Abstract A method of generating the bearing surface on a ''''flying'''' magnetic recording head. The desired bearing surface is of compound curvature, having a significant crown along an axis parallel to the flying direction and a lesser concavity along an axis transverse to the flying direction. The bearing surface is produced by lapping an essential element of the head, henceforth called ''''slider'''' against a control surface. In a first embodiment of the method, the control surface comprises a thin sheet of glass, metal or ceramic distorted to a contour which is the inverse, or converse, of the desired shape; and the slider is lapped against the control surface using a combined lateral and cross-lateral motion, Alternatively, the slider may be clamped so as to distort it to a contour which is the inverse of the desired surface contour, lapped against a planar control surface, and then released from the clamp whereby the unstressed slider will have a bearing surface contour of the desired shape.
A method for producing a compound curved surface from a relatively flat blank comprising: a. forming the inverse of a desired contour on an abrading surface by 1. providing a relatively rectangular abrading surface, 2. clamping said abrading surface to a flat rigid surface at the mid-points of one opposite pair of sides, 3. raising the mid-points of an opposite pair of sides until the inverse of said desired contour is produced, b. moving said blank in an abrading relation to said abrading surface in a first direction, and c. reciprocating said blank in a second direction transverse to said first direction.
Claim 2
Independent Claim
102 words
A method for producing a compound curved surface from a relatively flat blank comprising: a. forming the inverse of a desired contour on an abrading surface by 1. providing a relatively rectangular abrading surface, 2. clamping said abrading surface to a flat rigid surface at the mid-points of one opposite pair of sides, 3. raising the mid-points of an opposite pair of sides until the inverse of said desired contour is produced, b. moving said blank in an abrading relation to said abrading surface in a first direction, and c. reciprocating said blank in a second direction transverse to said first direction.
Claim 3
Dependent Claim
18 words
clamping said abrading surface to a flat rigid surface at the mid-points of one opposite pair of sides,
Claim 4
Dependent Claim
18 words
clamping said abrading surface to a flat rigid surface at the mid-points of one opposite pair of sides,
Claim 5
Dependent Claim
17 words
A method as in claim 1 wherein said movement in said first direction is a reciprocating movement.
Claim 6
Dependent Claim
16 words
A method as set forth in claim 1 wherein said abrading surface is ceramic coated steel.
Claim 7
Dependent Claim
48 words
raising the mid-points of an opposite pair of sides until the inverse of said desired contour is produced, b. moving said blank in an abrading relation to said abrading surface in a first direction, and c. reciprocating said blank in a second direction transverse to said first direction.
Claim 8
Dependent Claim
48 words
raising the mid-points of an opposite pair of sides until the inverse of said desired contour is produced, b. moving said blank in an abrading relation to said abrading surface in a first direction, and c. reciprocating said blank in a second direction transverse to said first direction.
Claim 9
Dependent Claim
21 words
A method as set forth in claim 1 wherein said blank is a recording head slider blank containing a magnetic core.