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Roller Bending

  • componentA2_capabilities_specialFab_rollerBender_01_imageAgam operates two CNC controlled roller benders.

Specialized Bending That's Ahead of the Curve.

A roller bender works by introducing pressure and creating a 'pinch' as material is driven through the roll sets. This force is applied by changing the distance between the top roll and the two bottom rolls.

Tauring Roller Bender

One machine is operated vertically.

  • An operator plugs the extrusion type and curve radius into the computer. Hydraulic motor controls will move the rollers upwards as the extrusion is driven through.
  • The CNC control panel.
  • When bending a very tight radius, extrusions are filled with fine sand that is compacted into the extrusion on a vibrating table. This technique helps prevent deformation of the extrusion walls during the bending process.

PBT Roller Bender

Agam’s PBT Roller Bender runs horizontally.
  • The CNC control panel.
  • This machine includes a mandrel capability which uses a piece of nylon that’s positioned inside the extrusion and matches the interior dimensions.
  • After the curve has been processed, the arc meter measures the actual radius obtained, feeding back the data to the CNC controller. If the measured result differs from what’s required, the machine automatically adjusts the parameters of the program to get the correct radius.

Narrow vs. Wide

Both machines are capable of producing complex shapes and can roll extrusions on either the wide surface (the 'easy' way) or the narrow surface (the 'hard' way).

  • “Easy”

    Curved Bend Type

  • “Hard”

    Curved Bend Type

Technical Data

  • Various radii can be incorporated in one pass, going from straight to curve, and then back to straight, as illustrated in the “S” shape above.
  • Alternatively, arches can be made, such as the above illustration.

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