公开(公告)号：US4067217A

公开(公告)日：1978-01-10

申请号：US776707

申请日：1977-03-11

Applicant: Gerard Bisaillon ,  Gilles Bisaillon

Inventor： Gerard Bisaillon ,  Gilles Bisaillon

IPC: B21D53/30 ,  B21H1/10

CPC classification number: B21D53/30 ,  Y10T29/49531

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.

Abstract translation: 在包括具有用于容纳坯料的成型的内部模腔的阴模具和阴模的设备中由圆柱形坯料形成轮缘，所述阴模具包括一对带有偏心部分的轴，所述偏心部分承载辊子以顺序地抵靠坯件 逐渐形成轮辋。 在轮缘形成期间，安装在转台上的阴模旋转，同时阳模静止。 坯料保持在阳模的环部和阴模的中心部分之间。 承载辊的轴独立地是可旋转的，因此只有一组辊在形成期间的任何时间积极地形成轮辋。