PURPOSE: A calibration method of a vertical articulated robot using a digital leveler is provided to reduce work time by automatically finding and registering the origin point of each axis of robot joints. CONSTITUTION: A calibration method of a vertical articulated robot using a digital leveler is as follows. Each joint of a robot(110) is moved in a pre-determined pose. The angles of the joints at each pose are measured using a digital leveler(130). The origin point of each joint of the robot is detected using the measured angles. The detected positions are registered as the origin point of each joint of the robot.
