Wang, Haixia and Ceglarek, Dariusz. (2009) Variation propagation modeling and analysis at preliminary design phase of multi-station assembly systems. Assembly Automation, Vol.29 (No.2). pp. 154-166. ISSN 0144-5154

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Abstract

Purpose - Dimensional variation management is a major challenge in multi-station sheet metal assembly processes involving complex products such as automotive body and aircraft fuselage assemblies. Very few studies have explored it at a preliminary design phase taking into consideration effects of part deformation on variation propagation, since early design phase involves the development of imprecise design models with scant or incomplete product and process knowledge. The objective of this paper is to present a variation model which can be built into the preliminary design phase taking into consideration all of the existing interactions between flexible parts and tools in multi-station sheet metal assembly process. Design/methodology/approach - The paper addresses this problem by first, presenting a beam-based product and process model which shares the same data structure of the B-Rep CAD models, and therefore can be embedded in CAD systems for automatic product skeletal design; second, determining the influence of part deformation, for various, differing joining and releasing schemes, on variation propagation; and third, utilizing this information to generate a vector-based variation propagation model for multistation sheet metal assemblies. Findings - This paper presents a beam-based product and process model which shares the same data structure of the B-Rep CAD models, and therefore can be embedded in CAD systems for automatic product skeletal design; determines the influence of part deformation, for various, differing joining and releasing schemes, on variation propagation; and utilizes this information to generate a vector-based variation propagation model for multistation sheet metal assemblies. Originality/value - A truck cab assembly is presented to demonstrate the advantages of the proposed model over the state-of-the-art approach used in industry for sheet metal assemblies.

Item Type:	Journal Article
Subjects:	T Technology > TL Motor vehicles. Aeronautics. Astronautics T Technology > TS Manufactures
Divisions:	Faculty of Science > WMG (Formerly the Warwick Manufacturing Group)
Journal or Publication Title:	Assembly Automation
Publisher:	Emerald Group Publishing Ltd.
ISSN:	0144-5154
Date:	2009
Volume:	Vol.29
Number:	No.2
Number of Pages:	13
Page Range:	pp. 154-166
Identification Number:	10.1108/01445150910945606
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
URI:	http://wrap.warwick.ac.uk/id/eprint/27952

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