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US 2010/0008740 A1Published application
Rotary cutter
AssigneeBlount, Inc.
InventorsTodd Gerlach, Monty Lightner
Life of this patent
Estimating the term…
Abstract
Embodiments provide a helical cutting tool and a helical cutting bit that may be utilized to cut various materials. The helical cutting bit and cutting tool include a variety of features to increase the efficiency of the cutting tool during cutting operations.
Claims29
A rotary cutting bit, comprising:
- a cylindrical body having a first distal end portion and a second distal end portion;
- a helical flute formed in or on a wall of the cylindrical body between the first distal end portion and the second distal end portion, wherein the helical flute defines a helical cutting edge around the periphery of the cylindrical body;
- one or more chip breakers disposed in the helical flute, wherein the plurality of breakers are configured to form a plurality of helical cutting members from the helical cutting edge
A rotary cutting system comprising:
- a cutting bit having a first distal end portion and a second distal end portion, wherein the cylindrical member comprises a plurality of helical cutting members disposed around a periphery of the cutting bit generally between the first distal end portion and the second distal end portion;
- a stabilizer having an outer end portion adapted to couple with the second distal end portion of the cutting bit such that the cutting bit may be rotatably supported by the end portion, the stabilizer having a kerf engaging portion having a width that is generally less than or equal to an overall width of the cutting bit;
- a motor coupled to the stabilizer, and further drivably coupled to the first distal end portion of the cutting bit, wherein the motor is configured to rotatably drive the cutting bit about an axis.
A method, comprising:
- grinding a first helical flute into a wall of a cylindrical member at a helix angle, wherein the first helical flute provides a volume for material dislodged during a cutting operation;
- grinding a heel into the first helical flute to provide a cutting edge on the first helical flute, wherein the heel is configured as a depth gauge;
- and
- forming one or more serrations on the first helical flute, wherein the one or more serrations interrupt contact of the first helical flute with the material.
1 more element
Dependencies are inferred from the claim text.