Variable Rough Lap Machining For Magnetic Recording Read-Write Heads

• Main Authors: Gee Glenn P, Beaucage Jacey R, Campbell Richard C, Guruz Unal Murat, Thomas Scott, Olson Trevor W
• Format: Patent
• Language: English
• Published: 10.11.2016
• Subjects: DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS; GRINDING; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; PERFORMING OPERATIONS; PHYSICS; POLISHING; TRANSPORTING

A process for machining a row of magnetic read-write head sliders involves setting, for the row of sliders, (a) a wedge angle that corresponds to an angle relative to the direction of the reader-writer offset (e.g., the y-axis) and (b) a read-write error correction process control that corresponds to a machining profile according to which the row is machined along the direction of the row (e.g., the x-axis). The row of sliders is then machined simultaneously according to the set wedge angle and the set read-write error correction control process, effectively providing multiple-axis machining control for varying reader and writer dimensional control along a row. Thus, a slider at one end of the row may be machined at a different angle, relative to the x-axis, than a slider at the opposite end of the row.