Improving manual assembly lines devoted to complex electronic devices by applying Lean tools

Correia, Damásio; Silva, Francisco; Gouveia, Ronny Miguel; Pereira, Teresa; Ferreira, Luı́s Pinto

doi:10.1016/j.promfg.2018.10.115

Cited by 44 publications

(19 citation statements)

References 20 publications

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“…Nabi et al 4 on the other hand undertook a time study to determine the standard minute value (SMV), which was subsequently used to eliminate bottlenecks, reduce idle time, and improve efficiency. At present, line balancing techniques have received much attention than other line efficiency and process improvement techniques 23 such as lean manufacturing (VSM), [32][33][34][35] Lean-six sigma, 36,37 Six sigma, 38 and hybrid approach (lean manufacturing and line balancing). 39 Line balancing techniques involve several constraints that have to be put into consideration for example task assignment, task precedence, cycle time, and resource constraints.…”

Section: Literature Reviewmentioning

confidence: 99%

Improvement of garment assembly line efficiency using line balancing technique

Bongomin

Mwasiagi

Nganyi

et al. 2020

Engineering Reports

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The current competitiveness of garment manufacturing industries is highly dependent on ability to improve efficiency and effectiveness of resource utilization through proper application of industrial engineering techniques such as line balancing and time study. However, very few apparel industries have comprehended industrial engineering function due to little knowledge on practical application of industrial engineering techniques. The present study aimed at balancing a trouser assembly line using the ranked positional weight technique to increase the line efficiency as well as minimize the number of workstations without violating the constraints: precedence relations, cycle time, and resource type. The empirical study was conducted at Southern Range Nyanza Limited (NYTIL) garment manufacturing facility to demonstrate the practical application of ranked positional weight line balancing technique. Results showed that ranked positional weight method is suitable only for assembly line balancing with no constraint on the resource. However, most complex garment assembly lines consist of a number of different machine types rendering ranked positional weight method practically ineffective for improving line efficiency of a complex garment assembly line. Therefore, profound line balancing using simulation-based optimization to improve the line efficiency of complex garment assembly line should be investigated. K E Y W O R D S assembly line, heuristic line balancing, line efficiency, performance indicators, ranked positional weight, resource constraints

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Section: Literature Reviewmentioning

confidence: 99%

Improvement of garment assembly line efficiency using line balancing technique

Bongomin

Mwasiagi

Nganyi

et al. 2020

Engineering Reports

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“…Integrated with the internal communication project, the intention is for the entire company to be provided with daily data for decision making. This communication is performed transversally and vertically, based on the LL project, in which communication constitutes one of the pillars for the development of employees [19][20][21] at a time when customers are increasingly more demanding [22][23][24].…”

Section: Literature Reviewmentioning

confidence: 99%

A Rapid Improvement Process through “Quick-Win” Lean Tools: A Case Study

Rodrigues

Sá

Silva

et al. 2020

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The main purpose of this paper was to introduce procedural changes based on a type of human resources management tool using Lean Leadership (LL). We sought to determine which Lean Tools (LTs) are able to promote a rapid impact on a company; namely, we aimed to determine which LTs are able to facilitate fast and positive results for companies after their implementation, thus allowing for quick wins. This study was conducted at a medium-sized Portuguese company in the metalworking sector. Results were assessed from two surveys (involving 17 people) regarding perceptions of employee awareness in the machining area for Quality, Maintenance/Equipment, Process/Products, Leadership/Management by Objectives, and Trust and Training. The surveys were conducted at the beginning of the study and at the end of a quarterly period. LTs were used over a period of three months, thus enabling changes to the company’s manufacturing processes which could lead to improved organization, orientation, consistency and viability. Three months were considered an adequate time period to measure whether the tools were effective in the production of quick wins or not. LL allowed for greater awareness of the importance of LTs, the most important feature of which is the aggregation of all of the employees’ energies, which culminates in better operational efficiency and an increase in the employees’ overall positive perceptions of their company’s principles and mindset. The introduction of LL, as well as the implementation of 10 LTs, which are considered to be Quick-Win Tools, enabled employees to improve their perceptions of their company by 6.1%. Lean tools can be implemented quickly and are easily understood by their intended users. These benefits provide additional motivation for their use and for the achievement of highly satisfactory operating results across production areas. This study aims to identify which lean tools allow companies to obtain benefits/gains quickly. This outcome is the main contribution of this study to the scientific community and to companies. A Quick Win means a rapid improvement in a short period of time. As such, lean tools that provide Quick Wins also contribute to economic development. Due to the restricted time period imposed by the main purpose of this study, statistical analysis of the results was unfeasible.

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“…Destacado como uma das práticas mais frequentes na gestão da produção e como apoio à melhoria contínua [14], o trabalho padronizado é útil para redução da variabilidade nos sistemas produtivos [15]. Esta abordagem é utilizada visando a melhoria em processos de remanufatura [16], em linha de montagem manual na indústria eletrônica [17], em linha de montagem da indústria automotiva [18] e de tratores [19], entre outros.…”

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Avanço de desempenho produtivo com a implementação do trabalho padronizado em uma célula de manufatura

Anselmo¹,

Silva

Silva³

et al. 2020

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O presente artigo detalha e avalia a implementação do trabalho padronizado em uma célula de manufatura. O objetivo do estudo é aumentar o desempenho produtivo de uma empresa brasileira do setor de implementos agrícolas. Para atender esta demanda interna de melhoria, uma pesquisa-ação foi conduzida para desenvolver um plano de atuação com base no pensamento enxuto, explorar os dados originais do ambiente estudado, propor soluções e analisar os impactos com a aplicação do trabalho padronizado no contexto investigado. Os resultados alcançados foram a redução de 53% nas atividades que não agregam valor, a redução de 30% na movimentação do operador dentro da célula, a redução de 15% de retrabalhos, a redução de 5% em paradas da célula por falta de matéria-prima, a redução de 7% no tempo de ciclo da célula e o aumento de 15 pontos percentuais na disponibilidade da célula pesquisada. De forma geral, a implementação do trabalho padronizado na empresa objeto de estudo permitiu efetivo controle do conteúdo das atividades, das sequências e dos tempos pré-determinados para a realização das tarefas. Assim como, atividades geradoras de desperdício foram identificadas e minimizadas, o fluxo do processo tornou-se visível, o treinamento da operação foi simplificado e a gestão visual no posto de trabalho foi adotada.

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Improving manual assembly lines devoted to complex electronic devices by applying Lean tools

Cited by 44 publications

References 20 publications

Improvement of garment assembly line efficiency using line balancing technique

Improvement of garment assembly line efficiency using line balancing technique

A Rapid Improvement Process through “Quick-Win” Lean Tools: A Case Study

Avanço de desempenho produtivo com a implementação do trabalho padronizado em uma célula de manufatura

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