CN114355553A - Large-caliber light-weight reflector assembly, assembly and adjustment detection assembly and adjustment detection method - Google Patents
Large-caliber light-weight reflector assembly, assembly and adjustment detection assembly and adjustment detection method Download PDFInfo
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Abstract
The invention provides a large-caliber light-weight reflector component, an assembly detection component and an assembly detection method, and belongs to the technical field of astronomical observation optoelectronic equipment.
Description
Technical Field
The invention belongs to the technical field of astronomical observation optoelectronic equipment, and particularly relates to a large-caliber light-weight reflector component, a debugging detection component and a debugging detection method.
Background
To avoid the effects of the earth's atmosphere on astronomical observations, telescopes have evolved from ground to space. Compared with a ground-based telescope, the space telescope has wider observable wave band range and higher resolution.
According to the calculation method of the diffraction limit angle resolution of the optical system, the imaging quality of the optical system is further improved, an optical reflector with a larger aperture is required, and the increase of the aperture of the spatial reflector brings a larger problem to the structural design of the reflector. Meanwhile, as the space reflector is manufactured, assembled, adjusted and detected in the ground environment and operates in the microgravity space environment, the inconsistency of the space environment also puts higher requirements on the design of the space reflector.
The large-aperture space reflector can ensure that the mirror surface has high surface shape precision under various complex environments (including variable gravity, temperature, vibration influence in the emission process and the like) and ensure the imaging quality of an optical system; meanwhile, the reflector also needs to reduce the weight of the structure as much as possible and reduce the cost of the emission process.
Therefore, the light weight structure of the space reflector is reasonably designed, so that the reflector has the characteristics of light weight and high rigidity, the flexible supporting structure of the reflecting environment is optimized, the reflector has stable and reliable support, and the surface shape precision and stability of the mirror surface of the reflector can be improved while the weight of the space reflector is effectively reduced.
CN202010387133.4 provides a patent entitled "a surface shape high stability reflector and its assembling method", which adopts the matching way of flexible connecting joint and central supporting cylinder cone to cone, and simultaneously utilizes the structure of multiple flexible connecting arms and annular chassis to reduce the generated temperature change stress; the method adopts a six-claw flexible structure design, and 6 flexible connecting arms are uniformly arranged on the outer edge of the annular chassis along the circumferential direction. Although the problem that the assembly and debugging of the reflector are difficult and the surface type of the reflector is easy to change is effectively solved, the assembly period is long and the assembly process is relatively complex.
Besides, the stability of the existing large-caliber light-weight reflector in the assembling process is poor, and the assembled light-weight reflector is poor in precision and low in surface shape stability.
Disclosure of Invention
The invention provides a large-caliber light-weight reflector component, an assembly detection component and an assembly detection method, aiming at solving the stability problem in the assembly process of a large-caliber light-weight reflector and enabling the assembled light-weight reflector to have a high-precision and high-stability surface shape.
The specific technical solution of the invention is as follows:
this heavy-calibre lightweight mirror assembly includes: the reflecting mirror is used for supporting a mirror seat and a mirror chamber of the reflecting mirror; the reflector is embedded in the mirror base, and the mirror chamber and the mirror base are in a concentric circle structure; the flexible support is uniformly distributed in a gap between the outer side wall of the mirror base and the mirror chamber and is used for fixing the mirror base in the mirror chamber; the outer side wall of the microscope base is provided with high-precision mounting planes with the same number as the feet of the double-foot flexible supports, and the soles of the double-foot flexible supports are in contact with the high-precision mounting planes.
Further, the double-foot flexible support comprises a base, two support legs and two contact plates; one end of each of the two support legs is arranged on the base, the other end of each of the two support legs is connected with a contact plate, and the included angle theta between the two support legs is 115-150 degrees; the contact surface of the contact plate is attached to a high-precision mounting plane on the outer side wall of the microscope base, and the base is in contact with the microscope chamber; the supporting legs comprise three sections, namely a base connecting section, a central section and a contact plate connecting section, wherein flexible connecting short sections are arranged at the connecting positions of the central section, the base connecting section and the contact plate connecting section; the flexible short sections comprise a first flexible short section, a first short section, a second flexible short section, a central flexible short section, a third flexible short section, a second short section and a fourth flexible short section which are sequentially connected, wherein the first flexible short section and the fourth flexible short section are the same, and the second flexible short section and the third flexible short section are the same; the width of the first flexible short section and the width of the fourth flexible short section are the same as the width of the central flexible short section, the thickness of the second flexible short section and the thickness of the third flexible short section are the same as the thickness of the central flexible short section, the width of the first flexible short section is 5 times or more of the width of the second flexible short section, and the thickness of the second flexible short section is 5 times or more of the thickness of the first flexible short section; the width and the thickness of the first short section and the second short section are the same as those of the central flexible short section; the length of the central short section is a first short section,The flexible nipple joint of first flexible nipple joint, second is 2 ~ 3 times. Wherein the thickness of the flexible connecting short section is t1And t2Length of lf1-lf4The thickness of the central section is wfLength according to lfThe optimization result is variable; wherein the flexible support of both feet is good with six circumference equipartitions, can introduce in the installation and repair the cutting pad and carry out position adjustment.
Furthermore, the mirror base is of a flat-back cylindrical structure, the back of the mirror base comprises a central inner circle, a plurality of continuous triangular meshes are arranged between the outer wall of the inner circle and the outer circle of the side wall of the mirror base, inner ring supporting holes and outer ring supporting holes for detecting loading and unloading are arranged at the intersection points of part of the meshes, the inner ring supporting holes are located at the positions 0.25-0.35 times of the radius of the reflector, and the outer ring supporting holes are located at the positions 0.8-0.85 times of the radius of the reflector; let tiIs the thickness of the inner circle wall trIs the wall thickness of a triangular mesh, rlIs the diameter of an inscribed circle of a triangular mesh, toIs the wall thickness of the side wall of the lens base, thThe height of the side wall of the mirror base is D, the diameter of the excircle of the reflector is D, and the thickness and r of the optical reflecting surface are satisfiedlThe ratio of the components is more than or equal to 1: 10; t is th＝1/10D，ti＝to＝2trAnd tr is more than or equal to 2.5 mm. Generally, there are three inner ring support holes and twelve outer ring support holes.
Further, still be provided with anti-toppling device on the microscope base lateral wall between the two feet of at least one both feet flexible support, anti-toppling device includes the bracing piece, the bracing piece tip is provided with the holding surface, and the holding surface is close to reflector mirror surface one side and is provided with soft touch panel, still is provided with the adjusting nut who is used for adjusting distance on the bracing piece. The anti-toppling device is not in contact with the reflector, and only has the function of protection when the reflector is toppled after degumming.
Further, the mirror chamber is a carbon fiber mirror chamber, a metal insert for providing a high-precision mechanical interface is arranged at a position corresponding to the contact position of the mirror chamber and the two-leg flexible support base, and the metal insert is preferably a cylindrical invar insert.
An assembly detection assembly of a large-caliber light-weight reflector assembly comprises:
the device comprises a base, an assembly and adjustment support frame arranged on the base and a detection support frame connected with the assembly and adjustment support frame;
the assembling and adjusting support frame comprises a bottom plate, connecting seats are arranged at two ends of the bottom plate, and flange connecting pieces are arranged on the connecting seats; the center of the bottom plate is provided with a positioner used for positioning the detection support frame or the mirror chamber;
the detection support frame comprises a main frame, connecting flanges matched with flange connecting pieces on the connecting seats are arranged on two sides of the main frame, a bearing hanging strip is arranged at the top of the main frame, and a back frame used for connecting the back of the microscope base is arranged at the back of the main frame;
the back frame is provided with an auxiliary gravity unloading device which comprises an 18-ball head, a 19-lever and a 20-heavy hammer matched with the lens base supporting hole.
Further, the auxiliary gravity unloading device is of a floating anti-gravity hammer structure. The structure supports the mirror body in the mirror fine polishing detection process, and can effectively reduce the neutral deformation of the mirror.
A method for adjusting and detecting a large-caliber light-weight reflector comprises the following steps:
1, placing the reflector and the mirror seat on a detection support frame for surface shape detection, dismantling the detection support frame after the surface shape detection is finished, and taking down the detection support frame to form the reflector and the mirror seat;
2, mounting the mirror chamber on the adjusting support frame, enabling the optical axis corresponding to the mirror chamber to be vertically upward, and then placing the reflector at the position corresponding to the position of the mirror chamber to ensure the size requirement between the reflector and the mirror chamber;
connecting the two-leg flexible support to the lens chamber, enabling the two-leg flexible support to be located between the lens chamber and the side wall of the lens base, simultaneously ensuring the gluing gap between the two-leg flexible support and the metal insert in the lens chamber, after the two-leg flexible support and the metal insert are adjusted in place, injecting epoxy structural adhesive into the matching gap for curing, and ensuring the temperature in the curing process of the structural adhesive so as to reduce the curing shrinkage stress;
and 4, installing an anti-toppling device after solidification is finished, finally overturning the reflector component, and detecting the surface shape under the condition that the optical axis is horizontal, so that the reflector surface shape error is ensured to be within the optical design requirement range, and the assembly of the reflector component is finished.
Further, the step 1 of placing the reflector and the mirror seat on the detection support frame for connection specifically includes: the reflector and the mirror base are lifted by a hanging strip of the detection support frame, the mirror base is connected to a back frame of the main frame to be adjusted in position, and surface shape detection is carried out after adjustment is completed.
Further, the step 2 of installing the mirror chamber on the adjusting support frame specifically comprises: connecting the mirror chamber with a connecting flange of a support frame, and ensuring the size between the reflector and the mirror chamber through a precisely processed flexible nylon cushion block;
further, the step 4 specifically includes: after curing is finished, the support rod of the anti-toppling device penetrates out of a hole reserved at the back of the carbon fiber mirror chamber, the support surface of the anti-toppling device is arranged at the front end of the support rod, and the anti-toppling device is used for adjusting the mounting nut to ensure that the soft contact panel is in contact with the large-caliber light-weight reflector; and finally, turning over the reflector assembly, and detecting the surface shape under the condition that the optical axis is horizontal, so that the reflector surface shape error is ensured to be within the optical design requirement range, and the assembly of the reflector assembly is completed.
The invention has the advantages that:
the large-caliber light-weight reflector component, the assembly and adjustment detection component and the assembly and adjustment detection method provided by the invention have the advantages of good surface shape precision in the horizontal state of the optical axis, the environment of ground gravity and large temperature difference, simple processing and adjustment process, good surface shape stability and high safety coefficient.
The invention provides a parameterization-design-based heavy-caliber space reflector lightweight and flexible support structure, which can meet the surface shape accuracy under the ground gravity environment and the large temperature change environment and can obtain higher lightweight rate.
The large-caliber light-weight reflector component provided by the invention is particularly suitable for reflectors with calibers smaller than 1500mm, the reflector base can adopt a carbon fiber material thin-wall integrated molding structure, and meanwhile, a high-precision mechanical interface can be provided in a manner of embedding a metal insert.
Drawings
FIG. 1 is a schematic structural view of a large-caliber light-weight reflector assembly;
FIG. 2 is a schematic diagram of parameters for optimizing a lightweight structure of a large-aperture reflector;
FIG. 3 is a schematic view of a gravity unloading point at the back of the reflector;
FIG. 4 is a schematic view of the anti-toppling device;
FIG. 5 is a schematic view of a dual-purpose mounting and adjusting detection support;
FIG. 6 is a schematic view of a gravity unloading apparatus;
FIG. 7 is a schematic diagram of the optimized parameters of a flexible support bipod structure;
fig. 8 shows the finite element analysis result of the mirror surface deformation of the large-aperture reflector.
Wherein the reference numerals are: 1-large-caliber light-weight reflector, 2-double-foot flexible support, 3-mirror chamber, 4-support frame connecting flange, 5-anti-toppling device, 6-metal insert, 7-surface-shaped detection auxiliary unloading support hole, 8-high-precision mounting plane, 9-anti-toppling device support rod, 10-anti-toppling device support surface, 11-soft contact panel, 12-anti-toppling device adjusting and mounting nut, 13-hanging strip, 14-auxiliary gravity unloading device, 15-connecting flange, 16-detection support frame, 17-adjusting support frame, 18-ball head, 19-lever and 20-heavy hammer.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application more clearly apparent, the present application is further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the present invention, "at least one" means one or more, "a plurality" means two or more. "at least one item" or similar expressions refer to any combination of these items, including any combination of the single item(s) or the plural items. For example, "at least one (one) of a, b, or c," or "at least one (one) of a, b, and c," may each represent: a, b, c, a-b (i.e., a and b), a-c, b-c, or a-b-c, wherein a, b, and c may be single or plural, respectively.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The invention is described in detail below with reference to specific embodiments, as shown in fig. 1 to 8:
the light-weight reflector provided by the invention is preferably made of silicon carbide materials, has a flat-back cylindrical structure, the side wall of the reflector base is preferably processed into 12 high-precision planes which are supported and installed at intervals of 30 degrees, and the back of the reflector base is of an open light-weight hole structure. Carbon fiber materials are preferably selected for the mirror chamber, the thin-wall integrated design forming design is adopted, and the mirror chamber double-foot flexible support and other optical machine part interfaces are matched in a high-precision matching mode through embedding invar inserts with the same thermal expansion coefficient as the carbon fiber and fine machining.
In the parameter design of the embodiment, firstly, a light-weight initial structure of the reflector is designed by an empirical formula method, then 12 support surfaces are restrained, the ratio of the thickness of the optical reflection surface to the diameter of a light-weight hole circumcircle is more than or equal to 1:10 so as to reduce the mirror surface deformation during processing, the shape error RMS value under the condition that the optical axis is horizontal to 1g gravity and the optical surface deformation RMS value under the condition that the temperature is changed at +/-5 ℃ are taken as design targets, the process limitation of the flexible structure and the size limitation in a mirror chamber are taken as constraints, the optimal surface shape solution is obtained by optimally designing the flexible support parameters of the two feet by adopting a genetic algorithm, and the optimal structure design parameters of the flexible support of the two feet are obtained. Two flexible joints at the front end of the double-foot flexible support are bonded with the high-precision processing plane of the reflector. The back is connected with the metal insert screw hole on the mirror chamber through a screw to ensure the matching adhesive gap between the support and the reflector through the trimming pad.
After the curvature radius and the clear aperture of the reflector surface of the large-caliber light-weight reflector 1 are determined, 12 high-precision mounting planes 8 are fixed, light-weight parameters such as tf, ti, tr, to, th and rl are optimized by taking the optical axis level, the reflector surface shape precision RMS value under the condition of 1g gravity load as an objective function and the volume percentage and the processing process safety value of the reflector as constraints to obtain the light-weight parameters corresponding to the minimum volume percentage, then a reflector model of the large-caliber light-weight reflector 1, the flexible bipod support 2 and the carbon fiber mirror chamber 3 is established, a connecting flange 4 of a mirror assembly and adjustment detection frame is fixed, the reflector surface shape precision RMS value under the conditions of the optical axis level, the 1g gravity load and the 5 ℃ temperature difference load is taken as the objective function, the processing process and the dynamic safety value of the flexible bipod support 2 are taken as constraints to carry out t1, t2, Lf, Wf and Wf, And (4) optimizing the structural parameters such as theta and the like to obtain the parameters of the bipod supporting structure corresponding to the optimal surface shape.
And tf is the thickness of the reflecting surface, ti is the thickness of an inner circle, tr is the thickness of a light-weight hole reinforcing rib, to is the thickness of an outer circle, th is the height of the outer circle of the reflector, and rl is the diameter of a light-weight hole inner node circle. t1 and t2 are the flexible joint thickness of the flexible support bipod, Lf is the flexible joint length, Wf is the flexible joint width, theta is the bipod angle, W is the bipod width, and W is a fixed value due to the size limitation of the reflector. The height H of the bipod changes with the value of theta.
Before the assembly of the reflector component, the sling 13, the auxiliary gravity unloading device 14 and the connecting support on the detection supporting frame 16 are detached to form an assembly and adjustment supporting frame 17, when the reflector component is assembled, the carbon fiber mirror chamber 3 and the supporting frame connecting flange 4 are firstly installed together and then connected with the connecting flange 15, and the size between the reflector and the mirror chamber is ensured through three precisely processed flexible nylon cushion blocks; then connecting 6 flexible bipod supports 2 to a carbon fiber mirror chamber 3, ensuring the gluing gap between the flexible supports and the cylindrical invar steel insert by using a feeler gauge, trimming the size of the gasket after adjusting in place, injecting epoxy structural adhesive into the matching gap, and ensuring the temperature in the curing process of the structural adhesive so as to reduce the curing shrinkage stress; after the solidification is finished, the supporting rod of the anti-dumping device 9 penetrates out of a hole reserved behind the carbon fiber mirror chamber 3, the supporting surface 10 of the anti-dumping device is installed at the front end, and the anti-dumping device is used for adjusting the installation screw 12 to ensure that the soft contact panel 11 is in contact with the large-caliber light-weight reflector 1. And finally, turning over the reflector assembly, and detecting the surface shape under the condition that the optical axis is horizontal, so that the reflector surface shape error is ensured to be within the optical design requirement range, and the assembly of the reflector assembly is completed.
The large-caliber light-weight reflecting mirror is made of silicon carbide materials, the curvature radius of the mirror surface is 4300mm, the clear aperture is 1400mm, the light-weight parameters are optimized by using simulation software under the conditions that the optical axis is horizontal, the shape accuracy RMS value of the reflecting mirror surface under the condition of 1g gravity load is less than or equal to 5nm as an objective function, and the mass is less than 150kg as a constraint, wherein tf is 6mm, ti is 6mm, tr is 4.5mm, to is 8mm, th is 145mm and rl is 68mm after the optimization is completed. The mirror mass was 145kg and the surface shape error RMS value was 5.4 nm. The flexible bipod support is made of a titanium alloy material, the support parameters are optimized by simulation software by taking the reflective mirror surface shape accuracy RMS value of less than 10nm under the conditions of 1g gravity load and 5 ℃ temperature difference load as an objective function, tb is 2.4mm, Lf is 8mm, Wf is 15mm, theta is 135 degrees and the mirror surface deformation RMS value is 9.8nm after the optimization is completed.
And in the rough polishing stage of the reflector, surface shape detection is carried out by using machine tool turning and hanging strip support, and after the fine polishing stage, surface shape detection is carried out by using a dual-purpose gravity unloading device with a hanging strip as a main part and a 12-point floating gravity unloading support as an auxiliary part, so that the surface shape detection precision in the processing stage is superior to the optical design requirement. After the optical surface shape of the reflector is polished to an RMS value of less than 1/10 wavelength (the wavelength is 632.8nm), an auxiliary unloading support 14 is arranged in the auxiliary unloading support hole 7 for surface shape detection by utilizing a hanging strip 13 on a detection support frame 16, and the surface shape error under the action of gravity is ensured to be superior to the RMS value 1/100 wavelength. The carbon fiber mirror chamber 3 is fitted with a metal insert 6 before pressure curing.
After the optical surface shape of the reflecting mirror is polished to an RMS value smaller than 1/10 wavelength (the wavelength is 632.8nm), the surface shape detection is carried out by utilizing the hanging strip 13 and the auxiliary unloading support 14 on the dual-purpose adjusting detection support frame, the support counter force on the 7-surface shape detection auxiliary unloading support hole is respectively A (100.5N), B (80N), C (37N), D (106.5N), E (95N), F (60N), G (16.5N), the surface shape error analysis under the action of horizontal gravity of an optical axis is better than that of the RMS value of 2nm, and the RMS value of the bare surface shape error after polishing and plating is better than 10 nm.
During assembly, the optical axis of the reflector is vertically upward, the carbon fiber mirror chamber 3 and the dual-purpose mounting and adjusting detection support frame 4 are firstly mounted and adjusted and detection frame connecting flange together, then are connected with the carbon fiber mirror chamber connecting flange 15 and are mounted on the mounting and adjusting support frame 17. Three precisely processed flexible nylon cushion blocks ensure that the dimensional error between the reflector and the mirror chamber is better than 0.1mm, a flexible bipod 2 is installed on a carbon fiber mirror chamber 3, a feeler gauge ensures that the gluing clearance between a flexible support and a cylindrical invar insert is 0.1mm-0.15mm, after the adjustment is in place, the size of a gasket is trimmed, epoxy structural adhesive is injected into a matching clearance, and the temperature in the curing process of the structural adhesive is ensured to be 18 ℃ to 20 ℃ so as to reduce the curing shrinkage stress; and installing an anti-toppling device after curing is finished. And finally, turning over the reflector component, and carrying out surface shape detection under the condition that the optical axis is horizontal, so as to ensure that the RMS value of the surface shape error of the reflector is superior to 15 nm.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (9)
1. A large-caliber light-weight reflector component comprises a reflector, a reflector seat and a reflector chamber, wherein the reflector seat is used for supporting the reflector; the method is characterized in that: the reflector is embedded in the mirror base, and the mirror chamber and the mirror base are in a concentric circle structure; the flexible support is uniformly distributed in a gap between the outer side wall of the mirror base and the mirror chamber and is used for fixing the mirror base in the mirror chamber; the outer side wall of the microscope base is provided with high-precision mounting planes with the same number as the feet of the double-foot flexible supports, and the soles of the double-foot flexible supports are in contact with the high-precision mounting planes.
2. A large aperture lightweight mirror assembly according to claim 1, wherein: the double-foot flexible support comprises a base, two support legs and two contact plates; one end of each of the two support legs is arranged on the base, the other end of each of the two support legs is connected with a contact plate, and the included angle theta between the two support legs is 115-150 degrees; the contact surface of the contact plate is attached to a high-precision mounting plane on the outer side wall of the microscope base, and the base is in contact with the microscope chamber; the supporting legs comprise three sections, namely a base connecting section, a middle section and a contact plate connecting section, wherein flexible connecting short sections are arranged at the joints of the middle section, the base connecting section and the contact plate connecting section; the flexible short sections comprise a first flexible short section, a first short section, a second flexible short section, a central flexible short section, a third flexible short section, a second short section and a fourth flexible short section which are sequentially connected, wherein the first flexible short section and the fourth flexible short section are the same, and the second flexible short section and the third flexible short section are the same; the width of the first flexible short section and the width of the fourth flexible short section are the same as the width of the central flexible short section, the thickness of the second flexible short section and the thickness of the third flexible short section are the same as the thickness of the central flexible short section, the width of the first flexible short section is 5 times or more of the width of the second flexible short section, and the thickness of the second flexible short section is 5 times or more of the thickness of the first flexible short section; the width and the thickness of the first short section and the second short section are the same as those of the central flexible short section; the length of center nipple joint is 2 ~ 3 times of first nipple joint, first flexible nipple joint, the flexible nipple joint of second.
3. A large aperture lightweight mirror assembly according to claim 2, wherein: the mirror base is of a flat-back cylindrical structure, the back of the mirror base comprises a central inner circle, a plurality of continuous triangular meshes are arranged between the outer wall of the inner circle and the outer circle of the side wall of the mirror base, and an inner ring supporting hole and an outer ring supporting hole for detecting loading and unloading are arranged at the intersection of part of the meshes, the inner ring supporting hole is positioned at a position 0.25-0.35 times of the radius of the reflector, and the outer ring supporting hole is positioned at a position 0.8-0.85 times of the radius of the reflector; let tiIs the thickness of the inner circle wall trIs the wall thickness of a triangular mesh, rlIs the diameter of an inscribed circle of a triangular mesh, toIs the wall thickness of the side wall of the lens base, thThe height of the side wall of the mirror base is D, the diameter of the excircle of the reflector is D, and the thickness and r of the optical reflecting surface are satisfiedlThe ratio of the components is more than or equal to 1: 10; t is th＝1/10D，ti＝to＝2tr，tr≥2.5mm。
4. A large aperture lightweight mirror assembly according to claim 3, wherein: still be provided with anti-toppling device on the microscope base lateral wall between the two feet of at least one both feet flexible support, anti-toppling device includes the bracing piece, the bracing piece tip is provided with the holding surface, and the holding surface is close to reflector mirror surface one side and is provided with soft contact panel, still is provided with the adjusting nut who is used for adjusting distance on the bracing piece.
5. The large aperture lightweight mirror assembly of claim 4, wherein: the mirror chamber is a carbon fiber mirror chamber, and a metal insert used for providing a high-precision mechanical interface is arranged at a position corresponding to the contact position of the mirror chamber and the double-foot flexible supporting base.
6. The utility model provides a large-diameter lightweight mirror assembly's dress accent determine module which characterized in that includes:
the device comprises a base, an assembly and adjustment support frame arranged on the base and a detachable detection support frame connected with the assembly and adjustment support frame;
the assembling and adjusting support frame comprises a bottom plate, connecting seats are arranged at two ends of the bottom plate, and flange connecting pieces are arranged on the connecting seats; the center of the bottom plate is provided with a positioner used for positioning the detection support frame or the mirror chamber;
the detection support frame comprises a main frame, connecting flanges matched with flange connecting pieces on the connecting seats are arranged on two sides of the main frame, a bearing hanging strip is arranged at the top of the main frame, and a back frame used for connecting the back of the microscope base is arranged at the back of the main frame;
the back frame is provided with an auxiliary gravity unloading device for reducing neutral deformation of the reflector, the auxiliary gravity unloading device comprises a ball head, a lever and a heavy hammer, one end of the lever penetrates through the heavy hammer, the other end of the lever extends into a reflector seat of the reflector, and the ball head is arranged at one end, extending into the reflector seat, of the lever and is arranged in the reflector seat.
7. A method for adjusting and detecting a large-diameter light reflector is characterized by comprising the following steps:
1, placing the reflector and the mirror seat on a detection support frame for surface shape detection, dismantling the detection support frame after the surface shape detection is finished, and taking down the detection support frame to form the reflector and the mirror seat;
2, mounting the mirror chamber on the adjusting support frame, enabling the optical axis corresponding to the mirror chamber to be vertically upward, and then placing the reflector at the position corresponding to the position of the mirror chamber to ensure the size requirement between the reflector and the mirror chamber;
connecting the two-leg flexible support to the lens chamber, enabling the two-leg flexible support to be located between the lens chamber and the side wall of the lens base, simultaneously ensuring the gluing gap between the two-leg flexible support and the metal insert in the lens chamber, after the two-leg flexible support and the metal insert are adjusted in place, injecting epoxy structural adhesive into the matching gap for curing, and ensuring the temperature in the curing process of the structural adhesive so as to reduce the curing shrinkage stress;
and 4, installing an anti-toppling device after solidification is finished, finally overturning the reflector component, and detecting the surface shape under the condition that the optical axis is horizontal, so that the reflector surface shape error is ensured to be within the optical design requirement range, and the assembly of the reflector component is finished.
8. The method for detecting the adjustment of a large-diameter light-weight reflector according to claim 7, wherein: the step 2 of installing the mirror chamber on the adjusting support frame specifically comprises the following steps: the mirror chamber is connected with a connecting flange of the support frame, and the size between the reflector and the mirror chamber is ensured through a flexible nylon cushion block which is precisely processed.
9. The method for detecting the adjustment of a large-diameter light-weight reflector according to claim 7, wherein: the step 4 specifically comprises the following steps: after curing is finished, the support rod of the anti-toppling device penetrates out of a hole reserved at the back of the carbon fiber mirror chamber, the support surface of the anti-toppling device is arranged at the front end of the support rod, and the anti-toppling device is used for adjusting the mounting nut to ensure that the soft contact panel is in contact with the large-caliber light-weight reflector; and finally, turning over the reflector assembly, and detecting the surface shape under the condition that the optical axis is horizontal, so that the reflector surface shape error is ensured to be within the optical design requirement range, and the assembly of the reflector assembly is completed.
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