Texture pattern for abrasive tool

A method for making an abrasive grinding tool for performing work on a work-piece in which the grinding tool includes a substrate layer and an abrasive surface layer defining a grinding surface with first and second axial ends, comprising the following steps:

• (a) defining a pattern of abrasive elements corresponding to:
• (i) a first coating portion defining the locations of a plurality of abrasive elements arranged in rows that are axially spaced apart by a first predetermined distance to define a coarse grit pattern located on the abrasive surface layer proximate to the first axial end, (ii) a second coating portion defining the locations of a plurality of abrasive elements arranged in rows of abrasive elements wherein the rows are axially spaced apart by a second predetermined distance, less than the first predetermined distance, to define a fine grit pattern located on the abrasive surface layer proximate to the second axial end, and (iii) a transition coating portion disposed at an interface between the first coating portion and the second coating portion, the transition coating portion defining the locations of abrasive elements arranged in spaced-apart rows wherein the rows are arranged at continuously varying distances from each other dependent on their axial position relative to said first and second axial ends such that the distance between first and second adjacent rows of abrasive elements proximate to the first coating portion is greater than the distance between third and fourth adjacent rows of abrasive elements proximate to the second coating portion to provide textures that continuously vary from the coarse grit pattern of the first coating portion to the fine grit pattern of the second coating portion;
• (b) depositing a plurality of abrasive elements on a surface according to the pattern to provide an abrasive surface layer;
• and
• (c) adhering the abrasive surface layer to the substrate layer.

A method for making an abrasive grinding tool for performing work on a work-piece in which the grinding tool includes a substrate layer and an abrasive surface layer located at an outer circumferential portion thereof, the method of forming the abrasive surface layer including the following steps:

• forming a first coating portion having a first coarseness defined by at least three rows of abrasive elements wherein the axial spacing between a first row and a second row and between the second row and a third row is a first predetermined distance located on the abrasive surface layer proximate to the first axial end;
• forming a second coating portion having a second coarseness, different from the first coarseness, defined by at least three rows of abrasive elements wherein the axial spacing between a first row and a second row and between the second row and a third row is a second predetermined distance and located on the abrasive surface layer proximate to the second axial end, and
• forming a transition coating portion disposed at an interface between the first coating portion and the second coating portion, the transition coating portion having a plurality of rows of abrasive elements wherein the rows are axially spaced from each other at distances such that the distance between a first row and a second row proximate to the first coating portion is greater than a distance between a third row and fourth row proximate to the second coating portion to provide textures that continuously vary from the coarseness of the first coating portion to the coarseness of the second coating portion.