A die commonly used in press-brake forming, usually machined with a triangular cross-sectional opening to provide two edges as fulcrums for accomplishing three-point bending.
Source: The OHIO State University
V
Velocity of Final Hem Steel
Speed at which the final hem steel travels during final hem.
Source: The OHIO State University
Vent
A small hole in a punch or die for admitting air to avoid suction holding or to relieve pockets of trapped air which would prevent proper die closure or action, and also reduces press tonnage required.
Source: The OHIO State University
Vent mark
A small protrusion resulting from the entrance of metal into die vent holes.
Source: The OHIO State University