| 摘要 |
<p>A roughing milling cutter having a plurality of spiral flutes defining the leading edges of the cutting teeth. The cutting teeth are formed as a series of stepped serrations, the circumferentially adjacent stepped serrations defining a helix extending axially around the periphery of the cutter. The helix angle of the serrations is substantially greater than the helix angle of the flutes and each serration defines an axially inclined surface terminating in a shoulder and having both radial and axial clearance.</p> |
