| 摘要 |
For adjusting initial tension in an angular contact ball bearing (14,16) fitted in a spindle (10), a first tensioning element (36) has one or more piezoactuators (42) with variable longitudinal dimensions. It also relies on these dimensions for exerting a variable initial tension force on the bearing's shell (68,74). To affect the flow of force between the first tensioning element and the bearing's shell, a hydraulic element (44) is fitted with a means of ascending (46) and descending (48) force on its input and output sides. A hydraulically operating cross section (47) for the ascending force mechanism is greater than a hydraulically operating cross section (49) for the descending force mechanism. |
