A new, 5-axis, vertical-spindle machining centre with a working volume of 925 x 1050 x 600 mm, designated MU-6300V, has been introduced by Okuma.

The Japanese machine is designed to accept large workpieces up to 830mm diameter, 550 mm in height and weighing 600kg. It is ideal for multi-sided machining of complex parts in one hit. Rapid traverse at 50m/minute in the orthogonal axes minimises non-cutting times and promotes high productivity.

A rigid double column structure supports a +90/-120° trunnion table which provides two rotary CNC axes. Twin roller gear cam drives on the trunnion (A-axis) and a direct drive motor for the 630mm diameter rotary table (C-axis) deliver smooth movements for high quality machining.

The centre of gravity of the trunnion table and therefore the workpiece is low, enabling both heavy-duty cutting and high-speed finishing. An -L variant of the machine can be supplied that includes the ability to turn components on the table at up to 800rpm. The MU-6300V is built on Okuma’s Thermo-Friendly Concept structure, which minimises heat generation during machining and compensates for thermal deformation.

Either a BT40 (HSK-A63) or a BT50 (HSK-A100) taper can be specified, respective maximum speeds of the 11kW spindle motor being 10,000 and 6,000rpm. More powerful and faster spindle options are available: 22kW/15,000rpm or 26kW/12,000rpm. Tool magazine capacity is 32 pockets, or optionally 48.

The OSP-P300M control, which provides fully interpolative 5-axis machining, is easy to use and has built-in collision avoidance. Geometric error measurement and correction with the 5-axis Auto Tuning System further raises the accuracy of machined components.

The footprint of the machine is less than 5 m x 3 m. An automatic pallet changer and extra tool storage can be added at the back to enable automation or inclusion in a flexible manufacturing system.

For more information contact Forest Engineering on TEL 011 397 4050 or visit www.fhmt.co.za