Patent ID: 11458552

Abstract:
A rotating tool according to one aspect includes a body that extends from a first end to a second end, and the body includes a second helical cutting edge, a second helical flute, a first helical cutting edge, and a first helical flute. The body further includes a reversely-helical cutting edge and a reversely-helical flute from the second helical flute. The reversely-helical cutting edge and the reversely-helical flute are helical reversely to the second helical flute from the second helical flute to the second end, and the reversely-helical flute extends along the reversely-helical cutting edge. The reversely-helical cutting edge is positioned intersecting with an extended line of a trace of the first helical cutting edge and not intersecting with an extended line of a trace of the second helical cutting edge.