DEVICE FOR WORKING DIE CHANNEL BY WIRE Russian patent published in 1994 - IPC

FIELD: metal working. SUBSTANCE: machine has frame carrying unit with drive roller and driven roller and mechanism for fastening and rotating die. Above mentioned unit allows grinding and polishing of dies with channel diameter not exceeding 1.5-2.0 mm to be effectuated. Device is further provided with unit including two coil winders having independent rotation drives, braking members and mechanisms for laying wire over coil width. Device has unit for providing working of any part of die channel in any combination. This unit has two pairs of rollers arranged in pairs at both sides of die holder and provided with mechanisms for automatic withdrawal and feeding of rollers to die central axis. Mechanism for automatic supplying of abrasive suspension into working zone has two cylinders communicated with machine bath at one side and communicated with tips oriented to working zone. Cylinders have rods equipped with reciprocating mechanisms. Washers with rubber corrugations are fixed on rods. Abrasive carrier is made in the form of soft wire, which is welded into ring, when first of the above mentioned units is operated. Diamond cord, which may be coiled into ring, may be used as abrasive carrier. Machine allows grinding and polishing of die channel with high speeds of working exceeding 20 m/sec to be provided. EFFECT: wider operational capabilities, simplified construction and enhanced reliability in operation. 3 cl, 7 dwg