| 摘要 |
An expandable mandrel for holding a workpiece, including a mandrel body having an interior surface and an exterior surface. The interior surface defines at least first and second interior regions separated by a transition surface, the first region having a cross sectional area greater than a cross-sectional area of the second region. A plurality of slots extend between the interior surface and the exterior surface. A slave actuator having a bearing surface is at least partially disposed in the first region, and a master actuator is provided for urging the bearing surface against the transition surface to expand the mandrel against the workpiece.
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