| 摘要 |
The invention relates to a coordinate measuring device (10) having a workpiece holder in the form of a rotary table (32), a measuring head (20) having a measuring element (22) and a frame, on which the measuring head (20) is arranged. The frame has a first frame part (14), which can be moved relative to the workpiece holder along a first movement axis (Y). A second frame part (16) can be moved relative to the workpiece holder along a second movement axis (X). A third frame part (18) can be moved relative to the workpiece holder along a third movement axis (Z). To determine the shape contour on an object to be measured (30), the object to be measured is arranged on the rotary table (32). The measuring head (20) is positioned at a defined position along the first, second and third movement axes (Y, X, Z). The rotary table (32) is then rotated about a further axis (36), while the measuring head (20), with the aid of the measuring element (22), records current measured values which represent spatial positions of measuring points on the object to be measured (30). The shape contour (43) is determined on the basis of the measured values. The measuring element (22) is mounted on one or more of the frame parts (14, 16, 18) via at least one hydraulic bearing, in particular at least one air bearing (48a, 48b), and the at least one hydraulic bearing (48a, 48b) is deactivated during the recording of the current measured values. |
