Patent ID: 6213853
Filing Date: 2001-04-10
Classification: B24B,H01L

Abstract:
An integral machine for polishing, cleaning, rinsing and drying workpieces comprising:a load/unload station having a plurality of platforms for receiving cassettes of workpieces to be polished, cleaned, rinsed and dried;first transfer means for retrieving said workpieces from said cassettes;an index station for receiving unpolished workpieces from said first transfer means and for holding polished workpieces prior to further processing;a polishing station for polishing unpolished workpieces;second transfer means for transferring unpolished workpieces from said index station to said polishing station, and for transferring polished workpieces to said index station;a cleaning station for cleaning, rinsing and drying polished workpieces;third transfer means for transferring polished workpieces from said index station to said cleaning station;fourth transfer means for transferring cleaned, rinsed and dried workpieces from said cleaning station back to said cassettes; anda mapping system for monitoring location and position of each workpiece within the cassettes.