Patent ID: 6796878
Filing Date: 2004-09-28
Classification: B23Q,Y10S,Y10T

Abstract:
An NC machine tool with a tiltable spindle unit having a plurality of control axes, comprising:a spindle unit having a spindle serving both as a vertical spindle for keeping a tool in a vertical position and an inclined spindle for keeping the tool in a inclined position; a column for installing the spindle unit thereon; a table for supporting a workpiece; a turning shaft for pivotably supporting the spindle unit on a vertical plane, and a tilting means for changing the position of the spindle unit between the vertical position and the inclined position; wherein the turning shaft has a center of rotation which is arranged in the vicinity of a top end of the tool in alignment with a center line of the tool, wherein said table is provided with a rotary unit, located on the table, for rotating the workpiece on a center line of the workpiece, said rotary unit having a rotating shaft and a chuck means mounted to said rotating shaft, said chuck means capable of holding the workpiece, and wherein said turning shaft and said rotating shaft are perpendicular to each other in a horizontal plane.