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US 12,420,333 B2Granted
Method for producing a cylindrical hollow body made of aluminum or of an aluminum alloy or of a light metal alloy, cylindrical hollow body, and vehicle transmission
AssigneeZF Friedrichshafen AG
InventorsChristian Ruhl, Helmut Boehm
Life of this patent
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Abstract
A method for producing a cylindrical hollow body (20) made of aluminum, an aluminum alloy, or a light metal alloy, includes casting a hollow body (20) such that the hollow body (20) has an inner and an outer lateral surface (21, 22) and two axial end faces. The method also includes, during the casting process, making at least one defined notch (35, 35′) into one or more of the inner lateral surface (21), the outer lateral surface (22), and the two axial end faces.
Claims10
A method for producing a cylindrical hollow transmission shaft (20) of aluminum, an aluminum alloy, or a light metal alloy, the method comprising:
- casting the hollow transmission shaft (20) such that the hollow transmission shaft (20) has an inner lateral surface (21), an outer lateral surface (22), and two axial end faces and such that at least one defined notch (35, 35′) is molded into one or more of the inner lateral surface (21), the outer lateral surface (22), and the two axial end faces;
- and
- after the casting, at least partially skimming (3) the one or more of the inner lateral surface (21), the outer lateral surface (22), and the two axial end faces at the at least one defined notch (35, 35′),
- wherein the at least one defined notch (35, 35′) remains on the one or more of the inner lateral surface (21), the outer lateral surface (22), and the two axial end faces after the at least partially skimming (3).
1 more element
Dependencies are inferred from the claim text.