| 摘要 |
In welding machines a relative movement between the workpiece (2) and a machine part (7) serving as a support for a welding head (13) along a predetermined path corresponding to an estimated course of the joint (16) to be welded is somehow caused to take place but for various reasons there is most frequently a discrepancy between this estimated course and the actual one. In order to compensate deviations between the two courses a welding head adjusting device is used which comprises a holder (9) adapted to be secured to the machine part (7), a carrier (10) for the welding head (13) which carrier is adjustably connected to the holder, and a sensor member (15) which is intermittently extensible from the carrier towards the workpiece (2) to thereby establish the actual position of the joint (16) and to correspondingly adjust the position of the welding head (13) relative to the machine part (7). |
