The Australian Government’s ambitious project requires large machines, such as the Droop+Rein gantry 110TT supplied by Starrag.


“The Australian Government (Commonwealth of Australia) selected French company Naval Group to deliver a fleet of 12 regionally superior submarines, to be known as the Attack Class, for the Royal Australian Navy. The Attack class fleet will be built in a modern submarine construction yard in Osborne, South Australia.

The Future Submarine Program will deliver Australia a capability that can be built, operated and maintained autonomously, which maximizes opportunities for Australian industry throughout all phases of the program.

As the design of the Attack Class progresses, Naval Group works in cooperation with its suppliers that now includes the Starrag Group. Dr. Marcus Queins, Manager for the Large Parts Machining Systems business unit at Starrag, explained, “We are proud to be involved in this prestigious project in Australia.” Starrag has been selected to supply a Droop+Rein G 110TT HR100 C vertical gantry machine that is capable of handling both large hull elements and high-precision components for submarine construction. With traversing paths of 45.93″ x 42.65″ x 11.48″ in the XYZ axes and a 3′ turntable, the gantry will be the largest machine tool ever put into service in Australia, according to Starrag.

Starrag is collaborating with the Australian machine tool manufacturer H&H Machine Tools Australia to deliver this critical equipment. H&H will manufacture key components, supply qualified personnel to help install the gantry and provide technical support for the entire life cycle of the machine, securing an ongoing role in servicing and maintenance in the future. Starrag will provide H&H with the necessary expertise through onsite training and quality control, transferring critical skills and autonomous ability to Australian industry.

“The contract was awarded following a complex selection process. The Starrag Group was selected due to its many years of experience and its extensive technical expertise in handling large, complicated projects,” said the spokesperson. “Few machine suppliers can manage an order of this magnitude from over 19,320 miles away, but this was not a problem for the Starrag Group since H&H will facilitate local work, ensuring that everything runs smoothly onsite. A previous project carried out in South Australia, for which Starrag supplied four machines for aircraft construction, demonstrates a proven track record in this regard.”

“The size and efficiency of the milling machine being supplied, which is also capable of turning components due to the integrated rotary table-tried and tested as part of the Dörries range of lathes from the Starrag Group-was of fundamental importance,” continued the spokesperson. “The Droop+Rein G 110 TT HR100 C owes its high precision to features such as the hydrostatic guides in all linear axes, as well as the thermo-symmetrical design of the milling unit with its integrated C-axis.”

Milling heads can be changed automatically via a head change interface. The team responsible selected five different machining heads to use on this project. The high-performance fork milling head features not only the ability to use the tool at any angle but also the necessary prerequisites for heavy-duty machining on five axes simultaneously. Alternatively, the machine can be used with one straight and one angled 100 kW (134 HP) milling head with a torque of 7,500 Nm (5531 ft-lbs.). A turret and a horizontal facing head are available for turning operations on the components.

The operator can reach any point on the workpiece due to the spacious cabin, which travels along the gantry and features the latest Siemens operator panel. The cabin can reach a height of 8 m (26′) and be moved towards the center of the table.

With proper maintenance, the machine will be operational for the entire duration of the submarine project. The first of the Attack Class submarines will be delivered in the early 2030s and continue into the early 2050s.”

Source: Manufacturing News