| 摘要 |
A grinding machine ( 3 ) for grinding drill bits ( 6 ), having a grinding unit ( 9 ) which includes a motor unit ( 10 ) and a spindle ( 11 ) which is driven by the motor and which carries a grinding wheel ( 12 ) for rotation by the spindle ( 11 ) and for grinding a button bit ( 8 ) in the drill bit ( 6 ), wherein the grinding unit ( 9 ) together with the grinding wheel ( 12 ) is adapted to swing forwards and backwards about a vertical shaft which coincides generally with the geometric axis of the button bit ( 8 ).
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