US5512004A - Lens edging machine bevel control process ...
An improved process for positioning a bevel along the edge of an opthamalic lens computes point-to-wheel data definitive of a planar relationship between the lens and the wheel, stores the point-to-wheel data, computes corrected horizontal displacement data definitive of a three dimensional relationship between the lens, the wheel and a plot of sequential contact points therebetween using the ...