Definition
Originating from Toyota Production Methods (TPS), manufacturing methods centred on maximizing value and minimizing waste.
In detail
Lean manufacturing is a management philosophy derived from the Toyota Production System, centered on maximizing customer value and minimizing waste. It systematically removes non-value-added work by identifying value streams, creating flow and pull, and pursuing perfection. It is a foundation of operational improvement and complements Six Sigma, which focuses on variation, and the Theory of Constraints, which focuses on bottlenecks. Lean emphasizes organization-wide participation and continuous improvement; typical outputs include value-stream maps, standard work, kanban systems, stronger improvement habits, and better performance.
Example in practice
An electronics assembly factory faced delivery delays and high inventory. Management decided to implement lean manufacturing. They first conducted value stream mapping for core product lines, identifying significant waiting and transportation waste, then introduced pull production and kanban management, and established standardized work. After months of improvement, line balance improved, work-in-process inventory significantly decreased, delivery lead time shortened, and employees developed the habit of proactively identifying and eliminating waste.