Verfahren zum Innenhochdruckumformen eines Hohlprofiles

摘要

The invention relates to a method for hydroforming a hollow profile (12) in a shaping tool. According to the inventive method, a fluid with a high pressure PI is passed into the hollow profile (12). Said hollow profile has a transitional zone of a varying wall thickness in the region of an edge (18 to 21) to be shaped. The inventive method is further characterized in that the shape of the hollow profile (12) is selected initially in such a way that starting from the edge (18 to 21) an enlargement (22 to 25) extends somewhat into the wall section (14, 16) of smaller wall thickness, thereby avoiding the formation of constrictions during shaping while obtaining favorable edge geometries.