What´s Just in Time Manufacturing ?

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Since final decades of the twentieth century, with the decline of Ford manufacturing systems, manufacturers throughout the world have been looking to create pure and flexible processes to improve their business performance at the network level. Among various methods, administrators and researchers around the world focused on new production models based on techniques such as Just in Time Manufacturing (JIT) and Total Quality Control (TQC) as an alternative to traditional methods of production and called it world-class production or pure production or Toyota Production System, due to its origin. The dominant feature of these systems is rejecting the hypothesis of necessity of trade-offs between diversity and quality / productivity in production; so that these systems tend to produce high diversity of products / services while maintaining a high degree of quality and productivity.
Today efforts have shifted towards purification of business networks and in particular the supply chains so that after grading their internal processes, manufacturers are looking to improve their performance by optimizing processes of the other partners in their business network. Performance of each member of the supply chain largely depends on the behavior and performance of other members. For example, in the automotive industry, quality and re-working problems in supplier’s setting means more precautious storage and more checks before handing the items by the automotive manufacturer. This would impose additional costs and delays and wasted resources. For this reason, performance of each supply chain member is important and the chain must be looked with an integrated view.
The goal of pure manufacturing is reduction of loss in human force efforts, invent...

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...ing and production and delivery times in the supplier’s setting. Successful implementation of pure manufacturing techniques has had great effects in different industries such as aerospace, computer and electronics, steel, machine tool and automotive industries.
This paper briefly introduces the project of implementation of pure manufacturing in supply chain suppliers of Saipa Group, and presents achievements of the project in final assembly line of manufacturer of steering box as case study. Also a report on efforts put in this project to improve pure quantitative and qualitative indicators including improved cycle time, promotion of utilization of production capacity and productivity, inventory decrease, reduction of operating spaces, improvement of the line layout, improvement of methods of planning and inventory control and promotion of staff skills is provided.

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