METHOD OF FASTENING A RIVET ELEMENT AND CORRESPONDING FASTENING SYSTEM THEREFOR

摘要

The invention relates to a method of fastening a rivet element to a workpiece, in particular to a sheet metal part, which has a preshaped hole provided for the reception of a rivet section of the rivet element and which is made planar at least in the region around the preshaped hole. Prior to the fastening process, the workpiece is positioned at a well-defined spacing from a contact surface of a die by means of at least one movably and/or elastically configured spacer of the die for the reshaping of the rivet section, so that a gap is formed between a wall of the hole and a punch of the die, which is provided for the reshaping of the rivet section. The rivet section is introduced into the gap in the course of the fastening process and is reshaped by the punch in order to engage behind the workpiece in the region of the hole.

主权项

1. A method of fastening a rivet element (10) to a workpiece (12) which has a preshaped hole (26) provided for the reception of a rivet section (32) of the rivet element (10) and which is made planar at least in a region around the preshaped hole (26),
wherein, prior to the fastening process, the workpiece (12) is positioned at a well-defined spacing (D) from a contact surface (18) of a die (14) by means of at least one movably and/or elastically configured spacer (16) of the die (14) for the reshaping of the rivet section (32), so that a gap (30) is formed between a wall (28) of the hole (26) and a punch (24) of the die (14), which is provided for the reshaping of the rivet section (32), and wherein the rivet section (32) is introduced into the gap (30) in the course of the fastening process and is reshaped by the punch (24) in order to engage behind the workpiece (12) in the region of the hole (26).