Machine Setup and Changeover: SMED and Faster Turnarounds
Every minute a machine is down for changeover is a minute it is not making money. SMED turns hour-long changeovers into single-digit minutes.
QUICK ANSWER
Machine setup and changeover is the process of switching a machine from one job to the next, and SMED (single-minute exchange of dies) reduces that downtime by separating internal steps that require the machine stopped from external steps that can be prepared while it runs. Converting internal steps to external and standardizing the sequence is how changeover time drops dramatically.
Internal vs External Setup
The core SMED idea is simple: any setup step that can be done while the machine is still running is external, and everything else is internal. Moving work from internal to external, and preparing tooling in advance, is where most of the time savings come from.
Standardize and Streamline
- Prepared tooling: dies, fixtures, and tools staged before the machine stops.
- Standard sequence: a defined, repeatable order removes hunting and rework.
- Quick clamping: replacing threaded fasteners with quick clamps saves minutes.
A Lean Core Skill
Changeover reduction supports lean manufacturing and pairs with workforce simulation.
WE BUILD THIS IN VR — THE PRIME VR
We build changeover into VR so operators practice the SMED sequence, tooling staging, and quick-clamp technique on a realistic machine. The scoring layer times the changeover and flags internal steps that should have been external.
Book a discovery callFrequently Asked Questions
What is SMED? +
SMED, or single-minute exchange of dies, is a lean method to reduce machine changeover time by separating internal setup steps that require the machine stopped from external steps that can be done while it runs, then converting internal to external.
What is the difference between internal and external setup? +
Internal setup can only be done while the machine is stopped, while external setup can be prepared while the machine is still running. Converting internal steps to external is the main source of changeover time savings.
Why does changeover time matter? +
Every minute of changeover is production downtime. Faster changeovers allow smaller batch sizes, more flexibility, and higher machine utilization, directly improving output and cost.
Cut changeover downtime with trained operators
We build changeover into scored VR practice.