Patent ID: 6634263
Filing Date: 2003-10-21
Classification: B23B,B29C,Y10T

Abstract:
A liner for supporting a workpiece concentric within a hollow spindle of a turning machine, comprising:an elongated sleeve member having a central through-opening extending along its entire length, said though-opening being formed for mating with said workpiece such that said through-opening can slidably receive said workpiece, for slidably receiving therein said workpiece, the outer diameter of said liner being slightly smaller than the inner diameter of the spindle such that the liner is slidably received within the spindle, said through-opening being concentric with the hollow spindle and having a cross-dimension slightly greater than the outer cross-dimension of the workpiece such that the workpiece is slidably received within said through-opening, said liner being of a unitary construction and contacting said workpiece substantially along its length within the liner to minimize out-of-concentric rotation of the workpiece during the machining process.