Patent ID: 9073135
Filing Date: 2015-07-07
Classification: B23D,B28D

Abstract:
1. A method for slicing wafers from a workpiece, the method comprising: providing a workpiece; providing a wire guide roll having a grooved coating with a specific thickness; providing a fixed bearing respectively associated with the wire guide roll; providing a sawing wire including wire sections disposed in a parallel fashion on the wire guide roll; moving the wire sections of the sawing wire relative to the workpiece so as to perform a sawing operation; cooling the wire guide roll using a channel at least partially disposed inside the wire guide roll; and cooling the fixed bearing independently of the wire guide roll; measuring an axial change in a length of the grooved coating of the wire guide roll during the sawing operation so as to provide a measurement; generating a first and a second regulation signal based on the measurement; and regulating the cooling of the wire guide roll using the first regulation signal and regulating the cooling of the fixed bearing using the second regulation signal.