Single crystal silicon rod single-piece cutting system

The invention discloses a single crystal silicon rod single-piece cutting system. The single crystal silicon rod single-piece cutting system comprises a machine base. A silicon rod fixing mechanism comprises two mounting bases which are arranged on the machine base oppositely. The upper ends of the two mounting bases horizontally extend oppositely to form clamping parts which are integrally in a horizontal cylinder shape. A cutting machine head is vertically arranged outside the clamping parts in a sleeving mode. The single crystal silicon rod single-piece cutting system is characterized in that one mounting base serves as a fixed mounting base, and the other mounting base is slidably arranged to form a movable mounting base; the end, far from the movable mounting base, of the machine base is further provided with a clamping motor; an output shaft of the clamping motor is connected with a clamping lead screw; and the clamping lead screw is matched with a clamping nut fixed to the movable mounting base to form