Cold rolling method and apparatus for forming annular pieces
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United States of America Patent
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Nov 29, 2005
Grant Date -
Dec 16, 2004
app pub date -
Mar 28, 2002
filing date -
Apr 4, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A cold rolling method and apparatus for forming an annular workpiece (10) with an outer surface (11) having a given contour and an inner surface (12) having a given contour, starting from an annular blank. A rotatable forming mandrel (21) has a working surface (21a) with a contour corresponding to that of inner surface (12) to be formed. A forming die (51) has a cavity (52) with an inner working surface (53) in form of a surface of revolution corresponding to the outer surface (11) to be formed.
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