Patent ID: 6415694
Filing Date: 2002-07-09
Classification: B23B,Y10T

Abstract:
A method of precision machining a thin walled sleeve from a heavy walled tubular preform having an inside diameter and outside diameter, comprising the steps of:first machining the outside diameter of said preform to a finished size; chucking the finished machined outside diameter of the preform in a chuck having engagement surfaces substantially completely encircling and engaging said outside diameter along a total length of said preform to be machined internally while slightly compressing the same sufficiently to secure said preform therein; machining the inside diameter of said preform to a finished size to form said thin walled sleeve while providing a backing of said preform by said complete engagement of said chucking surfaces to prevent distortions thereof by forces generated during said machining step; and, removing said finish machined thin walled sleeve from said chuck.