| 摘要 |
Apparatus for spinning a work piece includes a work piece platform with a plurality of spaced apart, symmetrically positioned work piece supports arrayed about its periphery. Each of the supports includes a resilient bumper that serves both to support the work piece and as a friction brake to retard slippage of the work piece relative to the platform when the platform and work piece are rotating. Also arrayed about the periphery is a plurality of work piece gripper assemblies configured to center the work piece in contact with the work piece supports. The gripper assemblies include a gripper finger configured to pivot from a non gripping position to a gripping position in response to centrifugal force generated by the rotation of the platform. In the work piece gripping position the gripper finger contacts the edge of the work piece. |
