Metal working – Plural diverse manufacturing apparatus including means for... – Type of machine
Reexamination Certificate
2007-11-28
2008-10-14
Ross, Dana (Department: 3726)
Metal working
Plural diverse manufacturing apparatus including means for...
Type of machine
C029S02600B, C409S131000, C409S165000
Reexamination Certificate
active
07434299
ABSTRACT:
Methods for manufacturing high precision arrays of curved features (e.g. lenses) in the surface of a workpiece are described utilizing orthogonal sets of inter-fitting locating grooves to mate a workpiece to a workpiece holder mounted to the spindle face of a rotating machine tool. The matching inter-fitting groove sets in the workpiece and the chuck allow precisely and non-kinematically indexing the workpiece to locations defined in two orthogonal directions perpendicular to the turning axis of the machine tool. At each location on the workpiece a curved feature can then be on-center machined to create arrays of curved features on the workpiece. The averaging effect of the corresponding sets of inter-fitting grooves provide for precise repeatability in determining, the relative locations of the centers of each of the curved features in an array of curved features.
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Gill et al., “A Novel Method for the On-Center Turning of Tightly Toleranced Micro Arrays”, presented at the American Society for Precision Engineers Annual Meeting, Oct. 2007, Dallas, TX, USA.
Gill David Dennis
Keeler Gordon A.
Mukherjee Sayan D.
Serkland Darwin K.
Conley William R.
Ross Dana
Sandia Corporation
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