MAG will introduce the first model from the NBV series, an NBV 400, on booth B05 at EMO in Milan.

One of the machine's characteristics is its modular design, which comprises a fixed table for 3-axis machining with a clamping surface of 1,000mm x 700mm (X, Y-axis).

The NBV 400 also incorporates a tilting table (A-axis) for 4-axis machining, a rotary/tilting table (C on A-axis) for simultaneous 5-axis milling and a rotary/tilting table (C on A-axis) for 5-axis mill-turning with a C-axis speed of 1,000rev/min.

This allows the NBV to be configured to provide machining solutions to multiple production requirements in the mould and die, aerospace, medical and general machining sectors.

The machine bed is a heavily ribbed casting with a solid base for the thermo-symmetrically optimised Y-slide cast.

Other cast parts are the X and Z-slide that house the main spindle.

The FEA optimised static and dynamic design provides high rigidity and stiffness as well as agility and high-performance cutting and precision.

The application of linear guideway technology on X, Y and Z axes provides ideal machine dynamics independent from the weight of the workpiece.

This results in high traverse rates (up to 60m/min) and acceleration (6m/s2) for high-performance machining and productivity.

A range of four performance spindle packages are available with speeds up to 10,000, 18,000, 24,000 and 42,000rev/min.

A 12,000rev/min spindle is offered in conjunction with the rotary/tilting table for mill-turn applications with the high-speed rotary C-axis.

With a wide torque range of 9.6/12.4Nm to 87/130Nm (100 per cent/40 per cent duty), these different spindles allow for optimal adaptation to the processing task.

The standard disc-type tool magazine holds 40 tools.

The clamping system works with disc springs that are also used in the next-generation NBH horizontal machining centres.

The tools are securely and accurately clamped by pre-loaded disc springs.

The pick-up-process allows fast, direct tool change minimising non-cutting time.

The machine concept has been designed to allow for incorporation of cost-effective automation and manufacturing cell solutions such as conveyor belt and robot loading or an additional integrated disc magazine for workpieces.

Currently, the NBV is available with Siemens or Bosch Rexroth controls with a Heidenhain option available soon.

For MAG, environmental considerations are specifications for the development process.

The NBV 400 runs without hydraulic oil, as the machine design has made all common hydraulic components redundant.

For example, the tools are clamped by disc springs and unclamped pneumatically.

A new feature of MAG machining centres is the use of a power-saving mode.

Depending on the selected saving mode, this feature automatically levels speed and acceleration to provide a suitable balance of performance and energy consumption.

While machining, the actual energy consumption and energy saving settings are displayed on a monitor.

MAG said that the NBV delivers the ideal balance of processing time, energy consumption and enhancing the lifetime of mechanical components.

The machine can also be equipped with integrated CAM-support, which will be demonstrated at the EMO exhibition.

An advantage of this is the ability to check CNC programs for new workpieces on a virtual machine online.

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