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:
Jan. 17, 2017
Filed:
Nov. 26, 2010
Christian Burgin, Gelterkinden, CH;
Thomas Christoffel, Wittnau, CH;
Andreas Matt, Murg, DE;
Patrick Stemmelin, Moernach, FR;
Mihai Vulcan, Hofstetten, CH;
Christian Burgin, Gelterkinden, CH;
Thomas Christoffel, Wittnau, CH;
Andreas Matt, Murg, DE;
Patrick Stemmelin, Moernach, FR;
Mihai Vulcan, Hofstetten, CH;
Hatebur Umformmaschinen AG, Reinach, CH;
Abstract
In order to produce a formed part furnished with a through hole, a rod material is advanced by a defined length in the direction of its lengthwise extension into a forming die through a stationary guide and then immobilised by a clamping arrangement that engages with it circumferentially. The end portion of the rod material is then axially swaged by a swaging tool and is thus shaped into a disc, the circumference of which is defined by the forming die. The disc is then penetrated axially by a dishing tool and impact extruded at the same time, the displaced material flowing between the dishing tool and the inner circumferential wall of the forming die. The formed part located in the forming die is then rotated coaxially relative to the rest of the rod material and thereby separated from the rest of the rod material by torsion shearing.