Patent ID: 6152809
Filing Date: 2000-11-28
Classification: B24B

Abstract:
An apparatus for grinding and polishing the face surfaces of a variety of different size and shape full-lead crystal workpieces, comprising;a) a housing having an entrance end and an exit end;b) a conveyor running lengthwise downline through said housing from the entrance end to the exit end, said conveyor supporting a variety of different size and shape full-lead crystal workpieces;c) means for automatically processing without visable flaws full-lead crystal workpieces having a variety of sizes and shapes, including:i) a workpiece calibrator proximate the entrance end of said housing;ii) a plurality of grinders located downline of said calibrator, said grinders having an abrasive grinding surface within a range of coarseness;iii) a plurality of polishers located downline of said grinders, said polishers having an abrasive polishing surface;iv) control means for raising and lowering said calibrator, grinders and polishers relative to said belt conveyor and the unfinished surface of the workpiece supported thereon.