Three freedom mechanism system for fan blade dynamic balancing machine

The utility model discloses a three freedom mechanism system for fan blade dynamic balancing machine which belongs to the mechanical system of the fan blade dynamic balancing. The system is composed of a front support, a rear support, a base, an electric motor, and a tail rod integrated with the electric motor together. The front support is composed of a front frame, one electric motor, and a rotary shaft. A rear supporting rod is fixed on the rear support by a rear frame. Four (or three) springs are arranged in the rear support, which can not only balance the vibration caused by the mass unbalance of the balancing fan blade but also comprehensively balance the vibration caused by the asymmetry of the fan blade in the error range. The utility model also considers the particular structure of an electric fan, better simulates the working condition of the electric fan, and the balancing effect is ideal.