Method of grooving or counter-beveling the periphery of an...

Details Method of grooving or counter-beveling the periphery of an... Method of grooving or counter-beveling the periphery of an...

2011-06-21

2011-06-21

Morgan, Eileen P. (Department: 3723)

Abrading

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

With indicating

C451S011000, C451S043000

Reexamination Certificate

active

07963824

ABSTRACT:
A method for grooving or counter-beveling the periphery of an opthamalic lens in a grinding machine is provided. The grinding machine includes a lens support with a mechanism configured to rotate the lens about a first axis, a grooving or counter-beveling wheel rotatable about a second axis which can be tilted relative to the first axis, and a mechanism to adjust the angle of tilt of the second axis relative to the first axis. Initially, a profile for the groove is determined. A single treatment angle corresponding to the profile is calculated, and the angle of tilt of the second axis is adjusted to the value of the single treatment angle. A groove or counter-bevel is ground into the periphery of the lens with the angle of tilt remaining constant throughout the grinding.

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