METHOD FOR BUILDING GREEN TYRES

A working station for deposition of elementary semifinished products for building green tyres includes at least one feeding apparatus for feeding an elementary semifinished product, a forming drum, an anthropomorphic robotized arm associated with the forming drum, a control apparatus for sending movement commands to the anthropomorphic robotized arm in order to move the forming drum in a working zone, and a calibration device for calibrating the anthropomorphic robotized arm. The calibration device includes a base plate, a support rotatably mounted on the base plate, and a reference element translatably mounted on the support. The support is positionable in a plurality of first positions relative to the base plate and the reference element is positionable in a plurality of second positions relative to the support and is fixed into one position of the plurality of second positions by inserting at least one pin or screw into one slot of a plurality of slots on the cursor. The control apparatus is also configured for determining target coordinates, retrieving from a memory area a correction function, modifying the target coordinates by means of the correction function, and using processed coordinates for sending the movement commands.