To meet these requirements, a new generation of machines has been developed in which the cut is managed by a CNC controller. The cutting inserts are no longer fixed to the spindle but are mounted on a carriage (U axis) on the spindle head so that they can be moved inwards or outwards as required. This U axis is driven by an especially designed mechanical transmission that turns with the C axis, which is also driven by an additional power axis.
The CNC machine can create any required bevel profile, regardless of the tube thickness with the same tools and cutting inserts. In addition, supplementary machining such as threading or grooving is possible.