Abrading – Machine – Combined
Patent
1998-09-03
2000-11-28
Scherbel, David A.
Abrading
Machine
Combined
451 5, 451 11, 451 66, 451 44, 451257, 451260, B24B 726
Patent
active
061528099
ABSTRACT:
An apparatus for grinding and polishing without visible flaws a variety of different size and shape full-lead crystal workpieces. A conveyor supports the workpieces and runs through the apparatus housing. A workpiece calibrator is located proximate the entrance end of the housing. A plurality of grinders having an abrasive grinding surface within a range of coarseness are located downline of the calibrator. A plurality of polishers are located downline of the grinders. Control means raises and lowers the calibrator, grinders and polishers relative to the belt conveyor and the unfinished surface of the workpiece supported thereon.
A method of automatically making a finished full-lead crystal ornament using an automated machine having a housing, conveyor, a plurality of motor-driven grinding heads, and a plurality of motor-driven polishing heads. The unfinished lead-crystal blank is oriented on the conveyor such that an unfinished work surface of the blank is unobstructed by and extends outwardly from the conveyor. The grinding heads and polishing heads are calibrated to a predetermined location relative to the conveyor and the unfinished work surface of the blank. The work surface is ground by each of the succeeding grinding heads having a less coarse abrasive grinding surface and then polished by each of the next succeeding polishing heads. The blank is reoriented on the conveyor so that a different unfinished work surface is unobstructed by and extends from the conveyor. The grinding and polishing steps are then repeated on each unfinished work surface.
REFERENCES:
patent: 4787178 (1988-11-01), Morgan et al.
patent: 5810642 (1998-09-01), Bando
A. Earley John F.
Konieczny Joseph M.
Nguyen George
Scherbel David A.
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