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Despatching and Dynamic Machine Loading in a Wire Rope Factory A Case Study

Despatching and Dynamic Machine Loading in a Wire Rope Factory A Case Study Scheduling of production in a wire rope factory is complicated byseveral features a the simultaneous requirement for two types oflimited resource, machines and bobbins b multistage production withnormally two or three stranding and one or two closing operations cqueuing at the closing machines the typical job splits into subbatcheswhen passing from the stranding to the closing operation thesesubbatches usually queue at the closing operations which, being fasterthan stranding operations, generally receive work from several queuesd alternative choices in the selection of machines and bobbin sizesfor any given stranding or closing operation e the presence of randomelements in the timing of machine breakdowns and repairs. In this casestudy factory in a developing country, the existing control ofproduction flows was ad hoc rather than according to a specifiedmethod. The management needed to know whether a scientific schedulingapproach could significantly improve the low utilisation of machines. Asa first attempt a strategy was synthesised based on wellknown conceptsfrom the theory of scheduling in static and dynamic environments, takinginto consideration certain effects of the complicating factors mentionedabove. Simulation revealed that a significant improvement was possible. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Operations & Production Management Emerald Publishing

Despatching and Dynamic Machine Loading in a Wire Rope Factory A Case Study

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References (8)

Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0144-3577
DOI
10.1108/01443579010137762
Publisher site
See Article on Publisher Site

Abstract

Scheduling of production in a wire rope factory is complicated byseveral features a the simultaneous requirement for two types oflimited resource, machines and bobbins b multistage production withnormally two or three stranding and one or two closing operations cqueuing at the closing machines the typical job splits into subbatcheswhen passing from the stranding to the closing operation thesesubbatches usually queue at the closing operations which, being fasterthan stranding operations, generally receive work from several queuesd alternative choices in the selection of machines and bobbin sizesfor any given stranding or closing operation e the presence of randomelements in the timing of machine breakdowns and repairs. In this casestudy factory in a developing country, the existing control ofproduction flows was ad hoc rather than according to a specifiedmethod. The management needed to know whether a scientific schedulingapproach could significantly improve the low utilisation of machines. Asa first attempt a strategy was synthesised based on wellknown conceptsfrom the theory of scheduling in static and dynamic environments, takinginto consideration certain effects of the complicating factors mentionedabove. Simulation revealed that a significant improvement was possible.

Journal

International Journal of Operations & Production Management – Emerald Publishing

Published: Mar 1, 1990

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