초록 ▼

A method and apparatus for riveting two workpieces (10, 12) together by simultaneously upsetting both ends of a slug rivet (R) while maintaining the outer surface (16) of one of the workpieces (10) in a substantially constant fixed work plane (20) during riveting. The workpieces are held between two

A method and apparatus for riveting two workpieces (10, 12) together by simultaneously upsetting both ends of a slug rivet (R) while maintaining the outer surface (16) of one of the workpieces (10) in a substantially constant fixed work plane (20) during riveting. The workpieces are held between two clamps (18, 28), one of the clamps (18) establishing the fixed work plane. After drilling, a slug rivet is placed within the drilled hole, and then a first riveting ram (42) is moved to establish a desired die cavity. A second riveting ram (58) is then moved until it just contacts the rivet. The rams (42, 58) are then simultaneously moved towards each other at equal rates to simultaneously form upset heads on both ends of the rivet.

대표청구항 ▼

Method of riveting two or more side-by-side workpieces together, the workpieces being provided with aligned apertures in which a slug rivet has been received, one side of one workpiece establishing a substantially fixed work plane; said method comprising the following steps: providing first and seco

Method of riveting two or more side-by-side workpieces together, the workpieces being provided with aligned apertures in which a slug rivet has been received, one side of one workpiece establishing a substantially fixed work plane; said method comprising the following steps: providing first and second riveting ram means aligned with the slug rivet, the first riveting ram means being disposed adjacent said one side of said one workpiece, and the second riveting ram being disposed away from the outer side of another workpiece; moving the first riveting ram means with respect to the work plane to establish a first desired die cavity; moving the second riveting ram means towards the first riveting ram means until both ends of the slug rivet are just in contact with both riveting ram means; and simultaneously moving the first and second riveting ram means towards each other at equal rates to simultaneously form upset heads on both ends of the slug rivet while said one side of the one workpiece continues to be disposed in the work plane.