When using a compression riveter, what should the distance between the faces of the dies equal?

When using a compression riveter, the distance between the faces of the dies should equal the total thickness of the assembly being riveted, plus the thickness of the driven head of the rivet. This is critical for ensuring proper compression and the formation of the rivet head against the workpieces being joined.

The reason for needing the total thickness, which includes both the assembly and rivet head thickness, is that proper rivet formation relies on uniform compression across the entire section where the rivet is being installed. If the dies are set too close together, the rivet may not achieve the required deformation to create a secure joint, potentially compromising the integrity of the assembly. Conversely, setting the distance based solely on the assembly thickness or the rivet head thickness separately would not account for the complete dynamic of the rivet being installed, leading to insufficient or incorrect riveting results.

This principle ensures that the rivet is fully seated and correctly deformed to provide optimal strength and stability in the assembled structure.