A relational analysis of drivers and barriers of lean manufacturing

Leanness assessment of a complex assembly line using integrated value stream mapping: a case study

Purpose

This paper proposes an integrated value stream mapping (VSM) for a complex assembly line to improve the leanness of a complex automotive component manufacturing organization.

Design/methodology/approach

This study depicts the application of VSM at the case organization, where top management is concerned about the challenges of higher cycle time and lower productivity. Gemba walks were conducted to establish the concept of “walk the flow, create the flow” along the assembly line. The multi-hierarchical cross-functional team developed the current value stream map to know the “as-is” state. Then, the team analysed the current VSM and proposed the future VSM for the “to-be” state.

Findings

The integrated VSM shows different processes and work cells, various wastes, non-value-added activities, cycle time, uptime and the material and information flows for both products of the assembly line on the same map. The integrated VSM reduced cycle time, non-value-added activities, work in process inventory and improved line efficiency and production per labour hour for both the products, simultaneously.

Research limitations/implications

The limitation of the study is that the study focussed only on the application of VSM for one complex assembly only. Future research may be conducted using the developed integrated VSM approach in other complex production environments.

Practical implications

Managers can identify and reduce system waste by incorporating the concept of integrated VSM in a complex production or assembly environment where two or more products are being manufactured/assembled with low similarity.

Originality/value

The application of VSM for assembly lines is highly challenging because of merging flows, a large number of child parts in the lines and assembly of more than one product on the same line.

Agility enhancement through agile manufacturing implementation: a case study

Purpose

Dynamic business environment has a deep influence on production and management related exercises. In order to remain competitive, organization needs to coordinate with continuous and unpredictable changes taking place in the market. Globalization of markets is posing competitive pressure on firms, which leads them to adopt a new manufacturing paradigm termed agile manufacturing (AM). The purpose of the present case study is to explore the contribution of AM towards agility and productivity enhancements in an Indian manufacturing company.

Design/methodology/approach

The study is carried out at forging industry which has been assessed on certain key business performance indicators. The assessment highlighted various issues which had scope for improvement to enhance the agility of the organization. Therefore, a phase-wise implementation of AM is carried to reap the significant benefits as a result of AM implementation in the case study company. The methodology has been applied to decrease the inline rejection, increase the productivity and responsiveness of the organization.

Findings

The results revealed an improvement in performance score from 77.5 to 100. Further, an increase in productivity and reduction in line rejection has been achieved through the systematic implementation of AM.

Practical implications

The study highlights the contributions of strategic AM implementation to organizational performance and highlights the need for successful management of AM practices for establishing sustained performance of the organization.

Originality/value

The contribution of the present work is the phase-wise implementation of AM in the case studied company.