CN102436052B - Optical axis levelling and gravity unloading supporting method of large diameter lightweight mirror - Google Patents
Optical axis levelling and gravity unloading supporting method of large diameter lightweight mirror Download PDFInfo
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- CN102436052B CN102436052B CN201110418180.1A CN201110418180A CN102436052B CN 102436052 B CN102436052 B CN 102436052B CN 201110418180 A CN201110418180 A CN 201110418180A CN 102436052 B CN102436052 B CN 102436052B
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- fixed pulley
- suspender belt
- wire rope
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Abstract
The invention provides an optical axis levelling and gravity unloading supporting method of a large diameter lightweight mirror. The method has the following advantages: the characteristics that the pulley block lifting ropes can adaptively shift and the provided pull is changeless are utilized to realize that not only supporting force but also lifting and pulling forces can be provided to the large diameter lightweight mirror in the level state of the optical axis and the supporting force and the lifting and pulling forces can realize adaptive equilibrium; deformation of the large diameter lightweight mirror caused by gravity effect can be furthest reduced in the environment of ground gravity field, thus improving the optical detection precision; and meanwhile, the method has terrific engineering feasibility.
Description
Technical field
The invention belongs to optical field, relate to a kind of catoptron method for supporting.
Background technology
Large-aperture optical part surface type detects, it is an important step of optics processing, directly determined the precision of optical element processing, but the large-aperture optical part that is used for Space Remote Sensors, need to adopt light-weight design, its absolute rigidity is lower, and under the ground gravity environment, different supporting forms and holding state can cause different gravity deformation results.
Calendar year 2001 the 28th is rolled up the paper of having published one piece " finite element analysis that the aperture lightweight mirror supports " by name on the 5th phase " photoelectric project ", wherein the gravity deformation to the lightweight mirror has carried out finite element analysis, and proposed to use the form of mercury suspender belt to provide support as lightweight mirror optical axis horizontality, use prolate strip sealing bag, can mercury forms the mercury suspender belt, and is placed in the semi arch fixed sturcture, then, the lightweight mirror is placed on the mercury suspender belt with the optical axis horizontality.
Adopt that the weak point of this method for supporting is 1, the mercury suspender belt can only provide support power at second circular arc, first circular arc provides downward pressure, and is unreasonable on mechanics supports; 2, be subjected to the restriction of mercury sling structure, its support shape that forms the strong point can't be consistent, caused the extra erection stress of easy introducing, and then the light-duty mirror that causes distortion mixes with the distortion that gravity causes, influence final optical detection data and judge; 3, because mercury is liquid, though pushed by weight, can adapt to the shape of the face of being extruded automatically, also just because of be liquid, has flowability, the state that this pressurized is shaped is also unstable, is very easy to be subjected to extraneous vibration and changes, and promptly the lightweight mirror uses this method for supporting, be to be in the weak stationary state that is highly brittle, cause the displacement of trace back and forth to change easily, finally cause the test mode instability, the test data deviation is very big; 4, mercury has severe toxicity, and is harmful, lacks security aspect engineering construction.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiency that suspender belt form in the past can only provide second circular arc to support, provide the light-duty mirror optical axis of a kind of heavy caliber horizontal gravity discharging method, reduced the distortion of light-duty mirror under gravity environment.
Technical solution of the present invention is: the horizontal gravity unloading of a kind of aperture lightweight mirror optical axis method for supporting, and step is as follows:
(1) fixes first fixed pulley, second fixed pulley, the 3rd fixed pulley and the 4th fixed pulley in the horizontal direction from left to right successively, arranged beneath first travelling block of second fixed pulley and the 3rd fixed pulley; Distance between the outside tangent line of first fixed pulley and the outside tangent line of the 4th fixed pulley equals the diameter of disc catoptron, first travelling block is positioned on the perpendicular bisector of the line of centres of second fixed pulley and the 3rd fixed pulley, and first travelling block is fixed on the centre of lever crossbeam;
(2) center on by the semi-circumference of suspender belt the disc catoptron, one end of suspender belt is walked around the quadrant of first travelling block and through second fixed pulley, the other end of suspender belt walks around the quadrant of the 4th travelling block and through the 3rd fixed pulley, the two ends of suspender belt connect below first travelling block and first travelling block and lever crossbeam are supported;
(3) at monosymmetric fixed installation second travelling block and the 3rd travelling block of lever crossbeam, on second travelling block, hang the 4th travelling block and the 5th travelling block respectively, on the 3rd travelling block, hang the 6th travelling block and the 7th travelling block respectively by wire rope by wire rope;
(4) place equally spaced eight suspension centres of choosing in the semi-circumference that is not centered on by suspender belt of disc catoptron, each suspension centre is divided into the semicircle dish type area that equates with the line at disc catoptron center;
In twos one group from left to right of (5) eight suspension centre, and hang respectively on the 4th travelling block, the 5th travelling block, the 6th travelling block, the 7th travelling block by wire rope.
On the suspender belt between described first fixed pulley and the disc catoptron, on the suspender belt between the 4th fixed pulley and the disc catoptron, on the wire rope between second travelling block and the 4th travelling block, on the wire rope between the 3rd travelling block and the 7th travelling block, the 4th travelling block and and its wherein wire rope between any one suspension centre of hanging on, perhaps the 7th travelling block and and its hang wherein be connected with counterweight on the wire rope between any one suspension centre.
The material of described suspender belt is a rubber.The spot of described suspension centre for adopting the XM-23 tackifier to form.
The present invention's advantage compared with prior art is:
(1) the inventive method utilize the pulley blocks lifting rope can adaptive displacement, guarantee the characteristics of two ends lifting rope stress equalization simultaneously, the anchorage force of second circular arc and the power of lifting of first circular arc are combined, realized the adaptive equalization of both direction power, for aperture lightweight mirror optical axis horizontality provides the engineering construction method of reasonable supporting form;
(2) owing to provide the power that lifts to support in light-duty mirror upper semi-circle segmental arc, therefore under the optical axis horizontality, reduce the situation that second circular arc bears all gravity, also just directly reduced the bearing stress of this part, and the supporting deformation situation of bringing by bearing stress;
(3) because each connection strong point all is that employing is fixedly connected, there is not the influence of vibration deformation.Holding state is highly stable, supports for optical surface shape is detected the detection that provides stable;
(4) owing to can use the form of counterweight, the tractive force that promptly can adjust each wire rope in good time and provided can guarantee each point anchorage force infinite tendency ideal model;
(5) the inventive method can adapt to support, the detection that all possess the light-duty mirror of heavy caliber of complete external cylindrical surface feature.
Description of drawings
Fig. 1 is the principle schematic of the horizontal gravity discharging method of the light-duty mirror optical axis of heavy caliber of the present invention.
Embodiment
As shown in Figure 1, be the schematic diagram of the inventive method, adopt the related frock of the inventive method to comprise suspender belt, the light-duty mirror of heavy caliber, suspension centre, wire rope, counterweight, travelling block, lever crossbeam, fixed pulley etc.
Key step is as follows:
(1) fixes first fixed pulley, second fixed pulley, the 3rd fixed pulley and the 4th fixed pulley in the horizontal direction from left to right successively, arranged beneath first travelling block of second fixed pulley and the 3rd fixed pulley; Distance between the outside tangent line of first fixed pulley and the outside tangent line of the 4th fixed pulley equals the diameter of disc catoptron, first travelling block is positioned on the perpendicular bisector of the line of centres of second fixed pulley and the 3rd fixed pulley, and first travelling block is fixed on the centre of lever crossbeam;
(2) center on by the semi-circumference of suspender belt the disc catoptron, one end of suspender belt is walked around the quadrant of first travelling block and through second fixed pulley, the other end of suspender belt walks around the quadrant of the 4th travelling block and through the 3rd fixed pulley, the two ends of suspender belt connect below first travelling block and first travelling block and lever crossbeam are supported;
(3) at monosymmetric fixed installation second travelling block and the 3rd travelling block of lever crossbeam, on second travelling block, hang the 4th travelling block and the 5th travelling block respectively, on the 3rd travelling block, hang the 6th travelling block and the 7th travelling block respectively by wire rope by wire rope;
(4) place equally spaced eight suspension centres of choosing in the semi-circumference that is not centered on by suspender belt of disc catoptron, each suspension centre is divided into the semicircle dish type area that equates with the line at disc catoptron center;
In twos one group from left to right of (5) eight suspension centre, and hang respectively on the 4th travelling block, the 5th travelling block, the 6th travelling block, the 7th travelling block by wire rope.
At about bore φ 1000mm, have complete cylindrical shape (round pie, thickness is greater than 150mm), use that the welding of ULE honeycomb forms, the lightweight degree is higher than 60% the light-duty mirror of heavy caliber, the horizontal gravity unloading of its optical axis embodiment is as follows:
(1) the arbitrary semicircle of definition is the first half, and with these semi-cylindrical 8 five equilibriums, is central plane with the barycenter aspect then, directly glues and the benchmark of suspension centre as the back gum spot;
(2) use XM-23 as adhesive, bondline thickness is 1mm, and the gum spot size is Φ 80mm, and 8 one-level suspension centres are directly bonded on the corresponding face of cylinder of light-duty mirror;
(3) select Φ 3mm wire rope for use,, use 4 groups of wire rope to link to each other in twos 8 suspension centres, and be suspended from respectively on the 4th travelling block, the 5th travelling block, the 6th travelling block, the 7th travelling block by order from left to right;
(4) by from left to right order, the 4th travelling block, the 5th travelling block are suspended from second travelling block after with the connection of Φ 3mm wire rope, in like manner, the 6th travelling block, the 7th travelling block are suspended from the 3rd travelling block.
(5) second travelling block, the 3rd travelling block symmetry are mounted to the lever crossbeam two ends, and first travelling block is installed on the lever crossbeam between two parties.
(6) use the wide rubber mass suspender belt of 80mm, the semi-circumference of disc catoptron is centered on, the two ends of suspender belt use Φ 5mm wire rope to connect, form closed loop, Φ 5mm wire rope one end walked around first travelling block and through second fixed pulley, the other end walks around the 4th travelling block and through the 3rd fixed pulley, the two ends of Φ 5mm wire rope connect below first travelling block and first travelling block and lever crossbeam are supported;
(7) so far, the measured lens Lower Half uses suspender belt to support, and cooperates with pulley blocks by lifting rope, and the power of lifting of suspender belt anchorage force and one-level suspension centre is combined, and realizes the stressed adaptive equalization of upper and lower two semi arches.
The content that is not described in detail in the instructions of the present invention belongs to those skilled in the art's known technology.
Claims (4)
1. the horizontal gravity of aperture lightweight mirror optical axis unloads method for supporting, it is characterized in that step is as follows:
(1) fixes first fixed pulley, second fixed pulley, the 3rd fixed pulley and the 4th fixed pulley in the horizontal direction from left to right successively, arranged beneath first travelling block of second fixed pulley and the 3rd fixed pulley; Distance between the outside tangent line of first fixed pulley and the outside tangent line of the 4th fixed pulley equals the diameter of disc catoptron, first travelling block is positioned on the perpendicular bisector of the line of centres of second fixed pulley and the 3rd fixed pulley, and first travelling block is fixed on the centre of lever crossbeam;
(2) center on by the semi-circumference of suspender belt the disc catoptron, one end of suspender belt is walked around the quadrant of first fixed pulley and through second fixed pulley, the other end of suspender belt walks around the quadrant of the 4th fixed pulley and through the 3rd fixed pulley, the two ends of suspender belt connect below first travelling block and first travelling block and lever crossbeam are supported;
(3) at monosymmetric fixed installation second travelling block and the 3rd travelling block of lever crossbeam, on second travelling block, hang the 4th travelling block and the 5th travelling block respectively, on the 3rd travelling block, hang the 6th travelling block and the 7th travelling block respectively by wire rope by wire rope;
(4) place equally spaced eight suspension centres of choosing in the semi-circumference that is not centered on by suspender belt of disc catoptron, each suspension centre is divided into the semicircle dish type area that equates with the line at disc catoptron center;
In twos one group from left to right of (5) eight suspension centre, and hang respectively on the 4th travelling block, the 5th travelling block, the 6th travelling block, the 7th travelling block by wire rope.
2. the horizontal gravity unloading of a kind of aperture lightweight mirror optical axis according to claim 1 method for supporting, it is characterized in that: on the suspender belt between described first fixed pulley and the disc catoptron, on the suspender belt between the 4th fixed pulley and the disc catoptron, on the wire rope between second travelling block and the 4th travelling block, on the wire rope between the 3rd travelling block and the 7th travelling block, the 4th travelling block and and its wherein wire rope between any one suspension centre of hanging on, perhaps the 7th travelling block and and its hang wherein be connected with counterweight on the wire rope between any one suspension centre.
3. the horizontal gravity unloading of a kind of aperture lightweight mirror optical axis according to claim 1 and 2 method for supporting, it is characterized in that: the material of described suspender belt is a rubber.
4. the horizontal gravity unloading of a kind of aperture lightweight mirror optical axis according to claim 1 and 2 method for supporting is characterized in that: the spot of described suspension centre for adopting the XM-23 tackifier to form.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110418180.1A CN102436052B (en) | 2011-12-13 | 2011-12-13 | Optical axis levelling and gravity unloading supporting method of large diameter lightweight mirror |
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| CN201110418180.1A CN102436052B (en) | 2011-12-13 | 2011-12-13 | Optical axis levelling and gravity unloading supporting method of large diameter lightweight mirror |
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| CN102436052A CN102436052A (en) | 2012-05-02 |
| CN102436052B true CN102436052B (en) | 2013-07-24 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344209B (en) * | 2013-06-27 | 2016-06-01 | 北京空间机电研究所 | A kind of surface shape of reflector in zero gravity state testing method |
| CN104678533A (en) * | 2015-02-13 | 2015-06-03 | 中国科学院长春光学精密机械与物理研究所 | Ground gravity unloading support method for large spatial reflector |
| CN104793315A (en) * | 2015-03-27 | 2015-07-22 | 苏州华徕光电仪器有限公司 | Suspension strip type supporting structure for reflector |
| JP6808381B2 (en) * | 2016-07-07 | 2021-01-06 | キヤノン株式会社 | Holding device, projection optical system, exposure device, and article manufacturing method |
| CN109188648B (en) * | 2018-09-11 | 2020-05-15 | 中国科学院长春光学精密机械与物理研究所 | Floating support device for unloading space optical load ground gravity |
| CN115308874B (en) * | 2022-09-06 | 2023-07-14 | 中国科学院长春光学精密机械与物理研究所 | Interference-free gravity unloading mechanism of large-caliber reflector |
| CN116560035B (en) * | 2023-07-12 | 2023-08-29 | 长春理工大学 | Standard plane mirror supporting mechanism for optical adjustment detection |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162891A (en) * | 2011-04-20 | 2011-08-24 | 北京空间机电研究所 | Secondary mirror support structure of space optical remote sensor |
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| JP4955166B2 (en) * | 2001-09-25 | 2012-06-20 | Ｎｅｃ東芝スペースシステム株式会社 | Space telescope |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162891A (en) * | 2011-04-20 | 2011-08-24 | 北京空间机电研究所 | Secondary mirror support structure of space optical remote sensor |
Non-Patent Citations (5)
| Title |
|---|
| 《大口径空间反射镜高精度面形检测的支撑技术研究》;彭扬林等;《应用光学》;20111130;第32卷(第6期);1166-1172页 * |
| 《大口径超轻型反射镜定位和支撑方案研究》;陈晓丽等;《航天返回与遥感》;20100630;第31卷(第3期);15-20页 * |
| JP特开2003-98441A 2003.04.03 |
| 彭扬林等.《大口径空间反射镜高精度面形检测的支撑技术研究》.《应用光学》.2011,第32卷(第6期),1166-1172页. |
| 陈晓丽等.《大口径超轻型反射镜定位和支撑方案研究》.《航天返回与遥感》.2010,第31卷(第3期),15-20页. |
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