Patent ID: 7338350
Filing Date: 2008-03-04
Classification: B23C,B24B,B24D,Y10T

Abstract:
1. An edger for shaping a peripheral edge an eyeglass lens, comprising: a first table moveable in a first direction, and a first drive motor for controllably moving said first table in said first direction; a lens clamping and rotating assembly secured to said first table and moveable therewith, said rotating assembly for controllably rotating a lens about a first axis extending generally transverse to said first direction; a second table moveable in a second direction perpendicular to said first direction and parallel to said first axis, and a second drive motor for controllably moving said second table in said second direction; a router tool mounted to said second table and moveable therewith, said router tool rotatable on a second axis parallel to said first axis and said tool comprising a longitudinally extending body rotatable on the axis thereof, said body having a proximal portion and a distal portion, a first cutter extending axially and radially from said distal portion, said first cutter having a first blade for shaping an edge of a lens, said distal portion having a first diameter defined by said first blade, and a second cutter secured to and extending coaxially from said distal portion and rotatable therewith, said second cutter having a second blade for shaping the edge of the lens, said second cutter having a second diameter less than said first diameter; and a high-speed motor for rotating said tool at a speed of up to about 20,000 RPM.