Device designed to cut off the spent wire on a spark erosion machine

摘要

Cutting device for spark-erosion machine wires in which, after passing through a machining region, the wire-electrode (1) is cut up into sections (20) which are disposed of as waste products into a recovery receptacle (12). The device comprises electrical contacts (14) connected to a voltage/current source (17). The wire is subjected to a dielectric fluid whose flow rate is sufficiently high to generate a turbulent flow regime and cause random lateral movements of the wire which sporadically brushes against the contacts.