Eyeglass lens grinding machine

Details Eyeglass lens grinding machine Eyeglass lens grinding machine

1997-08-29

1999-04-06

Rose, Robert A.

Abrading

Precision device or process - or with condition responsive...

Computer controlled

451 43, 451240, 451255, 451256, 451277, B24B 4906

Patent

active

058909494

ABSTRACT:
An eyeglass lens grinding machine for processing lenses to be fitted in an eyeglass frame. Frame configurational data of an eyeglass frame and layout data of a lens are input to the machine, and a layout of the lens is determined based on the frame configurational data and the layout data. An edge position of the lens in the thickness direction is obtained based on the determined layout, and lens processing data is computed based on the layout and the edge position. An insufficiency in the diameter of the lens relative to the lens processing data is detected. A predetermined reference range relative to the insufficiency is set, and a judgement is made as to whether or not the insufficiency is within the predetermined reference range. A processing command signal is entered based on the result of this judgement. When the insufficiency is detected and the processing command is entered despite the insufficiency, a grinding operation is performed with the insufficiency left, based on the lens processing data.

REFERENCES:
patent: 5053971 (1991-10-01), Wood et al.
patent: 5333412 (1994-08-01), Matsuyama
patent: 5347762 (1994-09-01), Shibata et al.
European Search Report.

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