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09/19/2017|EMO 2017 - World premiere: DMU 340 Gantry

The new standard in the gantry field: powerful, dynamic, compact and universally applicable

Intelligent large component machining with CELOS for aerospace, mechanical engineering and die & mould – the DMU 340 Gantry impresses with its top gantry design. 

  • Stable: One-piece, thermo-symmetrical machine bed of EN-GJS-600 for maximum rigidity and accuracy
  • Dynamic: Wear-free, highly dynamic linear drives in the X- and
  • Y-axis with up to 0.5 g and 90 m/min rapid traverse (optional), ram with integrated C-axis as direct drive for highest dynamics in 5-axis simultaneous machining
  • Modular: Expandable to 6,000 mm in the X-axis and 1,500 mm in the Z-axis
  • Flexible: B-axis milling head with direct drive and 50° swivel plane for the machining of angles up to -10°
  • Powerful: Extensive range of spindle modules with HSK-A100 motor spindles up to 430 Nm
  • Intelligent: CELOS for simplest operation, holistic integration into the company organisation and continuous IoT performance
The DMU 340 Gantry with its 12 m³ work area volume was particularly developed for large component machining, in the aerospace industry, tool and mould making and general mechanical engineering. 

For Markus Piber, Managing Director of DECKEL MAHO Pfronten GmbH, the new DMU 340 Gantry is the impressive result of an in-depth liaison with the large component manufacturers from the aerospace industry, general mechanical engineering as well as tool and mould manufacturing. And he is convinced: “With its high performance, dynamics, compactness and universality, the DMU 340 Gantry is the new benchmark in the gantry field.” The work area of the DMU 340 Gantry measures 3,400 x 2,800 x 1,250 mm and provides expansion options to up to 6,000 mm in the X- and 1,500 mm in the Z-axis. Due to its gantry design, it also has compact dimensions. Direct drives in the B- and C-axis as well as linear drives in the X- and Y-axis enable dynamic 5-axis simultaneous machining of workpieces – primarily made of carbon, aluminium, steel and cast iron. A spindle module with speeds up to 30,000 rpm or up to 430 Nm torque supports the large range of components.

The linear drives in the X- and Y-axis act contact-free, with long-term precision as well as maintenance-free and thus guarantee unparalleled dynamics of up to 5 g, with best control quality. “Coupled with the rigidity of the machines, this enables excellent surfaces up to Ra 0.3 µm. Furthermore, high rapid traverses result in a significant reduction of the machining time by up to 30 percent”, adds Markus Piber.

The single-piece, thermo-symmetrical machine bed and the comprehensive cooling measures ensure high thermal stability and thus enable complex machining under changing conditions.

The DMU 340 Gantry has extensive cooling measures for maximum part precision and surface quality as well as optional linear drives with up to 0.5 m².

The standard version with 4,400 x 2,700 mm table already provides space for workpieces weighing up to 10,000 kg. The maximum load can optionally be increased to 30,000 kg. Larger travel distances can be added on request: 6,000 mm in the X-axis and 1,500 mm in the Z-axis. By default, the DMU 340 Gantry achieves travel distances of 3,400 x 2,800 x 1,250 mm. Whereby workpieces up to 4,400 x 3,040 x 1,540 mm can be machined – with at the same time smaller footprint of 59 m2. The production of complex large components is ensured: The B-axis milling head has a 50° swivel plane enabling the machining of angles up to -10°.

The DMU 340 Gantry uses the SK40-SpeedMASTER motor spindle as standard, produced in-house with 15,000 rpm and 130 Nm. The range of spindle modules allows an application-specific equipment with HSK-A63 SpeedMASTER spindles with up to 30,000 rpm or up to 79 kW for high machining performance with excellent surfaces at the same time. These are the order of the day in the aerospace field. The HSK-A100 spindles with 430 Nm torque for heavy-duty machining, specifically in mould making, round off the comprehensive range of spindles on offer. There is space for 30 tools in the chain magazine as standard. The optional wheel magazine provides space for 63 tools and can be extended to up to 183 tool pockets.

As far as the control is concerned, DMG MORI is using CELOS for the DMU 340 Gantry as it does for all its machines. In addition to CELOS on SIEMENS, DMG MORI is now also presenting CELOS on Heidenhain at the EMO 2017. The app-based control and operating interface supports users on the machine with 21.5" multi-touch display and 26 CELOS APPs with regard to the organisation of orders and process optimisation. CELOS acts as interface for integration of the machine into the company organisation and for their interaction in production networks of the future. Adding to this are intelligent equipment options for optimising manufacturing processes and further increasing process reliability. This includes amongst others an infrared measuring probe, tool measurement in the work area, mechanical tool breakage monitoring as well as Machine Protection Control (MPC) for reliable prevention of collisions.

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