B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
57/23, 51/75
B24B 37/04 (2006.01) B24D 7/00 (2006.01)
Patent
CA 1276469
TEXTURED LAPPING PLATE AND PROCESS FOR ITS MANUFACTURE ABSTRACT OF THE DISCLOSURE A lapping plate is selectively textured for improved useful life and greater abrading consistency. Glass beads are serially propelled onto a lapping surface of the lapping plate in order to form spherical cavities of generally uniform size and distribution, and of a desired density. The cavities provide discontinuity in the lapping surface which substantially prevents workpiece hydroplaning. The cavities also receive loose abrading grit, workpiece fragments and other contaminants, resulting in more smoothly machined workpiece surfaces. Use of the lap plate with cavities also has been found to improve the co-planarity of composite magnetic transducing heads.
567818
Holmstrand Allan L.
Magnetic Peripherals Inc.
Seagate Technology International
Smart & Biggar
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