What Is SMED? Changeover Method Explained
Single-Minute Exchange of Die, explained.
Definition
SMED (Single-Minute Exchange of Die) is a lean manufacturing method for reducing changeover time by converting internal setup steps, done while the machine is stopped, into external steps done while it is still running, and by streamlining the remaining steps.
The SMED steps
- 1Separate. Split internal and external setup activities.
- 2Convert. Move internal activities to external where possible.
- 3Streamline. Simplify and standardise all remaining steps.
Frequently asked questions
Single-minute exchange of die: a changeover in under ten minutes.
No. It works for any changeover, from packaging lines to CNC machines.
Standardize the new sequence in a work instruction and measure each changeover.
