Rivet Nuts Improve Production at GM Assembly Plant
A fastener handling system solved the problem. The fastener handling system uses an escape-and-blow mechanism to deliver the fasteners to a receiver head, eliminating the most time-consuming part of the previous operation. The handling system also eliminated the costly problem of fasteners dropping on the floor. The system’s design includes a modular supply hopper, vibratory bowl feeder and an integrated electric-drive power screwdriver.
Rivnut fasteners are internally threaded fasteners produced by Bollhoff Rivnut Inc. (Kendallville, IN) that can be installed in seconds by a single operator from one side of the work. When in place, they form secure nut plates with clean threads for screw attachments. The fasteners stay firmly anchored, even when repeatedly assembled. They are available in more than 5,000 sizes and styles. The style used on General Motor’s sport utility vehicles features thin-wall shanks that compress during installation, forming large flanges. These flanges spread loads evenly over a large area. This provides outstanding pull-out resistance. Other benefits include wide grip range, and exceptional torque and thread strength.