Assembling tool and assembling method for ceramic matrix composite light shield

Abstract

The invention relates to an assembly tool and an assembly method of a light shield, in particular to an assembly tool and an assembly method of a ceramic matrix composite light shield, which are used for solving the problems of insufficient precision caused by tolerance accumulation in the assembly process when a building block type assembly method is adopted for the ceramic matrix composite light shield. And a graphite tool block for supporting needs to be destructively removed after a product is assembled, so that the tool cannot be repeatedly used, and the resource waste is serious. The assembly tool for the ceramic matrix composite light shield comprises a base, a center shaft and N supporting units, each supporting unit is used for supporting a light shield ring, the assembly tool comprises A supporting assemblies, and each supporting assembly comprises a height adjusting block and a detachable supporting block; rapid and high-precision assembly of the ceramic matrix composite material light shield can be realized in a narrow space.

Description

Technical Field

[0001] The invention relates to an assembly tool and an assembly method for a sunshade, and in particular to an assembly tool and an assembly method for a sunshade made of a ceramic-based composite material. Background Art

[0002] As a new strategic material, ceramic matrix composites have been widely used in high-tech fields such as aviation, aerospace, satellite aerospace, nuclear energy and photovoltaics due to their excellent properties such as high temperature resistance, low density, high specific strength, high specific modulus, oxidation resistance, ablation resistance, insensitivity to cracks and no catastrophic damage. However, with the deepening of technological development and the increase in application demand, higher requirements are put forward for the structural design and assembly accuracy of ceramic matrix composites.

[0003] As an important component of the optical system, the sunshade needs to withstand high thermal stress and mechanical load during operation. Traditional alloy materials can no longer meet the requirements for the use of optical components under high temperature conditions. Ultra-high temperature ceramic-based composite materials have gradually become the main material choice for high-performance optical components due to their long-term stable performance under 1600℃ environment.

[0004] The common ceramic-based composite light shielding hoods on the market are composed of flanges, cylinders, light-blocking rings and other components. Multiple light-blocking rings are coaxially arranged in the cylinder, a light entrance hole is arranged at the large-diameter end of the cylinder, and a corresponding light exit hole is coaxially arranged at the small-diameter end. A flange is arranged in the light exit hole for connecting the optical lens. Multiple light-blocking rings are connected to the inner wall of the cylinder through composite pins, and their position accuracy directly determines the performance and durability of the light shielding hood. However, the traditional building block assembly method has significant disadvantages, including the accumulation of tolerances during the assembly process, resulting in insufficient precision, and the graphite tooling blocks used for support need to be destructively removed after the product assembly is completed, resulting in the non-reusability of the tooling and serious waste of resources.

[0005] Therefore, improving the assembly method of the sunshade, improving the assembly efficiency and precision, and developing reusable assembly tooling have become key issues that urgently need to be solved in the current technical field. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of ceramic-based composite material sunshade using a building block assembly method, such as the accumulation of tolerances during the assembly process resulting in insufficient precision, and the need for destructive removal of graphite tooling blocks used for support after product assembly, resulting in non-reusable tooling and serious waste of resources, and to provide an assembly tool and assembly method for a ceramic-based composite material sunshade.

[0007] In order to solve the deficiencies of the above-mentioned prior art, the present invention provides the following technical solutions:

[0008] An assembly tool for a ceramic-based composite material sunshade, which is special in that it includes a base, a central axis, and N support units, where N is the number of light-blocking rings of the ceramic-based composite material sunshade;

[0009] The central axis is used to be vertically arranged on the base, and A slide rails with upper ends opened are arranged axially on the side wall; A≥2;

[0010] Each of the support units is used to support a light-blocking ring, and each support unit includes A support components evenly distributed around the circumference of the central axis, and the A support components are respectively connected to A slide rails;

[0011] Each support assembly comprises a height adjustment block and a detachable support block which are sequentially connected to the corresponding slide rail; the inner end and the outer end of the height adjustment block are respectively provided with an inner clamping block and an outer clamping block; the inner clamping block is located in the corresponding slide rail, and the inner clamping block is provided with a height fixing member for fixing the inner clamping block to the inner wall of the slide rail; the detachable support block is provided with a clamping slot which opens downward and is adapted to the outer clamping block;

[0012] The minimum distance between the A detachable support blocks of each support unit and the axis of the central axis is less than the inner radius of the corresponding light blocking ring.

[0013] Furthermore, the inner clamping block is perpendicular to the height adjustment block, and a groove is radially arranged on the inner clamping block along the central axis. The height fixing piece is arranged in the groove, and the height fixing piece includes a cam and two pins symmetrically arranged on both sides of the cam. The cam is used to squeeze the two pins through its own rotation, so that the two sides of the inner clamping block are pressed against the two inner walls of the slide rail.

[0014] Furthermore, the slide rail and the inner clamping block are both dovetail-shaped.

[0015] Furthermore, the outer end of the height adjustment block and the inner end of the detachable support block are both inclined surfaces.

[0016] Furthermore, each of the slide rails is provided with a scale.

[0017] Furthermore, the value of A is 3.

[0018] A method for assembling a ceramic-based composite material sunshade is special in that: the method adopts the assembly tool of the ceramic-based composite material sunshade, and comprises the following steps:

[0019] Step 1: Place the flange of the ceramic matrix composite material sunshade on the base, and make the flange and the base fit together without any gap;

[0020] Step 2, vertically set the central axis on the base, and then coaxially sleeve the flange in step 1 outside the central axis;

[0021] Step 3, respectively introduce the A height adjustment blocks used to support the i-th light blocking ring into the slide rails from the upper end openings of the A slide rails, and fix the A height adjustment blocks at the i-th preset height through the height fixing parts, and complete the assembly of the A height adjustment blocks corresponding to the N light blocking rings in sequence from the light exit hole to the light entrance hole of the cylinder; i is the ordinal number of the light blocking ring, i=1, ..., N; the preset height is the height from the bottom surface of the i-th light blocking ring to the top surface of the base;

[0022] Step 4: Fix the light outlet hole of the cylinder to the flange based on the inner surface of the flange;

[0023] Step 5, respectively connect the A height adjustment block outer clamping blocks used to support the i-th light blocking ring with the A detachable support block clamping slots to complete the assembly of the A detachable support blocks, and then assemble the i-th light blocking ring, and complete the assembly of N light blocking rings in sequence from the light exit hole to the light entrance hole of the cylinder;

[0024] Step 6. After all the light-blocking rings are assembled, pull out the assembly tooling of the ceramic-based composite material light shield from under the ceramic-based composite material light shield, so that all the outer blocks of the height adjustment blocks are disengaged from the corresponding detachable support block slots, complete the disassembly of all the detachable support blocks, and obtain the assembled ceramic-based composite material light shield.

[0025] Further, in step 3, the step of fixing the A height adjustment blocks at a preset height by means of a height fixing member is specifically as follows:

[0026] The cams of each height adjustment block are rotated to press the two sides of the corresponding inner clamping block against the two inner side walls of the corresponding slide rail, thereby fixing each height adjustment block at a preset height.

[0027] Furthermore, step 7 is included, as follows: rotate the cam of each height adjustment block to loosen the pins on both sides thereof, then slide all the height adjustment blocks out from the upper end opening of the corresponding slide rail, and then disassemble the central axis and the base to complete the disassembly of the assembly tooling of the ceramic-based composite material sunshade.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] (1) The present invention discloses an assembly tool for a ceramic-based composite material sunshade, comprising a base, a central axis, and N support units, each support unit being used to support a light-blocking ring, and comprising A support components, each support component comprising a height-adjusting block and a detachable support block; the height-adjusting block can fix the height position of each layer of light-blocking plate parts in advance, thereby reducing the cumulative height error compared to the traditional layer-by-layer assembly positioning method, and greatly improving the assembly quality of the ceramic-based composite material sunshade; the detachable support block supports the light-blocking ring, and during the process of pulling the assembly tool for the ceramic-based composite material sunshade out from under the ceramic-based composite material sunshade, the outer card block of the height-adjusting block can be disengaged from the corresponding detachable support block card slot to remove all the detachable support blocks; the present invention can realize rapid and high-precision assembly of the ceramic-based composite material sunshade in a narrow space, and the support length and support height of the tool are adjustable, with good flexibility, and can ensure the product quality requirements of the ceramic-based composite material sunshade.

[0030] (2) After the height adjustment block of the present invention is adjusted by rotating the cam, it can slide out directly from the slide rail, and the detachable support block can be easily disassembled and reused through the slot design. Therefore, the life cycle of the tooling is extended and resource waste is significantly reduced.

[0031] (3) The present invention enables each support assembly to be fixed very accurately at a preset height through the cooperation of the slide rail and the inner clamping block, which enables the position of each light-blocking ring to be precisely controlled, avoiding the accumulation of tolerances and ensuring that the performance of the light-shield is stable and precise.

[0032] (4) The present invention can flexibly support the installation of multiple light-blocking rings through the cooperation of multiple supporting units; the height adjustment block and the detachable supporting block of each supporting unit can be adjusted as needed, and the installation of each light-blocking ring can ensure precise positioning and stable support; this design enhances the versatility of the tooling, can meet the assembly requirements of light-blocking rings of different sizes and different numbers, and has higher flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 An isometric view of an embodiment of an assembly tool for a ceramic-based composite light shield according to the present invention;

[0034] Figure 2 It is an exploded schematic diagram of an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the structure of the external card block and the card slot in an embodiment of the present invention;

[0036] Figure 4 It is a schematic diagram of the structure of the cam and the pin in the embodiment of the present invention;

[0037] Figure 5 is an isometric view of an embodiment of the present invention and a ceramic matrix composite light shield;

[0038] Figure 6 It is a cross-sectional view of an embodiment of the present invention and a ceramic-based composite material sunshade.

[0039] The reference numerals are as follows: 01-cylinder; 02-flange; 03-light blocking ring; 100-base; 200-center axis; 210-slide rail; 300-support unit; 310-support assembly; 311-height adjustment block; 312-detachable support block; 313-inner clamping block; 314-outer clamping block; 315-slot; 316-cam; 317-pin. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the accompanying drawings and exemplary embodiments.

[0041] Reference Figures 1 to 6 An assembly tool for a ceramic-based composite material sunshade includes a base 100, a central axis 200, and N supporting units 300, where N is the number of light-blocking rings 03 of the ceramic-based composite material sunshade.

[0042] The central axis 200 is used to be vertically arranged on the base 100, and A slide rails 210 with upper ends opened are arranged axially on the side wall, A≥2; in this embodiment, A=3. Each slide rail 210 is a dovetail structure, and its axial cross section is a trapezoid. Each slide rail 210 is provided with a scale.

[0043] Each of the support units 300 is used to support a light blocking ring 03 , and each of the support units 300 includes A support components 310 evenly distributed around the circumference of the central axis 200 , and the A support components 310 are respectively connected to A slide rails 210 .

[0044] Each support assembly 310 includes a height adjustment block 311 and a detachable support block 312 which are sequentially connected to the corresponding slide rail 210 ; an inner clamping block 313 and an outer clamping block 314 are respectively disposed at the inner and outer ends of the height adjustment block 311 .

[0045] The inner block 313 is located in the corresponding slide rail 210 and is perpendicular to the height adjustment block 311; the inner block 313 is provided with a height fixing member for fixing the inner block 313 to the inner wall of the slide rail 210; specifically, a groove is provided on the inner block 313 along the radial direction of the central axis 200, and the height fixing member is provided in the groove; refer to Figure 4 The height fixing member includes a cam 316 and two pins 317 symmetrically arranged on both sides of the cam 316. The cam 316 is used to squeeze the two pins 317 by rotating itself, so that the two sides of the inner block 313 are pressed against the two inner side walls of the slide rail 210.

[0046] The inner blocks 313 are all dovetail structures adapted to the slide rails 210 to increase stability and improve load-bearing capacity.

[0047] Reference Figure 3 The inner end of the detachable support block 312 is provided with a slot 315 that opens downward and fits with the outer clamping block 314; the outer end of the height adjustment block 311 and the inner end of the detachable support block 312 are both inclined. Through the cooperation of the slot 315 and the outer clamping block 314, the detachable support block 312 can accurately enter the predetermined position during the assembly process. During disassembly, due to the design of the inclined surface, the outer clamping block 314 can slide with the slot 315, making disassembly more efficient and reducing the situation of getting stuck or clamped.

[0048] The minimum distance between the A detachable support blocks 312 of each support unit 300 and the central axis 200 is less than the inner radius of the corresponding light blocking ring 03. When the assembly tool of the ceramic matrix composite material light shield is pulled out from under the ceramic matrix composite material light shield, the detachable support block 312 is hindered by the light blocking sheet, so that the outer block 314 of the height adjustment block 311 is disengaged from the corresponding detachable support block 312 slot 315.

[0049] A method for assembling a ceramic-based composite material sunshade, using the above-mentioned ceramic-based composite material sunshade assembly tool, comprises the following steps:

[0050] Step 1: Place the flange 02 of the ceramic matrix composite material sunshade on the base 100, and trim the flange 02 so that the flange 02 and the base 100 fit together without any gap;

[0051] Step 2, vertically set the central axis 200 on the base 100 through the threaded hole on the top surface of the base 100, and then coaxially sleeve the flange 02 in step 1 outside the central axis 200;

[0052] Step 3, introduce the A height adjustment blocks 311 used for supporting the i-th light blocking ring 03 into the slide rail 210 from the upper end opening of the A slide rail 210, and rotate each cam 316 to press the two sides of the inner block 313 against the two inner side walls of the slide rail 210, and then fix the A height adjustment blocks 311 at the i-th preset height, and complete the assembly of the A height adjustment blocks 311 corresponding to the N light blocking rings 03 in sequence from the light exit hole to the light entrance hole of the cylinder 01; i is the ordinal number of the light blocking ring (03), i=1, ..., N; the preset height is the height from the bottom surface of the i-th light blocking ring 03 to the top surface of the base 100;

[0053] Step 4: Using the inner surface of flange 02 as a reference, fix the light outlet hole of cylinder 01 to flange 02;

[0054] Step 5, respectively engage the A outer clamping blocks 314 of the height adjustment block 311 used to support the i-th light blocking ring 03 with the clamping slots 315 of the A detachable support blocks 312 to complete the assembly of the A detachable support blocks 312, and then assemble the i-th light blocking ring 03, and sequentially complete the assembly of N light blocking rings 03 from the light exit hole to the light entrance hole of the cylinder 01;

[0055] Step 6, after all the light blocking rings 03 are assembled, the assembly tool of the ceramic-based composite material sunshade is pulled out from under the ceramic-based composite material sunshade, so that all the outer clamping blocks 314 of the height adjustment blocks 311 are disengaged from the corresponding clamping slots 315 of the detachable support blocks 312, and the disassembly of all the detachable support blocks 312 is completed, and the assembled ceramic-based composite material sunshade is obtained;

[0056] Step 7, rotate the cam 316 of each height adjustment block 311 to loosen the pins 317 on both sides, then slide all the height adjustment blocks 311 out from the upper end opening of the corresponding slide rail 210, and then disassemble the central axis 200 and the base 100 to complete the disassembly of the assembly tooling of the ceramic-based composite material sunshade.

Claims

1. An assembly tool for a ceramic-based composite sunshade, characterized in that: It comprises a base (100), a central axis (200), and N supporting units (300), wherein N is the number of light-blocking rings (03) of the ceramic-based composite material light shield; The central axis (200) is used to be vertically arranged on the base (100), and A slide rails (210) with upper ends opened are axially arranged on the side wall; A≥2; Each of the support units (300) is used to support a light-blocking ring (03), and each support unit (300) comprises A support assemblies (310) uniformly distributed around the circumference of the central axis (200), and the A support assemblies (310) are respectively connected to A slide rails (210); Each support assembly (310) comprises a height adjustment block (311) and a detachable support block (312) which are sequentially connected to the corresponding slide rail (210); the inner end and the outer end of the height adjustment block (311) are respectively provided with an inner clamping block (313) and an outer clamping block (314); the inner clamping block (313) is located in the corresponding slide rail (210), and the inner clamping block (313) is provided with a height fixing member for fixing the inner clamping block (313) to the inner wall of the slide rail (210); the detachable support block (312) is provided with a clamping slot (315) which opens downward and is adapted to the outer clamping block (314); The minimum distance between the A detachable support blocks (312) of each support unit (300) and the axis of the central axis (200) is less than the inner radius of the corresponding light blocking ring (03).

2. The assembly tool for a ceramic matrix composite material sunshade according to claim 1, characterized in that: The inner clamping block (313) is perpendicular to the height adjustment block (311). A groove is radially arranged on the inner clamping block (313) along the central axis (200). The height fixing member is arranged in the groove. The height fixing member comprises a cam (316) and two pins (317) symmetrically arranged on both sides of the cam (316). The cam (316) is used to squeeze the two pins (317) by rotating itself, so that the two sides of the inner clamping block (313) are pressed against the two inner side walls of the slide rail (210).

3. The assembly tool for a ceramic matrix composite material sunshade according to claim 2, characterized in that: The slide rail (210) and the inner clamping block (313) are both dovetail-shaped.

4. An assembly tool for a ceramic matrix composite light shield according to any one of claims 1 to 3, characterized in that: The outer end of the height adjustment block (311) and the inner end of the detachable support block (312) are both inclined surfaces.

5. The assembly tool for a ceramic matrix composite material sunshade according to claim 4, characterized in that: Each of the slide rails (210) is provided with a scale.

6. The assembly tool for a ceramic matrix composite light shield according to claim 5, characterized in that: The value of A is 3.

7. A method for assembling a ceramic matrix composite material sunshade, characterized in that: The assembly tool of the ceramic-based composite material sunshade according to claim 1 comprises the following steps: Step 1: placing the flange (02) of the ceramic-based composite material sunshade on the base (100), and making the flange (02) and the base (100) fit closely together without any gap; Step 2, vertically arrange the central axis (200) on the base (100), and then coaxially sleeve the flange (02) in step 1 outside the central axis (200); Step 3, introducing A height adjustment blocks (311) for supporting the i-th light blocking ring (03) into the slide rail (210) from the upper end openings of the A slide rails (210), and fixing the A height adjustment blocks (311) at the i-th preset height through height fixing members, and completing the assembly of the A height adjustment blocks (311) corresponding to the N light blocking rings (03) in sequence from the light exit hole to the light entrance hole of the cylinder (01); i is the ordinal number of the light blocking ring (03), i=1, ..., N; the preset height is the height from the bottom surface of the i-th light blocking ring (03) to the top surface of the base (100); Step 4: Using the inner surface of the flange (02) as a reference, fix the light outlet hole of the cylinder (01) and the flange (02); Step 5, respectively engaging the outer clamping blocks (314) of the A height adjustment blocks (311) for supporting the i-th light blocking ring (03) with the clamping grooves (315) of the A-th detachable support blocks (312), completing the assembly of the A-th detachable support blocks (312), and then assembling the i-th light blocking ring (03), and completing the assembly of the N-th light blocking rings (03) in sequence from the light exit hole to the light entrance hole of the cylinder (01); Step 6: After all the light-blocking rings (03) are assembled, the assembly tooling of the ceramic-based composite material light shield is pulled out from under the ceramic-based composite material light shield, so that all the height adjustment blocks (311) and the outer clamping blocks (314) are disengaged from the corresponding detachable support block (312) slots (315), and all the detachable support blocks (312) are disassembled, and the assembled ceramic-based composite material light shield is obtained.

8. The method for assembling a ceramic matrix composite light shield according to claim 7, characterized in that: In step 3, the method of fixing the A height adjustment blocks (311) at a preset height by means of a height fixing member is specifically as follows: The cam (316) of each height adjustment block (311) is rotated to press the two sides of the corresponding inner clamping block (313) against the two inner side walls of the corresponding slide rail (210), thereby fixing each height adjustment block (311) at a preset height.

9. The method for assembling a ceramic matrix composite material sunshade according to claim 7 or 8, characterized in that: Also includes step 7, as follows: The cams (316) of the height adjustment blocks (311) are rotated to loosen the pins (317) on both sides thereof, and then all the height adjustment blocks (311) are slid out from the upper openings of the corresponding slide rails (210), and then the central shaft (200) and the base (100) are disassembled to complete the disassembly of the assembly tool of the ceramic-based composite material sunshade.

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