Strategic paradigms for manufacturing management: identification, prescription and cases study in the shoes industry

Paradigmas Estratégicos de Gestão da Manufatura (PEGEMs) são modelos/padrões estratégicos e integrados de gestão adequados a certas situações do mercado e propõem-se a auxiliar as empresas a alcançarem determinado(s) objetivo(s) de desempenho. Os PEGEMs tratados neste artigo são: Manufatura em Massa Atual (MMA), Manufatura Enxuta (ME), Manufatura Responsiva (MR), Customização em Massa (CM) e Manufatura Ágil (MA). Diante dessa diversidade de paradigmas, propõe-se um método para identificar o PEGEM que uma empresa está utilizando e o PEGEM mais adequado para ela. Além disso, o método proposto também é útil para: avaliar e melhorar o grau de integração entre estratégias e ações na manufatura; mostrar empresas sem foco estratégico; mostrar erros no posicionamento estratégico da empresa; auxiliar empresas a escolher ferramentas, metodologias e tecnologias de acordo com seus objetivos de desempenho. Tal proposta é ilustrada por meio de sua aplicação em um estudo de múltiplos casos na indústria de calçados brasileira.Paradigmas Estratégicos de Gestión de Manufactura (PEGEMs) son modelos/estándares estratégicos e integrados de gestión adecuados a determinadas situaciones del mercado, que se proponen a auxiliar las empresas a alcanzar determinado(s) objetivo(s) de desempeño. Los PEGEMs tratados en este artículos son: Manufactura en Masa Actual (MMA), Manufactura Esbelta (ME), Manufactura Responsiva (MR), Customización en Masa (CM) y Manufactura Ágil (MA). Ante esta diversidad de paradigmas, se propone un método para identificar el PEGEM que una empresa está utilizando y el PEGEM más adecuado para ella. Además, el método propuesto también es útil para: evaluar y mejorar el grado de integración entre estrategias y acciones en la manufactura; mostrar empresas sin foco estratégico; señalar errores en el posicionamiento estratégico de la empresa; auxiliar empresas a elegir herramientas, metodologías y tecnologías de acuerdo con sus objetivos estratégicos. Esta propuesta es ilustrada por medio de su aplicación en una investigación de casos múltiples en la industria de calzados brasileña.Strategic Paradigms for Manufacturing Management (SPMM) are strategic, integrated and market-driven management models, which guide companies to accomplish specific goals. The SPMM attended in this paper are: Current Mass Manufacturing (CMM), Lean Manufacturing (LM), Responsive Manufacturing (RM), Mass Customization (MC) and Agile Manufacturing (AM). Due to such diversity this paper proposes a method to identify the SPMM being used in a company and the most suitable SPMM. Moreover the method proposed is also useful to: evaluate and improve the integration degree between strategies and operation in manufacturing; point out companies without strategic focus; show mistakes in the company strategic attitude; help companies to choose tools, methodologies and technologies according to their strategic goals. The method proposed is illustrated in a multiple case study in the Brazilian shoes industry

Conception of a production control system for cell manufacturing

Este trabalho visa integrar todas as atividades de programação da produção, dentro do contexto de um sistema de controle da produção concebido para operar na manufatura celular, e em particular na manufatura celular semi repetitiva. A estrutura conceitual para se obter a integração repousa numa modificação da estrutura decisória do controle da produção proposta por Burbidge, e na recente abordagem dos sistemas de apoio a decisão baseados em modelos, que a nosso ver fornece a flexibilidade requerida no ambiente da manufatura integrada, algo que não é possível se obter com apenas a tradicional abordagem da pesquisa operacional. O sistema proposto foi concebido em 3 módulos (nível de produto final, de componentes e de operações), havendo em cada um deles contribuições relevantes para a literatura especializadaThis dissertation intends to integrate all production scheduling activities in the context of a Production Control System designed to operate in a Cellular Manufacture and in particular, in the semi-repetitive cellular manufacture. The conceptual framework to obtain the activity integration stands on a modification of the Production Control decision structure proposed by Burbidge, and in the recent approach of the model-based Decision Support Systems. Such a framework is able to provide the required flexibility in the Integrated Manufacturing environment, which is not possible to get by only the traditional Operations Research approach. The proposed Production Control System was designed with three modules, that is final products, components and operations levels. In each one of them, we present relevant contributions to the specialized literatura

Strategic Paradigms for Manufacturing Management (Spmm): Key Elements and Conceptual Model

This paper proposes a new concept in Manufacturing Management: Strategic Paradigm for Manufacturing Management (SPMM). This new concept aims to deal with the 20th century manufacturing management paradigms in a comparative and integrated way. To accomplish this goal four key elements are identified: drivers (market conditions that require SPMM implementation); performance objectives (representing the operation’s strategic objectives that each SPMM gives priority to); principles (the SPMM fundamentals) and enablers (the tools, technologies and methods of each SPMM). The main contributions of this paper are: i) the presentation of a conceptual model that relates the SPMM to operation’s strategic objectives; and, ii) the possibility of allowing comparisons and analyses of the manufacturing paradigms, facilitating the study and practical application of these paradigms. The proposed model deals with strategic questions in the Production/Operations Management context in a very pragmatic way. To illustrate the proposed model five case examples are presented.

Avaliação do grau de prioridade e do foco do Planejamento e Controle da Produção (PCP): modelos e estudos de casos Assessment of the priority and focus of Production Planning and Control (PPC): models and case studies

Neste artigo propomos um modelo que sugere qual o grau de prioridade que a empresa deve dar à sua função Planejamento e Controle da Produção (PCP) e outro que sugere qual o foco decisório que deve ter o PCP [foco em planejamento, foco em programação ou foco em ambos (planejamento e programação)]. Ambos os modelos são validados por meio de estudos de casos em 10 importantes empresas industriais brasileiras.Two models are proposed in this paper: the first suggests the degree of priority a company should give to Production Planning and Control (PPC), while the second suggests the decision-making focus PPC should concentrate on, i.e., planning, scheduling, or both planning and scheduling. The two models are validated through case studies of ten major Brazilian manufacturers

Integrating Materials Flow, Production Control and Quality Control: a Proposal and Case Study

This paper presents a proposal for integrating materials flow, production control and quality control. The proposal is based on three principles: that materials flow must be as simple as possible, that a production control system must be compatible with the production system and that the production pace must take account of demand, capacity and quality. The paper examines the dependent relationship between Production Control (PC) and Quality Control (QC) since this relationship provides opportunities for improving manufacturing performance. A case study performed at the world’s largest pencil factory suggests that the proposal contributes effectively to operations management at the shop<br />floor level

Sistema de apoio à decisão para programação da produção em fundições de mercado Decision support system for production scheduling in steel casting foundries

Este trabalho tem por objetivo propor um sistema de apoio à decisão (SAD) para elaboração da programação da produção em fundições que trabalham com produtos personalizados sob encomenda, também conhecidas como fundições de mercado. Para isto, o ambiente produtivo das fundições de mercado é estruturado por meio do sistema de controle da produção conhecido como PBC, sendo propostas, também, três modelagens decisórias viáveis para o processo de programar a produção: um modelo de programação inteira binária, um modelo heurístico clássico de busca em árvore, conhecido como beam search e um modelo meta-heurístico baseado em algoritmos genéticos. Este trabalho apresenta ainda os resultados experimentais obtidos com a aplicação dos modelos decisórios e a análise da adequação do SAD proposto em fundições de mercado representativas do interior do Estado de São Paulo.This work proposes a Decision Support System (DSS) for production scheduling in steel casting foundries. To this end, the productive environment of these foundries is organized by means of a production control system known as Period Batch Control (PBC). Three viable decision models for production scheduling are proposed: a binary integer programming model, a model based on classical approximation methods, specifically the method known as beam search, and a model based on a meta-heuristic known as genetic algorithm. Also presented here are the experimental results obtained from the application of the three models and an analysis of the fitness of the proposal for eight representative steel casting foundries in the state of São Paulo, Brazil

Binary integer programming formulations for scheduling in market-driven foundries

This paper describes the development and solution of binary integer formulations for production scheduling problems in market-driven foundries. This industrial sector is comprised of small and mid-sized companies with little or no automation, working with diversified production, involving several different metal alloy specifications in small tailor-made product lots. The characteristics and constraints involved in a typical production environment at these industries challenge the formulation of mathematical programming models that can be computationally solved when considering real applications. However, despite the interest on the part of these industries in counting on effective methods for production scheduling, there are few studies available on the subject. The computational tests prove the robustness and feasibility of proposed models in situations analogous to those found in production scheduling at the analyzed industrial sector. (C) 2010 Elsevier Ltd. All rights reserved