Gasparini patented an innovative angle reading system named GPS4. A sensor embedded into the die mechanically measures the profile angle within the die cavity, so as to always reach the exact value.
The first advantage is the possibility to bend complex shapes, with Z-bends, or with narrow flanges. In those cases, optical sensing is either ineffective or leads to problems due to error accumulation.
Another strength point is that surface finish has no influence, while it can make some laser systems ineffective.
Also setup times are reduced, because the operator does not need to know thickness, length, material or bending force.
