Metal working – Method of mechanical manufacture – Electrical device making
Patent
1991-08-20
1993-05-11
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
360127, G11B 542
Patent
active
052089657
ABSTRACT:
A method for producing a magnetic head having a head core which includes a first head core half body (22) having a winding groove (22b) at one side surface thereof, a second head core half body (23) having one side surface joined with the side surface of the first body, both half bodies being fixed by mold glass (25) about a joined plane thereof via a gap spacer (24) of material having a melting point higher than the mold glass, and one end surface (20a) normal to the joined plane and shaped into an arc to become a tape sliding surface having a magnetic gap at the joined plane. The first and second head core half bodies are formed from pole shaped bodies (26, 27) having long grooves (26a, 26b, 26c, 27a) and notches (26d, 27b) cut therein after which the pole shaped bodies are joined together by abutting the notched faces (24, 26B, 27B) together and joining them by molding melted glass in the notches (26d, 27b) and groove (26c). After solidifying the glass, the magnetic heads are cut off on planes through the notches and grooves. The first body has a back groove (22c) formed by cutting out a part near the other end surface opposite to that on which the sliding surface (20a) is formed, and a pair of first track width regulation grooves (22d) cut out of both corners of the joined plane and having a slant at a predetermined angle (DEG.sub.1) extending from a portion near the opposite end toward the sliding surface (20a) and transverse to the winding groove (22b). The second body (23) has a pair of second track width regulation grooves (23b) cut out of both corners between the joined plane and the sliding surface (20a) on a slant at a predetermined angle from the middle of the winding groove (22b) to the sliding surface. The mold glass (25) is filled into the back groove (22c) and the first and second regulation grooves for fixing the first and second bodies by solidification after cooling.
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Nemoto Kouji
Ohara Sohei
Ozeki Makoto
Tsutsui Takashi
Hall Carl E.
Victor Company of Japan Ltd.
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