C Dugard of Hove has added a CNC horizontal boring machine to its Dugard Eagle range
C Dugard of Hove has added a CNC horizontal boring machine to its Dugard Eagle range
The machine is designed for those who need a high-specification, rigid & powerful solution for large components weighing up to two tonnes & up to 5.5m by 2.6m by 1.3m that need precision boring, milling, drilling & certain turning cycles.
A multi-pitch worm driven rotary table of 1,200mm by 1,500mm with one micron indexing as standard & a hydraulic clamping torque of 4.5 tonnes applied to the heavy-duty bed ensures precision indexing & rigidity.
The HBM-4 weighs some 22 tonnes, has a 30kW motor mounted within a heavy-duty column that is carried over its 1,600 Z-axis stroke on hardened & ground boxways having the advantage of two additional supporting ways giving maximum stability & aiding positioning accuracy.
This enables heavy cutting & tool overhang conditions such as when line-type boring operations are performed typical of the use for a machine of this type.
The spindle & sleeve assembly is supported on double rollers with ISO 50 taper to the 110mm diameter quill & the W-axis outfeed stroke is 550mm.
The spindle is served by a 60 tool magazine using a travelling arm tool exchange with easy access for tool loading from the rear.
Driven through a high torque gearbox with oil chiller, hardened & ground gears & automatic two-speed modify, the spindle revolutions available are between 35 & 3,000revs/min.
Travel in X-axis is 2,200 mm with 1,600 mm in Y & Z axes covered at speedy traverse rates of 12m/min.
The maximum tool diameter, automatically handled by the technique, is 250mm by 300mm long & weighing up to 25kg.
Combined axis feed rates are fully programmable between one & 5,000mm/min while the B-axis rotary table has a top speed of 8revs/min to provide a turning or profiling capability.
An auger type chip conveyor is standard with options of an angle or universal milling head, a facing head with telescopic toolholder, spindle extension sleeves & an 1,800 increment rotary table.
Control is via Fanuc 18i/20i or Heidenhain’s iTNC 530.