Patent ID: 7527460

Claim:
A horizontal milling-boring machine comprising: a monolithic horizontal bed anchored to the floor and separated from a work table, a portal formed column structure supported by the bed and slidable therealong along a longitudinal axis of the bed, said portal having two columns connected together by an upper crosspiece, a slide carriage slidable vertically along facing internal walls of said columns, a slide supporting a tool head and movable relative to said carriage along a longitudinal axis of the slide in a direction perpendicular to the longitudinal axis of said bed, guide means and drive means being interposed between said column structure and said bed, the guide means including rails positioned on an upper surface of the bed, wherein the two columns of the portal are lowerly connected through at least a crosspiece placed at a level at least partly lower than the lowermost upper surface of said bed, which at least a crosspiece is located outside of the area between the rails.