Patent ID: 7131903
Filing Date: 2006-11-07
Classification: B24D

Abstract:
1. A grinding device especially adapted to perform dry machining, the grinding device comprising: a plurality of grinding segments and a matrix surrounding at least one of said plurality of grinding segments, said at least one of said plurality of grinding segments comprising a resin bond material and a superabrasive material provided in an amount between 10% and 43.75% by volume of the total composition of the grinding segment dispersed throughout the resin bond material, said at least one grinding segment comprising a refractory non-grinding abrasive grain material provided in an amount less than 10% by volume of the total composition of the grinding segment, a heat-dissipative melt-phase metal material comprising a copper tin alloy provided in an amount between 30% and 68% by volume of the total composition of the grinding segment to enhance heat dissipation through the grinding segments, and a dry lubricant material provided in an amount at least 1% by volume of the total composition of the grinding segment to inhibit the generation of heat due to friction; and said matrix comprising an epoxy resin, said matrix further comprising a dry lubricant provided in an amount between 1% and 5% by weight of the total composition of the matrix to inhibit the generation of heat due to friction, a porosity filler provided in an amount between 3% and 15% by weight of the total composition of the matrix, and a refractory non-grinding abrasive grain provided in an amount between 10% and 70% by weight of the total composition of the matrix for the purpose of wear retardation, whereby the grinding device is adapted to perform dry machining operations without the use of more than a nominal quantity of coolant or other lubricant.