Blind flow - screw connection of materials

摘要

It is a two-part mechanical fastening element comprising an elongated body having a bore, which slidably carries a mandrel, which is suitable to bring the body in engagement described. The fastening element body has one or more protrusions on its outer surface. In one aspect of the protuberances form a thread. The fastening element is designed in such a way that it has an opening in a stack of two or more workpieces and penetrates into the forms. In order in the stack of the workpieces to secure and to form a sturdy connection, the fastening body is deformed by the mandrel, as a result of which the body is extended, so that a body end in a surface of the workpiece stack, and the one or more protrusions with the walls of the opening are brought into engagement. The method for using such a fixing element for the fastening of sheet-like workpieces on a nonferrous material - or polymer are each other.n="23"