| 摘要 |
<p>A device for automatic balancing of an abrasive disk (2) mounted on the spindle (3) of a machine tool comprises an imbalance correcting mechanism consisting of a casing (5) with cavities (71, 72, 73) connected to a liquid source (19) through a distributing unit (9) consisting of hydraulic valves (10) with electromagnetic drives (121, 122, 123). The device further comprises cavity position pick-ups (171, 172, 173) mounted on the casing (4) of the machine tool and an imbalance pick-up (1) connected to an amplifier-shaper (13). The output of the amplifier-shaper (13) is connected to a common input of a coincidence circuit, the other inputs of which and the output are connected respectively to the outputs of the cavity position pick-ups (171, 172, 173) and to the input of the distributing unit (9), whereas the imbalance correcting mechanism is provided with at least one mark (21).</p> |
