Vibratory machining device

A machining device comprising a framework, a transmission shaft that extends along an axis and is able to be coupled to a cutting tool, and a drive mechanism for driving the transmission shaft, said mechanism comprising a rotation member that is coupled to the transmission shaft and is able to drive the transmission shaft rotationally about its axis with respect to the framework, a drive member that is in helical connection with the transmission shaft and is able to drive the transmission shaft translationally along its axis in a feed movement with respect to the framework, depending on the relative rotational speed of said rotation member and drive member, and means for generating axial oscillations that are able to generate an oscillating feed movement of the transmission shaft along its axis, characterized in that said drive member is mounted so as to be able to move translationally along the axis with respect to said framework and is positioned between an end for coupling the transmission shaft to said cutting tool and said rotation member, said means for generating axial oscillations comprising an electromechanical actuator mounted in a fixed location, associated with said framework, in front of said drive member to which said electromechanical actuator is able to be coupled in order to make it oscillate translationally, so as to superpose an axial oscillation component on said feed movement.