Abrasive tool with contoured surface
OwnerNaum N. Tselesininventor
Life of this patent
Estimating the term…
Abstract
An abrasive material has a contoured surface defining peaks and valleys, and side walls connecting the two. The peaks, side walls and valleys are covered with diamonds or other hard particles for effecting the grinding. In the beginning, the hard particles support one another laterally to prevent premature removal of particles, and the valleys provide for fluid flow for debris removal, cooling and protection of the retaining matrix. Later, the particles on the side walls, and eventually those in the valleys, become active in grinding, so that tool life is extended.
Claims18
An abrasive material for grinding or polishing, said abrasive material comprising a carrier for receiving a plurality of hard particles, and means for holding said hard particles to said carrier, said carrier being contoured for defining a plurality of peaks which are in contact with a surface being ground, and a plurality of valleys which are spaced from said surface being ground, said plurality of hard particles substantially uniformly covering at least a portion of said carrier, said portion including both some of said peaks and contiguous ones of said valleys, the arrangement being such that said hard particles are adjacent to one another so that said particles laterally support one another.
An abrasive material for grinding a workpiece, said abrasive material including a plurality of peaks for initially engaging said workpiece, a plurality of valleys between the peaks of said plurality of peaks, and a plurality of side walls connecting said peaks and said valleys, and a plurality of hard particles, said peaks, said valleys and said side walls being generally uniformly covered with said plurality of hard particles for grinding said workpiece, the arrangement being such that said hard particles on said peaks initially grind said workpiece and said hard particles on said side walls and said valleys grind said workpiece after said peaks are worn away from grinding.
The method for making an abrasive material, said abrasive material including a carrier, a plurality of hard particles fixed to said carrier, and means for fixing said hard particles to said carrier, said method including the steps of placing a plurality of hard particles on a contoured surface, and covering said contoured surface and said hard particles with a matrix material for holding said hard particles in the fixed position.
Dependencies are inferred from the claim text.