Drilling machine tool

Abstract

A drilling machine tool is disclosed having a machine tool body with a movable frame which is movable in the three axial directions X, Y and Z, of a rectangular coordinate system. The tool includes a working head provided on said movable frame, said head having at least one drilling spindle thereon, wherein said X direction is the direction in which said movable frame advances to and retreats from a workpiece at the general level of the workpiece, said Y direction is perpendicular to the X direction and said Z direction is generally up and down and is perpendicular to both said X and Y directions; X, Y and Z shafts corresponding to X, Y and Z directions, respectively, each shaft operatively connected with said movable frame for moving said frame in the X, Y and Z directions; a plurality of driving sources, one each corresponding with each of said shafts and operatively connected thereto for driving said shafts; and wherein said frame is movable such that said spindle is operable when inclined with respect to the X axis as well as when said spindle is parallel to the X axis, and said frame is driven along the axial centerline of said spindle in response to said driving sources.