Method for processing large cast iron dies, particularly for vehicle sheet-metal pressing, and the apparatus for its implementation

Claim 1

A numerically controlled robot for moving a laser beam focusing head relative to a surface, however disposed, in such a manner as to cause the laser beam to always strike said surface orthogonally, characterised by comprising a portal structure (5), an arm (6) carried by said structure (5) and projecting perpendicularly therefrom, and mobile along a first controlled direction (a) on respective guides (7) carried by an upper crossmember (8) of said structure (5), a carriage (10) carried to the side of and projecting from said arm (6) and mobile thereon along a second controlled direction (b) perpendicular to said first direction (a), and a shaft (12) carried by said carriage (10) and mobile through this latter along its own axis so as to translate along a third controlled direction (c) perpendicular to both said first and second direction, said robot further comprising a turret (14) which carries said head (2) in an angularly rigid manner and is mounted rotatable about an axis parallel to said cross-member (8), and a connection piece (15) which carries said turret (14) in an eccentric cantilever manner and is itself carried in an eccentric cantilever and angularly rigid manner by said shaft (12).