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:
Apr. 01, 2003
Filed:
Jun. 20, 2000
Dietmar Bolkart, Bietigheim-Bissingen, DE;
Gerhard Scheer, Loechgau, DE;
Konstantin Baxivanelis, Besigheim, DE;
Michael Koecher, Stuttgart, DE;
Jacek Kruszynski, Stuttgart, DE;
Komet Praezisionswerkzeuge Robert Breuning GmbH, Besigheim, DE;
Abstract
The invention relates to a drilling tool for machine tools and to a method for the production thereof. The drilling tool has at least one chip conveyor groove ( ) and at least one functional channel ( ). In order to produce the body of the drill ( ), the wall of a tubular metal blank is simultaneously impinged upon by substantially radially oscillating form-giving forces in several forming sections spread over the periphery, moving in an axial direction along the surface of the blank, whereby at least one chip conveyor groove ( ) is shaped and at least one functional channel ( ) is formed. When the chip conveyor grooves ( ) are formed on at least two interspaced forming sections in a peripheral direction in the wall of the blank ( ), the parts of the wall in the area of two opposite-lying chip conveyor grooves ( ) come to rest against each other in a sealed manner, defining at least two functional channels ( ) on the inner surfaces thereof. The joint ( ) thus formed can be closed by means of cold welding or soldering.