Patent ID: 6705929
Filing Date: 2004-03-16
Classification: B08B,B24B

Abstract:
A polishing machine including a polishing plate having an upper face covered with a polishing cloth, a driving mechanism for rotating said polishing plate, a center roller arranged in a center of and above the polishing plate, a work plate arranged over said polishing cloth and on which a work piece to be polished is adhered and whose outer circumferential face contacts an outer circumferential face of said center roller such that the work piece contacts the polishing cloth, a press head for pressing the work plate onto the polishing â€œcloth, a slurry feeding mechanism for feeding slurry to the polishing cloth, and a cloth cleaning device, the cloth cleaning device comprising:â€ an arm movable in a plane parallel to the polishing cloth between a first position above the polishing cloth and a second position outside of the polishing cloth; a jet nozzle attached to said arm for directing high pressure water toward the polishing cloth; and an enclosing member enclosing said jet nozzle to prevent the high pressure water directed out from said jet nozzle from scattering, said jet nozzle being oriented toward the center roller such that the high pressure water is directed toward a part of the polishing cloth in the vicinity of the center roller when said arm moves said jet nozzle close to the center roller.