Loading patent…
AssigneeKennametal Inc.
InventorsBernhard Borschert, Dieter Mühlfriedel, Jürgen Schwägerl, Ruy Filho Frota De Souza, Michael D. Shultz, Michael R. McCormick, Robert A. Erickson
Estimating the term…
A rotary cutting tool that is composed of a tool shank with at least one chucking groove or chip flute and one exchangeable cutting insert. At the tip of the shank a recess for accommodating the cutting insert is provided. The tool shank, on its circumference, has a limb with a bearing surface that is inclined relative to the tool axis and that corresponds to a likewise inclined bearing surface on a wing of the cutting insert. The inclination of the bearing surfaces produces an axial force that retains the cutting insert on the tool shank. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.
Rotary cutting tool composed of a tool shank with at least one chucking groove and an exchangeable cutting insert with a recess for accommodating the cutting insert at the tip of the shank and in the wall of the chucking groove delimited on the shank-end by a rim against which the shank-end narrow side of the cutting insert rests and the cutting insert is provided with a fastening pin that is accommodated in a location opening of the tool shank, which is concentric relative to the tool axis, characterized in that the tool shank, on its circumference, is provided with a limb with a bearing surface bordering on the circumference of the tool shank and inclined relative to the tool axis and corresponding to a likewise inclined bearing surface on a wing of the cutting insert, where the orientation of the inclination of the bearing surfaces corresponds to the direction of rotation of the tool, and the cutting insert only partly covers the tip of the tool shank, and the bearing surfaces are inclined toward the direction of rotation of the rotary cutting tool to hold the cutting insert in the tool shank during cutting of an object, and the bearing surfaces, relative to the tool axis, have an angle of contact of at least 15° and at most 60°.
Rotary cutting tool composed of a tool shank with at least one chucking groove and an exchangeable cutting insert with a recess for accommodating the cutting insert at the tip of the shank and in the wall of the chucking groove delimited on the shank-end by a rim against which the shank-end narrow side of the cutting insert rests and the cutting insert is provided with a fastening pin that is accommodated in a location opening of the tool shank, which is concentric relative to the tool axis, characterized in that the tool shank, on its circumference, is provided with a limb with a bearing surface bordering on the circumference of the tool shank and inclined relative to the tool axis and corresponding to a likewise inclined bearing surface on a wing of the cutting insert, where the orientation of the inclination of the bearing surfaces corresponds to the direction of rotation of the tool, and the cutting insert only partly covers the tip of the tool shank, and the bearing surfaces are inclined toward the direction of rotation of the rotary cutting tool to hold the cutting insert in the tool shank during cutting of an object, and characterized by a supplemental bearing surface on the limb which is inclining relative to the tool axis opposite the bearing surface of the limb and corresponding with a supplemental bearing surface on the wing of the cutting insert.
A replaceable drill cutting insert comprising:
A rotary cutting tool having a central longitudinal axis, said rotary cutting tool comprising:
A rotary cutting tool having a central longitudinal axis, said rotary cutting tool comprising:
Dependencies are inferred from the claim text.