DMG Mori NZ QUATTRO

The DMG MORI NZ QUATTRO is a multi-turret production lathe with four turret positions working on a main and a counter spindle, for bar up to 72 mm (2.8 in) and workpieces up to 1,290 mm (50.8 in) long. X travel is 210 mm (8.3 in), Y travel 80 mm (3.1 in) and Z travel 1,290 mm (50.8 in).

DMG MORI's own turning example shows what the four positions are for: an 8 mm radial depth of cut at all 4 turret positions in CK 45, at a 65 mm cutting diameter and 270 m/min cutting speed, for a metal removal rate of 750 cm3/min. Putting several tools into the cut together is how this kind of machine shortens the cycle on parts made in volume, and it is the reason to choose it over a lathe with fewer turrets.

A B-axis is possible at all 4 positions, with a swivel range of -10° to +100°. That lets standard tools do the work of special angle tools and allows 5-axis simultaneous operation. Milling comes from a 12,000 rpm built-in motor turret with up to 24 Nm / 16 kW, offered with 12 stations for VDI 30 and BMT 40 or 16 stations for VDI 25 and BMT 45.

The main and counter spindle are listed with up to 7,000 rpm, 5,000 rpm as standard, and 174 Nm of torque. The torque is a 100% DC rating, so it is available continuously and on both spindles, and the spindles have a 36 month warranty with unlimited spindle hours.

With this many tools in play, the TWIN spindle (TS) is worth asking about. It splits the machine into two independent work areas, turns at up to 4,000 rpm and 60 Nm, and can act as a rotating guide bush at up to 5,000 rpm or as a steady rest. The NZ DUE and NZ TRE list the same three travels as the NZ QUATTRO, so the envelope does not separate them.