Apparatus for forming a wheel rim
OwnerGerard Bisaillon, Gilles Bisailloninventors
Life of this patent
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Abstract
A wheel rim is formed from a cylindrical blank in an apparatus including a female die with a profiled, internal die cavity for receiving the blank and a male die, which includes a pair of shafts with eccentric portions carrying rollers for sequentially bearing against the blank to gradually form a wheel rim. During formation of the wheel rim, the female die, which is mounted on a turntable, is rotated while the male die is stationary. The blank is held between a ring portion of the male die and the central portion of the female die. The shafts carrying the rollers are independently rotatable, so that only one set of rollers actively forms the rim at any time during formation.
Claims10
An apparatus for forming a wheel rim from a cylindrical blank comprising a rotatable turntable;
- first drive means for rotating said turntable;
- a female die mounted on said turntable for rotation therewith, said female die having a generally cylindrical, profiled cavity for receiving a cylindrical blank;
- second drive means for opening and closing said female die;
- a male die including at least two separate roller shafts and rollers mounted on each roller shaft;
- third drive means for inserting the male die into the blank in the female die;
- and fourth drive means for moving each roller shaft individually towards and away from the blank and female die, whereby when the blank and female die are rotating, the blank is deformed sequentially against the female die cavity to form a wheel rim.
Dependencies are inferred from the claim text.