Rotating hollow clamping device for machine tools for actuating collets and chucks

摘要

The invention relates to rotating hollow clamping devices for machine tools in which the clamping force of an outer, non-rotating cylinder is transmitted via rolling elements to a cylinder system rotating together with the spindle of the machine tool. The rotating cylinder system consists of two cylinders hydraulically connected to one another and having a different piston area, as a result of which the axial force transmitted by the rolling elements is increased. <IMAGE>