Anchor Lamina GmbH
Jan Schiefer
An der Wiesenmühle 19
09224 Chemnitz, OT Grüna
Germany

Phone: +49 371 842450
Fax: +49 371 243506-50
http://anchorlamina.de

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Rotary bending units

ACCU-BendTM offers you an efficient alternative to conventional bending with a bending punch for use in follow-on composite and edging tools.

Product Features

The Accu-BendTM is manufactured with the same precise methods and processes you put into your own designs. The bending lobes of the Accu-BendTM are specifi cally treated to withstand the wear associated with a repetitive bending motion. The saddle is a low-friction alloy chosen for the ability to hold up to a bearing load with little to no wear.


  • easy adjustment in case of unsteady material properties
  • holding-down clamp function integrated into roller bending units
  • no holding-down plate required
  • reduced number of bending steps
    • since the formation of large bending angles is possible in one operation
  • low-maintenance thanks to tribological pairing
    • of hardened steel (bending shaft) on bronze using solid lubricant inserts (bearing bushing or retainer)

Rotationsbieger Sonderlösungen

Custom-made products for your applications

Having a wide range of standard sizes is never enough.

Please do not hesitate to contact us - we will be pleased to support you if you have an application that calls for something special.

Our team of engineering specialists are waiting to tackle your job head-on.

They will work with you to quickly find solutions that fit your specific application.  Once designed, making your custom order(s) will be quick and efficient, using our production resources which utilize the latest in tooling.


Comparison Process Standard Bending and Rotary Bending

1. Rotary Bending

Rotationsbieger Ablauf Rollbiegen 4

d) spring back

2. Standard Bending

Rotationsbieger Ablauf Standardbiegen 4

d) spring back


spring back effect

Rotationsbieger Rückfederung 1

part during bending process

Rotationsbieger Rückfederung 2

part after spring back

  • spring back depends on Material, Bending radius, bending angle as well as forming speed
  • required overbend can only be determined by bending tests or based on experienced data – Please contact Anchor Lamina
  • Please note: “The higher the materials yield strength, the higher the spring back.” and “The higher the bending radius, the higher the spring back.”
  • The radius at the anvil must be smaller then the radius of the finished part

Formula to calculate radius at anvil:

  • r = (rc * Wc) / Ws
    • r(c) = radius anvil
    • W(c) = bending angle finished part
    • W(s) = Bending angle in process

Source: https://en.anchor-lamina.de/Rotary_bending_units

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