公开(公告)号：US20250045495A1

公开(公告)日：2025-02-06

申请号：US18735168

申请日：2024-06-05

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Lichao Zhang ,  Senlin Wang ,  Zihua Zhang ,  Jinxin Wu ,  Si Chen ,  Jiang Huang

IPC: G06F30/27 ,  B29C64/386 ,  B33Y50/00 ,  G06F30/17 ,  G06F113/10

Abstract: The disclosure belongs to the technical field related to additive manufacturing model preprocessing, and discloses a field-based additive manufacturing digital model feature identification and extraction method and device, the method can convert the digital model represented by the facet into a signed distance field and introduce a simulated physical field of the forming/service simulation, the feature distance field after the frequency domain analysis filtering, and the geometric feature field obtained by the multi-precision convolution unit analysis according to the requirement of feature to be identified, then, multiple fields are combined to realize feature classification determination and labeling of features, and finally feature extraction is completed based on field data and isosurface and isoline reconstruction algorithms.

公开(公告)号：US20250014284A1

公开(公告)日：2025-01-09

申请号：US18740495

申请日：2024-06-11

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Lichao Zhang ,  Si Chen ,  Senlin Wang ,  Jiang Huang ,  Jinxin Wu ,  Zihua Zhang

IPC: G06T17/20 ,  B33Y50/00

Abstract: Disclosed are free-form curved surface slicing method and device based on implicit model, includes following: (1) Using mesh model of layered curved surface to intersect with implicit model of a part to be manufactured to obtain contour lines; (2) Comparing rules for intersecting contour lines and meshes within mesh, mesh coordinates are substituted into implicit model, obtaining a position of an intersection point of contour lines in corresponding mesh; (3) Using interpolation method to calculate intersection coordinates of contour lines and mesh boundary, specifying storing sequence of interpolation points, storing intersection points of discrete line segments in mesh; (4) Merging unordered point sets obtained to establish topological relationship between point sets and discrete line segments, each line segment corresponds to two endpoints, each endpoint corresponds to two line segments, based on above, all points traversed will be connected into complete and ordered profile, that is sliced profile.