Starrag tackles titanium with new ECOFORCE Ti machining centers

Starrag tackles titanium with new ECOFORCE Ti machining centers

By Manufacturing Technology Insights | Friday, July 24, 2020

Starrag has expanded its range of machines for titanium machining with the introduction of the high-speed, five-axis ECOFORCE Ti horizontal machining centers.

The new machines combine the renowned construction capabilities of the Starrag companies’ expertise in vertical table design and jig boring column accuracy to result in a machine range that is unmatched in cost-effective titanium machining.

The machines cover X-, Y- and Z-axis capacities up to 248 in (6,300 mm) by 118 in (3,000 mm) by 118 in (3,000 mm) and feature three-axis roughing head and/or five-axis fork-type head for finish machining.

They boast rapid traverses of up to 787 ipm (20,000 mm/min) in all axes, for ultra-efficient machining of aircraft structural workpieces weighing up to 26,455 lb. (12,000 kg).

Effectiveness of machining is guaranteed with the rigid ‘gate-type’ spindle column, while enhanced stiffness and damping is courtesy of hydrostatic guiding on all linear axes (on the largest capacity machine).

Importantly, the machines differ from the ‘traditional’ approach to machining titanium components which are usually clamped horizontally; the ECOFORCE Ti models adopt Starrag’s well-proven vertical clamping approach which, coupled with 100-bar coolant supply, not only encourages chips to immediately fall away but also leads to reduced unit and tool costs.

Two ECOFORCE Ti machines are available: models Ti9 and Ti13 – where the number denotes their nominal torque ratings of 664 and 959 (900 and 1,300 Nm) in continuous S1 operation.

The machines have HSK-A100 and HSK-A125 tapers. The 67 HP (50 kW) fork-type milling head, which develops 10 to 3,000 rpm and a torque of 1,770 (2,400 Nm), is complemented by a 101 HP (75 kW) spindle extension rated at 3,000 rpm and a torque of 4,056 (5,500 Nm).

Flexibility in manufacture is also based on pallet size options of versions from 78.7 in (2,000 mm) by 157 in (4,000 mm) and up to 98.4 in (2,500 mm) by 236 in (6,000 mm), as well as tool magazine alternatives from a chain-type magazine for 60 tools up to robot-assisted tool change for 450 tools.

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