Method of grinding lenses and apparatus therefor

Details Method of grinding lenses and apparatus therefor Method of grinding lenses and apparatus therefor

1990-07-06

1991-12-10

Valentine, Donald R.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

2041295, 2041297, 204217, 204224M, B23H 508, B23H 514, B23H 728, B23H 732

Patent

active

050715259

ABSTRACT:
A method of grinding a lens and an apparatus therefor during dependent machining in which an electrically conductive grinding tool which rotates and a workpiece slide in close contact with each other on the work surface of the electrically conductive grinding tool. An anode is applied to the electrically conductive grinding tool, whereas a cathode is applied to an electrode which does not move together with the workpiece, while a fixed distance is maintained between the work surface of the electrically conductive grinding tool and the electrode. Grinding is thus performed with the aid of a weakly charged coolant fed between the electrically conductive grinding tool and the cathode.

REFERENCES:
patent: 3445372 (1969-05-01), Fromson
patent: 3669867 (1972-06-01), Adachi
patent: 4236985 (1980-12-01), Grodzinsky et al.
patent: 4849599 (1989-07-01), Kuromatsu
patent: 4956056 (1990-09-01), Zubatova et al.

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