The flow-forming forming machine is disclosed. Flow forming the molding machine according to this embodiment, with the rotatable mandrel by the mandrel drive unit, the center possible tail stock rotated by the tail stock driving, to the mandrel and can be in contact with the side of the workpiece which is rotatably supported by the tail stock in the flow-forming molding machine comprising a spinning roller to flow forming the workpiece, the mandrel has, by limiting that the side flanges of the flow by setting the length forming the work piece is no longer extends in the flow-forming direction, a plurality of workpieces even if the sequential flow forming operations characterized in that this is followed, the edges to be implemented to a uniform shape of said one flange end extends to the lateral limiting wall protrusion is provided. According to this embodiment, by providing the restrict projection wall to be extended laterally to the mandrel by limiting that the side flanges of the workpiece the flow by setting the length forming is no longer extends in the flow-forming direction, the one flange end of the aluminum wheel the height difference can be formed uniformly to a minimum condition. Further, the present embodiment is, that in particular the central shape of the hub portion of the aluminum wheel deformation by forming a protrusion on the mandrel in order to distribute the pressure applied to the edge of the vicinity of the aluminum wheel to the rim of the aluminum wheel by the tail stock It can be minimized.