Rotary encoder (23) is fixed in support insert (32) by screw；Active non-circular gear
(19) using the bonded middle part axle body for being installed on driving shaft (18), and with by it is bonded on driven shaft (11) from
Dynamic non-circular gear (27) intermeshing；Active Knucle-gear (9) using the bonded axle body for being fixed on driven shaft (11), and with installation
Driven Knucle-gear (8) intermeshing on picture frame (4)；
The frame component includes support (1), clutch shaft bearing back-up ring (2), second bearing back-up ring (28), clutch shaft bearing end cap
(12), second bearing end cap (13), 3rd bearing end cap (21), fourth bearing end cap (25), support insert (32), first roll
Bearing (3), the second rolling bearing (10), the 3rd rolling bearing (17), the 4th rolling bearing (24), the 5th rolling bearing (26) and
6th rolling bearing (31)；Support (1) and support insert (32) adopt screw attachment, and both collectively form a relative closure
Inner space；Prism and picture frame assembly are supported by the first rolling bearing (3) and the 6th rolling bearing (31), be installed on described in
In inner space；The drive system passes through the second rolling bearing (10), the 3rd rolling bearing (17), the 4th rolling bearing (24)
Support with the 5th rolling bearing (26), be installed in described inner space；First rolling bearing (3) is by clutch shaft bearing back-up ring
(2), the shaft shoulder positioning of the interior step of support (1) and picture frame (4)；6th rolling bearing (31) is by the interior of support insert (32)
The shaft shoulder positioning of step, second bearing back-up ring (28) and picture frame (4)；Second rolling bearing (10) is by clutch shaft bearing end cap
(12), the shaft shoulder positioning of the interior step of support (1) and driven shaft (11)；3rd rolling bearing (17) is by second bearing end cap
(13), the shaft shoulder positioning of the interior step of support (1) and driving shaft (18)；4th rolling bearing (24) is by support insert (32)
Interior step, 3rd bearing end cap (21) and driving shaft (18) the shaft shoulder positioning；5th rolling bearing (26) is inlayed by support
The shaft shoulder positioning of the interior step, fourth bearing end cap (25) and driven shaft (11) of block (32).
2. non-circular gear according to claim 1 drives rotary prism device, it is characterised in that the prism wedge (6),
Picture frame (4), the first rolling bearing (3), the 6th rolling bearing (31) and driven Knucle-gear (8) are using coaxially arranged.
3. non-circular gear according to claim 1 drives rotary prism device, it is characterised in that control system is according to rotation
The corner information of the driving shaft (18) that encoder (23) is obtained realizes feedback regulation, and control driving shaft (18) remains a constant speed rotation,
The anglec of rotation of prism wedge (6) is further accurately controlled, realizes that high precision light beam is scanned.
4. non-circular gear according to claim 1 drives rotary prism device, it is characterised in that using non-circular gear to reality
The existing first order is slowed down, spur gear wheel slows down to realizing the second level, to obtain accurate prism rotating speed, is to adapt to different arrangements
Various drive mechanisms such as, worm and gear can also be realized the second level subtract to, bevel gear using cylindric spiral gear by the substantive requirements of form
Speed；Or second level reducing gear is removed, by the way of non-circular gear is to directly driving prism rotation.
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| CN201611135907.4A CN106526836B (en) | 2016-12-12 | 2016-12-12 | The rotary prism device driven using non-circular gear |
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| CN201611135907.4A CN106526836B (en) | 2016-12-12 | 2016-12-12 | The rotary prism device driven using non-circular gear |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633853A (en) * | 2018-12-25 | 2019-04-16 | 同济大学 | A kind of self-cleaning rotating prism apparatus |
| CN109884769A (en) * | 2019-01-09 | 2019-06-14 | 同济大学 | A kind of high-precision target indicator device |
| CN111880281A (en) * | 2020-07-31 | 2020-11-03 | 同济大学 | Optical axis adjusting device |
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| CN101476980A (en) * | 2009-01-16 | 2009-07-08 | 北京工业大学 | Single-side engagement rolling point scanning measurement method and apparatus for non-circular gear error |
| CN102955251A (en) * | 2012-11-07 | 2013-03-06 | 同济大学 | Coarse and fine scanning rotating prism device |
| CN103149686A (en) * | 2013-03-07 | 2013-06-12 | 同济大学 | Synchronous belt drive rotary prism device |
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| CN109633853A (en) * | 2018-12-25 | 2019-04-16 | 同济大学 | A kind of self-cleaning rotating prism apparatus |
| CN109884769A (en) * | 2019-01-09 | 2019-06-14 | 同济大学 | A kind of high-precision target indicator device |
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| CN111880281B (en) * | 2020-07-31 | 2021-12-07 | 同济大学 | Optical axis adjusting device |
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