The machines used for these works have a particular morphology. They are generally equipped with stocks or a torsion bar system making it possible to position the profile section to be machined under a broaching tool and to drive it with the movements necessary to the milling operations that make it possible to produce the part.
These movements are combinations of longitudinal displacements and rotations about the long axis of the part.
To machine all the faces of a profile section in order to obtain a finished part, it is necessary to work in at least 2 phases having different lays. The first phase is for machining a part of the surfaces by taking reference on two rough faces. The second is for machining the remaining rough faces, after reversing the part and calibrating on the previously machined faces.
This part reversal and recalibration operation is performed manually by the operator of the machine. The invention makes it possible to perform this operation automatically. It thus eliminates the fatigue associated with this operation for the operator and the risk of poor positioning of the part after reversal. It thus allows for a significant productivity gain.