Two-Step Incremental Sheet Forming of Profiled Hollow Parts

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This invention describes a forming method for creating profiled hollow bodies using a two-stage incremental sheet metal forming process. First, a workpiece is shaped into a hollow body through rotary swing bending, where the material is applied coaxially onto a rotating die. Next, a second rotating tool forms specific profiles onto the hollow body while it rests on the die.

Use CasesContent extracted from patent full text and abstract with AI.

• Manufacturing automotive parts such as exhaust systems, drive shafts, or structural components with specific profiles.
• Production of aerospace components that require lightweight yet strong hollow structures.
• Creation of custom-designed tubes or pipes for industrial, architectural, or mechanical applications.
• Fabrication of complex-shaped containers or housings for machinery or consumer products.

BenefitsContent extracted from patent full text and abstract with AI.

• Enables precise forming of complex profiled hollow bodies with high reproducibility.
• Reduces the number of manufacturing steps compared to conventional methods, improving efficiency.
• Allows flexible production of various shapes and profiles without costly dedicated molds or dies for each design.
• Supports material savings and lightweight design due to accurate sheet metal forming.

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Patent Abstract

The invention relates to a forming method for the production of profiled hollow bodies, using a two-stage incremental sheet metal forming process, wherein in a first process step a workpiece in the form of a hollow body is produced by means of rotational swing bending such that the workpiece rotates coaxially with a driven die. By feeding a cylindrical tool in the form of a pivoting movement, the workpiece is applied to the die. In a second process step, a profiling is introduced into the workpiece resting on the die by means of a second rotating tool fed to the die.