Method for processing an edge of a glass plate

摘要

A method for beveling a thin glass plate by simultaneously grinding an edge of the glass using multiple abrasive cup wheels, wherein the edge of the glass plate is extended from the fixturing device. The extension of the glass plate allows the glass plate to bend in response to forces applied by the abrasive cup wheels, thereby reducing the sensitivity of the grinding process to variations in position of the abrasive wheels. The axes of rotation of the abrasive wheels are separated by a distance selected to prevent deflection in the glass plate caused by a first abrasive wheel to influence the deflection in the glass plate caused by a second (adjacent) abrasive wheel.

主权项

1. A method of shaping the edge of a glass plate comprising:
coupling a glass plate to a support fixture, a portion of the glass plate extending from the support fixture a distance L and comprising a first surface, an second surface opposing the first surface and an end surface, and wherein the first surface and the end surface intersect along a first edge and the second surface and the end surface intersect along a second edge; contacting the first edge with a first abrasive cup wheel rotating about a first axis of rotation angled relative to the first surface, wherein the first abrasive cup wheel contacts the first edge with a first force F1 that produces a first deflection δ1 of the extended portion; contacting the second edge of the glass plate with a second abrasive cup wheel rotating about a second axis of rotation angled relative to the second surface and spaced apart from the first abrasive cup wheel axis of rotation by a distance D equal to or greater than 220 mm, the second abrasive cup wheel contacting the second edge with a second force F2 that produces a second deflection δ2 of the extended portion opposite from δ1, and wherein the second abrasive cup wheel contacts the second edge simultaneous with the first abrasive cup wheel contacting the first edge; producing relative motion between the first and second abrasive cup wheels and the glass plate during the contacting of the first and second abrasive cup wheels with the first and second edges, respectively; and wherein the first deflection does not overlap the second deflection.