Integrated cutting machine programming and lot sizing in furniture industry

• Main Author: Santos, Silvia Grandi dos
• Publication Date: 2011
• Other Authors: Araujo, Silvio Alexandre de [UNESP], Rangel, Maria do Socorro Nogueira [UNESP]
• Format: Article
• Language: eng
• Source: Repositório Institucional da UNESP
• Download full: http://www.podesenvolvimento.org.br/inicio/index.php?journal=podesenvolvimento&page=article&op=view&path%5B%5D=37; http://hdl.handle.net/11449/122553
• topic: Problema de dimensionamento de lotes; Problema de corte de estoque; Problema integrado; Indústria moveleira; Lot sizing problem; Cutting stock problem; Integrated problem; Furniture industry

In this paper a mathematical model that combines lot-sizing and cutting-stock problems applied to the furniture industry is presented. The model considers the usual decisions of the lot sizing problems, as well as operational decisions related to the cutting machine programming. Two sets of a priori generated cutting patterns are used, industry cutting patterns and a class of n-group cutting patterns. A strategy to improve the utilization of the cutting machine is also tested. An optimization package was used to solve the model and the computational results, using real data from a furniture factory, show that a small subset of n-group cutting patterns provides good results and that the cutting machine utilization can be improved by the proposed strategy.