| 摘要 |
An improved machine tool for operating on bar stock includes a gripper which is moved away from a chuck to pull bar stock to a work station. When the gripper has been moved through a distance sufficient to pull a desired length of bar stock to the work station, a numerical control system is effective to interrupt movement of the gripper and bar stock. The numerical control system enables different lengths of bar stock to be fed to the work station on successive cycles of operation of the machine tool in response to stored numerical control data. In one embodiment of the machine tool, the gripper is advantageously mounted on a turret which supports tools and is operated by the numerical control system in accordance with a predetermined program to machine the length of bar stock fed to the work station.
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