CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
supported by the sibling associations ACADIA, CAADRIA, eCAADe, SIGraDi, ASCAAD and CAAD futures

PDF papers
id ecaade2017_210
authors Jimenez Garcia, Manuel, Soler, Vicente and Retsin, Gilles
year 2017
title Robotic Spatial Printing
source Fioravanti, A, Cursi, S, Elahmar, S, Gargaro, S, Loffreda, G, Novembri, G, Trento, A (eds.), ShoCK! - Sharing Computational Knowledge! - Proceedings of the 35th eCAADe Conference - Volume 2, Sapienza University of Rome, Rome, Italy, 20-22 September 2017, pp. 143-150
summary There has been significant research into large-scale 3D printing processes with industrial robots. These were initially used to extrude in a layered manner. In recent years, research has aimed to make use of six degrees of freedom instead of three. These so called "spatial extrusion" methods are based on a toolhead, mounted on a robot arm, that extrudes a material along a non horizontal spatial vector. This method is more time efficient but up to now has suffered from a number of limiting geometrical and structural constraints. This limited the formal possibilities to highly repetitive truss-like patterns. This paper presents a generalised approach to spatial extrusion based on the notion of discreteness. It explores how discrete computational design methods offer increased control over the organisation of toolpaths, without compromising design intent while maintaining structural integrity. The research argues that, compared to continuous methods, discrete methods are easier to prototype, compute and manufacture. A discrete approach to spatial printing uses a single toolpath fragment as basic unit for computation. This paper will describe a method based on a voxel space. The voxel contains geometrical information, toolpath fragments, that is subsequently assembled into a continuous, kilometers long path. The path can be designed in response to different criteria, such as structural performance, material behaviour or aesthetics. This approach is similar to the design of meta-materials - synthetic composite materials with a programmed performance that is not found in natural materials. Formal differentiation and structural performance is achieved, not through continuous variation, but through the recombination of discrete toolpath fragments. Combining voxel-based modelling with notions of meta-materials and discrete design opens this domain to large-scale 3D printing. Please write your abstract here by clicking this paragraph.
keywords discrete; architecture; robotic fabrication; large scale printing; software; plastic extrusion
series eCAADe
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100%; open Retsin, GR and Jimenez Garcia, MJG (2016) Find in CUMINCAD Discrete Computational Methods for Robotic Additive Manufacturing , Proceedings of Acadia 2016, Ann Arbor

100%; open Retsin, GR, Jimenez Garcia, MJG and Soler, VS (2017) Find in CUMINCAD Discrete Computation for additive manufacturing , Fabricate 2017, Stuttgart, pp. 178-183

100%; open Sanchez, JS (2014) Find in CUMINCAD Polyomino - Reconsidering Serial Repetition in Combinatorics , Proceedings of ACADIA 14: Design Agency, Los Angeles

100%; open Ward, JW (2010) Find in CUMINCAD Additive Assembly of Digital Materials , Ph.D. Thesis, Massachusetts Institute of Technology

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