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:
Dec. 01, 2015
Filed:
Mar. 07, 2011
Shi Chen, North Huntingdon, PA (US);
Kent Peter Mizgalski, Stahlstown, PA (US);
Timothy William Halpin, Nuremberg, DE;
John James Barry, Ennis, IE;
Gerd Willi Heubeck, Fuerth, DE;
Shi Chen, North Huntingdon, PA (US);
Kent Peter Mizgalski, Stahlstown, PA (US);
Timothy William Halpin, Nuremberg, DE;
John James Barry, Ennis, IE;
Gerd Willi Heubeck, Fuerth, DE;
KENNAMETAL INC., Latrobe, PA (US);
Abstract
A cutting insert incorporates a pre-formed discrete cutting tip which wraps around a curved cutting corner of the insert. The cutting tip includes a top layer and a bottom layer made of a relatively harder material than the top layer. In one embodiment, the bottom layer is made of polycrystalline diamond (PCD) or a polycrystalline cubic boron nitride (CBN) material and the top layer is made of cemented carbide. The cutting insert may further incorporate a chip control structure formed in the cutting tip including a plurality of facets formed on each side of a centerline for providing chip control during a cutting operation. The chip control structure can be formed in a two-step process to expose a portion of the bottom layer. The discrete cutting tip can be brazed to the cutting insert prior to forming the chip control structure.