Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1990-10-26
1992-10-20
Rachuba, M.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
5116572, 51101LG, B24B 4900
Patent
active
051559404
ABSTRACT:
An apparatus for judging whether or not an uncut lens should be machined is provided. The apparatus judges whether or not a lens having a desired lens frame configuration can be obtained from an uncut lens before the lens is subjected to a grinding treatment by a lens grinding machine. The apparatus also judges whether or not an already sucked and attached uncut lens should be machined by judging whether a "machining interference" caused by a sucking disk sucked and attached to the uncut lens will come in contact with a grinding wheel, and/or whether or not a lens of a desired lens frame configuration can be obtained from the uncut lens before the uncut lens with the sucking disk already sucked and attached thereto is subjected to a grinding treatment. A lens grinding machine incorporating such a judging apparatus is also provided.
REFERENCES:
patent: 4524419 (1985-06-01), Headlund et al.
patent: 4557077 (1985-12-01), Kolb
patent: 4656590 (1987-04-01), Ace
patent: 4723376 (1988-02-01), Blum et al.
patent: 4737918 (1988-04-01), Langlois et al.
Kabushiki Kaisha Topcon
Rachuba M.
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