Welding installation for nuclear fuel assembly skeletons has welding tool movement system capable of five, six or seven degrees of freedom

摘要

The installation for welding structural elements to guide tubes of a nuclear fuel assembly skeleton, comprising a frame (14) to receive and hold the guide tubes and structural elements, a carriage (12) that moves parallel to the guide tubes, at least one welding tool (36), and a tool movement system (38), has the latter capable of providing five, six or seven degrees of freedom. The system comprises an arm (42) with two or more articulated sections (46, 48), and a hand which holds the tool and is articulated to the arm with at least two degrees of liberty.