System for measuring rotational imbalances for a balancing machine of a rotating workpiece

A system for measuring rotational imbalances for a balancing machine of a rotating workpiece, said workpiece defining a rotation and a force determined by imbalances in at least one plane during said rotation, said system comprising:

• a fixed support;
• a movable support connected to said fixed support;
• the movable support being configured to allow housing at least part of said workpiece and configured to allow micro-movements relative to said fixed support along said plane proportional to said force,
• a sensor operatively connected to said fixed support and said movable support and configured sense said force;
• and
• a blocking system being configured to constrain said movable support and said fixed support to allow said relative micro-movement between said movable support and said fixed support exclusively along a predetermined trajectory lying on said plane, the blocking system including an opposing system generating a moment opposite to the moment generated by said workpiece when positioned on said movable support, the blocking system comprising
• at least one screw developed along said predetermined trajectory, integral with said fixed support, the at least one screw comprising
• a stem attached to said fixed support, and
• a head, and
• a guide defined on said movable support, the guide housing said head and defining a perforated bottom configured to allow passage of said stem along said predetermined trajectory and to obstruct movement of said head beyond said perforated bottom, the opposition system being disposed between said head and said perforated bottom.