Machine and method with 7 axes for CNC-controlled machining, particularly generating cutting or grinding; of spiral bevel gears

A machine for CNC-controlled machining, particularly generating cutting or generating grinding, of spiral bevel gears with and without hypoid offset,

• having a work gear spindle for rotatably mounting a work gear;
• a tool spindle for rotatably mounting a tool;
• means for relative movement of the work gear spindle and the tool spindle in up to three different directions (X, Y, Z),
• wherein a first spindle of the work gear spindle and the tool spindle forms for all bevel gears to be machined on the machine a fixed, non-adjustable tilt angle (κ) against an orientation axis (O), and wherein the first spindle is adapted to be continuously swiveled about the orientation axis (O) by a rotatable swivel device,
• and the second spindle, forming a reference plane with its axis (W or T) and the orientation axis (O), is, for a bevel gear to be machined on the machine adjustable in its angular position about a pivot axis (P) which pivot axis is perpendicular to the reference plane, but the second spindle does not change its angular position during the machining operation, wherein the tilt angle (κ) and the angular position are selected such that a predetermined relative rolling motion between the work gear and the tool can be achieved.