Abstract: The invention relates to a device for swiveling an object around a stationary axis (16) which lies outside the space occupied by the device. The inventive device is characterized by unusually great rigidity. A supporting coupler (5) and a guiding coupler (10) are guided parallel to the frame (1) with the aid of cross-sliding elements. The supporting coupler (5) and the guiding coupler (10) are connected to a crank (4) by means of one respective revolute joint, the crank (4) guiding the supporting coupler (5) and the guiding coupler (10) along concentric, non-identical circular paths. The supporting coupler (5) and the guiding coupler (10) are provided with a second revolute joint located at the same distance from the first revolute joint, i.e. a revolute joint (5b) for the supporting coupler at the output end and a revolute joint (10b) for the guiding coupler at the output end, via which the two couplers (5, 10) are jointly connected to an output member (9).

Abstract: A device and method for calibrating swivel assemblies (21), particularly on cutting machines. Calibration of a tool on the machines mentioned above, portal robots, and the like, to the so-called Tool Center point (TCP) is done by a single movable measuring tip on the device, which has a direct operational connection of the tool, and a soft-ware-controlled measuring method for recording and repeatability of initial positions of a tool to be optimally adjusted. Determination of the TCP can be necessary after maintenance and repair work or after collisions on a machine tool or cutting machine. The device for calibrating swivel assemblies (21) includes a combination, as viewed from the frame (1), of three members, a first member (3), a second member (4), and a third member (5), displaceably connected among each other, with no play, to the frame (1) with no backlash by sliding joints (12, 13, 14) in all three axes of a Cartesian coordinate system.