A section member drilling or milling machine comprises a machine bed (2) for supporting a workpiece (P) to be drilled, the machine bed including guides (3) for controllably sliding thereon a support (4)comprising precision vertical guides (8) thereon a platform is engaged, the platform comprising parallel horizontal guides (10) slidably supporting a carriage (11), in turn supporting a cantilever arm (5), including a driving motor for controllably driving a drilling and milling tool along parallel guides of the cantilever arm (5).
