Globalization has led to a significant effect on today's manufacturing sector. Manufacturers need to find new and innovative ways to increase efficiency and reduce waste in the manufacturing supply chain. Lean/six sigma tools can help companies increase production efficiency and stay competitive. Manufacturing in smaller batches can keep the supply chain lean and customizable. This leads to frequent changeovers and downtime. A changeover is usually required when a single machine produces different products based on the requirement. A large-scale industry can either install multiple individual production lines to cater to the demand (usually expensive) or make frequent machinery changes. Single Minute Exchange Die (SMED) is a system designed for reducing the changeover time for machines. This paper proposes a model for production scheduling in a machine changeover and discusses its implementation in the stages of SMED. The paper further illustrates the viability and benefit of the proposed model. This results in a benefit-to-cost ratio of 7.5 for production scheduling compared to that of stage 5 in SMED, which is 1.2.