Patent ID: 6325704
Filing Date: 2001-12-04
Classification: B24B

Abstract:
A method of finishing an edge of a glass sheet having a thickness not greater than 3 mm, comprising the steps of:chamfering the top and bottom of said edge of said sheet to form chamfered planes while reducing the overall width of said edge by not more than 35 microns, the angle between each of said chamfered planes and the adjacent major surface of said sheet being less than 40 degrees; androunding each edge formed by the intersection of each of said chamfered planes and the original edge of said glass sheet;wherein:(a) said chamfering step comprises contacting the top and bottom of said edge of said sheet with at least one rotating grinding wheel that has a grinding surface with at least one v-shaped groove, said grinding wheel being parallel to the major surface of said glass sheet; and(b) said rounding step comprises contacting the top and bottom of said edge having chamfered planes with at least one rotating polishing wheel that has a polishing surface that is sufficiently soft so that formation of a concave chamfer on said edge is avoided.