LIFE CYCLE APPROACH TO SUPPORT TOOLING DESIGN DECISIONS

DS 68-5: Proceedings of the 18th International Conference on Engineering Design (ICED 11), Impacting Society through Engineering Design, Vol. 5: Design for X / Design to X, Lyngby/Copenhagen, Denmark, 15.-19.08.2011

Year: 2011
Editor: Culley, S.J.; Hicks, B.J.; McAloone, T.C.; Howard, T.J. & Malmqvist, J.
Author: Ribeiro, Ines; Peças, Paulo; Henriques, Elsa
Section: Design for X, Design to X
Page(s): 28-38

Abstract

The design and production of tools is a time consuming, technically difficult and expensive activity. Moreover, tool design choices highly affect the efficiency of the final parts manufacturing process in which they are used. Sometimes the least expensive tool does not lead to the least resource demand part production. It is then necessary to shift the paradigm from the cost of the tool as the main decision factor to the tool life cycle cost and even to other aspects not included in conventional costing. In this context, this research presents a new methodology to approach decision making in tooling design. It captures not only the conventional costs, but also more unattainable tooling aspects such as reliability. Moreover, as some cost items and unattainable aspects are differently valued by different stakeholders, these dissimilar perspectives are modelled and quantified in order to support a structured comparison between tooling design alternatives. The methodology will be applied to a case study in the moulding industry in order to exemplify its application.

Keywords: TOOL DESIGN LIFE CYCLE COST; PROCESS-BASED COST MODELS; INJECTION MOULDS

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