| 摘要 |
The present invention relates to a method and a device for grinding buttons of a rock drilling bit, said device including a grinding head (10), a rotatable grinding spindle (56) protruding from the grinding head (10), the free end of the gri nding spindle (56) being adapted to drivingly and detachably carry a grinding cup (82). In prior art devices the supply of flushing medium to the button to be ground i s effected via the grinding head (10). This complicates the design of the grinding head . The characterizing feature of the present invention is that the flushing medium is supplied to the portion of the grinding spindle (56) that is located outside the grin ding head (10).
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