Patent ID: 6159081
Filing Date: 2000-12-12
Classification: B24B

Abstract:
A workpiece edge mirror-polishing method for polishing a disc-shaped workpiece having an outside diameter, front and rear planes and chamfered outer circumferential edges on said front and rear planes, said method comprising the following steps:rotating at a desired speed a plurality of cylindrical polishing drums having outer circumferences and having work surfaces on said outer circumferences wherein said polishing drums are located at an interval smaller than the diameter of said workpiece;rotating at a desired speed said workpiece while contacting said circumferential edge on said front plane with the work surfaces on the outer circumferences of the plurality of said polishing drums at the same time for polishing;turning said workpiece upside down; androtating at a desired speed the workpiece that has been turned upside down while contacting said circumferential edge on said rear plane with the work surfaces of the plurality of polishing drums at the same time for polishing.