Direct Ink Writing of cylindrical lattice structures: A proof of concept

Open Ceramics

Giorgia Franchin¹  Kai Huang²  Giovanni Boschetti³  Hamada Elsayed³  Lisa Biasetto⁴  Paolo Colombo⁴ 

[1] Corresponding author.;Refractories, Ceramics and Building Materials Department, National Research Centre, El Buhouth Str., 12622, Cairo, Egypt;Dipartimento di Ingegneria Industriale, Università di Padova, Via Marzolo 9 35131 Padova, Italy;Dipartimento di Tecnica e Gestione Dei Sistemi Industriali, Università di Padova, Stradella San Nicola 3, 36100, Vicenza, Italy;

关键词: Additive-lathe;    4 axis printing;    Robotic arm;    Polymer-derived ceramics;   

DOI  :  

来源: DOAJ

【 摘 要 】

Printing curved lattice structures is a demanding task due to the current limitations in standard 3-axes printing technologies available in the market: a removable support structure often needs to be printed, and printing layer-by-layer to generate an inclined surface causes a significant stair-stepping effect, affecting the surface quality and leading to anisotropy in physical properties. To overcome these limitations, the connection of the printing unit to a >3-axes robotic arm seems to be a feasible solution for printing polymeric based structures, as demonstrated by previous works reported in the literature. In this paper, a method for printing by Direct Ink Writing cylindrical lattice structures is presented: three different materials, SiOC amorphous ceramic, Ti6Al4V-based composite and CaSiO3 bioceramic, are printed by the combination of extrusion of an elastomeric ink and a mandrel connected to a robotic arm. The method shows high potential for printing ceramic and metal cylindrical lattice structures and their combination.

【 授权许可】

Unknown