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: Neugebauer, Reimund; Mauermann, R.; Grützner, R.

presentation urn:nbn:de:0011-n-723742 (9.1 MByte PDF)
MD5 Fingerprint: 8007bf1942f95810d083fe28acd31685
Created on: 30.3.2011

Institut National des Sciences Appliquees, Lyon:
11th ESAFORM Conference on Material Forming 2008 : Proceedings Mini Symposia. Lyon, France, 23, 24 and 25 april 2008
Berlin: Springer, 2008 (International Journal of Material Forming 1.2008, Supplement 1)
ISSN: 1960-6206
Conference on Material Forming <11, 2008, Lyon>
Conference Paper, Journal Article, Electronic Publication
Fraunhofer IWU ()
joining by forming; hydroforming; spot joining; clinching; self-pierce riveting; process integration

Manufacturing of complex tube-workpieces often requires medium-based forming processes. Because of the inaccessibility to the inside of the parts, joining of attached parts is difficult. Additional part handling and process steps are necessary. A loss of the high accuracy of hydroformed parts is disadvantageous especially by shape distortion during thermal joining. One solution is the integration of the joining operation into the hydroforming-process. A new integration method is a combination of hydroforming and spot-joining. Spot joining means a version of joining by forming like clinching or self-pierce riveting or fluid molding of functional elements, e.g. with inside or outside thread. The high pressure fluid takes over the task of the die during hydrojoining. This integrated die-less procedure also increases the range of possibilities which are not available with standard techni.