System for rotationally slaving an optical fiber feeding and dispensing device in a cabling line

In an optical fiber cabling line where a ring having parallel helical grooves is drawn at a constant translational speed by a main motor, a system for slaving a rotational speed of optical fiber feeding and dispensing means rotationally driven by motor means to a number of translated ring groove pitches per second, said optical fibers fed from said feeding and dispensing means being dispensed into said grooves in said translated ring.

• said system comprising translationally stationary means rotationally driven by said helical grooves of said translated ring, means rotationally linked to said fiber feeding and dispensing means and translatable parallel to said ring by said rotationally driven means in response to a speed difference between said rotational speed and said number of pitches per second, and electromechanical means for detecting a translation of said translatable means thereby converting said speed difference into a voltage variation,
• and said motor means comprising a gearbox mechanically coupled to said main motor, a direct current and variable speed corrector motor controlled by said voltage variation, and a differential mechanically coupled to said gearbox and corrector motor for rotationally driving said fiber feeding and dispensing means at a rotational speed proportional to a rotational speed imposed by said gearbox and continuously corrected by said corrector motor in function of said speed difference.