Patent ID: 7434299
Filing Date: 2008-10-14
Classification: B23B,B24B,Y10T

Abstract:
1. A method of forming an array of precisely and non-kinematically located curved features in a surface of a workpiece, the workpiece indexably positionable on a workpiece holder, the workpiece and the workpiece holder rotatable about an axis of rotation, the axis of rotation normal to a plane parallel to the surface of the workpiece, the method comprising: providing a plurality of inter-fitting locating grooves on the workpiece and the workpiece holder, the inter-fitting locating grooves operationally configured to indexably position the workpiece on the workpiece holder along at least one direction within the plane; positioning the workpiece on the workpiece holder whereby the inter-fitting locating grooves cause the axis of rotation to pass through a reference location on the surface of the workpiece; rotating the workpiece and the workpiece holder about the axis of rotation and machining a first curved feature into the surface of the workpiece centered at the reference location; re-positioning the workpiece on the workpiece holder whereby the inter-fitting locating grooves cause the axis of rotation to pass through a next location on the surface of the workpiece; and, rotating the workpiece and the workpiece holder about the axis of rotation and machining an additional curved feature into the surface of the workpiece centered at the next location, whereby the next location is precisely known relative to the reference location by the action of the inter-fitting locating grooves.