Method for the production of sheet metal parts and device therefor

A method for producing a sheet-metal part, wherein the method comprises:

• preforming a sheet into a metal preform in a preforming tool, wherein the metal preform is configured as an open profile with an opening and in its longitudinal extent has at least one flangeless portion and, at least in regions, surplus sheet material;
• and
• final forming of the metal preform into a sheet-metal part in a calibration tool comprising at least one calibration punch and at least one calibration die, in which the surplus sheet material in the metal preform is compressed by a relative movement between the calibration punch and the calibration die;
• wherein the metal preform is laid in the calibration tool such that its opening points downward and is positioned on the calibration punch, and that during final forming, because of the relative movement, the edge of the metal preform present at least in the flangeless portion comes into contact with a punch shoulder of the calibration punch rests thereon and is pressure-loaded;
• wherein during the relative movement, the calibration die passes by the punch shoulder of the calibration punch, at least in the region of the flangeless portion of the metal preform, with a minimum possible gap corresponding to between >0% and 20% of the material thickness of the inserted sheet, before the final forming is completed.