Archives > Volume 10 | Number 1 | March 2015 > pp 5–17
Advances in Production Engineering & Management
Volume 10 | Number 1 | March 2015 | pp 5–17
An implementation of lean scheduling in a job shop environment
Haider, A.; Mirza, J.
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A B S T R A C T
Globalization has demanded innovative manufacturing and continuous improvement in order to stay competitive. This need has compelled the manufacturing world to devise strategies for producing cost-efficient parts without compromising quality. The Toyota Production System was at the beginning of such initiatives. It was successful in addressing cost through elimination of non-value-added time and quality by monitoring and controlling the productions of defective parts. Lean thinking originated from the Toyota Production System and inherited its concepts and methodology. In contrast to the Toyota Production System, the implementation of lean has been proposed in almost every domain of life. In the manufacturing domain it is a common misconception that lean is suitable for mass production only. This research has been built upon the belief that lean is for everything and has challenged this stereotype by implementing it within a job shop environment. A manufacturing industry was selected that was rebuilding battlefield tanks. The existing system was suffering delays and missing delivery targets due to uncertain and costly production. The proposed and existing systems were modeled and simulated using Arena 10.0 software. This work was successful in reducing the manufacturing-led time, work in process inventory and average cycle times with a reduction in cost and space utilization. Cost benefit analysis was performed showing that the proposed system would be beneficial after 1500 parts. We are further expanding our proposed approach towards the tool manufacturing shop in order to study the impact of lean and its suitability for scheduling in job shops.
A R T I C L E I N F O
Keywords • Manufacturing, Toyota Production System, Lean thinking, Job shop production, One piece flow, Manufacturing simulation
Corresponding author • Haider, A.
Article history • Received 30 October 2014, Revised 4 February 2015, Accepted 8 February 2015
Published on-line • 7 March 2015
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