APPLICATIONS AND ADVANTAGES
In a synchronized press brake, the descent of the forming punch towards the bed is controlled by the cylinders C1-C2, which are moved by the proportional valves V1-V2. These valves control very precisely the flow of oil to the cylinders. The linear sensors S1-S2 (optical scales) send position feedback signals to the CNC controlling the system to ensure parallelism between the forming punch and bed (of the purposely tilted position).
The model PBS-HP sensors have the added advantage of being self-aligned, thus avoiding the use of complicated and expensive mounting systems (frames with guides and columns). This also improves the mechanical accuracy of the coupling between the optical grating and the slider. A single or double swivel ball joint "links" the movements of the slider to the fixed structure of the machine, so that all the movements of the forming punch can be made without incurring damages.