Maximised productivity

Citation

(2008), "Maximised productivity", Aircraft Engineering and Aerospace Technology, Vol. 80 No. 5. https://doi.org/10.1108/aeat.2008.12780eab.017

Maximised productivity

Article Type: Aerospace technology From: Aircraft Engineering and Aerospace Technology: An International Journal, Volume 80, Issue 5

The Deckel Maho DMC 75 V linear VMC, able to provide full five-axis simultaneous machining cycles, claims the advantage of ultra-short positioning times through the use of linear drive systems in each of its three main axes capable of accelerations of 2 g up to the ultra high speed 90 m/min rapid traverse rate. The machine has axis travels of 885 mm in X, 600 mm in both Y and Z and with such quick positioning movements, significant improvements in productivity can reportedly be gained when carrying out 3D machining cycles involving repositioning between each pass or movement to a new feature to be produced on the component.

Available from DMG of Luton, the DMC 75 linear machine is constructed using a heavy duty cast iron gantry that supports both X- and Y-axis movements. Carried on the gantry is a B-axis fork-head arrangement driven by torque motor that provides a −10° to +110° swing with hydraulic clamping in its programmed position.

The bi-lateral mounting of the spindle ensures high levels of mechanical stability and through absolute positioning, integrates with a 360° NC rotary table which has a working surface of 750 mm diameter and will hold parts weighing up to 800 kg.

The direct drive HSK-A63 spindle has a 46 kW, 18,000 revs/min specification as standard that will deliver some 130 nm of torque with further options of a massive 55 kW, 28,000 revs/min unit with 47.5 nm of torque or a high speed 13 kW, HSK-E50 spindle that will run to 42,000 revs/min.

Each spindle type can be supplied from a 30 tool magazine with further options of 60, 120 or 150 tool positions. Chip-to-chip tool exchange time is fast for a machine of this size at 6 s.

With options of Heidenhain iTNC 530 or Siemens 840D powerline controls and the latest 3D workpiece simulation, extensive software to support five-axis milling, scanning or measuring cycles is included.

The DMC 75 V linear has automatic acceleration control as standard where acceleration parameters are adjusted according to the weight of the workpiece. There is also an advanced “ATC” software option that provides fully automatic adjustment, or “fine tuning” of machining parameters, based on preferences dictated by surface quality, the level of precision required or maximum output. This feature is said to enable the user to achieve higher productivity gains and minimise production cycles while maintaining the level of quality required.

For further details please contact: DMG (UK) Ltd, Tel.: +44 (0)1582 570661, web site: www. gildemeister.com