| 摘要 |
For the purpose of renovating a turbine chamber a cruciform support (2) is attached to the lower part of the chamber and a further cruciform support (20) is attached to the upper part of the chamber, and a rotatable and raisable and lowerable tool holder (16 min ) is arranged between the supports for carrying out precision work on the chamber wall. The machine includes a pillar (6) which is rotatably journalled on a thrust bearing (5) and two radial plane bearings (8, 11). Attached to the pillar is a slide path (15) having guide screws (16). A platform (16) is guided in the slide path. The pillar (6) is driven for rotation by a motor (30) and the guide screws (16) are forcibly rotated together with the pillar (6). |
