Stone working – Sawing – Rotary
51206R, B28D 104
An abrasive cutting blade assembly with multiple cutting edge exposures consists of a thin annular abrasive cutting blade supported by a hub or ring for mechanical support. This hub or ring is preferably made of plastic or other material that can be easily abraded away. As the diameter of the hub or ring is abraded away it will increase the amount of cutting edge or blade exposure of the cutting edge. The method of doing this is to cut into a piece of bonded abrasive material with the rotating cutting blade assembly. The bonded abrasive material will have abrasives that are of a hardness less than the abrasives in the cutting blade. In this manner, the cutting blade will penetrate the bonded abrasive material but the material of the hub or ring will be abraded away as it comes in contact with the bonded abrasive material, thereby increasing the cutting edge or blade exposure.
patent: 3657845 (1972-04-01), Sekiya
patent: 3691707 (1972-09-01), Von Arx
patent: 3886925 (1975-06-01), Regan
patent: 4569326 (1986-02-01), Tanizaki
Dicing Technology Inc.
Kisliuk Bruce M.
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