Compression cutting tool
AssigneeSeco Tools AB
InventorJohn Richard Winebrenner
Life of this patent
Estimating the term…
Abstract
A rotating tool includes a tool body including a first end and a second end. A plurality of first helical flutes extend from the first end of the tool body, each first helical flute of the plurality of helical flutes defining a respective first cutting edge. A plurality of second helical flutes intersect with the first helical flutes at non-zero distances from the first and the second ends of the tool body, each second helical flute of the plurality of second helical flutes defining a respective second cutting edge. The first helical flutes and the second helical flutes are of opposite hands. The first helical flutes have a first pitch and the second helical flutes have a second pitch. A plurality of chip divider recesses are formed along each first cutting edge.
Claims19
A rotating tool, comprising:
- a tool body comprising a first end and a second end;
- a plurality of first helical flutes extending from the first end of the tool body, each first helical flute of the plurality of helical flutes defining a respective first cutting edge;
- a plurality of second helical flutes intersecting with the first helical flutes at non-zero distances from the first and the second ends of the tool body, each second helical flute of the plurality of second helical flutes defining a respective second cutting edge, the first helical flutes and the second helical flutes being of opposite hands, the first helical flutes having a first pitch and the second helical flutes having a second pitch;
- and
- a plurality of chip divider recesses formed along each first cutting edge.
The rotating tool as set forth in claim 7, wherein each first cutting edge is disposed on a clockwise side of its respective first helical flute.
A rotating tool, comprising:
- a tool body comprising a first end and a second end;
- a plurality of first helical flutes extending from the first end of the tool body, each first helical flute of the plurality of helical flutes defining a respective first cutting edge;
- and
- a plurality of second helical flutes intersecting with the first helical flutes at non-zero distances from the first and the second ends of the tool body, each second helical flute of the plurality of second helical flutes defining a respective second cutting edge, the first helical flutes and the second helical flutes being of opposite hands,
- wherein the first helical flutes spiral in one of a clockwise and a counterclockwise direction when the tool is viewed from the first end toward the second end and each first cutting edge is disposed on, respectively, one of a clockwise side and a counterclockwise side of its respective first helical flute, and the first helical flutes having a first pitch and the second helical flutes having a second pitch greater than the first pitch, the second pitch being between 5°-50° larger than the first pitch.
A method of making a rotating tool, comprising:
- determining a depth of a hole to be formed in a workpiece by the rotating tool;
- forming, in a tool body comprising a first end and a second end, a plurality of first helical flutes extending from the first end of the tool body, each first helical flute of the plurality of helical flutes defining a respective first cutting edge, and a plurality of second helical flutes intersecting with the first helical flutes, each second helical flute of the plurality of second helical flutes defining a respective second cutting edge, the first helical flutes and the second helical flutes being of opposite hands, the first helical flutes having a first pitch and the second helical flutes having a second pitch, wherein the second helical flutes and the first helical flutes intersect at a distance from the first end of the tool body determined as a function of the depth of the hole.
Dependencies are inferred from the claim text.