A Compound Arm Approach to Digital Construction
We introduce a novel large-scale Digital Construction Platform (DCP) for on-site sensing, analysis, and fabrication. The DCP is an in-progress research project consisting of a compound robotic arm system comprised of a 5-axis Altec hydraulic mobile boom arm attached to a 6-axis KUKA robotic arm. Akin to the biological model of human shoulder and hand this compound system utilizes the large boom arm for gross positioning and the small robotic arm for fine positioning and oscillation correction respectively. The platform is based on a fully mobile truck vehicle with a working reach diameter of over 80 feet. It can handle a 1,500 lb lift capacity and a 20 lb manipulation capacity. We report on the progress of the DCP and speculate on potential applications including fabrication of non-standard architectural forms, integration of real-time on-site sensing data, improvements in construction efficiency, enhanced resolution, lower error rates, and increased safety. We report on a case study for platform demonstration through large-scale 3D printing of insulative formwork for castable structures. We discuss benefits and potential future applications.
KeywordsDigital fabrication Robotics Large-scale fabrication 3D printing Insulated formwork Digital construction platform (DCP)
We would like to acknowledge Altec Industries for their support of this project and technical assistance. In addition, this research was supported in part by an NSF EAGER grant award #1152550 “Bio-Beams: Functionally Graded Rapid Design and Fabrication”. We would like to thank the Mediated Matter group and the MIT Media Lab for their kind help and support. Specifically, we would like to acknowledge Ali AlShehab, Benjamin Jennet, Dr. David Wallace, Dr. Franz Hover, Hannah Barrett, Sergio Falcon, Will Bosworth and Xiaoyue Xie for their assistance with this project.
- Bonwetsch T, Gramazio F et al (2007) Digitally fabricating non-standardised brick walls. In: Proceedings of ManuBuild, 1st international conference, RotterdamGoogle Scholar
- Bonwetsch T, Kobel D et al (2006) The informed wall: applying additive digital fabrication techniques on architecture. In: Proceedings of ACADIA, Louisville, KentuckyGoogle Scholar
- Callieri M, Fasano A et al (2004) RoboScan: an automatic system for accurate and unattended 3D scanning. In: IEEE 2nd international symposium on 3D data processing, visualization and transmissionGoogle Scholar
- Edison T (1917) Apparatus for the production of concrete structures. Patent No. 1326854Google Scholar
- Gramazio F, Kohler M (2008) Digital materiality in architecture. Lars Muller Publishers, BadenGoogle Scholar
- Keating S (2012) Renaissance robotics: novel applications of multipurpose robotic arms spanning design fabrication, utility, and art. M.Sc. thesis, Mechanical Engineering, Massachusetts Institute of TechnologyGoogle Scholar
- Keating S, Oxman N (2012) Immaterial robotic fabrication. In: Proceedings of RobArch: robotic fabrication in architecture, art and designGoogle Scholar
- Khoshnevis B, Hwang D et al (2006) Mega-scale fabrication by contour crafting. Int J Ind Syst Eng 1(3):301–320Google Scholar
- Nise N (2011) Control systems engineering. Wiley, HobokenGoogle Scholar
- Saulters JD, Scarr RH (1985) Method and apparatus for controlling the position of a hydraulic boom. Patent No. 4514796AGoogle Scholar
- Yong Y, Rydberg K, An L (2005) An improved pi control for active damping of a hydraulic crane boom system. In: Proceedings from the international society for optical engineeringGoogle Scholar