Method for fixing a plurality of workpieces via a rivet element
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorsJulia Wagner, Maximilian Wilhelm, Stephan Lehner
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Abstract
A method for fixing a plurality of workpieces via a hollow rivet element with an open setting end and a closed closing end. The method includes passing the rivet element through mutually aligned openings of the workpieces. The method also includes introducing a fluid, in particular air, under high pressure from the setting end of the rivet element in a hollow space of the rivet element. The method also includes plastically deforming and setting of the rivet element by the fluid at the closed closing end of the rivet element.
Claims10
A method for fixing a plurality of workpieces with a riveting element that is hollow and has an open setting end and a closed closing end, the method comprising the steps of:
- passing the riveting element through openings in the workpieces;
- selecting a given pressure that will cause a given clamping length of the riveting element;
- introducing air, at the given pressure from the setting end of the riveting element into a cavity of the riveting element;
- plastically deforming and setting the riveting element by the air at the closed closing end of the riveting element;
- introducing the air at a pressure higher than the given pressure into the cavity of the riveting element, the higher pressure being a pressure that causes tightening of a connection of the workpieces, wherein a shank and/or the closing end have at least one forming portion which has a different deformability compared with other portions of the shank and/or of the closing end;
- and removing a portion of the rivet at an intended tear portion on the forming portion.
Dependencies are inferred from the claim text.