Layered resinoid/diamond blade for precision cutting operations

Stock material or miscellaneous articles – Structurally defined web or sheet – Including grain – strips – or filamentary elements in...

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428408, 428323, 428327, 428110, 51297, 442391, B24D 302

Patent

active

056373880

ABSTRACT:
A composite resinold/graphite/diamond blade is described having enhanced precision cutting properties. The blade is made by assembling several layers, each layer comprising a veil of non-woven graphite fabric impregnated with a mixture of diamond particles blended into a phenolic resin. Layers are built up in sandwich fashion. In one embodiment described, four layers are formed and, in a heating compression molding operation, the sandwich is compressed into a composite blade having a diameter of 4.7 inches with a thickness of 0.011 inch. The final blade is formed by a die cut and lapping process. The layered construction yields a blade with more consistent cross-section and improves blade wear symmetry. In another embodiment, the layers are tailored to have a grit concentration of the diamond/resin mixture at the periphery or cutting edge.

REFERENCES:
patent: 3793783 (1974-02-01), Paternno, Jr. et al.
patent: 4671021 (1987-06-01), Takahashi et al.
patent: 5313742 (1994-05-01), Corcoran, Jr. et al.

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