Tensionable clamping fixture between drive spindle of machine tool and rotary tool

摘要

With the tool not fitted, the hole (2) of the chucking fixture on its half inner circumference (6) is bounded on the inside by an enclosure (7) with at least three contact points (8.1-8.3). The radial distances (10) of the contact points from the spindle axis (9), within the framework of the degree of freedom of compressing elastic deformation of the shaft and hole with the tool fitted, is smaller than, or at the most the same size as, the radial distances of the corresponding contact points of the shaft.