| 摘要 |
A method for the non-cutting production of a hub with a stepped hole, the method steps comprising: providing a metal round blank having a throughhole; providing a patch block in the throughhole and having a portion of the patch block spaced at a distance from the metal round blank so as to create a stepped area displaced from a plane of the top surface of the metal round blank; and, cold-forming the hub by use of at least one pressure roller with the at least one pressure roller fed radially towards the throughhole, wherein material from the metal round blank flows into the stepped area between the metal round blank and a portion of the patch block, thereby forming a stepped hole comprising a material web at an inner circumference of the hub. A hub with a stepped hole, produced from a metal round blank by a compression method.
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