Bending Glossary
The A's to XYZ's of Bending Pipe and Tube
A-LA End: End of bent tube that represents the first tangent.
B End: End of bent tube that represents the last tangent. CLR: Center line radius (most common call out for bend radii’s of round tube). CNC V.S. NC: CNC, Computer Numeric Control of the tube in all axis of movement. (X, Y, Z,). NC, Numeric control of only the degree of bend. "D" of Bend: CLR / OD = "D" of bend DBB: Distance Between Bends is the straight section of the tube from tangent to tangent. DOB: Degree of Bend is the measurement of the bend angle. E-B Factor: (OD /Wall) / (CLR/OD) = E-B Factor (Empty Bend Factor for evaluating bending without a mandrel) E-Plane: Bending direction of a cross section done the Easy way. Ferrous: Mild Steel, Alloy Steel, Stainless Steel. Gauge: Tube / Pipe wall thickness by established gauge size. Grip Finish: The typically rough finish applied to tube grooves that grip a tube. H-Plane: Bending direction of a cross section done the Hard way. ISR: Inside radius. (most common call out for bend radii’s of square and rectangular tube). LRA Bend Data: Lengths, Rotations, and Angles, to define a tubular shape. |
M-ZMulti-Radius: Type of tube groove in the bend die or pressure die that prohibits use of a mandrel.
Multi-Stack: Refers to a machines ability to have more than one bend die stacked on it. Non-Ferrous: Aluminum, Brass, Copper, Titanium, Inconel. OD: Outside diameter of work piece. OSR: Outside radius. Pipe Size V.S. Tube Size: Two different methods for defining the OD of a tube: Example for 1.0" Pipe = 1.315 OD Example for 1.0" Tube = 1.000 OD Rotation: Swing arm direction of tube bender viewed from above. (CW or CCW) Tangent: The beginning and ending of an arc or bend. True Oval V.S. Flat Oval: True Oval, does not have a flat surface, and are also elliptical in shape. Flat Oval, has two parallel flat surfaces connected by an arc. Wall Factor: OD / Wall = Wall Factor Wall: Tube / Pipe wall thickness. XYZ Bend Data: Three dimensional intersecting point coordinates, to determine a tubular shape. |
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