METHOD FOR GRINDING/MACHINING GEAR AND MACHINING DEVICE

摘要

Disclosed is a method that is for grinding/machining a gear and that grinds a gear (W) having a curved tooth surface (S) using a machine tool (10) that can derive in the direction of a rotating feed shaft. The method includes: a setting procedure for setting a machining point (P) on the tooth surface on the basis of the shape data of the gear (W) that is ground; a computation procedure that computes the normal vector (vt) extending in the direction perpendicular to the tooth surface (S) at the machining point (P) that is set in the setting procedure, and computes derived data (?A, ?C) that is such that the axis of rotation of the grindstone (14a) attached to the machine tool (10) becomes parallel to the normal vector (vt); and a control procedure that controls the machine tool (10) on the basis of the derived data (?A, ?C) computed in the computation procedure, thus grinding/machining the gear (W).