Patent ID: 7731565
Filing Date: 2010-06-08
Classification: B24B

Abstract:
1. An eyeglass lens processing apparatus for beveling a peripheral edge of an eyeglass lens, comprising: a pair of lens chuck shafts which hold the eyeglass lens; a V-groove beveling grindstone which simultaneously processes bevel slopes on front and rear sides of the eyeglass lens; a front beveling grindstone and a rear beveling grindstone which individually process the bevel slopes on the front and rear sides, respectively, wherein a width of each of a front beveling slope of the front beveling grindstone and a rear beveling slope of the rear beveling grindstone is larger than a width of each of a front beveling slope and a rear beveling slope of the V-groove beveling grindstone; a lens edge position detector for detecting edge positions of a front surface and a rear surface of the eyeglass lens on the basis of target lens shape data; a mode selector which selects one of a low curve lens processing mode and a high curve processing mode; a computing unit which: a beveling controller that in the low curve lens processing mode, performs beveling the peripheral edge of the eyeglass lens by the V-groove beveling grindstone on the basis of the low curve beveling data, and in the high curve lens processing mode, performs beveling the peripheral edge of the eyeglass lens by the rear surface beveling grindstone on the basis of the first high curve beveling data, or performs beveling the peripheral edge of the eyeglass lens by the front and rear beveling grindstones on the basis of the second high curve beveling data.