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. 15, 2016
Filed:
Nov. 17, 2011
Rico Demuth, Wiesa, DE;
Jens Gentzen, Lichtenau, DE;
Juergen Meusel, Dittmannsdorf, DE;
Alexander Paul, Reichenbach, DE;
Daniel Paul, Burkhardtsdorf, DE;
Robert Reichelt, Frankenberg/Sachsen, DE;
Frank Schieck, Lauter, DE;
Rico Demuth, Wiesa, DE;
Jens Gentzen, Lichtenau, DE;
Juergen Meusel, Dittmannsdorf, DE;
Alexander Paul, Reichenbach, DE;
Daniel Paul, Burkhardtsdorf, DE;
Robert Reichelt, Frankenberg/Sachsen, DE;
Frank Schieck, Lauter, DE;
THYSSENKRUPP PRESTA TECCENTER AG, Eschen, LI;
Abstract
The invention relates to a method for producing a tubular structural part by means of hydroforming. An assigned end of a supporting tube () is inserted into an opening in an end piece () and then widened by a pressurized fluid being applied to it and is connected to the end piece () with a press fit. The opening () has a first portion () with a first inner cross section, which is greater than the outer cross section of the assigned end of the supporting tube (). According to the invention, the first portion () is adjoined by a second portion (), in a step-shaped manner so as to form an edge (). The inner cross section of the second portion () is smaller than the outer cross section of the assigned end of the supporting tube (). In the method according to the invention, the supporting tube () is first inserted with its corresponding end into the first portion (), before the edge () cuts into the material of the supporting tube () in a further pushing-in movement.