Piezoelectric stepping type double-way linear driver

The utility model relates to a piezoelectric stepping type double-way linear driver and belongs to a driving machine. A screw centering shell is fixedly arranged outside a shell assembly; rotors and stators are arranged in the shell assembly; the stators and the shell assembly are fixedly arranged into a whole through bolts; the stators are connected with the rotors through rotor flexible hinges; driving piezoelectric devices are arranged in driving grooves of the stators; two clamping blocks are arranged in rotor central holes; the two clamping blocks are connected with the rotors respectively through clamping flexible hinges; clamping piezoelectric devices are arranged in clamping grooves of the rotors; clamping nuts are arranged between the opposite parts of the two clamping blocks; screws are arranged in threaded holes of the clamping nuts; the screws can move axially and are inserted into the screw centering shell in a circumferential and radial positioning manner; and a controller controls the driving piezoelectric devices and the clamping piezoelectric devices respectively. The piezoelectric stepping type double-way linear driver is reasonable in structural design, precise in output, reliable in operation, convenient to control, wide in application range and high in adaptability.