Patent ID: 9579774
Date: 2017-02-28
CPC Classifications: B24D,B28D

Claim:
1. A grinding tool, comprising a matrix, and diamonds embedded in the matrix, wherein: each of at least a majority of the diamonds has at least one wear-promoting particle and at least one wear-inhibiting particle associated therewith, the at least one wear-promoting particle and the at least one wear-inhibiting particle are embedded in the matrix, the grinding tool has a grinding direction, the at least one wear-promoting particle is embedded in the matrix upstream of the diamond with which the at least one wear-promoting particle is associated in the grinding direction and the at least one wear-inhibiting particle is embedded in the matrix downstream of the diamond with which the at least one wear-inhibiting particle is associated in the grinding direction, and the grinding tool has a grinding contact surface which is towards an article to be ground in a condition of use, the at least one wear-promoting particle is at a smaller spacing relative to the grinding contact surface in relation to the diamond with which the at least one wear-promoting particle is associated, and the at least one wear-inhibiting particle is at a greater spacing relative to the grinding contact surface in relation to the diamond with which the at least one wear-inhibiting particle is associated.