公开(公告)号：WO2020102328A1

公开(公告)日：2020-05-22

申请号：PCT/US2019/061148

申请日：2019-11-13

Applicant: 3D SYSTEMS, INC.

Inventor： BLAIN, Colin Leonard

IPC: B29C64/10 ,  B29C64/386 ,  B29C64/40 ,  B33Y10/00 ,  B33Y50/00 ,  B33Y80/00 ,  B22F5/10 ,  B29D22/00 ,  B22F3/105

Abstract: A method of manufacturing a three-dimensional article (12) includes receiving a data file, analyzing the data file, and defining a support structure. The data file defines a hollow three-dimensional article to be formed from a build material. Analyzing the data file includes identifying an internal opening (32) that converges to an apex (36) along the sequence of layers. The internal opening is at least partly defined by an inside edge (72) of the three-dimensional article. A support structure (34) is attached to the edge and closes the internal opening. The support structure includes a structural sheet portion (76) and an interface web portion (78). The structure sheet portion defines a majority of an area of the support structure except for a boundary contour (80) between the structural sheet portion and the inside edge. The interface web portion closes the boundary contour and defines a weakness contour for removing the structural portion from the three-dimensional article.