Apparatus for mechanical beading machining and corresponding transfer machine comprising said apparatus

Transfer machine comprising:

• a plurality of working stations configured to perform mechanical processing on a plurality of workpieces;
• a support table comprising a plurality of support regions sequentially associable to the working stations and configured to support the workpieces;
• at least one apparatus for mechanical beading machining comprising:
• a support unit configured to support a workpiece;
• a processing unit facing the support unit and comprising:
• a tool configured to plastically deform the workpiece and perform a mechanical beading machining;
• a spindle configured to support and rotate the tool about a machining axis;
• actuation members associated to the spindle and adapted to actuate the rotation of the tool about the machining axis;
• wherein the spindle comprises:
• a first body configured to be driven in rotation by the actuation members about the machining axis;
• a second body mounted on the first body eccentrically with respect to the machining axis, the second body being rotatably connected to the first body about an adjustment axis distinct from the machining axis, the tool being mounted on the second body eccentrically with respect to the adjustment axis;
• wherein the machining axis is parallel to the adjustment axis, the machining axis being separated from the adjustment axis by a first distance defining the eccentricity of the second body with respect to the first body;
• wherein the tool has a tool axis parallel to the adjustment axis, the tool axis being separated from the adjustment axis by a second distance defining the eccentricity of the tool with respect to the second body;
• wherein the first distance and the second distance are equal
• wherein at least one working station comprises the processing unit of the apparatus for mechanical beading machining;
• and
• wherein at least one support region comprises the support unit of the apparatus for mechanical beading machining.