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. 20, 2004
Filed:
Oct. 16, 2000
Lev M. Dvoskin, Aptos, CA (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
A cutting tool for machining stainless steel including a tool nose geometry with several facets. The tool includes a nose comprising a leading edge which chips and removes stock from the edge surface, the leading edge bearing adjacent a calibration edge post which the bore is rotated to thereby calibrate the bore. The calibration edge or facet has a length equal to the feed per revolution. This same side has a cutting angle length equal to zero. A hollow cathode discharge method of TiCN coating with no more than three micron thickness is used. This coating method creates a high density of plasma vapor, does not contain micro particles, produces a very dense film which completely replicates the finish of the surface being coated, prevents buildup and increases tool performance. The leading facet preferably has a cutting edge angle with the tool direction of travel through the bore surface equal to 45°.