Rotationally Symmetrical Hub Forming With a Blind Hole

The patent applies flow forming process parameters to reshape metal blanks into rotationally symmetrical molded bodies with hubs and bell-shaped lower parts. By controlling the flow forming parameters (pressure, temperature, deformation rate), the process achieves sufficient load-bearing capacity while avoiding the high material input and cost of traditional forging. The parameter optimization allows plastic deformation that maintains structural integrity without requiring excessive material removal or additional machining operations.

The flow forming process uses controlled plastic deformation parameters to reshape the metal blank directly into the final geometry. This eliminates the need for excessive material input required by traditional forging, as the process progressively deforms the material into shape rather than requiring large initial blanks that must be subsequently machined down. The parameter control ensures structural integrity is maintained throughout the deformation process.

The patent merges multiple manufacturing operations into a single flow forming process. The hub formation, internal feature creation (such as blind holes and grease pockets), and bell-shaped lower part formation are all achieved in one continuous plastic deformation process rather than through separate forging and machining operations. This integration dramatically improves productivity while maintaining structural integrity through controlled deformation parameters.

The flow forming process uses precisely controlled deformation parameters to create internal features such as blind holes and grease pockets directly during the forming operation. The parameter control (pressure distribution, deformation sequence, tool geometry) ensures that internal features are formed with sufficient precision for their intended function, eliminating the need for subsequent costly machining operations while maintaining adequate quality.