Multi operation modes of 4-CRU parallel mechanism for 3D-printing building

Putrayudanto, P, Nurahmi, L and Wei, G ORCID: https://orcid.org/0000-0003-2613-902X 2020, Multi operation modes of 4-CRU parallel mechanism for 3D-printing building , in: Asian Conference on Mechanism and Machine Science 2018, 17th-20th December 2018, Bengaluru, India.

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Abstract

This paper deals with the operation modes analysis of a 4-CRU parallel mechanism for 3D printing building as a new technology for constructing the sustainable houses. The analysis is based upon an algebraic approach, namely the Euler parameters quaternion and primary decomposition. The 4-CRU parallel mechanism is composed of rectangular base and platform that are connected by four identical CRU legs. Each leg consists of cylindrical (C), revolute (R) and universal (U) joints. Dimensions of rectangular base and platform are the design parameters and can be varied. Initially, the parallel mechanism is described by a set of four constraint equations that define the motion of CRU legs. Then the primary decomposition is computed over a set of constraint equations and it turns out that the 4-CRU parallel mechanism has three distinct operation modes, namely the Schönflies mode, the reversed Schönflies mode and additional modes. The Degree-Of-Freedom (DOF) of the additional mode can be either 4-DOF or even degenerate into 3-DOF, depending on the ratio of the platform to the base. This additional mode is also a transition mode for the mechanism to switch from the Schönflies mode to the reversed Schönflies mode, and vice versa. This condition makes the 4-CRU parallel mechanism become reconfigurable manipulator as long as the additional modes exist. A mock-up of 4-CRU parallel mechanism has been fabricated to depict the Schönflies mode, the reversed Schönflies mode and the additional modes performed by the moving platform.

Item Type: Conference or Workshop Item (Paper)
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: Mechanism and Machine Science : select proceedings of Asian MMS 2018
Publisher: Springer
Series Name: Lecture Notes in Mechanical Engineering
ISBN: 9789811544767 (print); 9789811544774 (online)
ISSN: 2195-4356
Related URLs:
Funders: Royal Academy of Engineering
Depositing User: USIR Admin
Date Deposited: 05 Oct 2020 07:45
Last Modified: 05 Oct 2020 07:45
URI: http://usir.salford.ac.uk/id/eprint/58468

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