Method for producing a hollow profiled section
AssigneeThyssenKrupp Steel Europe AG
InventorThomas Flehmig
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Abstract
The object of setting out a method, with which substantially crack and/or fold-free greatly curved hollow profiles can be produced, is achieved by a method for producing a hollow profile having a curved portion which has a center of curvature, wherein a blank is preshaped to form a U-shaped profile by introducing a punch into a first die and the U-shaped profile is shaped with a second die to form an O-shaped profile having at least one longitudinal slot, the blank being preshaped to form a U-shaped profile whose outer limb which faces away from the center of curvature and which is associated with the curved portion is at least partially higher than the inner limb thereof which faces the center of curvature and which is associated with the curved portion.
Claims12
Method for producing a hollow profile having a curved portion which has a center of curvature, wherein a blank is preshaped to form a U-shaped profile by introducing a punch into a first die and the U-shaped profile is shaped with a second die to form an O-shaped profile having at least one longitudinal slot, comprising the steps of:
- preshaping the blank to form a U-shaped profile with an outer limb which faces away from a center of curvature of the U-shaped profile and which is arranged for forming the curved portion of the hollow profile and is at least partially higher than an inner limb of the U-shaped profile which faces the center of curvature and which is arranged for forming the curved portion of the hollow profile.
Dependencies are inferred from the claim text.