The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 09, 2019
Filed:
Jun. 10, 2016
Kennametal Inc., Latrobe, PA (US);
Tim Guter, Fürth, DE;
Peter Sollfrank, Waldthum, DE;
KENNAMETAL INC., Latrobe, PA (US);
Abstract
The invention relates to a rotary tool, in particular a drill (), which extends along a longitudinal axis (), having an end face (); a center (); at least two main cutting edges (), each of which extends from the center () outwards towards a cutting corner (); a flute () associated with each main cutting edge (), a flank on the end face (), associated with each main cutting edge (); a rake angle (γ) between the respective main cutting edge () and the flute (); a ground face () which forms a point thinning () in the area of the center (), extends into a radially outer area and defines the rake angle (γ) in the area of the main cutting edge (). The rotary tool is characterized in that the rake angle (γ) formed by the ground face () is constant along the main cutting edge (), and the flank () of the other main cutting edge () is formed by the ground face (). An advantageous, excellent cutting behavior is thereby achieved along the main cutting edge (). The invention further relates to a method for manufacturing the rotary tool, which is then especially simple to produce.