CN204166185U - For the flexible Hooke's hinge supporting mechanism of space remote sensing camera catoptron - Google Patents
For the flexible Hooke's hinge supporting mechanism of space remote sensing camera catoptron Download PDFInfo
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- CN204166185U CN204166185U CN201420597492.2U CN201420597492U CN204166185U CN 204166185 U CN204166185 U CN 204166185U CN 201420597492 U CN201420597492 U CN 201420597492U CN 204166185 U CN204166185 U CN 204166185U
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Abstract
This patent discloses a kind of flexible Hooke's hinge supporting mechanism for space remote sensing camera catoptron, its structure comprises: main body cross frame, bilateral hinge mounting cover, upper support seat, lower support seat, monolateral hinge mounting cover, flexible hinge, this mechanism uses four syllogic cylindrical pliable hinges, and arranged by ' ten ' word of coaxial-symmetrical and form Hooke's hinge, the bidimensional realizing minute surface rotates.The advantage of native system is: the bidimensional center of rotation of mechanism is in the same plane, avoids on two-dimensional direction, being produced axis drift phenomenon by support mirror body in rotation process; Flexible hinge is used to eliminate friction, unlubricated, gapless, kinematic accuracy is high, reproducible; Adopt symmetrical layout type, eliminate additional displacement, realize the stationarity of motion.
Description
Technical field:
The flexible Hooke's hinge supporting mechanism of a kind of space remote sensing camera catoptron, belongs to a kind of mirror center supporting mechanism applied in space remote sensing technical field.
Background technology:
In the practical application in whole space remote sensing field, to the supporting construction realizing intrinsic deflection among a small circle, not only propose high-resolution requirement, go back requirement claimed structure with microminaturization.People, after to all types of flexible support experimental exploring, progressively develop that volume is little, mechanical friction, gapless, move flexible hinge flexibly.
Flexure hinge mechanism make use of flexible member microdeformation and from the characteristic of replying, eliminates the idle running in transmission process and mechanical friction, can obtain the displacement resolution of superelevation.Subsequently, flexible hinge is widely used in the instrument and meters such as gyroscope, accelerometer, precision balance, STT missile, and obtains unprecedented high precision and stability.Flexible hinge is used for the finite angular displacements doing compound movement around axle, and its feature is: mechanical friction, gapless, autokinesis are high.
In space remote sensing field, catoptron occupies very consequence as the main optical element in optical system, and its precision directly determines the image quality of whole optical system.The support of catoptron is then the key factor affecting catoptron precision, the stability of the whole system of the total that its rationality directly determines.Therefore in its supporting way, some flexible links are added just necessary.
Patent No. CN201110046266.6 discloses a kind of Space Remote Sensors large caliber reflecting mirror ball hinged supporting mechanism, this structure has been uniformly distributed four L shape grooves in ball pivot surrounding, this design effectively adds elasticity release link, reduce erection stress and thermal stress to the impact of surface figure accuracy, but ball pivot self also exists many nonlinear problems, matching requirements are high, and under extreme operating environments, ball pivot work long hours easily wear and tear, the disease such as creep, can produce whole optical system can not the loss of accuracy of inversion.
Patent No. CN201120469256.9 discloses a kind of Novel long-stroke flexible Hooke's hinge, the flexible member that this Hooke's hinge adopts is reed, two dimension can export larger rotational travel, but because in motion process, this Hooke's hinge two-dimensional motion can be coupled, reed is when moving, the bending torsion that certainly will cause other one dimension reed of self, the kinetic stability of the other one dimension of direct impact, also this patent of drift in motion axle center can be caused to can be applicable to the working environment of medium accuracy, for the high-precision requirement in space remote sensing field, this design is still needed and is improved further.
Summary of the invention
This patent discloses the flexible Hooke's hinge supporting mechanism of a kind of space remote sensing camera catoptron, the meticulous swing of the two dimension for implementation space catoptron, provide a kind of effective technological approaches for high-precision spacing reflection mirror supports.
The flexible Hooke's hinge supporting mechanism of a kind of space remote sensing camera catoptron, its structure comprises: main body cross frame 1, bilateral hinge mounting cover 2, upper support seat 3, lower support seat 4, monolateral hinge mounting cover 5, flexible hinge 6, wherein:
Described main body cross frame 1 material is titanium alloy, there is the unit formation that four identical, four upper and lower, symmetrical distributions of unit are rendered as ' ten ' word symmetrical structure, described cellular construction is rectangular hollow structure, two ends have minor arc groove, arc radius equals the radius of flexible hinge 6, and minor arc well width equals the width at flexible hinge 6 two ends, and each minor arc groove two ends have threaded hole;
Described bilateral hinge mounting cover 2 is titanium alloy material, one-piece construction is a trapezoid block, chamfered is carried out at trapezoid block two lower base angles, and bottom has minor arc groove, arc radius size equals the radius of flexible hinge 6, minor arc well width equals the width of flexible hinge 6 interlude, and upper bottom surface centerline has two and marks closely threaded hole, and the two ends of minor arc groove respectively have two counter sinks;
Described upper support seat 3 is identical with lower support seat 4 structure, and material is titanium alloy, one piece of rectangular slab centered by main structure body, upper end is a cylinder boss, boss has threaded hole, for the connecting interface of whole mechanism and top and the bottom, and has clamp screw pit in boss radial position; Boss has the groove of two Linear cut, for discharging the torsion of the nonrotational dimension of supporting seat, respectively there is a rectangular block both sides, lower end of central plate, the bottom of each rectangular block has minor arc groove, arc radius size equals the radius of flexible hinge 6, minor arc well width equals the width of flexible hinge 6 interlude, and each minor arc groove two ends all have two threaded holes, and two minor arc grooves are coaxial;
Described monolateral hinge mounting cover 5 is titanium alloy material, one-piece construction is a trapezoid block, chamfered is carried out at trapezoid block two lower base angles, and have minor arc groove in bottom, arc radius size equals the radius of flexible hinge 6, minor arc well width equals the width at flexible hinge 6 two ends, and the two ends of minor arc groove respectively have a counter sink;
Main body cross frame 1 fixes the two ends of four flexible hinges 6 by being threaded with 8 monolateral hinge mounting covers 5; Upper support seat 3, lower support seat 4 are connected respectively by with two bilateral hinge mounting cover 2 screws the interlude fixing two coaxial flexible hinges; Two flexible hinges 6 in upper support seat 3 stationary body cross frame 1 one directions, two flexible hinges 6 of lower support seat 4 stationary body cross frame 1 vertical direction, by the series connection of flexible hinge 6, make all assembling parts as a whole, upper support seat 3 has and the connecting interface screw thread of mirror body flange and clamp screw pit, and lower support seat 4 is processed with the interface thread and clamp screw pit that are connected with bottom support.
In described main body cross frame 1, the radius size precision of the minor arc groove at each unit two ends is H7, and the center of circle exceeds string plane 0.25mm.
The radius size precision of the minor arc groove in described bilateral hinge mounting cover 2 on bottom is H7, and the center of circle is lower than mounting cover bottom surface 0.25mm.
The radius size precision of the minor arc groove on described upper support seat 3 and lower support seat 4 bottom is H7, and the center of circle is lower than supporting seat bottom surface 0.25mm.
The radius size precision of the minor arc groove on described monolateral hinge mounting cover 5 bottom is H7, and center of circle mounting cover is lower than bottom surface 0.25mm.
The principle of work of whole mechanism is as follows: when minute surface is parallel to micro-rotation of wherein one dimension axis, the hinge two ends fixed by main body cross frame and monolateral hinge mounting cover keep fixing, upper (lower) supporting seat twists together with the opposite from hinge two ends, hinge stage casing that bilateral hinge mounting cover is fixing, in rotation process, pivot center remains constant; When the axis that minute surface is any direction carries out the micro-rotation of bidimensional, rotation will decompose by vertical bidimensional hinge centres axis, still keep fixing by main body cross frame together with the hinge two ends that monolateral hinge mounting cover is fixing, relatively respective respectively hinge two ends, the hinge stage casing fixed together with bilateral hinge mounting cover of upper (lower) supporting seat twist, in whole rotation process, article two, vertical axis intersection point remains unchanged, and namely center of rotation remains unchanged.Any axis drift phenomenon is there is not in whole motion process.
The flexible Hooke's hinge supporting mechanism of this space remote sensing camera catoptron compared with prior art, has the following advantages and beneficial effect:
The bidimensional Hooke's hinge of this patent remains in stable condition in motion process, and bidimensional can not produce coupling between rotating, and meets accuracy requirement during assembling all the time, can not produce the drift of axis in motion process;
Use flexible hinge as support link completely, avoid the wearing and tearing using traditional ball pivot to bring, viscous and stiction equal error, make whole system transport motive friction-free, precision is high, resolution advantages of higher;
This structure has stronger assembled exchange performance, and its all parts comprises flexible hinge and can change according to actual needs, and can not have an impact to the precision of mechanism after debuging;
Adopt symmetrical layout type, effectively can eliminate additional displacement, ensure the stability of motion;
Mechanism has very high precision on bidimensional operative orientation, also has good rigidity simultaneously, can bear certain load on NOT-function direction;
The rigidity of whole hinge, corner range etc. is all can be designed by actual demand, therefore has larger range of application.
Accompanying drawing illustrates:
Fig. 1 is space remote sensing camera catoptron flexible Hooke's hinge supporting mechanism schematic diagram, and number in the figure is as follows:
1 main body cross frame, 2 bilateral hinge mounting covers, 3 upper support seats, 4 lower support seats, 5 monolateral hinge mounting covers, 6 flexible hinges.
Fig. 2 is space remote sensing camera catoptron flexible Hooke's hinge supporting mechanism vertical view.
Fig. 3 is supporting mechanism main body cross frame structural drawing.
Fig. 4 is bilateral hinge mounting cover.
Fig. 5 is the upper and lower clamping support figure of supporting construction.
Fig. 6 is monolateral hinge mounting cover.
Fig. 7 is flexible hinge schematic diagram.
Embodiment:
For better understanding this patent, below in conjunction with accompanying drawing to this structure seat further instruction, but the claimed scope of this patent is not limited to the scope that embodiment represents.
As shown in Fig. 1,2,3,4,5,6,7, the flexible Hooke's hinge supporting mechanism of a kind of space remote sensing camera catoptron bidimensional mainly comprises: main body cross frame, bilateral hinge mounting cover, upper support seat, lower support seat, monolateral hinge mounting cover and flexible hinge form.
Main body cross frame material is titanium alloy, global shape is ' ten ' word symmetrical structure, each unit is rectangular hollow structure, two ends have minor arc groove, arc radius equals the radius of flexible hinge, precision is H7, the center of circle exceeds string plane 0.25mm, minor arc well width equals the width at flexible hinge two ends, each minor arc groove two ends have threaded hole, and four unit connect firmly at central party plate up and down respectively, and structure is in ' ten ' word distribution, unidirectional four minor arc grooves are coaxial, and the minor arc fluted shaft line of both direction is in ' ten ' word; The requirement of the right alignment of the supporting base of two coaxial hinges is for ensureing the appearance avoiding unnecessary stress in rotation process; The axis of bidimensional supporting base in same plane, must guarantee the drift that there will not be center in rotation process; Need to carry out bidimensional Rigidity Calculation; Also need to carry out light-weight design.
Bilateral hinge mounting cover material is titanium alloy, one-piece construction is a trapezoid block, and bottom has minor arc groove, arc radius size equals the radius of flexible hinge, precision is H7, and the center of circle is lower than bottom surface 0.25mm, and minor arc well width equals the width of flexible hinge interlude, upper bottom surface centerline has two and marks closely threaded hole, and the two ends of minor arc groove respectively have two counter sinks.
In order to reduce fabrication design complexity, in this design, lower support seat and upper support seat are identical material and version, one piece of rectangular slab centered by main structure body, upper end is a cylinder boss, boss has threaded hole, for the connecting interface of whole mechanism and top and the bottom, and has clamp screw pit in boss radial position, boss has the groove of two Linear cut, for discharging the torsion of the nonrotational dimension of supporting seat, respectively there is a rectangular block both sides, lower end of central plate, the bottom of each rectangular block has minor arc groove, arc radius size equals the radius of flexible hinge (6), precision is H7, the center of circle is lower than bottom surface 0.25mm, minor arc well width equals the width of flexible hinge (6) interlude, each minor arc groove two ends all have two threaded holes, and two minor arc grooves are coaxial, two minor arc grooves are spaced apart the width of main body cross frame central party plate and the summation of flexible hinge overall width, to ensure that both sides hinge does not produce space interference, the thickness of whole supporting seat rectangular slab will meet the rigidity of another dimension perpendicular to axis.
Described monolateral hinge mounting cover material is titanium alloy, one-piece construction is a trapezoid block, and have minor arc groove in bottom, arc radius size equals the radius of flexible hinge, precision is H7, the center of circle is lower than bottom surface 0.25mm, and minor arc well width equals the width at flexible hinge two ends, and the two ends of minor arc groove respectively have a counter sink.
According to integrally-built rigidity requirement, we select 6000 of riverhawk company serial hinges, this flexible hinge is cylindrical hinge, flexible hinge external cylindrical surface is divided into three sections, two end portions inside is connected to a moving whole, occur mutually to move by reed is bending with center section, and the width of each side is about the half of interlude.
The connected mode of whole mechanism element is: main body cross frame fixes the two ends of four flexible hinges by being threaded with 8 monolateral hinge mounting covers; Upper and lower supporting seat fixes the interlude of two coaxial flexible hinges respectively by being threaded with two bilateral hinge mounting covers; Two flexible hinges of a upper support seat stationary body cross frame dimension, two hinges of another dimension of lower support seat supporting and fixing main body cross frame, by the series connection of flexible hinge, make all assembling parts as a whole; Upper support seat has and the connecting interface screw thread of mirror body flange and clamp screw pit, and lower support seat is processed with the interface thread and clamp screw pit that are connected with bottom support.
The principle of work of whole mechanism is as follows: when minute surface is parallel to micro-rotation of wherein two hinge centres axis, the hinge two ends fixed by main body cross frame and monolateral hinge mounting cover keep fixing, upper (lower) supporting seat twists together with the opposite from hinge two ends, hinge stage casing that bilateral hinge mounting cover is fixing, in rotation process, pivot center remains constant; When the axis that minute surface is any direction carries out the micro-rotation of bidimensional, rotation will decompose by vertical bidimensional hinge centres axis, still keep fixing by main body cross frame together with the hinge two ends that monolateral hinge mounting cover is fixing, relatively respective respectively hinge two ends, the hinge stage casing fixed together with bilateral hinge mounting cover of upper (lower) supporting seat twist, in whole rotation process, article two, vertical axis intersection point remains unchanged, and namely center of rotation remains unchanged.Any axis drift phenomenon is there is not in whole motion process.
For ensureing the consistance of Hooke's hinge two-dimensional motion, the flexible hinge seat of 4 the equal models adopted in this patent is same stiffness structure design.
Connected modes all in structure is and is threaded, and for ensureing connection reliability, must smear locking glue when being threaded.
For meeting the accuracy requirement of environment for use to mechanism, in the design's process, each parts strictly will meet following process and assemble and require:
Comprise singly (two) limit hinge mounting cover and all hinges and the requirement that surface of contact all will ensure cylindricity IT7 is installed.
The right alignment IT7 requirement of upper support seat (lower support seat) hinge installation place.
The right alignment IT7 requirement of same dimension hinge installation place on main body cross frame.
The requirement of bidimensional axis verticality IT7 on hinge centres frame.
The requirement of bidimensional axial plane degree IT7 on hinge centres frame.
With on one dimension, the symmetry IT7 requirement of hinge installation place, both sides.
Claims (5)
1. the flexible Hooke's hinge supporting mechanism of space remote sensing camera catoptron, its structure comprises: main body cross frame (1), bilateral hinge mounting cover (2), upper support seat (3), lower support seat (4), monolateral hinge mounting cover (5), flexible hinge (6), is characterized in that:
Described main body cross frame (1) has four identical unit formations, four upper and lower, symmetrical distributions of unit are rendered as ' ten ' word symmetrical structure, described cellular construction is rectangular hollow structure, two ends have minor arc groove, arc radius equals the radius of flexible hinge (6), minor arc well width equals the width at flexible hinge (6) two ends, and each minor arc groove two ends have threaded hole;
Described bilateral hinge mounting cover (2) one-piece construction is a trapezoid block, chamfered is carried out at trapezoid block two lower base angles, and bottom has minor arc groove, arc radius size equals the radius of flexible hinge (6), minor arc well width equals the width of flexible hinge (6) interlude, upper bottom surface centerline has two and marks closely threaded hole, and the two ends of minor arc groove respectively have two counter sinks;
Described upper support seat (3) is identical with lower support seat (4) structure, one piece of rectangular slab centered by main structure body, upper end is a cylinder boss, boss has threaded hole, for the connecting interface of whole mechanism and top and the bottom, and have clamp screw pit in boss radial position; Boss has the groove of two Linear cut, for discharging the torsion of the nonrotational dimension of supporting seat, respectively there is a rectangular block both sides, lower end of central plate, the bottom of each rectangular block has minor arc groove, arc radius size equals the radius of flexible hinge (6), minor arc well width equals the width of flexible hinge (6) interlude, and each minor arc groove two ends all have two threaded holes, and two minor arc grooves are coaxial;
Described monolateral hinge mounting cover (5) one-piece construction is a trapezoid block, chamfered is carried out at trapezoid block two lower base angles, and have minor arc groove in bottom, arc radius size equals the radius of flexible hinge (6), minor arc well width equals the width at flexible hinge (6) two ends, and the two ends of minor arc groove respectively have a counter sink;
Main body cross frame (1) fixes the two ends of four flexible hinges (6) by being threaded with 8 monolateral hinge mounting covers (5); Upper support seat (3), lower support seat (4) are connected respectively by with two bilateral hinge mounting cover (2) screws the interlude fixing two coaxial flexible hinges; Two flexible hinges (6) in upper support seat (3) stationary body cross frame (1) direction, two flexible hinges (6) of lower support seat (4) stationary body cross frame (1) vertical direction, by the series connection of flexible hinge (6), make all assembling parts as a whole, upper support seat (3) has and the connecting interface screw thread of mirror body flange and clamp screw pit, and lower support seat (4) is processed with the interface thread and clamp screw pit that are connected with bottom support.
2. the flexible Hooke's hinge supporting mechanism of a kind of space remote sensing camera catoptron according to claim 1, it is characterized in that: in described main body cross frame (1), the radius size precision of the minor arc groove at each unit two ends is H7, and the center of circle exceeds string plane 0.25mm.
3. the flexible Hooke's hinge supporting mechanism of a kind of space remote sensing camera catoptron according to claim 1, it is characterized in that: the radius size precision of the minor arc groove in described bilateral hinge mounting cover (2) on bottom is H7, and the center of circle is lower than mounting cover bottom surface 0.25mm.
4. the flexible Hooke's hinge supporting mechanism of a kind of space remote sensing camera catoptron according to claim 1, it is characterized in that: the radius size precision of the minor arc groove on described upper support seat (3) and lower support seat (4) bottom is H7, and the center of circle is lower than supporting seat bottom surface 0.25mm.
5. the flexible Hooke's hinge supporting mechanism of a kind of space remote sensing camera catoptron according to claim 1, it is characterized in that: the radius size precision of the minor arc groove on described monolateral hinge mounting cover (5) bottom is H7, and center of circle mounting cover is lower than bottom surface 0.25mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360455B (en) * | 2014-10-16 | 2016-08-24 | 中国科学院上海技术物理研究所 | A kind of space remote sensing camera speculum flexibility Hooke's hinge supporting mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360455B (en) * | 2014-10-16 | 2016-08-24 | 中国科学院上海技术物理研究所 | A kind of space remote sensing camera speculum flexibility Hooke's hinge supporting mechanism |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20171016 |
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| CF01 | Termination of patent right due to non-payment of annual fee |