Patent ID: 6354912
Filing Date: 2002-03-12
Classification: B28D

Abstract:
A workpiece cutting method in a dicing machine comprising the steps of:dividing a workpiece into a plurality of cutting areas having a defined plural number of parallel cutting lines extending along an X-axis; sequentially cutting each cutting area by, for each cutting area: cutting the workpiece simultaneously along a first pair of cutting lines with a pair of blades while moving the pair of blades and the workpiece relative to one another along the X-axis, said pair of blades being arranged oppositely at a predetermined interval along a Y-axis that is perpendicular to the X-axis, said interval corresponding to the sum of the pitch distances of half of said defined plural number of cutting lines; after cutting the workpiece along the first pair of cutting lines, moving each of said pair of blades by one cutting line pitch in the same direction, and cutting the workpiece simultaneously along a second pair cutting lines; and repeating the steps of moving each of the blades by a cutting line pitch and cutting the workpiece along pairs of cutting lines until all of cutting lines of the cutting area have been sequentially cut from the workpiece.