Gear teeth rotary-shaving or roll-finishing machine

Machine for finishing gear wheel teeth by shaving or rolling by means of a toothed rotary tool adapted to operate in tight meshing engagement with the gear wheel for finishing the teeth thereof, which comprises means for supporting the tool along its axis of rotation, a motor for rotatably driving said tool, means for supporting said gear wheel along its axis of rotation, the two axes of rotation of the tool and gear wheel, respectively, having at least one common perpendicular, three motorized driving means for generating respectively between said tool support means and said gear wheel support means, three powered relative movements consisting of a movement in a direction parallel to said common perpendicular and of two movements transverse to each other in planes respectively perpendicular to said common perpendicular, and synchronous programmable servo-control means for controlling said motor for rotatably driving said tool and the two motorized driving means for producing said two transverse movements.