Abstract: Tooling is held within the nose of a rotary punch and as the tool is rotated and forced against a workpiece a fastener within the tool becomes affixed to the workpiece. The tools have displacers which non-destructively deform and reshape the workpiece without any loss of workpiece material. The tools have various types of displacers including; tapered and arcuate displacers which act in concert to progressively act upon the workpiece; spherical displacers which may be fixed or rotatable such as caged ball bearings; and a full-circle displacer ring which wobbles as it presses against the workpiece. In the case of fixed spherical displacers, a multi-stroke method can be employed where the tool is rotated after each stroke in a group of installation strokes.

Abstract: A unified spring pin assembly provides remote actuation of a spring pin by pulling a cable. The assembly includes a retainer with an apertured cap at the top which is attached by clinch deformation. Clinch means also joins a retainer of the spring pin sub-assembly to a sheet. A spring operates between the inside surface of the cap and the pin. The pin includes a bore which extends through its entire length to provide a passage for the cable which includes a ball end that pushes against the end of the pin when the cable is pulled.