A High Reliable Automated Percussive Riveting System for Aircraft Assembly 2019-01-1335
Percussive riveting is a widely used way of fastening in the field of aerospace assembly, which used to be done manually. Nowadays, replacing the traditional percussive riveting with automated percussive riveting becomes a trend worldwide, which improves the quality of riveting significantly. For the automated riveting system used in aerospace assembly, reliability is of great importance, deserving to be deeply researched and fully enhanced. In this paper, a high reliable automated percussive riveting system is proposed. The system consists of the hammer part and the bucking bar part. And both parts have been optimized to enhance the reliability. In the hammer side, proximity switches are fully used to detect the state of rivet delivering and inserting. In the bucking bar side, a reliable displacement measurement system is innovatively integrated to measure the exposed shank length of the rivet before riveting and the upsetting head height after riveting. By measuring the exposed shank length of the rivet before riveting, the riveting system can judge whether the rivet has been inserted into the hole and whether the specification of the rivet is appropriate. By measuring the upsetting head height after riveting, the riveting system can realize online monitoring of riveting quality. To reduce the harmful impact of vibration during percussive riveting, vibration absorption measure is adopted in both the hammer part and the bucking bar part. All the above measures enhance the reliability of the riveting system. At last, an experiment is carried out, the result indicates that the automated percussive riveting system can conduct high-quality and high-reliable riveting.
Yunfei Fan, Long Yu, Yilian Zhang, Qingzhen Bi, Yuhan Wang