The all-new Doosan Puma GT2600M CNC turning center with live tooling
Doosan has expanded its range of Puma GT series turning centers with four new models: the Puma GT2600, GT2600M, GT2600L and GT2600LM. The family of four Puma GT2600 turning centers joins the Puma GT2100 and GT2100M, which were introduced in late 2013. Distinguishing features include a rigid 30° single piece slant bed design, box guideways, a fast non-lifting servo-driven turret and EZ Guide i conversational programming system.
Standard chuck size is 10" (optional 12" available) with a maximum swing over bed of 24.8" and swing over saddle of 18.1". Maximum turning length is 25.9" on the standard Puma GT2600 and 24" for Puma GT2600M. The long bed versions offer 42.4" on the Puma GT2600L and 40.6" on the Puma GT2600LM. The maximum bar working diameter is 3.2" on all four models.
Box Guideways
Box guideways are applied to all axes to increase dampening and rigidity, providing the ideal platform for taking deep, powerful cuts. The Puma GT's 30° single-piece slant bed design reduces the center of gravity of both the spindle and cross slide by 12%, which minimizes thermal growth and improves operator ergonomics. Rapid travels are 945 IPM (X-axis) and 1,181 IPM (Z-axis).
Powerful Spindle
The spindle design features three angular ball bearings in the front and cylindrical roller bearings in the rear, minimizing thermal growth and increasing precision. An optimized spindle overhang design has minimized the rotational inertial load, enhanced rigidity and reduced accel/decel time. Spindle motor: 30 HP. Maximum spindle speed: 3,500 RPM. Maximum spindle torque: 459 ft-lbs.
Turret and Driven Tools
"Turret indexing times are fast on the Puma GT2600 due to a servo-driven non-lifting design with a high torque motor. With 53% fewer moving parts, the new design is faster and more reliable," said a company spokesperson. Number of tool stations is 12; size is 1.0 x 1.0"; maximum boring bar size is 2.0" for the Puma GT2600(L) and 1.5" for the Puma GT2600M(LM). Turret indexing time is 0.15 sec.
"The Puma GT2600M and GT2600LM feature a BMT55P top plate that secures each tool with four bolts and keys to provide powerful machining performance with high efficiency, high rigidity and a high precision internal drive system," said the spokesperson. "A bevel drive gear and air/oil cooling deliver low heat generation and minimize thermal growth while providing silent, vibration-free performance." Rotary tool speed is 5,000 RPM with a 7.5 HP rotary tool motor.
Easy Operation Panel
The operating console features a Doosan-FANUC i control with a large 10.4" color TFT LCD monitor with USB port, PCMCIA card, embedded Ethernet connectivity, full QWERTY keypad and several single-touch hot keys to simplify set-up and operation. For added convenience, the pendant is designed to swing 88°.
Doosan's EZ Guide i is included as a standard feature, offering shop floor conversational type programming. Roughing, finishing, castings, grooving, threading, peck drilling and more are all accomplished through EZ Guide's menu-driven functions. Programs are easily generated using cycles instead of long hand code.
Ease of Operation
The new Puma GT2600 is easier to load. Distance from front cover to spindle center is reduced from 17.2" to 15.3". For a machine with similar specifications, the new Puma GT2600 series are 14 to 25% more compact than the previous models.
The Puma GT2600 guarding has been designed to provide easy access for adjustment, maintenance and service. The chip conveyor design bolts directly to the machine, allowing the chip pan and coolant tank to slide out independently. This design eliminates coolant leakage and makes it easy to access and clean the tank. The tailstock guideways on the new Puma GT2600 series are covered and fully protected from chips. This eliminates the ongoing cleanup time required on previous models.
Energy Savings
Energy savings is achieved by using a 23% more efficient hydraulic unit. An LED work light is now being used that lasts 10 times longer than the previous halogen type and generates little heat. This helps to keep the work area a little cooler and thermally stable. LED lights also consume much less energy. Auto power-off functions further reduce power consumption and heat.
For more information contact:
Doosan Infracore Machine Tools
19A Chapin Road
Pine Brook, NJ 07058
973-618-2500
www.doosanmachinetoolsusa.com