Patent ID: 7179025
Filing Date: 2007-02-20
Classification: B23F,Y10T

Abstract:
1. A machine for CNC-controlled machining, of spiral bevel gears with and without hypoid offset, said machine comprising: a work gear spindle for rotatably mounting a work gear; a tool spindle for rotatably mounting a tool; and 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 a tilt angle (K) against an orientation axis (O), wherein the tilt angle is non-adjustably fixed for all possible machining operations of said machine, 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 (K) and the angular position are selected such that a predetermined relative rolling motion between the work gear and the tool can be achieved.