CN109656013A - A kind of large aperture telescope primary mirror cell assembly method based on laser tracker - Google Patents
A kind of large aperture telescope primary mirror cell assembly method based on laser tracker Download PDFInfo
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- CN109656013A CN109656013A CN201811541725.6A CN201811541725A CN109656013A CN 109656013 A CN109656013 A CN 109656013A CN 201811541725 A CN201811541725 A CN 201811541725A CN 109656013 A CN109656013 A CN 109656013A
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- aperture telescope
- mirror cell
- laser tracker
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/16—Housings; Caps; Mountings; Supports, e.g. with counterweight
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Astronomy & Astrophysics (AREA)
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Abstract
Large aperture telescope primary mirror cell assembly method provided by the invention based on laser tracker, establishes the large aperture telescope primary mirror two-dimensional coordinate system using laser tracker；It is positioned according to position of the large aperture telescope primary mirror two-dimensional coordinate system to primary mirror support pad；Large aperture telescope primary mirror cell two-dimensional coordinate system is established using laser tracker；It is positioned according to position of the large aperture telescope primary mirror cell two-dimensional coordinate system to primary mirror cell's support construction；Corresponding primary mirror support pad and the connection of primary mirror cell's support construction are compared, position differ by more than flexible link can deviation range then primary mirror cell's support construction is adjusted, large aperture telescope primary mirror cell assembly method provided by the invention based on laser tracker, the step of specific tooling is processed in conventional method is abandoned, the installation site of large aperture telescope primary mirror support pad and large aperture telescope primary mirror cell support construction is positioned using laser tracker, it reduces costs and avoids waste, effectively increase positioning accuracy.
Description
Technical field
The present invention relates to Systems for optical inspection technical field, in particular to a kind of heavy caliber based on laser tracker is looked in the distance
Mirror primary mirror cell assembly method.
Background technique
Optical telescope is that scientist detects the essential tool of tera incognita, with the detection of farther apparent target
The bore of demand, telescope is also gradually increased.The installation step of traditional optical telescope primary mirror cell are as follows: (1) using special fixed
Primary mirror is supported pad bonding, such as customization and the big aluminium sheet tooling of primary mirror by the tooling of system, and it is viscous that supporting pad is reserved in tooling
Position is connect, positioning bonding is carried out to supporting pad；(2) flexible support structure anchor point is gone out by machine tooling；(3) by special
Primary mirror is put into mirror cell by hoisting tool, while guaranteeing that supporting pad is aligned with support construction.It is traditional but with the increase of bore
The shortcomings that primary mirror cell's assembly method is more prominent: (1) the tooling size customized is big, the lathe of processing is required to increase, support
Pad bonding location positioning accuracy is difficult to ensure；(2) tooling customized only uniquely can be used the identical supporting way primary mirror of identical bore,
Do not have versatility, causes the increase of cost and the waste of resource；(3) for entirely supporting for adjustment process, this side
Method serious forgiveness is low and goes wrong and is not easy to check, once there is mistake, the bonding location and support knot of supporting pad in machine tooling
The position of structure can then malfunction, and lead to the mistake of entire support system, due to the increase of primary mirror size, supporting pad and support construction
Quantity is consequently increased, and also increases difficulty to the investigation of mistake.
Measurement efficiency higher measuring tool when laser tracker is a kind of high measurement accuracy, measurement range Datong District, its benefit
With matched target ball and target seat acquisition space characteristics point position and the relative positional relationship for measuring each point.It is answered extensively
In the industry for aircraft manufacturing assembly, auto manufacturing etc. with large scale high-precision requirement, but laser tracker is answered
For positioning the assembly of large aperture telescope primary mirror cell there is not yet similar report.
Summary of the invention
Have in view of that, it is necessary in view of the defects existing in the prior art, provide it is a kind of be applied to using laser tracker it is big
The installation site of Aperture Telescope primary mirror support pad and large aperture telescope primary mirror cell support construction, reduces costs and avoids wave
Take and effectively increase the large aperture telescope primary mirror cell assembly method of positioning accuracy.
To achieve the above object, the present invention adopts the following technical solutions:
A kind of large aperture telescope primary mirror cell assembly method based on laser tracker, the large aperture telescope primary mirror cell
It is inside provided with large aperture telescope primary mirror, the back side of the large aperture telescope primary mirror cell is connected with several primary mirror cells support knot
Structure, the back side of the large aperture telescope primary mirror are provided with several primary mirror support pads, a mutual primary mirror support pad
And primary mirror cell's support construction is connected by a flexible link, which is characterized in that is included the following steps:
The large aperture telescope primary mirror two-dimensional coordinate system is established using laser tracker；
It is positioned according to position of the large aperture telescope primary mirror two-dimensional coordinate system to the primary mirror support pad；
Large aperture telescope primary mirror cell two-dimensional coordinate system is established using laser tracker；
Determined according to position of the large aperture telescope primary mirror cell two-dimensional coordinate system to primary mirror cell's support construction
Position；
The corresponding primary mirror support pad and the connection of primary mirror cell's support construction are compared, position difference is super
Cross the flexible link can deviation range then primary mirror cell's support construction is adjusted.
In some preferred embodiments, the large aperture telescope primary mirror two-dimensional coordinate is being established using laser tracker
In the step of being, include the following steps:
Several described primary mirror support pads are numbered one by one, are denoted as supporting pad A1, A2 ... An respectively；
Using the laser tracker as reference, using the back side of the large aperture telescope primary mirror as datum level P, target is utilized
If mark ball detects the P1 that does of the datum level P, the coordinate of P2 ... Pn is denoted as Pi (xi, yi, zi), to obtain the datum level P
Equation ax+by+cz+d=0 and normal vector N (a, b, c), a, b, c are not 0 simultaneously；
If the aperture edge for acquiring the large aperture telescope primary mirror centre bore does C1, C2 ... Cn each point coordinate is denoted as
Ci (xi, yi, zi), Ci is projected on the benchmark P optimized using least square method and obtained center of circle O1 coordinate (x0, y0,
z0)；
Choose any point M1 on the datum level P, x-axis be denoted as with O1M1 line, on the datum level P perpendicular to
The line of O1N1 is denoted as y-axis, establishes the large aperture telescope primary mirror two-dimensional coordinate system.
In some preferred embodiments, large aperture telescope primary mirror cell two dimension seat is being established using laser tracker
In the step of mark system, include the following steps:
Several described axial support structures are numbered one by one, are denoted as B1, B2 ... Bn respectively；
Using the laser tracker as reference, using the back side of the large aperture telescope primary mirror cell as datum level R, utilize
If target ball detects the R1 that does of the datum level R, the coordinate of R2 ... Rn is denoted as Ri (xi, yi, zi), to obtain the benchmark
Face R equation ax+by+cz+d=0 and normal vector N (a, b, c), a, b, c are not 0 simultaneously；
If the aperture edge for acquiring large aperture telescope primary mirror cell centre bore does C1, C2 ... Cn each point coordinate, note
For Ci (xi, yi, zi), Ci is projected on the datum level R and obtains center of circle O1 coordinate (x0, y0, z0)；
Choose any point M2 on the datum level R, x-axis be denoted as with O2M2 line, on the datum level R perpendicular to
The line of O2N2 is denoted as y-axis, establishes the two-dimensional coordinate system of the large aperture telescope primary mirror cell.
In some preferred embodiments, it is tied by two corresponding primary mirror support pads and primary mirror cell support
The connection of structure compares, position differ by more than the flexible link can deviation range then to primary mirror cell's support construction carry out
In the step of adjustment, include the following steps:
The corresponding primary mirror support is padded into A1, A2 ... the position coordinates (ai, di, mi) of An and the primary mirror cell support
The position coordinates (bi, si, ti) of structure B1, B2 ... Bn carry out position and seek difference i.e. When position differ by more than the flexible link can deviation range, then
Primary mirror cell's support construction is adjusted.
The present invention by adopting the above technical scheme the advantages of be:
Large aperture telescope primary mirror cell assembly method provided by the invention based on laser tracker, utilizes laser tracker
Establish the large aperture telescope primary mirror two-dimensional coordinate system；According to the large aperture telescope primary mirror two-dimensional coordinate system to the master
The position of mirror supporting pad is positioned；Large aperture telescope primary mirror cell two-dimensional coordinate system is established using laser tracker；Root
It is positioned according to position of the large aperture telescope primary mirror cell two-dimensional coordinate system to primary mirror cell's support construction；It will be corresponding
The primary mirror support pad and the connection of primary mirror cell's support construction compare, position differs by more than the flexible link can be inclined
Poor range is then adjusted primary mirror cell's support construction, and the heavy caliber provided by the invention based on laser tracker is looked in the distance
Mirror primary mirror cell assembly method, has abandoned the step of specific tooling is processed in conventional method, positions heavy caliber using laser tracker
The installation site of telescope primary mirror support pad and large aperture telescope primary mirror cell support construction, reduces costs and avoids waste,
And effectively increase positioning accuracy.
In addition, the large aperture telescope primary mirror cell assembly method provided by the invention based on laser tracker, laser tracking
Instrument can also feed back the bonding and large aperture telescope primary mirror of large aperture telescope primary mirror support pad while positioning each position
The position of room support construction understands the deviation of each actual position and ideal position, checks convenient for the later period.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structural schematic diagram of primary mirror support pad provided by the invention and primary mirror cell's support construction
Fig. 2 is that the back support of the large aperture telescope primary mirror provided in an embodiment of the present invention pads distribution map.
Fig. 3 is the back support structure distribution figure of the large aperture telescope primary mirror cell provided in an embodiment of the present invention.
Fig. 4 is the step of the large aperture telescope primary mirror cell assembly method provided in an embodiment of the present invention based on laser tracker
Rapid flow chart.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, for the present invention provides a kind of assembly side, large aperture telescope primary mirror cell based on laser tracker
Primary mirror support pad and the structural schematic diagram of primary mirror cell's support construction involved in method, wherein the large aperture telescope primary mirror cell
It is inside provided with large aperture telescope primary mirror, the back side of the large aperture telescope primary mirror cell is connected with several primary mirror cells support knot
Structure 110, the back side of the large aperture telescope primary mirror are provided with several primary mirror support pads 120, a mutual primary mirror
Supporting pad and primary mirror cell's support construction 110 are connected by a flexible link 130.
Referring to Fig. 2, the back support pad distribution of the large aperture telescope primary mirror provided for one embodiment of the invention
Scheme, primary mirror support pad 120 is distributed in the back side of the large aperture telescope primary mirror in Fig. 2, can be with the large aperture telescope master
Mirror is pasted.
Referring to Fig. 3, the back support structure of the large aperture telescope primary mirror cell provided for one embodiment of the invention
Distribution map, the primary mirror cell Tu2Zhong support construction 110 are distributed in the back side of the large aperture telescope primary mirror cell, the primary mirror support
Pad 120 and primary mirror cell's support construction 110 are connected by a flexible link.
Large aperture telescope primary mirror cell assembly method provided by the invention based on laser tracker described further below
Flow chart of steps.
Referring to Fig. 4, for the large aperture telescope primary mirror cell assembly provided in an embodiment of the present invention based on laser tracker
The step flow chart of method, includes the following steps:
Step S110: the large aperture telescope primary mirror two-dimensional coordinate system is established using laser tracker；
In some preferably embodiments, the large aperture telescope primary mirror two-dimensional coordinate is established using laser tracker
System, specifically include the following steps:
Step S111: several described primary mirror support pads are numbered one by one, are denoted as supporting pad A1 respectively, A2 ... An please join
Read Fig. 3.
Step S112: using the laser tracker as reference, using the back side of the large aperture telescope primary mirror as benchmark
Face P, if detecting the P1 that does of the datum level P using target ball, the coordinate of P2 ... Pn is denoted as Pi (xi, yi, zi), to obtain
The datum level P equation ax+by+cz+d=0 and normal vector N (a, b, c), a, b, c are not 0 simultaneously；
Step S113: if the aperture edge for acquiring the large aperture telescope primary mirror centre bore does C1, C2 ... Cn each point
Coordinate is denoted as Ci (xi, yi, zi), and Ci is projected to and optimizes to obtain center of circle O1 coordinate using least square method on the benchmark P
(x0, y0, z0)；
Step S114: choosing any point M1 on the datum level P, is denoted as x-axis with O1M1 line, in the datum level P
On perpendicular to the line of O1N1 be denoted as y-axis, establish the large aperture telescope primary mirror two-dimensional coordinate system.
It is appreciated that since large aperture telescope primary mirror is, selection institute centrosymmetric for center of circle O1 on datum level P
Any point M1 on datum level P is stated, x-axis is denoted as with O1M1 line, the line on the datum level P perpendicular to O1N1 is denoted as y
Axis establishes the large aperture telescope primary mirror two-dimensional coordinate system.
Step S120: it is carried out according to position of the large aperture telescope primary mirror two-dimensional coordinate system to the primary mirror support pad
Positioning；
It is appreciated that due to establishing the large aperture telescope primary mirror two-dimensional coordinate system, it can be according to the primary mirror support pad
It is positioned in the position of the large aperture telescope primary mirror two-dimensional coordinate system, and according to positioning result to each primary mirror support pad
It is adjusted bonding.
Step S130: large aperture telescope primary mirror cell two-dimensional coordinate system is established using laser tracker；
In some preferred embodiments, large aperture telescope primary mirror cell two dimension seat is being established using laser tracker
In the step of mark system, include the following steps:
Step S131: several described axial support structures are numbered one by one, are denoted as B1, B2 ... Bn respectively；
Step S132: using the laser tracker as reference, using the back side of the large aperture telescope primary mirror cell as base
Quasi- face R, if detecting the R1 that does of the datum level R using target ball, the coordinate of R2 ... Rn is denoted as Ri (xi, yi, zi), to obtain
The datum level R equation ax+by+cz+d=0 and normal vector N (a, b, c), a, b are taken, c is not 0 simultaneously；
Step S133: if the aperture edge for acquiring large aperture telescope primary mirror cell centre bore does C1, C2 ... Cn is each
Point coordinate, is denoted as Ci (xi, yi, zi), and Ci is projected to and optimizes to obtain center of circle O1 seat using least square method on the datum level R
It marks (x0, y0, z0)；
Step S134: choosing any point M2 on the datum level R, is denoted as x-axis with O2M2 line, in the datum level R
On perpendicular to the line of O2N2 be denoted as y-axis, establish the two-dimensional coordinate system of the large aperture telescope primary mirror cell.
Step S140: according to large aperture telescope primary mirror cell two-dimensional coordinate system to the position of primary mirror cell's support construction
It sets and is positioned；
It is appreciated that due to establishing large aperture telescope primary mirror cell two-dimensional coordinate system, it can be according to primary mirror cell's branch
Support structure is positioned in the position of large aperture telescope primary mirror cell two-dimensional coordinate system, and according to positioning result to each master
Mirror cell's support construction is adjusted.
Step S150: the corresponding primary mirror support pad and the connection of primary mirror cell's support construction are compared,
Position differ by more than the flexible link can deviation range then primary mirror cell's support construction is adjusted.
In some preferred embodiments, it is tied by two corresponding primary mirror support pads and primary mirror cell support
The connection of structure compares, position differ by more than the flexible link can deviation range then to primary mirror cell's support construction carry out
In the step of adjustment, include the following steps:
The corresponding primary mirror support is padded into A1, A2 ... the position coordinates (ai, di, mi) of An and the primary mirror cell support
The position coordinates (bi, si, ti) of structure B1, B2 ... Bn carry out position and seek difference i.e. When position differ by more than the flexible link can deviation range, then
Primary mirror cell's support construction is adjusted.
Large aperture telescope primary mirror cell assembly method provided by the invention based on laser tracker, utilizes laser tracker
Establish the large aperture telescope primary mirror two-dimensional coordinate system；According to the large aperture telescope primary mirror two-dimensional coordinate system to the master
The position of mirror supporting pad is positioned；Large aperture telescope primary mirror cell two-dimensional coordinate system is established using laser tracker；Root
It is positioned according to position of the large aperture telescope primary mirror cell two-dimensional coordinate system to primary mirror cell's support construction；It will be corresponding
The primary mirror support pad and the connection of primary mirror cell's support construction compare, position differs by more than the flexible link can be inclined
Poor range is then adjusted primary mirror cell's support construction, and the heavy caliber provided by the invention based on laser tracker is looked in the distance
Mirror primary mirror cell assembly method, has abandoned the step of specific tooling is processed in conventional method, positions heavy caliber using laser tracker
The installation site of telescope primary mirror support pad and large aperture telescope primary mirror cell support construction, reduces costs and avoids waste,
And effectively increase positioning accuracy.
In addition, the large aperture telescope primary mirror cell assembly method provided by the invention based on laser tracker, laser tracking
Instrument can also feed back the bonding and large aperture telescope primary mirror of large aperture telescope primary mirror support pad while positioning each position
The position of room support construction understands the deviation of each actual position and ideal position, checks convenient for the later period.
Certain large aperture telescope primary mirror cell assembly method of the invention based on laser tracker can also have a variety of changes
It changes and retrofits, it is not limited to the specific structure of above embodiment.In short, protection scope of the present invention should include those for
It obviously converts or substitutes and retrofit for those of ordinary skill in the art.
Claims (4)
1. a kind of large aperture telescope primary mirror cell assembly method based on laser tracker, in the large aperture telescope primary mirror cell
It is provided with large aperture telescope primary mirror, the back side of the large aperture telescope primary mirror cell is connected with several primary mirror cells support knot
Structure, the back side of the large aperture telescope primary mirror are provided with several primary mirror support pads, a mutual primary mirror support pad
And primary mirror cell's support construction is connected by a flexible link, which is characterized in that is included the following steps:
The large aperture telescope primary mirror two-dimensional coordinate system is established using laser tracker；
It is positioned according to position of the large aperture telescope primary mirror two-dimensional coordinate system to the primary mirror support pad；
Large aperture telescope primary mirror cell two-dimensional coordinate system is established using laser tracker；
It is positioned according to position of the large aperture telescope primary mirror cell two-dimensional coordinate system to primary mirror cell's support construction；
The corresponding primary mirror support pad and the connection of primary mirror cell's support construction are compared, position differs by more than institute
State flexible link can deviation range then primary mirror cell's support construction is adjusted.
2. the large aperture telescope primary mirror cell assembly method based on laser tracker as described in claim 1, which is characterized in that
In the step of establishing the large aperture telescope primary mirror two-dimensional coordinate system using laser tracker, include the following steps:
Several described primary mirror support pads are numbered one by one, are denoted as supporting pad A1, A2 ... An respectively；
Using the laser tracker as reference, using the back side of the large aperture telescope primary mirror as datum level P, target ball is utilized
If detecting the P1 that does of the datum level P, the coordinate of P2 ... Pn is denoted as Pi (xi, yi, zi), to obtain the datum level P equation
Ax+by+cz+d=0 and normal vector N (a, b, c), a, b, c are not 0 simultaneously；
If the aperture edge for acquiring the large aperture telescope primary mirror centre bore does C1, C2 ... Cn each point coordinate is denoted as Ci
Ci is projected to and is optimized to obtain center of circle O1 coordinate (x0, y0, z0) using least square method on the benchmark P by (xi, yi, zi)；
Any point M1 on the datum level P is chosen, x-axis is denoted as with O1M1 line, perpendicular to O1N1's on the datum level P
Line is denoted as y-axis, establishes the large aperture telescope primary mirror two-dimensional coordinate system.
3. the large aperture telescope primary mirror cell assembly method based on laser tracker as claimed in claim 2, which is characterized in that
In the step of establishing the large aperture telescope primary mirror cell two-dimensional coordinate system using laser tracker, include the following steps:
Several described axial support structures are numbered one by one, are denoted as B1, B2 ... Bn respectively；
Using the laser tracker as reference, using the back side of the large aperture telescope primary mirror cell as datum level R, target is utilized
If ball detects the R1 that does of the datum level R, the coordinate of R2 ... Rn is denoted as Ri (xi, yi, zi), to obtain the datum level side R
Journey ax+by+cz+d=0 and normal vector N (a, b, c), a, b, c are not 0 simultaneously；
If the aperture edge for acquiring large aperture telescope primary mirror cell centre bore does C1, C2 ... Cn each point coordinate is denoted as Ci
Ci is projected to and is optimized to obtain center of circle O1 coordinate (x0, y0, z0) using least square method on the datum level R by (xi, yi, zi)；
Any point M2 on the datum level R is chosen, x-axis is denoted as with O2M2 line, perpendicular to O2N2's on the datum level R
Line is denoted as y-axis, establishes the two-dimensional coordinate system of the large aperture telescope primary mirror cell.
4. the large aperture telescope primary mirror cell assembly method based on laser tracker as claimed in claim 3, which is characterized in that
It is compared by two corresponding primary mirror support pads and the connection of primary mirror cell's support construction, position differs by more than
The flexible link can deviation range the step of being then adjusted to primary mirror cell's support construction in, include the following steps:
The corresponding primary mirror support is padded into A1, A2 ... the position coordinates (ai, di, mi) of An and primary mirror cell's support construction
The position coordinates (bi, si, ti) of B1, B2 ... Bn carry out position and seek difference i.e. When position differ by more than the flexible link can deviation range, then
Primary mirror cell's support construction is adjusted.
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| CN201811541725.6A CN109656013B (en) | 2018-12-17 | 2018-12-17 | Large-aperture telescope primary mirror chamber assembly method based on laser tracker |
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| CN201811541725.6A CN109656013B (en) | 2018-12-17 | 2018-12-17 | Large-aperture telescope primary mirror chamber assembly method based on laser tracker |
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| CN110109242A (en) * | 2019-05-08 | 2019-08-09 | 中国科学院国家天文台南京天文光学技术研究所 | Hydraulic trussing for primary mirror of astronomical telescope |
| CN111399210A (en) * | 2020-04-22 | 2020-07-10 | 中国科学院长春光学精密机械与物理研究所 | Coarse alignment method, device, equipment and storage medium for large-caliber large-field telescope |
| CN111644822A (en) * | 2020-07-02 | 2020-09-11 | 德阳市瑞祥机械厂 | Method for processing box body of primary mirror chamber of 4m telescope |
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