Bush for lockbolt rivet, and associated tool

摘要

PCT No. PCT/EP92/01604 Sec. 371 Date May 20, 1993 Sec. 102(e) Date May 20, 1993 PCT Filed Jul. 15, 1992 PCT Pub. No. WO93/03282 PCT Pub. Date Feb. 18, 1993.The invention concerns a bush (13) to be formed around a lockbolt rivet (4) by means of a tool (14) which applies a longitudinal force, thus producing a high-strength riveted joint. The bush has substantially the shape of a hollow cylinder, but its shape deviates from rotational symmetry in such a way that when it is being formed around the lockbolt rivet (4), a torsional force acting in the direction of arrow (20) is superimposed on the longitudinal force acting in the direction of arrow (19).