公开(公告)号：US06572119B2

公开(公告)日：2003-06-03

申请号：US09987705

申请日：2001-11-15

Applicant: Manfred Selb

Inventor： Manfred Selb

IPC: B23B3120

CPC classification number: B23B31/201 ,  B23B2226/18 ,  B23B2226/31 ,  B23B2228/10 ,  B23B2231/2008 ,  Y10T279/17538 ,  Y10T279/17547 ,  Y10T279/3487 ,  Y10T279/3493 ,  Y10T409/30952

Abstract: A clamping sleeve/tensioning device comprises a clamping sleeve that is positioned inside a conical centering opening of a housing body. A chucking mechanism with rotational body is used to tighten or release the clamping sleeve. The rotational body is provided with a central opening, having an internal thread or an external thread, which directly engages in the clamping sleeve. The rotational body preferably is supported via a roller bearing on a corresponding bearing surface of the housing body. The rotational body is driven via a reducing gear, for example via a worm. As a result, high tensioning forces can be generated in connection with the relatively small diameter of the tensioning thread and the small conical angle. The small diameter of the tensioning thread ensures a low thread friction.