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First automatic filament servo tensioning system used on an EBD coil winder
News

November 1999:  Engineering By Design, of San Jose CA, develops a mandrel coil winder that used closed-loop servos to allow programmable tension control that can be changed as a function of process steps.  Dual servo loops linking the load cell to the dancer torque and the dancer position to the supply spool drive made this possible with minimal tension variations at all speeds..