Cambering

Cambering is an plastic deformation which induces an obtuse angle in the middle of a beam to counteract a deflection due to a load. Voortman developed two cambering machines for beam straightening and cambering.

Cambering process

When a beam is cambered the first stage will be an elastic deformation. This elastic deformation is reversible. When the force is no longer applied, the beam will return to its original shape. The elastic range ends when the material reaches it yield strength and that´s when the plastic deformation starts. Plastic deformation is irreversible but because the first deformation was elastic it will always part way return to its original shape. With the Voortman cambering machines it will automatically measure the actual deformation after relieving the load. When the actual deformation is lower than the desired deformation it will automatically initiate another cycle. It will repeat this process until the desired deformation is obtained.

Required press power and supporting distance

Formule: P = Wy x σ x 4 / A