| 摘要 |
To effect a rotary turning operation on workpiece, the workpiece is rotatably driven and a tool tip, which is mounted for rotational movement relative to the carrier, is brought into engagement with the rotating surface of the workpiece to remove material therefrom. A tool for effecting such an operation comprises a spindle supported by the carrier for rotational movement about the axis of the spindle, means for clamping the tool tip at one end of the spindle and means for applying an adjustable force between the spindle and the carrier to prevent the spindle being, in use, rotated about its axis by the frictional torque imparted by the rotating workpiece. There is also provided means for connecting the spindle to an external drive mechanism so that said spindle can be positively driven to rotate about its axis relative to the carrier.
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