阅读说明：本技术 一种航空光窗的低应力导电密封装调装置及方法 (Low-stress conductive sealing assembly and adjustment device and method for aviation optical window ) 是由 孙佳明 王敏 屈亮 孙庆伟 远卓 李岳峰 王亮 周景欢 于 2019-10-09 设计创作，主要内容包括：本发明涉及一种航空光窗的低应力导电密封装调装置及方法,通过使用测高仪、精密电控调整台、自准直光管等仪器设备,与光窗装调基准工装、光窗支撑工装等专用工艺装备以及复合粘接层,能够快速建立航空光窗的装调基准、提高装调精度、降低装夹应力与粘接应力,避免装调应力,在保证航空光窗密封性能、电磁屏蔽性能的同时保证光学性能,大大提高航空光窗的装调效率与装调质量。(The invention relates to a low-stress conductive sealing assembly and adjustment device and method for an aviation optical window, which can quickly establish the assembly and adjustment reference of the aviation optical window, improve the assembly and adjustment precision, reduce the clamping stress and the bonding stress, avoid the assembly and adjustment stress, ensure the optical performance while ensuring the sealing performance and the electromagnetic shielding performance of the aviation optical window and greatly improve the assembly and adjustment efficiency and the assembly and adjustment quality of the aviation optical window by using an altimeter, a precise electric control adjustment table, an auto-collimation light tube and other instrument equipment, special process equipment such as an optical window assembly and adjustment reference tool, an optical window supporting tool and the like and a composite bonding layer.)

1. A low-stress conductive sealing assembly and adjustment device of an aviation optical window is characterized by comprising an assembly and adjustment platform (1), an optical window frame fixing tool (2), a height indicator (3), an optical window assembly and adjustment reference tool (4), an optical window supporting tool (6), a precise electric control adjustment table (7) and an auto-collimation light pipe (8); the assembly and adjustment platform (1) is a base in the whole assembly and adjustment process, and the optical window frame fixing tool (2), the height measuring instrument (3), the optical window assembly and adjustment reference tool (4), the optical window supporting tool (6), the precise electric control adjustment platform (7), the auto-collimation light pipe (8) and the aviation optical window (5) to be assembled and adjusted are all arranged on the assembly and adjustment platform (1); the optical window frame fixing tool (2) is used for fixing the optical window frame (5A) and adjusting the angle of the surface to be assembled of the optical window frame (5A); the height indicator (3) is used for measuring the angle of the surface to be assembled of the optical window frame (5A); the optical window assembling and adjusting reference tool (4) is used for leading out a surface to be assembled of the optical window frame (5A) and providing a reference surface for the assembling and adjusting process of the aviation optical window (5); the optical window supporting tool (6) is arranged on the precise electric control adjusting table (7) and is used for supporting the optical window part (5B); the precise electric control adjusting platform (7) is arranged on the mounting and adjusting platform (1) and is used for precisely adjusting the position and the posture of the optical window part (5B) and ensuring the consistency of the position and the posture when the optical window part (5B) is mounted and assembled in a trial mode; the auto-collimation light pipe (8) is arranged on the adjusting platform (1) and is used for monitoring the angle of the optical window part (5B) in the adjusting process.

2. A low-stress conductive sealing assembly and adjustment device of an aviation optical window is characterized in that an optical window assembly and adjustment reference tool (4) comprises a top block (4A), a top rod (4B) and a base (4C), wherein the upper surface of the top block (4A) is provided with a flow guide groove for ensuring the flow of an adhesive; the ejector block (4A) is matched with the ejector rod (4B) through a ball head, and is used for ensuring that the ejector block (4A) is in angle fit with a surface to be assembled of the optical window frame (5A); the ejector rod (4B) is in threaded fit with the base (4C) and is used for adjusting the height of the ejector block (4A).

3. A method for assembling and adjusting a low-stress conductive seal of an aviation optical window by using the device of claim 2, which is characterized by comprising the following steps:

step 1: installing an optical window frame fixing tool (2) on an assembly and adjustment platform (1), supporting an optical window frame (5A) by using the optical window frame fixing tool (2), measuring the height of the surface to be assembled of the optical window frame (5A) along the periphery of an assembly gap by using a height measuring instrument (3), and adjusting a gasket between the optical window frame fixing tool (2) and the optical window frame (5A) to make the heights of all points measured on the surface to be assembled of the optical window frame (5A) consistent;

step 2: installing an optical window assembling reference tool (4) on an assembling platform (1), adjusting the height of a top block (4A) by adjusting the thread depth of a top rod (4B) screwed into a base (4C), so that the top block (4A) is attached to the surface to be assembled of an optical window frame (5A), and a guide groove of the top block (4A) covers the width of an assembling gap of the surface to be assembled of the optical window frame (5A);

and step 3: placing the optical window part (5B) on a top block (4A) of the optical window adjusting reference tool (4), and adjusting the auto-collimation light pipe (8) to enable the auto-collimation light pipe (8) to be auto-collimated relative to the surface of the optical window part (5B);

and 4, step 4: installing the optical window supporting tool (6) on the precise electric control adjusting table (7), adjusting the height of the precise electric control adjusting table (7), finely adjusting the optical window supporting tool (6) to enable the optical window part (5B) to be separated from the top block (4A), and enabling the surface of the optical window part (5B) to be self-collimated relative to the self-collimating light tube (8);

and 5: adjusting the precise electric control adjusting table (7) to finely adjust the optical window supporting tool (6), so that the optical window part (5B) is attached to the jacking block (4A), and the gap between the optical window part (5B) and the optical window frame (5A) is equidistant;

step 6: adjusting the precise electric control adjusting table (7) to enable the optical window part (5B) to be separated from the top block (4A), and recording the adjusting amount of the precise electric control adjusting table (7);

and 7: coating a thin layer of conductive adhesive (9A) at the position, close to the outer side, of the bonding gap of the optical window frame (5A), adjusting a precise electric control adjusting table (7), and reversely adjusting according to the adjustment amount in the step 6 to enable the optical window part (5B) to return to the original position;

and 8: adjusting the precise electric control adjusting table (7) to enable the optical window supporting tool (6) to be separated from the optical window part (5B), and standing until the conductive adhesive (9A) is completely cured;

and step 9: and sealing adhesive (9B) is encapsulated at the bonding gap between the optical window frame (5A) and the optical window part (5B), and the inner side and the outer side of the composite bonding layer (9) are subjected to glue supplementing and shape correcting, so that the bonding continuity is ensured.

Technical Field

The invention belongs to the technical field of optical machine assembly and adjustment, and relates to low-stress conductive sealing assembly and adjustment of an aviation optical window, which can quickly establish an assembly and adjustment reference, improve assembly and adjustment precision, avoid assembly and adjustment stress, and ensure the optical performance while ensuring the sealing performance and the electromagnetic shielding performance of the aviation optical window.

Background

The aviation optical window is an optical window of an airborne photoelectric detection system, and the quality of the installation and adjustment result directly determines the optical performance, the sealing performance and the electromagnetic shielding performance of the system. Due to the structural particularity, the assembly and adjustment process has no direct assembly and adjustment reference, large clamping stress and bonding stress are easily introduced, and the optical precision, the sealing requirement and the electromagnetic shielding requirement are difficult to ensure simultaneously. The aviation optical window generally provides an assembly and adjustment reference through the matching of a fixed leaning surface, and restricts the assembly and adjustment freedom degree by using the plug sheet and the pressing plate, the assembly and adjustment stress is large, the optical performance is reduced, and the sealing performance and the electromagnetic shielding performance are difficult to ensure at the same time.

Disclosure of Invention

Technical problem to be solved

In order to avoid the defects of the prior art, the invention provides a low-stress conductive sealing assembly and adjustment device and method for an aviation light window.

Technical scheme

A low-stress conductive sealing assembly and adjustment device for an aviation optical window is characterized by comprising an assembly and adjustment platform, an optical window frame fixing tool, a height indicator, an optical window assembly and adjustment reference tool, an optical window supporting tool, a precise electric control adjustment table and an auto-collimation light pipe; the assembly and adjustment platform is a base in the whole assembly and adjustment process, and the optical window frame fixing tool, the height measuring instrument, the optical window assembly and adjustment reference tool, the optical window supporting tool, the precise electric control adjustment platform, the auto-collimation light pipe and the aviation optical window to be assembled and adjusted are all arranged on the assembly and adjustment platform; the optical window frame fixing tool is used for fixing the optical window frame and adjusting the angle of the surface to be assembled of the optical window frame; the height measuring instrument is used for measuring the angle of the surface to be assembled of the optical window frame; the optical window assembling reference tool is used for leading out a surface to be assembled of the optical window frame and providing a reference surface for an aviation optical window assembling process; the optical window supporting tool is arranged on the precise electric control adjusting table and used for supporting the optical window part; the precise electric control adjusting platform is arranged on the assembling and adjusting platform and used for precisely adjusting the position and the posture of the optical window part and ensuring the consistency of the position and the posture of the optical window part during trial assembly and assembly; the auto-collimation light pipe is arranged on the adjusting platform and used for monitoring the angle of the light window part in the adjusting process.

The optical window assembling and adjusting reference tool comprises a top block, a top rod and a base, wherein a flow guide groove is formed in the upper surface of the top block and used for ensuring the flowing of an adhesive; the ejector block and the ejector rod are matched by a ball head and are used for ensuring the angle fit of the ejector block and the surface to be assembled of the optical window frame; the ejector rod is in threaded fit with the base and is used for adjusting the height of the ejector block.

A low-stress conductive sealing assembly and adjustment method of an aviation optical window is characterized by comprising the following steps:

step 1: installing an optical window frame fixing tool on the assembling and adjusting platform, supporting the optical window frame by using the optical window frame fixing tool, measuring the height of the surface to be assembled of the optical window frame along the periphery of the assembling gap by using a height measuring instrument, and adjusting a gasket between the optical window frame fixing tool and the measured optical window frame to ensure that the heights of all points measured on the surface to be assembled of the optical window frame are consistent;

step 2: installing the optical window assembling reference tool on the assembling platform, adjusting the height of the ejector block by adjusting the thread depth of the ejector rod screwed into the base, so that the ejector block is attached to the surface to be assembled of the optical window frame, and the ejector block diversion trench covers the assembling gap width of the surface to be assembled of the optical window frame;

and step 3: placing the optical window part on a top block of an optical window adjusting reference tool, and adjusting the auto-collimation light tube to enable the auto-collimation light tube to be auto-collimated relative to the surface of the optical window part;

and 4, step 4: installing the optical window supporting tool on the precise electric control adjusting table, adjusting the height of the precise electric control adjusting table, and finely adjusting the optical window supporting tool to enable the optical window part to be separated from the top block, wherein the surface of the optical window part is self-aligned relative to the auto-collimation light pipe;

and 5: adjusting the precise electric control adjusting table to finely adjust the optical window supporting tool, so that the optical window part is attached to the jacking block, and the gap between the optical window part and the optical window frame is equidistant;

step 6: adjusting the precise electric control adjusting table to enable the optical window part to be separated from the jacking block, and recording the adjusting amount of the precise electric control adjusting table;

and 7: coating a thin layer of conductive adhesive on the position, close to the outer side, of the bonding gap of the optical window frame, adjusting the precise electric control adjusting table, and reversely adjusting according to the adjustment amount in the step 6 to enable the optical window part to return to the original position;

and 8: adjusting the precise electric control adjusting table to enable the optical window supporting tool to be separated from the optical window part, and standing until the conductive adhesive is completely cured;

and step 9: and sealing adhesive is filled and sealed in the bonding gap between the optical window frame and the optical window part, and the inner side and the outer side of the composite bonding layer are subjected to adhesive repairing and shape correction, so that the bonding continuity is ensured.

Advantageous effects

According to the low-stress conductive sealing assembly and adjustment device and method for the aviation optical window, provided by the invention, the assembly and adjustment reference of the aviation optical window can be quickly established, the assembly and adjustment precision is improved, the clamping stress and the bonding stress are reduced, the assembly and adjustment stress is avoided, the optical performance is ensured while the sealing performance and the electromagnetic shielding performance of the aviation optical window are ensured, and the assembly and adjustment efficiency and the assembly and adjustment quality of the aviation optical window are greatly improved by using the height measuring instrument, the precise electric control adjustment table, the auto-collimation light tube and other instrument equipment, special process equipment such as an optical window assembly and adjustment reference tool, an optical window supporting tool and the like, and the composite bonding layer. The characteristics are as follows:

1) an optical window assembling and adjusting reference tool is used for providing a flexible assembling and adjusting reference, so that clamping stress is avoided;

2) the angle of the surface to be assembled of the optical window frame is ensured by using a height measuring instrument, the repeated assembly and adjustment precision is ensured by using a precise electric control adjusting platform, and the angle of an optical window part in the assembly and adjustment process is monitored by using an auto-collimation tube, so that high-precision assembly and adjustment can be realized;

3) the composite adhesive layer is used, and the sealing adhesive is filled and sealed after the conductive adhesive is adhered and positioned, so that the sealing performance and the electromagnetic shielding performance of the aviation optical window can be ensured, the adhesion stress is reduced, and the optical performance is improved.

Drawings

FIG. 1 is a schematic diagram of the assembly system of the present invention.

The device comprises a 1-assembling and adjusting platform, a 2-optical window frame supporting tool, a 3-altimeter, a 4-optical window assembling and adjusting reference tool, a 4A-ejector block, a 4B-ejector rod, a 4C-base, a 5-aviation optical window, a 5A-optical window frame, a 5B-optical window part, a 6-optical window supporting tool, a 7-precise electric control adjusting table, an 8-autocollimation tube, a 9-composite bonding layer, a 9A-conductive bonding agent and a 9B-sealing bonding agent.

Detailed Description

The invention will now be further described with reference to the following examples and drawings:

a low-stress conductive sealing assembly and adjustment device for an aviation optical window comprises an assembly and adjustment platform 1, an optical window frame fixing tool 2, a height indicator 3, an optical window assembly and adjustment reference tool 4, an optical window supporting tool 6, a precise electric control adjustment table 7 and an auto-collimation light pipe 8;

the assembly and debugging platform 1 is a base in the whole assembly and debugging process, and all the assembly and debugging detection equipment, the assembly and debugging tool and the aviation optical window 5 to be assembled and debugged are installed on the assembly and debugging platform 1;

the optical window frame fixing tool 2 is used for supporting the optical window frame 5A and adjusting the angle of the surface to be assembled of the optical window frame 5A;

the height indicator 3 is used for measuring the angle of the surface to be assembled of the optical window frame 5A;

the optical window assembling reference tool 4 is used for leading out a surface to be assembled of the optical window frame 5A and providing a reference surface for the assembling process of the aviation optical window 5;

the optical window supporting tool 6 is arranged on the precise electric control adjusting table 7 and used for supporting the optical window part 5B;

the precise electric control adjusting platform 7 is arranged on the assembling and adjusting platform 1 and is used for precisely adjusting the position and the posture of the optical window part 5B and ensuring the consistency of the position and the posture when the optical window part 5B is assembled and tried;

the auto-collimation light pipe 8 is arranged on the assembling and adjusting platform 1 and used for monitoring the angle of the optical window part 5B in the assembling and adjusting process;

the optical window assembling and adjusting reference tool 4 consists of a top block 4A, a top rod 4B and a base 4C, and a flow guide groove is formed in the upper surface of the top block 4A and used for ensuring the flowing of an adhesive; the ejector block 4A and the ejector rod 4B are matched by a ball head and used for ensuring that the ejector block 4A is in angle fit with a surface to be assembled of the optical window frame 5A; the ejector rod 4B is in threaded fit with the base 4C and is used for adjusting the height of the ejector block 4A;

the method is realized based on the low-stress conductive sealing assembly and adjustment device of the aviation optical window, and comprises the following steps:

1) installing an optical window frame fixing tool 2 on an assembly and debugging platform 1, supporting an optical window frame 5A by using the optical window frame fixing tool 2, measuring the height of the surface to be assembled of the optical window frame 5A along the periphery of an assembly gap by using a height measuring instrument 3, adjusting the optical window frame fixing tool 2 to ensure that the heights of all points measured on the surface to be assembled of the optical window frame 5A are consistent, and ensuring that the surface to be assembled of the optical window frame 5A is parallel to the assembly and debugging platform 1;

2) installing an optical window assembling reference tool 4 on an assembling platform 1, adjusting the height of a top block 4A by adjusting the screw thread depth of a top rod 4B screwed into a base 4C, enabling the top block 4A to be just attached to the surface to be assembled of an optical window frame 5A from bottom to top, enabling the stress point of the top rod 4B to be located on one side of the surface to be assembled of the optical window frame 5A, enabling the width of a guide groove of the top block 4A to cover the width of an assembling gap of the surface to be assembled of the optical window frame 5A, and facilitating the flowing of overflowing glue;

3) placing the optical window part 5B on a top block 4A of the optical window adjusting reference tool 4, and adjusting the auto-collimation light pipe 8 to enable the auto-collimation light pipe 8 to be auto-collimated relative to the surface of the optical window part 5B;

4) installing an optical window supporting tool 6 on a precise electric control adjusting table 7, adjusting the height of the precise electric control adjusting table 7, and finely adjusting the optical window supporting tool 6 to enable an optical window part 5B to be separated from a top block 4A, wherein the surface of the optical window part 5B is self-collimated relative to a self-collimating light pipe (8);

5) measuring the gap between the optical window frame 5A and the optical window part 5B by using a feeler gauge, adjusting a precise electric control adjusting table 7 and finely adjusting an optical window supporting tool 6 to ensure that the optical window part 5B is attached to the top block 4A and the gap between the optical window part 5B and the optical window frame 5A is uniform;

6) adjusting the precise electric control adjusting table 7 to enable the optical window part 5B to be separated from the top block 4A, and recording the adjusting amount of the precise electric control adjusting table 7 in the step;

7) coating a thin layer of conductive adhesive 9A on the position, close to the outer side, of the bonding gap of the optical window frame 5A, adjusting the precise electric control adjusting table 7, and adjusting reversely according to the adjustment amount in the step 6 to enable the optical window part 5B to return to the original position;

8) adjusting the precise electric control adjusting table 7 to separate the optical window supporting tool 6 from the optical window part 5B, wherein the optical window part 5B is only supported by the optical window assembling and adjusting reference tool 4; standing until the conductive adhesive 9A is completely cured;

9) and continuously encapsulating a sealing adhesive 9B at the bonding gap between the optical window frame 5A and the optical window part 5B, and performing adhesive repairing and shape correcting on the inner side and the outer side of the composite bonding layer 9 to ensure the bonding continuity.