FASTENING STRUCTURE WITH A RIVET

摘要

A fastening tool draws a mandrel (5) to allow a caulking portion (7) of the mandrel to deform a stem (4) of a rivet (2) so that workpieces (41,42) are fastened together. The fastening tool used in this process includes a nosepiece (18) having a protrusion (31). During caulking, the protrusion of the nosepiece applies a force on a flange of the rivet (2) to form a recess (44A) in the rivet flange and thereby peel a coating of the workpieces. As a result, electrical conductivity between the workpieces and the rivet is obtained.