Stator-rotor type coaxial servo drive device

The invention discloses a stator-rotor type coaxial servo drive device and provides a coaxial servo drive device of a stator-rotor structure. The coaxial servo drive device comprises a machine frame and servo drive rollers arranged in the machine frame, wherein totally two rollers are arranged up and down in parallel; drive motors are arranged at shaft ends of the rollers; the drive motors comprise stators, and rotors arranged in the stators; the rotors are concentrically and fixedly connected with one ends of the rollers; the two drive structures have consistent structures and are symmetrically arranged; the stators of the two drive motors are of an 8-shaped integrated structure; and coders are arranged on the rollers. The coaxial servo drive device disclosed by the invention is ingeniousin structure and novel in concept, the working efficiency, stability and accuracy of high-speed servo drive are greatly improved, and meanwhile, the coaxial servo drive device is compact in structure, small in occupied space