Abstract
The Lean Manufacturing is a theory which looks for optimization in goods production through the removal of waste and implementation of flow, in opposition to batch and queue. Originally, there are 7 wastes called 'muda', which are: Overproduction (production more important than demand), Transportation (moving products that is not actually required to perform the processing), Waiting (waiting for the next production step), Inventory (all components, work-in-progress and finished product not being processed), Motion (people or equipment moving or walking more than is required to perform the processing), Over Processing (due to poor tool or product design creating activity), Defects (the effort involved in inspecting for and fixing defects). This theory comes from the Toyota Production System (TPS). Toyota's growth from a small company to the world's largest car manufacturer has been possible due to the TPS and Lean manufacturing System. To be clear, the lean Manufacturing approach consists of identifying and then eliminating all effective losses which mark out the chain of value (since the reception of the material until the forwarding of the product). There are several steps in Lean Manufacturing: Incremental changes, multifuncionality, participation, empowerment, close relations with suppliers, flow & transport improvement, TPM (Total Productive Maintenance), small batches, SMED (set-up time reduction of 25+ times) and Poka-Yoke.
