Rotary cutting tool, such as a drill, comprising an exchangeable cutting insert, and an exchangeable cutting insert

US7360974B2 · kind B2 · utility

Assignee

• KENNAMETAL INC. · US

Inventors

• Bernhard Borschert · Bamberg, DE
• Dieter Muhlfriedel · Ebermannstadt, DE
• Jürgen Schwägerl · Vohenstrauß, DE
• Ruy Frota de Souza · Latrobe, US
• Michael D. Shultz · Derry, US
• Michael R. McCormick · Greensburg, US
• Robert A. Erickson · Raleigh, US

Key dates

• Filing date: Aug 19, 2004
• Grant date: Apr 22, 2008
• Expiry date: Nov 2, 2025

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T408/9098
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

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 th…