| 摘要 |
A micrometrically adjusted tool arm assembly for mounting on a spindle or a non-rotating support has a tool arm with a mount thereon for generally centrally supporting a tool bar. Only the end sections of the arm are secured to a base support and a slot system extends axially through the arm so that the central section can move radially relative to the ends of the arm. A micrometrically adjustable positioner mechanism engages the central section in a position relative to the slot system to provide a rigid backup for the tool bar. When the assembly is mounted on a spindle a releasable lock is provided which functions to deform the slot system and move the central section radially to engage positioner mechanism at a preselected position.
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