Abstract: The present disclosure relates to an accessory for centering a tool or a tool-holder spindle on an axis of rotation X-X? of a rotating guide bush of a machining appliance, wherein it includes a straight body with longitudinal axis F-F? including, at a first end, an alignment member for aligning said axis F-F? with the axis X-X? of the rotating guide bush and, at a second end, a head mounted rotatably mobile about the axis F-F? and including a positioning member capable of receiving a positioning tool, in particular a measurement probe. The disclosure likewise relates to a centering method using such an accessory and a centering device including same.

Abstract: The present disclosure relates to an accessory for centering a tool or a tool-holder spindle on an axis of rotation X-X? of a rotating guide bush of a machining appliance, wherein it includes a straight body with longitudinal axis F-F? including, at a first end, an alignment member for aligning said axis F-F? with the axis X-X? of the rotating guide bush and, at a second end, a head mounted rotatably mobile about the axis F-F? and including a positioning member capable of receiving a positioning tool, in particular a measurement probe. The disclosure likewise relates to a centering method using such an accessory and a centering device including same.