Starrag XXL Mill-Turn Center Designed for Large Workpieces

Starrag’s XXL milling/turning center offers accuracy because of its rigid design and hydrostatic guide concept. A working area of 748" × 354" × 118" enables the processing of large workpieces in a single clamping operation. There is also an option for flexible five-axis processing because of the integrated C-axis with stepless rotation and the fork-type milling head, featuring a B-axis that swivels ± 203 degrees. The sixth-axis (W) is a 217" continuously movable crossbeam.

The machining center uses a 134-hp main spindle with a torque of as much as 66,372, transmitted via vertical and horizontal milling heads; two fork-type milling heads designed for five-axis operation as well as a slim outboard bearing for drilling. Additional heads can be used for milling, turning, grinding and turning out. The robot magazine, which has space for as many as 400 tools, supplies the milling and turning heads with three tool systems.

The table construction, which features two tables (236" × 315"), is said to ensure efficient machining. This construction means that one table can be used under the spindle while the other is loaded/unloaded outside the work area. Extra-long workpieces are machined simultaneously, for which tables are extended to 709". Each table also features an integrated rotary table with a diameter of 236". Because of the two 149-hp main drives, the turning of components weighing as much as 440,925 pounds is also possible. The rotary table can be used as a C-axis for positioning when milling and drilling.