Apparatus for grinding eyeglass lens

Details Apparatus for grinding eyeglass lens Apparatus for grinding eyeglass lens

1998-03-31

2000-04-11

Butler, Rodney A.

Abrading

Machine

Rotary tool

451 5, B24B 700

Patent

active

060482583

ABSTRACT:
A lens grinding apparatus that can process the edge of a lens to have a satisfactory polished surface and fit snugly into the user's eyeglass frame. The apparatus includes frame configuration data input device for entering data on the configuration of the eyeglass frame, layout data input device for entering data to be used in providing a layout of the lens corresponding to the eyeglass frame, lens rotating shafts that hold the lens therebetween and rotate it, a finishing abrasive wheel rotating shaft having a finish abrasive wheel, a polishing abrasive wheel rotating shaft having a polishing abrasive wheel, computer which, on the basis of the information from the frame configuration data input device and the layout data input device, determines the locus of processing with the polishing abrasive wheel such that the amount of polishing after finish processing increases as the point of polishing departs from the line connecting the polishing abrasive wheel rotating shaft and each of the lens rotating shafts, and processing controller which controls the processing of the lens based on the result of calculation by the computer.

REFERENCES:
patent: 5138770 (1992-08-01), Matsuyama
patent: 5228242 (1993-07-01), Matsuyama
patent: 5333412 (1994-08-01), Matsuyama
patent: 5347762 (1994-09-01), Shibata et al.
patent: 5716256 (1998-02-01), Mizuno et al.
patent: 5803793 (1998-09-01), Mizuno et al.
patent: 5890949 (1999-04-01), Shibata

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