| 摘要 |
PURPOSE:To prevent the damaging of a robot torch of a teaching playback system and the work owing to the contact of said torch and the work by providing a detecting circuit which detects the contact of both between the robot torch and the work. CONSTITUTION:In a fusion cutting device by a robot torch 1 of a playback system, an electric circuit connecting the torch 1 and the work 2 and consisting of a relay coil 3 and an electric power source 4 is formed. A detecting circuit 6 having contacts 5 operated by the energizing of the coil 3 of thid circuit is provided. For example, when the torch 1 contacts with the work 2, the coil 3 is energized, by which the contacts 5 are closed to operate the circuit 6 which commands the controller for the torch 1 to execute averting motion. |
