What is the Single-Minute Exchange of Dies (SMED) process?
Single Minute Exchange of Dies (SMED) is a process that aims to reduce change over time of machines, with the ultimate goal of reducing equipment setup time to a minute. SMED is a progressive procedure that aims to optimize a small part of the process, everytime it is executed, until achieve the minimum changeover time possible.
To achieve an optimized time, SMED helps reducing the number of tasks, by cutting the ones that are not useful for changeovers, so the process becomes faster, easier and more efficient.
How are Single-Minute Exchange of Dies (SMED) implemented?
The process starts by identifying changeover tasks. Following, tasks are analyzed to find their true purpose, and, low costs solutions to replace them. Finally, solutions are implemented and changeover time and costs are reduced.
The process is defined into steps that aim to reduce unuseful tasks, and also aim to focus human effort into more relevant parts of the operation:
- Differentiate external and internal activities: Activities that are executed while machines are operating and while they are not.
- Transform the internal in external activities, so they can be done while the machine is operating.
- Standardize the different steps of the changeover so everyone follows the same efficient patterns.
- Modify machines to facilitate the changeover.
- Find parallel activities that can be executed at the same time, to reduce time.
- Focus efforts in production by reducing material adjustment tasks.
- Find tasks that can be automated
How Industry 4.0 can influence the process?