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公开(公告)号:US06298702B1
公开(公告)日:2001-10-09
申请号:US09439100
申请日:1999-11-12
申请人: Helmut Korte
发明人: Helmut Korte
IPC分类号: B21D2214
摘要: A method for forming seamless tubular workpieces, such as vehicular wheel rim components. In the method, a flat circular blank having a central aperture is expanded into the interior of a hollow mandrel using a mushroom-shaped spinning roller. In this expansion operation, the blank is caused to take on a tubular shape having an exterior contour which conforms to the interior contour of the hollow mandrel.
摘要翻译: 一种形成无缝管状工件的方法,例如车轮轮缘部件。 在该方法中,具有中心孔的扁平圆形坯料使用蘑菇形纺丝辊扩展到中空心轴的内部。 在这种膨胀操作中,使坯料呈现出具有符合中空心轴的内部轮廓的外部轮廓的管状形状。