| 摘要 |
The invention provides a device for detecting the position of a seam on a welded pipe in a three-dimensional laser beam machine for processing pipes. The three-dimensional laser beam machine has a chuck 62 for holding, rotating and axially moving a cylindrical pipe 400 . A weld seam detection device 100 is equipped with a sensor head 110 provided on a laser processing main body 30 . The sensor head 110 has a master lever 120 that moves along an inner wall surface 410 of the cylindrical pipe 400 and a sensor lever 140 . When the cylindrical pipe 400 is rotated and the sensor lever 140 contacts the weld seam, the movement of the sensor lever 140 is detected by a micro switch 150 , which sends a signal to an NC device 90 by which the weld seam position is recognized.
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