A new product used to mean a new fixture, a new test rig, and a week of trial and error before the first good unit came off the line. We now run that week in simulation instead.
Building the twin
Every new assembly gets a digital twin before a single bracket is cut: the part geometry, the robot reach envelope, the conveyor timing, and the tolerances the customer actually asked for. We validate the sequence against physics, not against intuition.
On a recent enclosure redesign, the twin caught a collision between the gripper and a fastener boss that three experienced engineers had missed on paper. Catching it in simulation cost us an afternoon. Catching it on the floor would have cost a day of downtime and a reworked fixture.
The numbers that matter
- Average time from design freeze to first good unit, twin-validated lines: 11 days.
- Same metric, lines built without a twin, last full year before the policy: 27 days.
- Fixture redesigns caught before fabrication, last two quarters: 14 of 19 flagged issues.
Where the twin still falls short
Material behavior under real thermal load is the one variable we still cannot fully trust in simulation. We still run a physical thermal soak on every new enclosure, twin or no twin. The twin tells us where to look. It does not replace the instrument.