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US 4,078,415 AGranted
Process of manufacturing shaped bodies by cold shaping
AssigneePeltzer & Ehlers
InventorsFriedrich-Karl Koch, Christoph Sieber, Horst Schmidt
Life of this patent
Estimating the term…
Abstract
A process for producing shaped bodies which are essentially hollow with particularly configured cavities at each end of the body. The process includes a unique step of simultaneously forming the final configured cavity at one end of the body and reducing the exterior diameter of the same end of the body.
Claims6
A method of manufacturing shaped bodies from a stamped part by cold shaping with a series of dies and rams wherein said bodies have a cavity established at each end of the finished hollow body with a different outside diameter at each end, said method comprising the steps of:
- precupping the first end of said part in one of said series of dies;
- precupping the second end of said part in a further one of said series of dies;
- simultaneously forwardly extruding said second end of said part and forming a reduced outside diameter on said second end of said part in another of said series of dies, said second end being completely cupped;
- and
- rearwardly extruding said first end of said part in said another of said series of dies, said first end being completely cupped as a result of the operation in the said series of dies.
2 more elements
Dependencies are inferred from the claim text.