Search Results

The automatic riveting assembly is not only an instrument to more efficiency, rationalization and increasing the quality, it is also a human factor in the assembly shop. In this time, the healthy of the staff has a high rank and the management of the plants are constrained to keep them free of prejudice. Rivet noise is reduced by using big automatic riveter The injuries of the riveting workers “white fingers” coming by the vibration of the rivetgun is reduced by using recoilless rivetguns and ARAS Unergonomic working positions lying in a duct during riveting assembly will be replaced by a robot system. About the development stages and the increasing of riveting machine dimensions are reported at the Fastec '85 and '93. Now we will present this equipment in another situation. The developing of the recoilless rivetgun in '82 had started the developing of the ARAS. We use the system for automatic assembly of fuselages.

In Germany, 5-axis NC riveting machines have been used for more than 10 years now for the assembly of fuselage shells in aircraft construction. The development of these machines has been constantly advanced but their basic structure has remained unchanged. A weak point analysis has shown that the performance of the machine is primarily limited by the positioning behaviour. Several possibilities have been investigated how a considerable increase in performance could be achieved by alternative construction types. On the basis of a stationary component, all theoretically feasible alternatives with regard to axis and machine frame configuration were examined and evaluated. In addition to known solutions, new construction types suggested themselves and, after a thorough examination, one of these was found to be feasible.