|
||
Single minute exchange of die (SMED)Single minute exchange of die (SMED) provides a rapid and efficient way to covert a manufacturing process from running a current product to running the next product in line. The rapid changeover to a new product is part of the lean manufacturing principle, Mura. Mura is aimed at improving the overall flow of production. Companies that have already implemented a lean manufacturing system should look into SMED as one of their tools. It helps to eliminate unnecessary waste within the company and it aims to improve customer satisfaction. The different with SMED and other lean tools is that it is focused on one small step in the entire manufacturing process, which differs from other concepts that look at is as a whole.
The concept behind SMED arose in the 1950s when Shigeo Shingo, of Toyota, was looking to find a solution to their bottlenecking problems in the car body-molding process. Long change-over times were causing the bottlenecks to occur and were increasing the overall production lot size. If a change-over takes too much time it increases the overall cost of the actual production. Due to high land costs in Japan, Toyota found it difficult to store economic lots of their vehicles. The economic lot size (EQQ) for Toyota cost more than their competitors and Shingo could not find a reasonable solution. SMED was created to reduce costs by implementing smaller lot sizes. Toyota reworked vehicle components to minimize the assembly tools and extra steps in the manufacturing process, thereby reducing change-over times. There are 4 conceptual stages that also needed to be followed as you implement SMED. First, you must ensure that the external setup applications are performed as the machine is in process. Second, All the internal and external actions need to be separated to ensure that the parts function properly and are efficient in transporting the die and other necessary parts. Third, you must convert internal setup actions to be external ones. Fourth, the final stage is to improve all the setup actions. When you begin implementing SMED, you can use additional toolkits to help the process. Some popular toolkits include: visual control, checklists, attachment plates, 5 S Methodology, overhang tools, locating pins, stopper, and other tools.
,
|
||
Copyright 2003-2020 by BusinessKnowledgeSource.com - All Rights Reserved
Privacy Policy, Terms of Use |