Patent ID: 6564111
Filing Date: 2003-05-13
Classification: B24B,G05B,Y10T

Abstract:
A method for producing a bevel on the edge of a spectacle lens using a CNC-controlled spectacle-lens edge-machining machine with the following steps:scanning the bevel groove of a spectacle-lens opening in a selected spectacle frame, including the cross-sectional shape and the circumference of the bevel groove, inputting the determined values into a control device of the spectacle-lens edge-machining machine, scanning the spectacle-lens edge-machining tool with regard to its diameter and the shape of its bevel groove, inputting the determined values into the control device of the spectacle-lens edge-machining machine, comparing the values of the cross-sectional shape of the bevel groove of the spectacle frame with the values of the cross-sectional shape of the bevel groove of the spectacle-lens edge-machining tool, carrying out the machining of the bevel using the determined values, if the compared values of the cross-sectional shapes and the diameter of the spectacle-lens edge-machining tool lie within a predeterminable first tolerance range, or carrying out the machining of the bevel using a correction value, if the compared values of the cross-sectional shapes satisfy at least one of lying within a second tolerance range and the diameter of the spectacle-lens edge-machining tool is smaller than a predeterminable, minimum value, or not carrying out the machining of the bevel, if the compared values of the cross-sectional shapes lie outside the first and second tolerance range.