Patent ID: 6361404
Filing Date: 2002-03-26
Classification: B28D,Y10T

Abstract:
A method of cutting a workpiece with a precision cutting apparatus comprising at least a chuck table for holding the workpiece, and first and second cutting means for cutting the workpiece held by the chuck table, the first cutting means including a first spindle unit to which a first blade is to be fixed, and the second cutting means including a second spindle unit to which a second blade is to be fixed, the first and second cutting means being series-arranged in linear alignment with their first and second blades opposing to each other, the first and second cutting means and the chuck table being adapted to move relative to each other in the X-axial direction across the Y-axial direction in which the axes of the first and second spindle units are aligned to permit the workpiece held by the chuck table to be cut in the X-axial direction, characterized in that it comprises the steps of:putting the first and second blades on the opposite sides of the workpiece in the Y-axial direction; moving the first and second blades step by step toward each other, wherein each blade advances an incremental distance toward the center of the workpiece at the same time; and making the first and second cutting means and the chuck table to move relative to each other in the X-axial direction to cut the workpiece, wherein the first and second blades cut the workpiece parallel relative to each other.