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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.:

US 9746030 B1

PDFFull Text
Date of Patent:
Aug. 29, 2017

Filed:

Apr. 03, 2012

Method for producing an extruded bearing journal

Applicant:

Thomas Keppler-ott, Feldkirch, AT;

Inventor:

Thomas Keppler-Ott, Feldkirch, AT;

Assignee:

THYSSENKRUPP PRESTA AKTIENGESELLSCHAFT, Eschen, LI;

Attorney:

thyssenkrupp North America, Inc.

Primary Examiner:

Sarang Afzali

Assistant Examiner:

Darrell C Ford

Int. Cl.
CPC ...
B21K 1/00 (2006.01); B21D 53/10 (2006.01); B21D 53/00 (2006.01); B23P 17/00 (2006.01); B21J 13/00 (2006.01); B21D 22/00 (2006.01); F16C 33/64 (2006.01); B21J 5/02 (2006.01); B21K 1/76 (2006.01); F16D 3/41 (2006.01); B21C 23/14 (2006.01); B21C 26/00 (2006.01); B23P 15/00 (2006.01); F16C 33/58 (2006.01);
U.S. Cl.
CPC ...
F16C 33/64 (2013.01); B21C 23/14 (2013.01); B21C 26/00 (2013.01); B21J 5/025 (2013.01); B21K 1/763 (2013.01); B23P 15/003 (2013.01); F16C 33/583 (2013.01); F16D 3/41 (2013.01); F16C 2220/48 (2013.01); Y10T 29/49668 (2015.01);
Abstract

In a method for producing an extruded bearing journal, the bearing journal is extruded in an extrusion tool by means of at least one extrusion punch and, after the extrusion of the bearing journal, reworking of the bearing journal is performed in order to improve the cylindricity of the bearing journal at least over a section of the longitudinal extent of the bearing journal. During the reworking, the bearing journal is arranged, at least over a section of its longitudinal extent adjoining its free end, in a cavity that is delimited in a radial direction of the bearing journal by a wall surface surrounding the lateral surface of the bearing journal, and a reworking punch which is movable in the longitudinal direction of the bearing journal is moved toward the free end of the bearing journal and is pressed against the face surface of the bearing journal and, in this way, a plastic deformation of the bearing journal, with a flow of material of the bearing journal, is effected.

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