TWI853315B

Provided are a composite cutting tool, which can cut even a thick workpiece without a problem, and a method for manufacturing highly efficiently and easily a resin sheet using such a composite cutting tool. The composite cutting tool according to an embodiment of the present invention has: a main body which rotates around a rotation axis; a cutting blade formed on the outer periphery of the main body and having a blade tip, the inclined surface, and the flank surface; and an abrasive unit formed as a protrusion unit having the file-like surface on a portion of the flank surface of the cutting blade. The method for manufacturing the resin sheet according to an embodiment of the present invention comprises: forming a work by overlapping a plurality of resin sheets; and cutting the outer peripheral surface of the work using the above composite cutting tool.