Method for tensioning or fixing a workpiece used in the production of vehicle profiles comprises forming a stamp in a surface section of the workpiece to interact with a clamping tool so that the workpiece forms an interlocking connection

Method for tensioning or fixing a workpiece (10) comprises forming a stamp in a surface section of the workpiece to interact with a clamping tool so that the workpiece forms an interlocking connection. Independent claims are also included for the following: (1) Workpiece with a surface section having a stamp; and (2) Clamping tool for clamping the workpiece. Preferred Features: The stamp to be inserted into the flat section is formed on the upper side and the lower side of the workpiece as a corresponding recess or protrusion. The clamping tool has a cross-sectional profile which fits the contour of the stamp. Die Erfindung betrifft ein Verfahren, ein Werkstück und eine entsprechende Einspannvorrichtung zum Einspannen oder Fixieren eines zumindest bereichsweise plattenartig ausgebildeten Werkstückes, wobei in einen plattenartigen Flächenabschnitt (18) des Werkstückes zumindest eine Prägung (12, 14; 120, 122; 124, 126; 132, 134; 142) eingebracht wird, in welcher zumindest ein Spannwerkzeug zum Fixieren des Werkstückes unter Bildung eines Formschlusses eingreift (Figur 1).