CN-117360789-B - Method for butt joint positioning detection of aircraft wall panels

Abstract

The invention belongs to the technical field of process equipment design and manufacturing, and relates to an aircraft wallboard butt joint positioning detection method. Specifically, the method relates to the detection of the positions of stringers and skins at the butt joint positions after the butt joint assembly of the aircraft panels is completed and is used for detecting the positions of stringers and skins at the butt joint positions after the butt joint assembly of the panels is completed. The problem that positioning positions such as stringers, backing plates and the like at the butt joint positions of the wall plates after butt joint lack special inspection means is solved, and the method does not influence the use of the assembly type frame and the assembly progress during detection. The detection device has the advantages of simple design, low manufacturing cost and small occupied area.

Inventors

• JIN ZHAO
• LIU JIANCHAO
• ZHANG JIA
• YU ZHILIANG
• DONG LU
• ZHANG HAORAN
• GU TIANYU
• DAI FAN

Assignees

• 陕西飞机工业有限责任公司

Dates

Publication Date

20260505

Application Date

20231027

Claims (9)

1. 1. The method for detecting the butt joint positioning of the aircraft wall panel is characterized by comprising the following steps of: Step 1, firstly, determining detection precision and detection area aiming at a part to be detected, measuring the assembly digital model of the wallboard of the area to be detected, loading two butt joint wallboards into the assembly digital model simultaneously, determining the installation positions of two positioning devices, Step 2, selecting the position of a positioning device in the product digital-analog of CATIA software, designing a plane cutting product digital-analog, determining the shape of the positioning position, setting a starting detection position on the positioning device, designing a plane at the starting detection position, cutting the product digital-analog, determining the shape of the butted joint of the wall plates; Projecting the stringer axis position and the skin butt joint position in the plane designed by each detection device, projecting lines formed by the plane cutting product digital-analog of the positioning device, marking each detection position, projecting lines formed by the plane cutting product digital-analog of each detection device and the stringer position and the skin butt joint position projected on each detection device, and carrying out data processing on the corresponding lines in CAD software; Step 4, cutting the graph formed by the projection planes of the positioning device and the detection device by using a laser cutting machine to obtain a detection device object; And 5, installing a positioning device on the wall plate subjected to butt joint, installing a detection device according to the station surface scribing on the positioning device, and checking the coincidence degree of the butt joint wall plate on the detection device.
2. 2. The method of claim 1, further comprising step 6, wherein if the abutting wall plate meets the detection requirements, the abutting wall plate positioning accuracy is proved to meet the detection requirements if the abutting wall plate meets the detection requirements, otherwise, the abutting wall plate abutting accuracy is not met.
3. 3. The method of claim 2, wherein the greater the change in shape of the docking station assembly, the greater the required accuracy of detection, the denser the arrangement of detection devices, the greater the detection area, and the greater the number of detection devices required.
4. 4. A method according to claim 3, wherein the plane of the positioning device design is determined by the stringer surface or the surface of the part mounted in the panel for ease of installation.
5. 5. The method of claim 4, wherein the initial inspection position in step 2 is a position 50mm from the edge of the area of the assembly to be inspected.
6. 6. The method of claim 5, wherein marking each of the test locations is performed by processing the wire in CAD software to obtain a mark of the test location.
7. 7. The method of claim 6, wherein the positioning device and the detecting device in the step 4 are both made of 2MM steel plates.
8. 8. The method of claim 7, wherein to increase the accuracy of the detection, the density of the detection device design is increased or the number of marks per detection device is increased.
9. 9. The method of claim 8, wherein the positional relationship of the detection device to the assembly to be tested is determined based on the specific shape of the assembly to be tested.

Description

Method for butt joint positioning detection of aircraft wall panels Technical Field The invention belongs to the technical field of process equipment design and manufacturing, and relates to an aircraft wallboard butt joint positioning detection method. Background In the butt joint assembly process of the wall plates, the stringer, the skin, the compensation sheet and other parts are required to be positioned by means of the frame, and the positioning positions of the stringer, the backing plate and the like at the butt joint position after the wall plates are in butt joint lack of special inspection means. At present, the assembly type rack for butt joint of the wall plates is used as a positioning assembly device and a checking device when the wall plates are assembled in a butt joint mode. Such a construction results in an inability to efficiently verify the installation location of the stringers at the butt joint and the overlap location of the butt joint skin as the panel is being removed from the assembled rack. Disclosure of Invention Object of the Invention The invention provides a detection method and a detection device, which are used for detecting the positions of stringers and skins at the butt joint positions after the assembly and butt joint of wall plates are completed. Specifically, the device and the method for detecting the butt joint positions of the skins relate to the device and the method for detecting the butt joint positions of all stringers after the butt joint assembly of the aircraft panels is completed. Technical proposal An aircraft panel butt joint positioning detection method comprises the following steps: Step 1, firstly, determining detection precision and detection area aiming at a part to be detected. Measuring the assembling digital model of the wall plate in the region to be detected, loading two butt joint wall plates into the assembling digital model simultaneously, determining the installation positions of the two positioning devices, Step 2, designing a plane cutting product digital model at the position of a positioning device selected from the product digital models of CATIA software, determining the shape of the positioning position, setting a starting detection position on the positioning device, designing a plane at the starting detection position, cutting the product digital model, and determining the shape of the butted joint of the wall plates. Determining the position of the residual detection device according to the established distance of the positioning surface, designing a plane, cutting a digital model of a product, and determining the shape of the butt joint of each detection position. And 3, projecting the stringer axis position and the skin butt joint position in the plane designed by each detection device. And (3) marking each detection position by using a line formed by cutting a digital model by a plane of the projection positioning device. And projecting lines formed by plane cutting digital models of all the detection devices, stringer positions and skin butt joint positions projected on all the detection devices, and carrying out data processing on the corresponding lines in CAD software. Step 4, cutting the graph formed by the projection planes of the positioning device and the detection device by using a laser cutting machine to obtain a detection device object; And 5, installing a positioning device on the wall plate subjected to butt joint, installing a detection device according to the station surface scribing on the positioning device, and checking the coincidence degree of the butt joint wall plate on the detection device. Further, step 6 is further included, if the degree of coincidence between the butt joint wallboard and the detection device is good in step 6, the positioning precision of the butt joint wallboard is proved to be in accordance with the detection requirement, and otherwise, the butt joint precision of the wallboard is not in accordance. Further, the greater the change in shape of the docking station assembly, the higher the required detection accuracy, the denser the detection device arrangement, the larger the detection area, and the more detection devices required. Further, for ease of installation, the plane of the positioning device design may be determined by the stringer surface or the surface of the part installed in the panel. Further, the initial detection position in the step 2 is specifically a position 50mm away from the edge of the area of the assembly to be detected. Further, marking each detection position is specifically performed by processing a wire in CAD software to obtain a mark of the detection position. Furthermore, in the step 4, the positioning device and the detection device are both made of 2MM steel plates. Further, in order to improve the detection accuracy, it is possible to appropriately increase the density of the detection device design or to increase the number of marks per detection de