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:
Sep. 07, 2021
Filed:
Mar. 07, 2019
Kennametal Inc., Latrobe, PA (US);
Xiangdong D. Fang, Greensburg, PA (US);
Ruy Frota De Souza Filho, Latrobe, PA (US);
David J. Wills, Greensburg, PA (US);
Joe G. Slusarcyk, Derry, PA (US);
Manuel Wacinski, Nuremberg, DE;
KENNAMETAL INC., Latrobe, PA (US);
Abstract
A rotary cutting tool includes a replaceable cutting insert, a pocket portion for holding the cutting insert, and a chip flute portion having a plurality of helical flutes. An internal coolant passage is formed in the chip flute portion and has both a twisted geometry and a 'see-through' central portion. The internal coolant passage is polygonal in cross-sectional shape having a number of cusps equal to the number of flutes. The internal coolant passage greatly increases coolant flow area, while maintaining the stiffness and rigidity of the cutting tool. A method includes forming the internal coolant passage using additive manufacturing such that the internal coolant passage has a 'see-through' central portion and a twisted geometry.