Five-axis grinding from ETG

Five-axis grinding is now a technology available from the Engineering Technology Group (ETG) thanks to the arrival of the FGC 2 flexible grinding centre manufactured by Winbro. Produced in the UK, the Winbro FGC 2 demonstrates flexibility with its 4th and 5th axis capabilities that permit complex component form grinding to be undertaken simply, quickly and precisely.

The FGC 2 features both profiled diamond roll and rotary diameter disk dressing capability to provide fast and efficient set ups. Furthermore, the machine is available with double dresser capability for multiple and extended machining operations. The dressing facility enables the economic and precise dressing of complex fir tree root forms and shroud end features that are commonplace in the aerospace industry.

From a specification perspective, the Winbro FGC 2 offers an X, Y and Z-axis work envelope of 800 x 600 x 510 mm, with a rotary A axis of 360° and tilting B axis of ±110°. The work surface of the table is 1400 x 650 mm, while the machine can rapidly traverse around the X, Y and Z axes at 32 m/min with an acceleration rate of 5 m/sec2.

The Winbro FGC 2 achieves accuracy levels in accordance with ISO230-2, with positional accuracy in the X, Y and Z axes of 0.005 mm and repeatability of 0.003 mm. The machine features a Heidenhain iTNC 640 CNC and a 38 kW spindle motor with BBT40 spindle taper that can achieve a maximum speed of 8000 rpm.

Control is via proprietary grinding software that is easy to use, operator-friendly and simple to program via on-screen graphics.

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