The LAMI-NOVA press brakes are designed to bend quickly and accurately. The mechanisms they incorporate are unique and make them quite different from the rest.
Among them:

Flexion compensation system:

Most of the press brakes in the market mount two hydraulic cylinders on each end of the machine, as seen in the figure. When pressure is applied to the beam and to the table, the boards give way in its central area and the result when bending a sheet is irregular and opened in the centre with respect to the ends, a very known phenomenon among the professionals with this type of machines. This problem gets worse in jobs with small V as the one seen in the figure, in which a 0.1 mm variation in the penetration of the punch causes bending differences from 2* to 3*.

The LAMI-NOVA press brakes solve this problem:

Machines bigger than 1000 KN (100 TN):

As seen in the figure, our presses are built with four hydraulic cylinders. The two of them located in the ends are equipped with internal mechanical tops adjustable in height and its aim is to limit the punch penetration in the die in order to achieve any bending angle. The two located in the middle are free and press the punch board without any limitation.

During the bending, the table flexes and takes the cambered form seen in the figure. The beam goes down until the internal tops of the cylinders which are located in the ends ,stop its movement. In this moment, the cylinders located in the middle keep on pressing the central area deforming the board in the same direction as the table. The operator can open or close the bending as he wishes simply by applying more or less pressure to the machine. This system allows bending tolerances of ½:.

Machines up to 1000 KN (100 TN):

As seen in the figure, in these presses two mechanical tops are mounted at the ends of the machine. These tops are adjustable in height in order to adjust the bending angle, while the cylinders are located in the middle.

When the board stops at the mechanical tops, the central cylinders keep on pressing, and therefore by adjusting the working pressure the punch can flex at the central area thus compensating the flexion of the lower board.

Guiding system:

The machine beam is located between the front plate and the frame like a sandwich. It can be guided not only at the ends but also in the central area, thus allowing its full straightness.

Anti torsion bar:

A stout bar moves along with the board avoiding its torsion. It is mounted upon free play swivel joints. It is possible to work at the ends of the machine up to a pressure of the 25% of the nominal without damaging it. In case of wanting to work at the ends without limitation, a hydraulic equalization device can be mounted as an option.

Hydraulic system:

The hydraulic block is designed to achieve approach speeds up to 100 mm/sec. The dual dropping valves are self controlled according to the European regulations.

Motorized top:

The rear stop positioning screws are perfectly guided inside tubular profiles obtaining positioning tolerances of up to 0,2 mm (0.1 mm for ball race screws). The top fingers are mounted on a rail with T slots for quick adjustment.

Numerical control:

Our numerical controls are able to bend any piece in no time.

We introduce in the control the lengths of the faces to bend and its angles, type of material and thickness.
The calculation procedure starts and the machine informs us about the development of the sheet to be cut, adjusts the working pressure and proposes the best way to perform the bending. On some models we can make a graphic simulation of the bending.

Switching to automatic mode, we bend the part. The control positions the tops as we bend the part. The result is a very accurate bending in a very short time (even better in the case of just one piece).
The tools are continuously protected against excessive strength or squashing.