Method for cutting a gear, gear-cutting tool and gear-cutting machine

Method for cutting a gear (4) from a metal workpiece (2) in which a tooth flank, still having an oversize compared with its predefined final geometry, of the gear (4) is, in one or more cutting passes in cutting engagement with one or more cutting tools (10) fed thereto, hard-fine finished with a geometrically undefined cutting edge made of cutting grains incorporated in a binder matrix, in order to produce a reflective property, existing in the final geometry, of the surface of the tooth flank,

• characterized in that,
• in a cutting pass of a cutting tool (10b), both an elastically resilient mounting of the cutting grains set by its binder matrix acts on the surface property of the tooth flank, and a cutting reduction of the oversize by at least 2 μm at the tooth flank is realized by a compressive preload, set via the infeed of the cutting tool, to which the cutting engagement is subjected,
• wherein the compressive preload is effected by a radial overfeed of at least 20 μm and/or at most 100 μm corresponding as a reference-related, negative oversize beyond the final geometry.