Patent ID: 6913526
Filing Date: 2005-07-05
Classification: B24B

Abstract:
1. A polishing machine for polishing a periphery of a semiconductor wafer in which the semiconductor wafer having a notch portion or an orientation flat marking portion in the periphery is rotated, a rotating grinding stone is made to come into contact with the periphery of the semiconductor wafer so as to polish the periphery and the notch portion or orientation flat marking portion, the polishing machine comprising: a grinding stone shaft tilting mechanism capable of changing a tilting angle θ of a rotary shaft of the grinding stone to a tangential direction of the periphery of the semiconductor wafer and also capable of changing a tilting direction of the rotary shaft of the grinding stone so as to always maintain an angle with respect to the tangential direction according to a shape of the periphery of the semiconductor wafer, the grinding stone being a tilting fulcrum both for changing a tilting angle θ of the rotary shaft and for changing a tilting direction of the rotary shaft.