Doosan DNM 5700

The Doosan DNM 5700 is a vertical machining center built around a 1,300 × 570 mm (51 × 22 in) table that takes 1,000 kg (2,205 lb), with 1,050 mm (41 in) of X, 570 mm (22 in) of Y and 510 mm (20 in) of Z travel. Its ISO 40 spindle runs to 8,000 rpm with 18.5 kW (25 hp) and 117.8 N·m (87 ft-lb). It is a current model from DN Solutions, the company that was Doosan Machine Tools until 2022.

Z is the first figure to test a job against. At 510 mm (20 in) it is no more than the DNM 4500 offers, so the bigger table does not bring taller work with it. Stack a rotary table, a fixture and a long drill and the daylight goes quickly. If height is the constraint, the DNM 6700 is the model that changes it, with 625 mm (25 in) of Z and a 1,300 kg (2,866 lb) table.

In plan the step from the smaller machine is real. The DNM 4500 has 800 mm (31 in) of X, 450 mm (18 in) of Y and a 600 kg (1,323 lb) limit, so the DNM 5700 carries about 67% more weight. That is enough for three vises in a row or a mold base with its clamping. The spindle figures are identical across the DNM 4500, DNM 5700 and DNM 6700, which means the mid-size machine removes metal no faster than its smaller sibling; it simply holds more.

Axis rapids are 36 m/min (1,417 ipm) in X and Y and 30 m/min (1,181 ipm) in Z. DN Solutions says the new DNM series has a larger table, more Y travel and a higher table load than before, and credits it with a shorter tool change time and higher axis feed rates. The machine measures 2,413 × 3,100 × 2,985 mm (95 × 122 × 118 in) as length, width and height and weighs 6,500 kg (14,330 lb). Tool magazine capacity and the control are not in the table.