| 摘要 |
1508531 Balancing HOFMANN GmbH & CO KG MASCHINENFABRIK Gebr 4 Aug 1976 [30 Aug 1975] 32508/76 Heading F2U [Also in Division B3] Apparatus 6 for compensating for unbalance of a rotary body such as a grinding wheel 1 comprises an annular housing 8 which is adapted to be carried by the spindle 3 in a position between the rotary body and the spindle mounting 5 and which is divided by radial walls into chambers each having an inlet at a different radius, and means, such as supply lines 11, for injecting balance liquid into the inlets and chambers in dependence on unbalance of the rotary body. The annular housing 8 may be divided into four chambers each being supplied with balance liquid through supply lines 11 and automatic or mannually operated valves 10 from a reservoir 9 housed in the spindle mounting 5. A second balancing apparatus 12 of similar construction may be employed adjacent the belt pulley 7, this having its own reservoir 14 or one common to both. The balancing apparatus 6 and 12 may be used for fine balancing after a coarse balancing operation has been carried out using balance weights provided in the grinding wheel hub 2. |
