Li, Y. G., Liu, H. T., Zhao, X. M., Huang, Tian and Chetwynd, D. G. (Derek G.), 1948-. (2010) Design of a 3-DOF PKM module for large structural component machining. Mechanism and Machine Theory, Vol.45 (No.6). pp. 941-954. ISSN 0094-114X

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Abstract

This paper presents a novel 3-DOF PKM module named the A3 head that can be employed to form a 5-axis manufacturing cell for large structural component machining. The architecture behind the A3 head is a 3-RPS parallel mechanism. A semi-analytic stiffness model of the A3 head is formulated by taking into account the component compliances associated with actuations and constraints. With the dimensionless treatment of the stiffness model, a global performance index is proposed for minimization subject to a set of appropriate constraints generated as a result of in-depth discussion, leading to only one of four geometric parameters to be determined for achieving a compact, lightweight yet rigid design. Stiffness evaluation of the optimized A3 head is carried out throughout the workspace and comparisons are made with those evaluated by finite element analysis at the reference configuration. (C) 2010 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Subjects:	T Technology > TJ Mechanical engineering and machinery
Divisions:	Faculty of Science > Engineering
Journal or Publication Title:	Mechanism and Machine Theory
Publisher:	Pergamon-Elsevier Science Ltd.
ISSN:	0094-114X
Official Date:	June 2010
Volume:	Vol.45
Number:	No.6
Number of Pages:	14
Page Range:	pp. 941-954
Identification Number:	10.1016/j.mechmachtheory.2010.01.008
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	National Science Foundation of China, Ministry of Science and Technology of China
Grant number:	50535010, 50775158, 2006BAF01B00
URI:	http://wrap.warwick.ac.uk/id/eprint/6150

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