Numerical control for a multi-axis machine for machining a tilted working plane

A multi-axis machine, which is controlled by a numerical control, using at least three linear axes for controlling the position of a tool relative to a work piece which is attached to a table, and three rotational axes for controlling the orientation of the tool relative to the workpiece to the machining be carried out on an inclined working plane of the workpiece. A three-axes of rotation calculation unit, which forms an analysis unit calculates the respective positions of the three axes of rotation so that a tool coordinate system, which is applied to the tool, and moves, when the tool moves is parallel to a feature coordinate system is a representative of the inclined working plane of the workpiece coordinate system. The three axes of rotation are moved to the calculated positions.