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公开(公告)号：US11308632B2
公开(公告)日：2022-04-19
申请号：US17169513
申请日：2021-02-07
发明人： Jun Wang , Zeyong Wei , Qian Xie
摘要： Disclosed herein is a code point-driven three-dimensional (3D) point cloud deformation method. In the method, movable code points and fixed code points are respectively pasted on a moving structure and a static structure. Reference poses of the movable code points and fixed code points are obtained by a dual-camera measurement system, and a 3D point cloud reference model containing the moving structure and the static structure is obtained by 3D laser scanning. A transformation matrix of each code point is calculated, and a real-time point cloud model is established based on the transformation matrix to complete the real-time and dynamic measurement of the moving structure.
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公开(公告)号：US11787051B2
公开(公告)日：2023-10-17
申请号：US18058845
申请日：2022-11-25
发明人： Jun Wang , Anyi Huang , Cheng Yi , Zeyong Wei , Hao Yan
CPC分类号： B25J9/1664 , B25J9/1694 , B25J11/0055
摘要： A method for automatically processing a structure-reinforcing member of an aircraft, including: (S1) acquiring, by a handheld laser scanner, data of an area to be reinforced of the aircraft; (S2) controlling a robotic arm to automatically grab the reinforcing member for automatic scanning; (S3) setting a cutting path in a computer aided design (CAD) digital model followed by registration with real data to obtain an actual cutting path, and cutting the reinforcing member; (S4) controlling the robotic arm to guide a cut reinforcing member to a scanning area for automatic scanning; and (S5) subjecting point cloud data of the cut reinforcing member and the area to be reinforced to virtual assembly and calculating a machining allowance to determine whether an accuracy requirement is met; if yes, ending a task; otherwise, grinding the reinforcing member automatically, and repeating steps (S4)-(S5).
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公开(公告)号：US11543795B2
公开(公告)日：2023-01-03
申请号：US17026262
申请日：2020-09-20
发明人： Jun Wang , Zeyong Wei , Honghua Chen
IPC分类号： G05B19/402 , G01M5/00
摘要： The present invention relates to an airplane structure stiffener repair method based on measured data guidance. The method includes: respectively measuring point cloud data on a surface of a structure stiffener and point cloud data on a surface of a to-be-assembled position of a body; respectively extracting all assembly plane features in two point cloud data based on an RANSAC algorithm; performing pre-alignment according to the plane features; performing accurate alignment based on a signed distance constraint according to repair tolerance requirements; and calculating a repair allowance, and generating a machining path to serve as an accurate machining basis. According to the method in the present invention, a repair amount can be accurately calculated by virtue of an alignment algorithm of the signed distance constraint, and an envelope relationship during model matching is met.
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