公开(公告)号：US12186970B2

公开(公告)日：2025-01-07

申请号：US18776250

申请日：2024-07-18

Applicant: NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS

Inventor： Jinghua Zheng ,  Yiwei Chen ,  Congze Fan ,  Wenzhe Song ,  Yaxing Song ,  Zhongde Shan

IPC: B29C53/80 ,  B29C33/00 ,  B29C53/56

Abstract: A multi-arm forming device for space on-orbit composite braiding is provided. Through the rotary movement of a combination of circularly arranged mechanical arm-type laying apparatuses relative to a mold, a plurality of hot press laying heads are controlled together to implement high-efficiency and high-freedom winding and braiding formation of a composite member. The retraction and expansion deformation of the gasbag mold is achieved by inflating and deflating based on design, and the overall device is lightened by switching its structural volume in an operating/non-operating state, thereby achieving the purpose of facilitating the lift-off of rockets and the demolding, repair and weight reduction of winding and braiding structural members for operation in space. Additionally, gas in a gasbag can be used as emergency kinetic energy for the movement and attitude adjustment of the overall device in space. High-quality and efficient winding and braiding formation of composites in space are achieved ultimately.

公开(公告)号：US12011882B1

公开(公告)日：2024-06-18

申请号：US18520581

申请日：2023-11-28

Applicant: NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS

Inventor： Congze Fan ,  Wenzhe Song ,  Zhongde Shan ,  Yiwei Chen ,  Jinghua Zheng ,  Yaxing Song

IPC: G06T15/00 ,  B29C64/393 ,  B33Y50/02 ,  G06F30/10 ,  G06F113/10

CPC classification number: B29C64/393 ,  B33Y50/02 ,  G06F30/10 ,  G06F2113/10

Abstract: A path planning method based on dynamic contour offset discretization and for spatial curved-surface printing is provided. Firstly, transversal equal slicing is carried out on a target model, and single/double contours are labeled; secondly, central slicing is carried out on the model, curvature contours are discretized, feature values of contour offsets of slice layers are calculated on the basis of a surface contour curvature of the model, and dynamic offset filling for inner contours of horizontal slices is realized; then longitudinal equal slicing is carried out on the slices, and spatial discrete points of the target model are obtained; and finally, virtual double contours are constructed for the single contours, and labeling processing for the discrete points is carried out, so that a discretized three-dimensional spatial equidistant lattice of the target model is obtained.