Puma TT2100SYY Offers Off-Center Machining

The Puma TT2100SYY twin-spindle, twin-turret, dual-Y-axis turning center from Doosan Machine Tools is ideal for aerospace and medical applications that require high throughput of complex workpieces, according to the company. The addition of Y-axis capability on both the upper and lower turrets provides off-center machining capability and adds flexibility to both turrets.

For example, the dual turrets on this machine enable simultaneous OD and ID cutting to a workpiece in the main spindle. Simultaneous milling and turning of parts in both the main and subspindles delivers multiple finished pieces off of one cycle, the company says. Operations can be combined by machining one side of the part in the main spindle and finishing it in the subspindle. For long shaft parts, users can synchronize both spindles and pinch-turn to cut down on cycle time, or use a steady rest support in the lower turret for a rigid cut.

The main and subspindles on the machine feature 25 kW (34 hp) motors that turn at 5,000 rpm, outputting 223 Nm (165 foot-pounds) of torque. The spindle bearing design adds rigidity to the spindle. A 12-station turret with 24 positions accommodates BMT tooling and rotates at 5,000 rpm. An 8" chuck is standard, although other options are available.

The live tool drive runs on a 7.5 kW (10 hp) motor that outputs 47.7 Nm (35 foot-pounds) of torque and can handle a tap size as large as M16. It is designed with air and oil lubrication on the gear and bearings that lower noise levels and increase reliability by reducing heat build up, the company says.

The machine is built upon a 45-degree solid base casting for stability. A large roller-type LM guideway provides additional rigidity.