Welder with automatic extrapolation control, for automatic “in situ” welding along the contour of the curve

摘要

The invention relates to a machine for automatically welding the parts (P1) that need to be assembled. The welding machine comprises a sensing head 61 in which the detection means 6 can measure the distance in the selected direction ML between the automatic welding machine 1 and one of the parts P1, the range being given a selection distance. And a contour P to be welded with an outwardly curved portion TC, the control device 7 having a memory in which the coordinates of the passing points of the torch 40 are stored, the coordinates being on the curved portion TC. It is characterized in that distributed to. The control device also includes first calculating means for determining the position of the passing points and for forming a series of points which connect the passing points by circular extrapolation and form a curve corresponding to the curved portion TC. 5) The successive positions of the torch 40 are matched to the curved portion. The invention is suitable for in situ welding, for example, for producing membranes for fluid storage tanks and their equivalents.