Patent ID: 6600250
Filing Date: 2003-07-29
Classification: B23Q,Y10T

Abstract:
A machine tool comprising:a fixed supporting frame; at least one toolhead fitted movably to said frame; a tool mounted on said toolhead and movable therewith; and an actuating device for moving said tool with respect to said frame and within a predetermined volume; said actuating device comprising a main electric motor in turn comprising a main stator integral with said frame, and a main rotor fitted to the main stator and rotating about a main axis with respect to the main stator; at least one secondary electric motor in turn comprising a secondary stator integral with said main rotor, and a secondary rotor fitted to the secondary stator and rotating about a secondary axis movable with said main rotor; and at least a machining unit comprising straight guide means supported eccentrically by said secondary rotor, and powered slide means angularly fixed in relation to said straight guide means and movable therealong in a direction parallel to said main axis and said secondary axis; said toolhead being mounted on said powered slide means; said tool being mounted on said toolhead for rotation in relation thereto about a tertiary axis parallel to said main axis and said secondary axis; and each said axis being separated from each of the other axes by distances, each of which is less than a radius of the main rotor.