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Automated folding centre for long parts

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article image Automates the entire bend sequence and eliminates operator involvement.

RAS XXL-Center is ideal for producing long parts with speed, precision and repeatability.

Bending long parts has never been easier with the RAS XXL-Center. One operator easily loads the work piece onto a sheet support system in front of the machine and then unloads the complete folded, finished part.

The machine automatically inserts, squares, positions to the bend line and bends the flanges up or down. There is no more rotation and no more complicated handling. No second or third operator is needed.

It is possible to bend pre-coated sheets without scratching the material surface with the RAS XXL-Center’s unique rotation of the machine's tools.

Programming is simple with RAS XXL-Center - even less experienced operators can produce perfect parts in no time.

The XXL-Center automates the entire bend sequence and eliminates operator involvement.

Loading supports

The loading tables are an integral part of the XXL-Center's sophisticated ergonomics. They slide out from the work surface and move forward from the machine. The operator then easily loads material onto these tables.

Feeding grippers

The XXL-Center’s feeding grippers hold the part during the entire bend cycle and position it automatically for each bend. For most parts the operator unloads only the finished work piece.

Only on parts with hems on both sides does the operator flip the work piece once during the bend cycle. Even then, rotating the part is not required.

Upper and lower folding beam

The folding beams were designed to rotate during bending by only a few millimeters and to roll away with the work piece in a 3D motion. This motion insures that material surfaces will not be scratched.

Depending on whether a part needs to be bent up or down, the active folding beam moves forward to the material, while the counter folding beam retracts in the upper or lower clamping beam.

The free space created by this functionality provides part design capabilities never before seen on a metal folder.

The CAD designed and finite-element optimised folding beams offer a strength of more than 1000N/mm2 and are dimensioned to resist highest loads.

The folding beams are supported every 270mm, two to three times more than on common designs. This design assures perfectly straight bends every time.

The drive system concept

This XXL-Center uses no hydraulics. Instead, regulated and brushless ac-motors bring power and speed to the entire system. Forget about oil leaks, one side clamping, hems that are not consistent along their length or even over stressed machine components.

All motors are placed at the centre of the machine. This assures optimum flow of forces to the very end of the machine bed.

The drive concept is responsible for the exact parallel motion of all beams, guaranteeing extremely straight bends and programmable hemming dimensions, where the hems are closed to the same height along the complete length of the part.

The Multibend 9002 CNC

The CNC is the brain of the XXL-Center and drives all actions with unheard of speed and accuracy.

Programming with the RAS CADalyzer software is simple - just enter angles and flange dimensions for each bend. Step by step the CNC shows the part creation on the screen.

The CADalyzer software offers maximum ease of use including:

* Graphical input of the angles for up or down bends and the flange dimension. The system calculates the developed length or start with the part width. In addition, data from other CAD systems can be imported as an ASCII or Excel file.

* Visual simulation of the bending sequence for visual collision checks.

The RAS XXL-Center is available from Sheetmetal Machinery .

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