Verfahren zur Herstellung eines Magnetkopfkernes mit Magnetspalt und schmaller Spur

摘要

A method of producing a magnetic head core having a coil-winding groove around which an annular magnetic path is formed, and a magnetic gap (38) intersecting the magnetic path, and a track (56) having a predetermined track width (Tw) and extending in a direction perpendicular to the magnetic gap, the magnetic gap and track being formed in a medium-sliding surface of the head core. The method includes the steps of: forming a track precursor (42) in a surface of a core body which gives the medium-sliding surface of the head core, the track precursor (42) having a larger width than a predetermined track width, and extending across the magnetic gap in a longitudinal direction of the core body; and pressing a shearing tool (50) against the track precursor, and applying a force to the shearing tool to thereby remove by shearing at least one of widthwise opposite portions (54) of the track precursor adjacent to the magnetic gap, so as to form the track (56) having a predetermined track width (Tw) in the vicinity of the magnetic gap.