Mehrteilige Stanzniet-Form mit verlängerter Standzeit

• Main Author: KERNOSKY, STEPHEN
• Format: Patent
• Language: German
• Published: 17.04.2008
• Subjects: FORGE FURNACES; FORGING; HAMMERING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PRESSING METAL; PUNCHING METAL; RIVETING; TRANSPORTING

Die (16) for shaping a self pierce rivet when the self pierce rivet is driven into workpieces (30), comprises an anvil (40) having a perimeter surface and collar (42) having an inner surface that contacts the perimeter surface of the anvil where collar is affixed to the anvil, so that the anvil and collar cooperate to reduce stress induced breaking of the die. An independent claim is also included for a drive system (10) for driving a self pierce rivet into workpieces, comprising a fixture having an aperture (20), a first die (24), a second die (26), and an actuator (18) proximate the fixture, the actuator being configured to move the second die in an axial direction between a retracted position and an advanced position, to axially drive the self pierce rivet, where first die is a die for shaping a self pierce rivet when the self pierce rivet is driven into workpieces.