(1) The main motion of the rocker drilling machine is the rotation motion of the spindle; (2) The feed movement is the longitudinal feed of the spindle; (3) The auxiliary movements include the vertical movement of the rocker arm along the outer column, the movement of the spindle box along the length direction of the rocker arm, and the rotary movement of the rocker arm and the outer column around the inner column together.Electrical Drag Characteristics and Control Requirements of Rocker Arm Drilling Machine