Jaw assembly for a rivet setting tool

摘要

A rivet setting tool has a nosepiece 11 at the front of a housing 10. An inner housing 20 has a taper section 22 towards the front and an end cap 21 at the rear. A draw bar 24 is located within the inner housing and has a conical section 25 which cooperates with the taper section. One or more rows of ball passages 26 are arranged circumferentially around the conical section and in which balls are located for a degree of radial movement. The stem 3 of a rivet 1 is passed along a hollow passage 28 within the conical section. A spring 29 biases the conical section towards the taper section which causes the balls to be forced into engagement with the stem to grip it. Rearward movement of the inner housing intensifies the gripping pressure and enables the stem to be severed from the rivet body 2.