Patent ID: 8087149

Claim:
A method of joining a multiple member work-piece, comprising: stacking first and second members of the work-piece on a composite lower die having a stationary annular outer portion and a movable die portion within the annular outer portion; clamping the stacked first and second members between an upper die and the lower die, with the first member resting adjacent the lower die; wherein the upper die includes a clamp and a punch movable within an opening in the clamp; driving a rivet into the second member; wherein the rivet has a head portion and an annular body portion extending from the head portion and has an open end opposite the head portion; wherein the rivet is driven by the punch acting on the head portion; wherein the head portion and the annular body portion define an interior cavity that opens at the open end; wherein the annular body portion has an inner surface at the interior cavity and an outer surface opposite the interior cavity; wherein the body portion has passages extending through the body portion from the inner surface to the outer surface; and wherein the body portion has grooves running along the outer surface intersecting with the passages; wherein adhesive is stored within the interior cavity; wherein the driving is until the stored adhesive contacts the second member; heating the adhesive; and after said heating, resuming driving the rivet with the punch and simultaneously moving the lower die portion toward the rivet, thereby causing the heated adhesive to be dispersed through the passages to the grooves to bond the rivet to the first and second members at the outer surface.