Abstract: Apparatus for the control of two translational movement mechanisms of a bar, including a first translational movement mechanism (6) situated in a machine tool (4) for turning, and a second translational movement mechanism (18) situated in an installation (1) for sequential Loading of such bars (2) into the machine tool (4), characterized in that it comprises: a first element (23) consisting of an elongated ruler which includes at least a plurality of marks successively disposed along its longitudinal dimension for defining a given step and indicating distinctly two opposite directions (S1, S2) of reading this first element (23) along its longitudinal dimension, a second element (24) consisting of a detector of marks bome by the first element (23), this second element (24), on the one hand, detecting each step of a relative movement between the first element (23) and the second element (24).

Abstract: Apparatus for the control of two translational movement mechanisms of a bar, including a first translational movement mechanism (6) situated in a machine tool (4) for turning, and a second translational movement mechanism (18) situated in an installation (1) for sequential loading of such bars (2) into the machine tool (4), characterized in that it comprises: a first element (23) consisting of an elongated ruler which includes at least a plurality of marks (230) successively disposed along its longitudinal dimension for defining a given step and indicating distinctly two opposite directions (S1, S2) of reading this first element (23) along its longitudinal dimension, a second element (24) consisting of a detector of marks (230) borne by the first element (23), this second element (24), on the one hand, detecting each step of a relative movement between the first element (23) and the second element (24), as well as the direction of this movement and, on the other hand, developing a signal of step and of d