THREAD MILLING TOOL HAVING HELICAL FLUTES

摘要

A thread milling tool (10) includes a proximal shank portion (14) and a distal cutting portion (12). The cutting portion (12) includes at least one thread milling tooth (20) and at least one flute (16) oriented helically, or spirally, about a rotational axis (22) of the tool (10). The helix angle (26) of the thread milling tool (10) is at least 20 degrees. The cutting portion (12) may be configured to form internal or external threads in a workpiece as the cutting portion (12) moves relative to the workpiece.