Turning centres improve operator ergonomics

Expanded range of Puma GT turning centres features four new models.

420_Puma-GT2600MDoosan has expanded its range of Puma GT turning centres with four new models that includes features such as a ridge 30 degree single piece sland bed design, box guideways, fast non-lifting servo driven turrey and EZ Guide conversational programming system.

Standard chuck size is 10 in. (optional 12 in. available) with a maximum swing over bed of 24.8 in. and swing over saddle of 18.1 in. Maximum turning length is 25.9 in. on the standard GT2600; 24 in. for the GT2600M, while the long bed versions offer 42.4 in. on the GT2600L and 40.6 in. on the GT2600LM.

The maximum bar working diameter is 3.2 in. on all four models.

Box guideways are applied to all axes to increase dampening and rigidity for deep, powerful cuts. The single-piece slant bed design reduces the centre of gravity of both the spindle and cross slide by 12%, minimizing thermal growth.

The spindle, with a maximum speed of 3,500 rpm, has three angular ball bearings in the front and cylindrical roller bearings in the rear to minimize thermal growth and increase precision. An optimized spindle overhang minimizes rotational inertial load to enhance rigidity and reduce acceleration and deceleration time.

The operating console has a Doosan-Fanuc i control with a large 10.4-in. colour TFT LCD monitor with USB port, PCMCIA Card, ethernet connectivity, QWERTY keypad and single-touch hot keys to simplify set-up and operation.

Doosan is a manufacturer of CNC machine tools and components based in Pine Brook, NJ.

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