Felser, A., Zieve, P., and Ernsdorff, B., "Use of Synchronized Parallel Grippers in Fastener Injection Systems," SAE Technical Paper 2015-01-2515, 2015, doi:10.4271/2015-01-2515.
A new style of rivet injector is in production use on a variety of fastening machines used by major aircraft manufacturers. In this injector the opposing sides of the rivet guide blocks are attached to the arms of a parallel gripper.We have implemented the parallel gripper in both vertical axis and horizontal axis riveting applications. It is equally effective in both orientations. We have implemented the parallel gripper rivet injector on headed rivets, threaded bolts, ribbed swage bolts and unheaded (slug) rivets.