A device on a slide forming machine driven by a cam that is mounted on the rear shaft allowing the removal of a slug from the strip, thus providing the ability to produce a blank with special end shapes.
Repositioning
Operation in turret press fabrication denoting the release of the workholders, movement of the X axis to a new position on the workpiece, and the regripping of the workpiece so that a sheet larger than the X axis table travel can be fabricated.
Reproducibility
Extent to which parts from multiple lots are identical.
Rerolling
Final cold rolling operation, usually done to achieve specific thickness control and improved finish.
Resins
Natural or synthetic basic material for coatings and plastics.
Resistance Projection Weld RPW
See Projection Weld.
Resistance Spot Welding RSW
Melting and joining action of two adjoining metal surfaces created by the thermal reaction of the metal to the flow of an electrical current forming a weld nugget.
Revision
A subsequent part drawing usually denoting new corrected or improved version.
Revision Description
A written notice describing the nature of changes to a drawing.
Rivet Nut
Internally threaded fastener designed to be used as a rivet from one side of a workpiece or assembly and to provide threads for a screw or bolt to be used in assembly of a mating part.
Rockwell Hardness
An indentation hardness test based on the depth of penetration.
Roll Formed Shape, Hollow
A roll formed shape which is closed by mechanically fastening or welding the two strip edges together.
Roll Formed Shape, Open
A roll formed shape with a linear or curved contour in which the two ends of the shape are not brought together.
Roll Forming
A continuous bending operation in which sheet or strip metal is plastically deformed along a linear axis by being passed through a series of roller dies and progressively shaped to the desired contour.
Roll Stations
Tandem sets of rolls used in roll forming to shape the metal stock in a series of progressive stages to form the desired cross-sectional configuration.
Roll-Over
See Pull Down.
Rotary Slide Machine
A vertical forming machine with the ability to place several forming slides radially around the center tool and produce intricately formed stampings and wire forms.
Roundness
Extent to which a feature is circular.
Run
Sag or accumulation in a paint or finish film prior to curing.
Run Out Flange
Feature on a formed part which is designated by the designer to absorb the tolerance accumulations created by multiple forming operations.
