TOOLING FOR PRESS RIVETING Russian patent published in 1994 - IPC

FIELD: assembly and riveting work. SUBSTANCE: tooling has bushing 2 provided with internal bead 3 and secured by one end to the shank 1; squeezer 6 provided with form generating surface 5 at one end and with flange 6 located in the bushing 2. The means to rotate the squeeze is made as air passages system which supplies air into the bushing cavity. The air passages system includes bushings located at different height; and rows of radial and tangential nozzles evenly located in a circular position and connected to the common air duct. The squeeze flange section opposite the tangential nozzles is provided with flutes 9. The butt ends of the shank and the bushing bead facing the inner side of the bushing are provided with ring grooves 10 and 11 which are connected to the common air duct 12; the squeeze flange is placed into the bushing with a clearance. The squeeze goes up, rotates, and self-alines along the rivet axis as the air is supplied via air duct 12, which ensures a better quality of riveting without displacement of the form generating head relative the rivet axis. The air inflow acting on the squeeze from all sides, cools it which results in the increased durability of the tooling. EFFECT: increased quality of riveting; increased durability of tooling. 6 dwg