System for controlling the proper functioning of industrial screwdrivers

System for verifying the proper functioning of industrial screwdrivers placed on a test bench,

• said bench comprising
• a plurality of hydraulic brakes (F), with which the screwdriver is associated, suitably controlled by a hydraulic circuit comprising at least one pump (P), which withdraws the fluid from a reservoir (T) and provides it to a pressure regulating valve (VP), which in turn provides it to the brakes,
• each brake being provided with measuring transducers (TR), connected to an electronic driver board (SP), which also controls such regulating valve (VP),
• a computer (U) that communicates with such board and that comprises a suitable driving program stored thereon,
• such driving program, once an operator has selected the brake to be used for testing the screwdriver, being able to progressively increase the braking capacity of the brakes by adjusting the pressure, until reaching a complete stop of the electronic screwdriver,
• characterized in that a hydraulic distributor (D) is present between such brakes (F) and the regulating valve (VP), such hydraulic distributor comprising solenoid valves able to select, operate and control the hydraulic pressure of each brake to which it is selectively connected.