Automatic tracing method of welding position

Abstract

Abstract PURPOSE: To achieve the improvement in the captioned tracing accuracy and welding quality by detecting the level of the targets on the monitor screen, controlling TV camera positions so that the projected scribe line positions within the range of inter-target spacing and letting the welding head move cooperatively with the camera. CONSTITUTION: The scribe line 21 projected on a monitor 13 by a TV camera 7 via camera control unit 12 positions horizontally at the approximate center on the screen. The data control unit 14 for detecting the screen position of the projected scribe line 21 consists of a reference line generator 15 for projecting X-line 22 and Y-line 23, a target generator 16 which projects targets A thru D of the detection range at the 1st thru 4th quadrants on the screen, a mixer 17 which mixes the reference line signal and target signals in the video signal of the camera 7, and a discriminator 18 which detects the line 21 position from the mixed video signals. When the mixed video signals are inputted to the monitor 13, the motor which integrally moves the camera 7 and welding head is controlled of forward and backward runs by the output of the discriminator 18 via driving circuit 19. COPYRIGHT: (C)1980,JPO&Japio

Inventors

• 👤 Takashi Mori
• 👤 Mikio Sato
• 👤 Minoru Kumagai

Bibliographic Details