A balancing device for a bar loading magazine for guiding material bars on a turning machine, includes at least one mass body that can be repeatedly positioned in relation to a guiding unit that allows a rotation of an introduced material bar about a rotary axis. The mass body is, after each completed positioning, in a connection with the guiding unit and/or the material bar, so that the mass body rotates, during the rotation of an introduced material bar, together with the material bar at the same angular speed about the rotary axis. At least one positioning unit is designed to bring the mass body into a starting position in relation to the guiding unit, to detect during rotation any required repositioning because of an imbalance, and to reposition in each case the mass body in response to the detection of any required repositioning in relation to the guiding unit.

The present invention relates to a socket alignment device for a bar loading magazine for guiding a bar of material to an automatic lathe, wherein a z-axis (z) is defined by the longitudinal axis of a bar of material (2) guided in the bar loading magazine, and wherein a first socket (1), into which the bar of material (2) is to be introduced for processing thereof in the automatic lathe along the z-axis, is arranged in the bar loading magazine, wherein the first socket (1) is mounted so as to be rotatable either coaxially about the z-axis (z) or about a rotational axis () parallel to the z-axis (z) and wherein at least one drive means (6) is included, which can be coupled at least to the first socket (1), specifically to the rotary drive of the first socket (1) about the z-axis (z) in such a manner that the first socket (1) and the cross-sectional profile of the bar of material (2) can be aligned flush with one another for introduction of the bar of material (2).

An apparatus for feeding bars to a machine tool including an end adjacent a working zone in which a spindle is provided; a drum element, rotatable around an axis; a movable support provided on the drum element for supporting and guiding a bar parallel to the axis. The movable support slidably drivable on the drum element parallel to the axis between a disengagement retracted configuration and an engagement extended configuration. The movable support having telescopic tube configured for being received inside tubular housing and guide for coupling with the spindle. The telescopic tube defines, a cylindrical containing structure configured for enclosing and supporting in a distributed manner a respective bar along the entire supporting zone, so as to prevent the bar from flexing because of the centrifugal actions generated by rotation.