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:
Mar. 06, 2012
Filed:
May. 16, 2007
Dennis Quinto, North Tonawanda, NY (US);
Christian Wohlrab, Feldkirch, AT;
Jürgen Ramm, Maienfeld, CH;
Dennis Quinto, North Tonawanda, NY (US);
Christian Wohlrab, Feldkirch, AT;
Jürgen Ramm, Maienfeld, CH;
Oerlikon Trading AG, Truebbach, Truebbach, CH;
Abstract
The invention provides a single or a multilayer PVD coated sharp edged cutting tool, which can at the same time exhibit satisfactory wear and thermochemical resistance as well as resistance to edge chipping. The cutting tool comprises a sintered body made of a cemented carbide, a CBN, a cermet or a ceramic material having a cutting edge with an edge radius R, a flank and a rake face and a multilayer coating consisting of a PVD coating comprising at least one oxidic PVD layer covering at least parts of the surface of the sintered body. In one embodiment the edge radius Ris smaller than 40 μm, preferably smaller than or equal to 30 μm. The covered parts of the surface preferably comprise at least some parts of the sharp edge of the sintered body.