Spring leaf and method for producing a spring leaf
AssigneeHendrickson Commercial Vehicle Systems Europe GmbH
InventorJoerg Zamberger
Life of this patent
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Abstract
In a method for producing a spring leaf (2) for a leaf spring, in particular a parabolic spring or suspension spring, wherein the spring leaf (2) comprises two end regions, a central region, a top side which is subjected to tensile stress in the operative state, and a bottom side (1) which is subjected to pressure in the operative state, at least one hole (3) is introduced into the bottom side (1). The bottom side (1) is peened locally in the region around the hole (3).
Claims17
A method for producing a spring leaf for a leaf spring, wherein the spring leaf has two end regions, a central region, a top side which is subjected to tension in the operative state, and a bottom side which is subjected to pressure in the operative state, wherein the spring leaf is hot-deformed and rolled, wherein at least one hole is introduced into the bottom side, wherein the top side is peened under pretensioning of the spring leaf producing tensile stresses on the bottom side, and after peening of the top side, the bottom side is peened locally and only in the region around the at least one hole producing compressive stresses superimposing the tensile stresses.
A spring leaf for a leaf spring, wherein the spring leaf comprises two end regions, a central region, a top side which is subjected to tension in the operative state, a bottom side which is subjected to pressure in the operative state, and wherein the bottom side has at least one hole, wherein the spring leaf is hot-deformed and rolled wherein the top side is peened under pretensioning of the spring leaf producing tensile stresses on the bottom side, and after peening of the top side, the bottom side is peened locally and only in the region around the at least one hole producing compressive stresses superimposing the tensile stresses.
Dependencies are inferred from the claim text.