公开(公告)号：US11292098B2

公开(公告)日：2022-04-05

申请号：US16812551

申请日：2020-03-09

Applicant: CITIC Dicastal CO., LTD.

Inventor： Xinghua Liu ,  Zhiliang Zhang ,  Zhiqiang Lu ,  Rui Liu ,  Di Cao

IPC: B23Q3/18 ,  B60C25/05

Abstract: A hub chuck, includes a clamping center shaft, a top cover plate, a middle step gear and a tapered bottom plate. In a three-layer structure of the cover plate, the step gear and the tapered bottom plate of the chuck, the maximum outer ring diameter of the cover plate is smaller than that of the step gear, the minimum outer ring diameter of the step gear is smaller than that of the tapered bottom plate, the lower part of the step gear and the upper surface of the tapered bottom plate form a ring groove, a lower rim of a hub can be caught in the ring groove, and tapered teeth at the upper part of the step gear can be pressed to an inner wheel lip.