Device for lathe machining of optical workpieces of materials of non-brittle hardness
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United States of America Patent
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Aug 19, 2014
Grant Date -
Mar 10, 2011
app pub date -
Aug 30, 2010
filing date -
Sep 4, 2009
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Abstract
An apparatus for the machining of optical workpieces of materials of non-brittle hardness, particularly of plastics material spectacles lenses, has a holder, which is operatively connected with an actuator for reciprocating movement, and a support, which is fixable to the holder and to which a cutting tip of monocrystalline diamond, which has an arcuate cutting edge, is fastened. In order to be able to use the cutting edge over its curve length to avoid of premature wear in the rotary machining, provision is made for a positioning device, by which the support is fixable in at least two different relative positions with respect to the holder to dispose substantially different circumferential sections of the cutting edge for the rotary machining.
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