Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent
1980-10-20
1982-09-07
Whitehead, Harold D.
Abrasive tool making process, material, or composition
Impregnating or coating an abrasive tool
51145R, B24B 100
Patent
active
043476899
ABSTRACT:
A method and apparatus for burnishing the coated recording surface of magnetic disks. The method consists in contacting the coated surface of a rotary disk with a longitudinally stationary length of an abrasive burnishing tape while oscillating that tape laterally back and forth across the surface. The length of the tape has a first segment which is urged into contact with the coated surface and a much longer second segment which is urged into contact only by its own weight. Prior to burnishing each surface, the tape is advanced longitudinally so that a section of the tape serves as the first segment for only a single coated surface and so that a section of the tape to serve as the first segment has already served as the second segment in burnishing prior coated surfaces. The apparatus employed to burnish the coated surface of disks has a rotating platen onto which a disk is placed and an arm around one terminal end of which the tape passes. The apparatus also has apparatus for lowering the arm, oscillating it, laterally raising it and advancing the tape. The operation of these mechanical elements of the apparatus are controlled and synchronized by a system of electronic control modules and transducers.
REFERENCES:
patent: 1974806 (1934-09-01), Curtis
patent: 2449387 (1948-09-01), Johnson
patent: 2573220 (1951-10-01), Riedesel
patent: 4179852 (1979-12-01), Barnett
Schatzel Thomas E.
Verbatim Corporation
Whitehead Harold D.
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