Abstract: A tool for installing and/or removing a fastener includes a body having an opening having a center axis. The tool includes a plurality of grips coupled to the body and angularly spaced apart from each other around the opening. At least one of the grips is radially movable relative to the opening. The tool includes a plurality of lugs coupled to the body. The lugs limit radially inward movement of the at least one of the grips. The tool includes a cam coupled to the body. Rotation of the cam about the central axis in a first rotational direction relative to the body moves the at least one of the grips radially inward. Pins and lugs serve to prevent escapement of the grips, which constitute a foreign object debris that may cause mechanical or electrical damage.

Abstract: An automated assembly machine for fabricating large mechanical structures including a floor assembly jig for receiving and holding parts in a desired orientation, a pair of carriages, a first drive mechanism for independently driving the carriages longitudinally, a second drive mechanism for moving the carriages vertically, a tool tray mounted on the carriages, and a plurality of tools, including a drill, a hole diameter measurement probe, a nut runner, and an electromagnetic riveter, mounted on the tool tray for lateral movement toward and away from a workpiece clamp-up position. The tools are positioned at the workpiece clamp-up position by moving one of the carriages longitudinally along the floor assembly jig and raising the other carriage to elevate the tool tray to a desired elevation.