| 摘要 |
<p>Predetermined limits are attained for the peak loads encountered when a composite assembly of workpieces (12) is secured with a swaged collar fastener (10), by disposing cavities in the cylindrical wall (32) of the fastener collar to receive material flow during the swaging operation. Rotation between the collar and pin (16) of the fastener (10) is precluded by disposing abutting portions on the pin (16), which interface against the swaged material of the collar. Fastener cost reductions are achieved by decreasing the volume of a post-swage scrap portion on the pin (16) and by concurrently fabricating grooves thereon with a rolling die, for various functional purposes. Swaging toll malfunction is avoided by eliminating land surfaces adjacent to grooves (38) on the pin (16) through which pull is applied thereto with the tool (16).</p> |
