Method for attaching a clinch element to two panels

摘要

A clinch element (20) including a body portion (22) having an annular lip portion (40) projecting from an end face (38) of the body portion including an arcuate free end and a frustoconical outer surface. One embodiment includes an annular lip projecting from both end faces of the body portion. A method of attaching the clinch element to one or two panels which includes driving the free end of the lip portion against an outwardly inclined frustoconical chamfered face of a die cavity, deforming the annular lip over the panel and a die member having a projecting piloting point and an annular die cavity surrounding the piloting point.