Active piezoelectric tool, active piezoelectric device and operating method of the active piezoelectric tool

A tool for carrying out a machining operation to a workpiece, the tool comprising:

• a toolbar comprising a longitudinal axis and a machining tool disposed on one end:
• a first support;
• a second support;
• a piezoelectric device disposed between the first support and the second support;
• a control logic unit operatively connected to the piezoelectric device, and
• a frame having an upper portion and a lower portion,
• wherein the lower portion is threaded and rigidly connected to the machining tool,
• wherein the first support is coupled to the upper portion of the frame and the second support is engaged with the thread of the lower portion of the of the frame, and
• wherein the second support is arranged facing the first support;
• wherein the control logic unit is configured to generate a driving signal to drive the piezoelectric device, and
• wherein the driving signal is proportional to a velocity of the tool bar and causes the piezoelectric device to move an amount that compensates for torque and vibration on the toolbar.