SMED changeover study: measure last good to first good
Use a time observation sheet to separate internal and external work, preserve safe setup steps, and verify a repeatable changeover improvement.
SMED
Single-minute die exchange.
Single-Minute Exchange of Die: method for cutting changeover time by converting internal setup (machine stopped) to external setup (prepared while running). Target: changeovers under ten minutes.
See also: Changeover · OEE
Use the concept: Cp, Cpk, Pp & Ppk calculator · Downtime log template · MTBF, MTTR & availability calculator
In depth
Gauge R&R: how much variation is the gauge?
A gauge R&R study separates measurement error from real part-to-part variation, so you can tell whether a tolerance decision is trustworthy.
Takt time vs cycle time vs lead time: calculate the right clock
A worked shift example separates customer pace, observed process speed and end-to-end delivery time, with practical checks before changing the line.