Mechanical arm demonstrator

The utility model discloses a mechanical arm demonstrator which comprises a control box, a rocker assembly and a control arm, and the rocker assembly and the control arm are arranged on one side of the control box. The control arm is provided with a plurality of middle joints which are connected in sequence, arms of the middle joints comprise front arms and rear arms, and the rear arms are hinged to the front arms; the potentiometer is installed on one arm, and a shaft of the potentiometer is installed on the other arm. The rocker assembly is used for controlling the movement of the trolley, the control arm is used for controlling the movement of the mechanical arm, and the resistance of the potentiometer is changed through the movement of the middle joint to generate an electric signal; and the electric signal is synchronized to the mechanical arm, so that the corresponding joints of the mechanical arm do the same movement, and the effect of controlling the mechanical arm is achieved. 本实用新型公开了一种机械臂示教器，包括控制盒、