Methods and apparatus for supplying flushing fluid to a grinding head

摘要: Button inserts of a rock drilling bit are ground by positioning grinding cup against each button insert and rotating the while supplying flushing fluid thereto. The is conducted through an axial bore spindle on which mounted. An inner end mounted for rotation in head, rotated drive mechanism disposed within head. Flushing supplied to head at location outside has axially spaced parts that movable relative one another under force passing therethrough, order establish seal.