| 摘要 |
The invention relates to a device intended for the automatic manufacture of tubular lattice girders. It consists of a press (3) and of a set of pincers which are driven in longitudinal and transverse movements. A tube (1) intended to form the lattice of the girder is flattened by the press (3) at intervals, and then shaped by the movement of the pincers. A welding set mounted on a carriage and guided by the beams (members) joins up the lattice to the beams. The invention finds its application in the manufacture of parallel or non-parallel girders in the building sector and architectural constructions. <IMAGE>
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