Rotary installation tools for clinch fasteners

A tool tip for a rotary press punch, comprising:

• a body having a shank, an axial bore, and a flange on the shank adjacent a bottom end of the body, said bore constructed and configured to hold a fastener;
• a plurality of workpiece displacers, each workpiece displacer affixed to the body at a fixed position on the flange along a periphery of the body surrounding the bore and adapted for displacing workpiece material around the outside of the fastener;
• the workpiece displacers comprising:
• a first displacer having a ramped profile which is vertically tapered along an arcuate ridge centered about said axial bore from a back end of the displacer of greatest height down to a front end of minimum height of the displacer where the ridge meets a distal end face of the flange;
• a second displacer that follows the first displacer in peripheral alignment and is configured to move workpiece material parted by the first displacer closer to the fastener;
• and
• a third displacer having a rectangular profile.