Abrasive tool making process – material – or composition – Miscellaneous
Patent
1992-08-28
1993-05-25
Bell, Mark L.
Abrasive tool making process, material, or composition
Miscellaneous
51295, 51309, 209 8, B24D 300
Patent
active
052135900
ABSTRACT:
Apparatus and method for the manufacture of improved abrasive tools and the like which includes apparatus and a method for the creation of a structurally viable matrix having a pattern of abrasive elements which can be shaped, cut and positioned for permanent disposition on a rigid tool body. The apparatus includes a transversely magnetized base surface with magnetic protrusions to provide a mosaic-like surface. A release layer is placed over the protrusions and magnetizable abrasive particles are diffused onto the surface of the release mechanism. The particles orient themselves magnetically to form generally conic stacks which having a stack axis and a distal working portion. The stacks define a working surface which is then coated with acrylic paint to provide structural integrity. Prior to solidification of the paint the cones may be shaped, for example, by passing a magnet near them. After the cones have been shaped and the paint dried, a braze paste is applied to encapsulate the cones and form a flexible support web between the cones. The entire matrix may then be removed from the base surface and cut and formed to any desired shape. The release mechanism may then be removed and the matrix secured to a rigid structure using an acrylic adhesive. At this point, the matrix and structure may be heated to braze temperature to form an assembly featuring a high-friction surface used as an abrasive tool.
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Bell Mark L.
Thompson Willie J.
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