Method of making magnetic head cores with cant angles

Details Method of making magnetic head cores with cant angles Method of making magnetic head cores with cant angles

1978-04-19

1979-04-24

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

51 38, 51 92ND, 51327, 360122, 360125, G11B 542

Patent

active

041504798

ABSTRACT:
A method for batch fabricating magnetic heads with a desired cant angle in the transducing surface of the magnetic core. The cant angle reduces the "Minor Bit" phenomenon. The two parts of the core which require the cant angle are mounted on a fixture so that a grind wheel is simultaneously in contact with both parts. Materials are simultaneously subtracted (i.e., grind away) from both parts to create mirror images at the surfaces which adjoin the grind wheel. The surfaces are then cleaned and glassed to provide a core bar with intimate fit. The core bar is diced into individual cores and is lapped to size. The individual cores are then fitted into a slider assembly to form the magnetic head.

REFERENCES:
patent: 2183699 (1939-12-01), Schweiker
patent: 3624897 (1971-12-01), Reade et al.
patent: 3810245 (1974-05-01), Ozawa et al.
patent: 3903545 (1975-09-01), Beecroft et al.

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