Mandrel-table retrofit: VFD braking, rope-pull stops, and clamping — documented end to end.
A production mandrel table needed faster controlled stops, emergency-stop coverage along its length, and positive clamping during changeovers — without scrapping a working machine.
Starting condition
The table coasted too long after stop commands, e-stop coverage did not extend along the full operator side, and changeover clamping depended on operator judgment. Insurance review was pending.
What was scoped
Mithril scoped a retrofit combining a VFD with braking control for the drive motor, rope-pull switches along the operator side, pneumatic clamping with a documented control sequence, and a safety-relay architecture suitable for later licensed review. Deliverables included parameter notes, an I/O summary, and a wiring package a field technician could service.
Outcome
Budget band: roughly $12,000–$16,000 including controls hardware. Duration: about six weeks end to end. The shop passed its follow-up review with the documented safety path in hand.
Why it matters to your machine
Safety retrofits do not require replacing good iron. Drive braking, rope-pulls, and clamping are additive changes that document well and satisfy reviewers when the wiring package is clean.
Related services
Case notes are anonymized where customers asked. Numbers are ballparks from project records, not offers. PE-stamped or code-regulated portions are handled through Utah licensed firms when required.