Patent ID: 7127814
Filing Date: 2006-10-31
Classification: B23D,F16C,Y10T

Abstract:
1. A method for machining workpieces which have at least one annular-shaped workpiece section that is to be provided with a split bore, the method comprising the following steps: a) providing a workpiece having at least one preset breaking point and at least one annular-shaped workpiece section defining a bore; b) applying a spreading force to an inner periphery of the bore for fracture-splitting the at least one annular-shaped workpiece section and for creating fracture-split workpiece parts corresponding with one another with a split bore; c) mating and detachably connecting the fracture-split workpiece parts resulting from step b); d) applying of at least one closed annular plain-bearing layer to the inner periphery of the split bore of the fracture-split workpiece; e) disengaging the connection between the mated workpiece parts; f) applying a spreading force to the entire inner periphery of the closed annular plain-bearing layer for fracture-splitting the plain bearing material layer, the entire area of the annular-shaped plain-bearing material layer being elastically supported at its inner periphery.