FIELD: process engineering.
SUBSTANCE: invention can be used for centering workpieces to be welded together at stationary rail welding machines. Position of clamped rail ends to be welded together is corrected with the help of rail horizontal servo drives in response to mismatch signal. Said signal is generated with due allowance for measured distances from common base to mating surfaces of rail head side faces in the zone of butt joint. Said distance is measured simultaneously at the LH and RH faces of rail heads to be welded together. Said signal is generated as the difference of signal from RH and LH side of the rails.
EFFECT: accurate alignment of rails axes.
1 dwg
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