Method and apparatus for aligning two work pieces

Details Method and apparatus for aligning two work pieces Method and apparatus for aligning two work pieces

B - Operations, Transporting

23

K

327/75, 327/86

B23K 11/04 (2006.01) B23K 11/00 (2006.01)

Patent

CA 1222548

- 1 - ABSTRACT OF THE DISCLOSURE Lengths of rail which are to be butt-welded together end to end are clamped in respective heads of a butt-welding machine. Alignment of the rail lengths is checked by an alignment device. Any adjustment necessary to achieve the required degree of alignment is made before welding. The alignment device comprises suspended structure which forms a downwardly-opening bight. The structure carries locating stops, clamping cylinders and electromechanical transducers with sensing plungers, all of which project into the bight. To check alignment, the device is lowered until the ends of the rail lengths are received within the bight. One of the rail lengths is clamped against the stops by the opposed clamping cylinders. The location of the other rail length relative to the structure is sensed by the transducer and the machine clamps are adjusted until those transducers indicate alignment of the rails.

449631

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