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Straightening

 

In general, all metals that have an elongation after fracture of 5% and a pronounced yield strength can be straightened.  The required straightening force is determined based on the modulus of elasticity, the upper yield strength and the straightening support clearance. During straightening ( bending straightening), the workpiece to be straightened his first measured or inspected. The workpiece with the highest elevation (for vertical straightening) is positioned under the straightening die and placed on straightening supports. During straightening, the workpiece is deflected against the existing distortion far enough to obtain sufficient plastic deformation of the material until straightness is achieved.

 

Straightening of round material (centre support)

The round material is clamped between two left and right pivots with centre supports. During straightening, the straightening force is transferred into the straightening bed via 2 magnetic straightening supports (on the left and right of the picture) The straightening cart is fixed relative to the straightening bed.

 

 

Straightening of round material (centre support)

The round material is clamped between two left and right pivots with centre supports. During straightening, the straightening force is transferred into the straightening bed via 2 traveling magnetic straightening supports (on the left and right of the picture) The straightening cart can travel left and right. No relative movement occurs between the measurement sensor and the workpiece while the straightening card travels.

 

 

Straightening of round material (roller support)

The round material is clamped between two left and right pivots with roller supports. During straightening, the straightening force is transferred into the straightening bed via 2 straightening supports (on the left and right of the picture) The straightening cart can travel left and right until the straightening supports.

 

 

Straightening a flat material on roller trestles

The round material is placed on to roller trestles. The flat material can be relocated on the spring-loaded pivots. Longer parts can be supported with additional roller trestles. Alternatively, workpieces with smaller dimensions can be supported with roller trestles outside of the straightening machine table.

 

 

Straightening of plate material

Gantry straightening presses are used to straighten plate material. In this case, the workpiece does not move under the straightening die, but the straightening gantry is positioned above the material to be straightened. The plate material to be straightened can be lifted hydraulically to position the straightening supports. The straightness inspection is performed with a straight edge (light gap). The gantry can travel outside of the straightening table for loading and unloading purposes. 

 

Torsion straightening

Twisted flat materials can be straightened with a straightening facility. The flat material is placed into a pivoting straightening fork and a fixed counter support. The material is straightened by pivoting the straightening fork against the material distortion. The distortion can be determined with a measurement scale or with sensor scales relative to the ground straightening 

 

 

Horizontal straightening

Horizontal straightening is used to straighten large and heavy profile material. The important advantage is that the material to be straightened can be fed into the straightening machine with roller strips or with a crane from above. The straightness can be inspected with a special measurement facility or visually.