Cutting tool with chip guiding function and cutting method therefor

摘要

The present invention provides a cutting tool and a cutting method for the cutting tool which enable curl of a chip to be corrected without causing the chip to be jammed and which also allow the chip to be guided by correcting the direction of the chip to a desired one. A cutting tool 1 has a guide groove 5 formed in a raked face 4 and extending from a cutting edge line 5 to guide a chip 10. The guide groove 7 has a smaller width than the chip 10. A part of a rake face 10 side of the chip 10 is fitted into the guide groove 7 to allow the chip 10 to be guided. A cover 8 may be provided on the raked face 4. In place of the guide groove 7, a guide protrusion may be provided.