Method for producing metallic, non-rotationally symmetrical rings with a constant wall thickness over their circumference
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United States of America Patent
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Aug 30, 2005
Grant Date -
Sep 4, 2003
app pub date -
Jul 11, 2001
filing date -
Jul 12, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention is directed to a method and a device for producing metal, non-rotationally symmetric rings with a constant wall thickness along their circumference, particularly cam rings, starting from a hot-rolled pipe from which individual portions are severed, mechanically machined and subsequently hardened and tempered. Ring blanks of equal width are severed from the pipe and are mechanically machined on all sides, and the non-rotationally symmetric shape is produced by cold forming, the pipe or the severed ring blank having a structure suitable for cold forming.
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