Abrading – Abrading process – Glass or stone abrading
Patent
1998-03-25
1999-09-14
Scherbel, David A.
Abrading
Abrading process
Glass or stone abrading
451 42, 451 65, 451178, 451231, 451362, B24B 730, B24B 900, B24B 4100
Patent
active
059513764
ABSTRACT:
For two-side processing of optical lenses, the invention provides that blanks to be used for each lens body (7) comprise a chucking extension (18) whereby a single machine is sufficient for implementing the procedure. In addition to workpiece spindles (1, 2) as well as tool spindles (4, 5) with coarse tools (8) and finishing tools (9), the machine also includes an unloading device (10) and a loading device (13) which in successive interacting operations take the lens body (7) when processed on one side and at the circumference from a chucking tool (12) of the tool spindle (1) and turn it round for centered insertion in its inverted position into a chucking tool (15) of the tool spindle (2) for processing on the other side. The workpiece spindles (1, 2) may be mounted parallel to each other on a horizontally displaceable and vertically adjustable feed slide (3). A feed carriage (6) may displace and slew the tool spindles (4, 5) together with the unloading device (10) around a horizontal B axis. The loading device (13) is slewable around a further horizontal axis (C) between the workpiece spindles (1, 2) and the tool spindles (4, 5).
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Hoffmann Philip J.
Opto Tech GmbH
Scherbel David A.
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