Designation for outside of metal. See outside of metal outer panel.
Source: The OHIO State University
O
Offset
A tooling offset is required in all physical sheet metal tools. That is, there must be a physical gap between the male and female tooling, to accommodate the sheet metal thickness.
Source: The OHIO State University
Offset Yield Strength
The stress at which the strain exceeds by a specified amount (the offset) an extension of the initial proportional portion of the stress-strain curve; expressed in force per unit area.
Source: The OHIO State University
Oil Canning
The distortion of a flat or nearly flat surface by finger pressure and its reversion to normal. Same as canning
Source: The OHIO State University
Olsen Ductility Test
A cupping test in which a piece of sheet metal, restrained except at the center, is deformed by a standard steel ball until fracture occurs. The height of the cup at the time of fracture is a measure of the ductility.
Source: The OHIO State University
Open Back Inclinable Press
An inclinable press in which the opening at the back between the uprights is usually slightly more than the left-to-right dimension of the I slide flange.
Source: The OHIO State University
Open Hem
Also called as radius flat hem or loose hem. A flange that is folded back over upon itself with the edge of a mating part between the fold. This fastens the mating parts together.
Source: The OHIO State University
Orange Peel
Texture of steel that appears like an orange, either from the steel mill or after forming.
Source: The OHIO State University
Oscillating Die
A universal die which contains a cutoff type sub-die that pivots in a horizontal plane with each press stroke. This allows the blanking of rectangular, triangular, or trapezoid shaped blanks of various angles and sizes.
Source: The OHIO State University
Outer Ram Load
Maximum pressure, usually in tons on the binder surface
Source: The OHIO State University
Outside of Metal Flange Length
Distance of the outer panel from the trim edge to the outside of metal in the mating flange area.
Source: The OHIO State University
Outside of Outer Metal Panel
Side of panel that lays on the hem die.
Source: The OHIO State University
Overbending
Bending metal a greater amount than called for in the finished piece to allow for springback.
Source: The OHIO State University
Overcrown
(1) The term used to signify that the curvature of a surface is too high. (2) Used for the overbending of a curved surface to compensate for spring back.
Source: The OHIO State University
Overhanging Press
A gap press in which the frame overhangs the bed. See also C-frame press. Also called overhanger.
Source: The OHIO State University