Compact CNC turning centers

Doosan’s 8" and 10" turning centers in the Puma GT2100 series incorporate key advantages of the Puma 240 in a more compact package, with improved performance, accuracy, and reliability.

The Puma GT’s 30° single-piece, slant-bed design reduces the center of gravity of the spindle and cross slide by 12%. The natural frequency (NF) – the amount of structural vibration – is a critical factor in the machine’s contouring performance and surface finishes. The NF of the Puma GT2100 bed is 42% higher, delivering greater dynamic stability in high-speed operation. Cast design, optimized with 3D computerized analysis, delivers stable cutting performance with minimized cutting vibration and extended tool service life. Wide ribs and a box-type slideway further reinforce bed rigidity.

An optimized spindle overhang design minimizes the rotational inertial load, enhances rigidity, and shortens acceleration and deceleration. A larger Z-axis servomotor delivers 60% more feed thrust. The spindle is also shorter for reduced acceleration/deceleration time while the spindle drive belt length has been reduced, allowing less belt stretch, higher milling accuracy, and less belt vibration.

A reduced number of parts in the machine makes the design simpler and more reliable. For example, the turret parts have been reduced up to 53%, with pulleys, belts, and intermediate gears eliminated and replaced with a larger servomotor.

The BMT55P turret tooling is fixed with four bolts and keys to provide powerful machining performance with high efficiency and rigidity, and a precision internal drive system.

The operating console features a Doosan-Fanuc i control with a 10.4" color TFT LCD monitor with PCMCIA card, USB port, embedded Ethernet connectivity, and an 88° swing type panel. In addition, the Puma GT2100 is easier to load, since the distance from front cover to spindle center is reduced from 17.2" to 15.3". Finally, the Puma GT2100 series machines are up to 25% smaller than the previous models.

Doosan Infracore Machine Tools
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