Patent ID: 6473964
Filing Date: 2002-11-05
Classification: B22F,C22C,F01L,Y10T

Abstract:
A method of providing a camshaft, the method comprising:providing a camshaft tube having an outer surface; providing a cam lobe having an aperture therethrough sized to be received about the outer surface of the camshaft tube when said cam lobe is at a temperature greater than a predetermined temperature; heating the cam lobe to a temperature greater than the predetermined temperature; positioning the camshaft tube and the cam lobe so that the camshaft tube is disposed through the aperture of the cam lobe and the cam lobe is at a predetermined position and angular orientation relative to the camshaft tube; cooling the cam lobe to a temperature below the predetermined temperature to affix the cam lobe to the outer surface of the camshaft tube at the predetermined position and angular orientation; increasing the density of at least a region of the cam lobe to adjust at least one of the shape and the dimensions of the cam lobe.