Prototype on 2000 piles
For over a century, Droop+Rein has been making a positive contribution to mobility. Machining centres from Bielefeld are used to produce drives for submarines, ship motors and aircraft landing gears. However, a milling head from the FOG series is involved in one of the most unusual applications on a daily basis on Lake Constance. It is used to produce segments for pulley wheels for the global market leader in cable car construction.
"If we're talking about Droop+Rein, we'd certainly consider buying a second one". That's the short assessment of Karl-Heinz Zündel, Head of Production at Doppelmayr Seilbahnen GmbH from Wolfurt (Austria), and shows the company's satisfaction with the FOGS D40. It was made by Bielefeld-based Droop+Rein, a brand belonging to Dörries Scharmann Technologie GmbH (a subsidiary of the Swiss Starrag Group). The Austrian cable car manufacturer was impressed on a visit to German company Liebherr-Aerospace Lindenberg GmbH in Allgäu, where three machines from the same series manufacture landing gear components for aircraft. Zündel and his department manager, Klaus Meyer, particularly like the gantry concept.
For its specific application - turning, milling and drilling up to 13 meter segments for pulley wheels (drive wheels) - Doppelmayr ordered a larger, open unit of the FOGS D40 type with two working areas, something that Droop+Rein had never before produced in this type and size (20,000 mm x 9,400 mm x 6,900 mm). The travel distances on the multifunctional machining centre are 12,000 mm (X-axis), 4,000 mm (Y-axis) and 2,000 mm (Z-axis), with a travel angle of ± 200° (controlled C-axis). The machine table for the 135 ton unit measures 4,000 mm x 12,850 mm, while the rotary table has a diameter of 3,000 mm and is powered by two 60 kW AC motors.
Machines from the FOGS D40 series have a mechanical main drive with fork-type milling head and cartridge to hold the motor and gear spindles. The milling unit is made up of the cross slide, which can be moved in the Y-axis, and the fork head attached to the 40 kW slide feed milling unit (Z-axis, max. 6,000 rpm), which has an integrated C-axis. Doppelmayr had the machine fitted with an eccentric fork-type milling head along with an angled and a vertical milling head (each with 40 kW of power).
FOG machining center: Used by global market leader
High tech on the piste - Getting safely to the top - cut by cut
Prototype on 2000 piles