Hydraulic expansion chuck tool i.e. expanding mandrel, for high-precision clamping of ellipsoidal cams of cam shaft of internal combustion engine, has expansion sleeve connected with base body at region of annular collar in form-fit manner

摘要

The tool (1) has an expansion sleeve (8) comprising clamp points (16), and three pressure chambers (7) attached to the clamp points. Supports (18) are provided at an inner wall of the expansion sleeve between the pressure chambers and in an axial direction of the sleeve. The supports are connected with an expansion sleeve receiver (4) of a base body (2) in a force-fit manner, where the expansion sleeve receiver supports the expansion sleeve. The expansion sleeve is connected with the base body at a region of an annular collar (3) in a form-fit manner.