Patent ID: 6220926
Filing Date: 2001-04-24
Classification: B24B

Abstract:
An eyeglass lens grinding apparatus for grinding, including bevel processing so as to produce a bevel having an apex on a periphery of a lens to fit into an eyeglass frame, comprising:frame data inputting means for entering configuration data on said eyeglass frame;layout data inputting means for entering layout data to be used in providing a layout of the lens corresponding to said eyeglass frame;edge position detecting means for detecting an edge position, on each of a front and a rear surface of the lens as expected after completion of bevel processing, on the basis of said frame configuration data and said layout data whereby an edge thickness, as measured between the front and rear surfaces of the lens at the lens periphery, can be determined;selecting means which selects between an auto-bevel processing mode and a forced-bevel processing mode;arithmetic means, which has at least one parameter that can be set by a processor, for calculating bevel position data, including a position of the bevel's apex along the edge thickness, for auto-bevel processing on a basis of data obtained by the edge position detecting means and on a basis of said at least one parameter;parameter input means, which has a display for displaying an input screen and a screen input means, for allowing a processor to input said at least one parameter in the auto-bevel processing mode;a storage element which stores the processor-input parameter; andcontrol means for causing said arithmetic means to calculate bevel position data, including a position of the bevel's apex along the edge thickness, on the basis of the processor-input parameter, when the auto-bevel processing mode is selected.