Device for and process of laser welding with a calibration unit with refraction means

摘要

It is provided a device comprising a calibration unit adapted to guide an emitted laser beam along a first optical axis and comprising refraction means adapted to be passed through by the laser beam and to deviate it along a second optical axis different from the first optical axis; a guide structure engaging the refraction means and suitable to enable them to carry out a first movement in which the mutual arrangement of the optical axes is maintained constant; and actuating members adapted to impose the first movement of the refraction means.