jaue2021-005: A Path Generation Method of 3D Spatial Printing for Multi-Branch Structure

Abstract

High stiffness-to-weight ratio architecture structure of intelligent and high precision form can be achieved by 3D spatial printing nowadays. Lattice-based 3D printing methods have been developed and implemented in some physical constructions. However, the conventional printing path generation methods have limitations to perform on the multi-branch geometry due to the design and printing difficulty of the intersection and the overhanging part. Thus, the whole printing process of a multi-branch geometry in 3D has to be subdivided to make sure there is no overhanging part with specific large angle, and different branches have to be printed as separated parts. In this article, 3D spatial printing structure generated directly from 3D volume and reconstructed by 3D mesh is proposed to address this limitation. Correspondingly, a path finding method is presented for multi-branch shape as an integration. By adopting this method, there will be less limitations on the continuous printing path of multi-branch geometry to reduce subdivisions of an architecture structure. High degree of freedom construction will be achieved consequently, with much more promoted integrity and stiffness.