Hemming

In automotive part production, hemming takes place in assembly as a secondary operation after deep drawing, trimming and flanging operations and is used to join two sheet metal parts (outer and inner) together. The accuracy of the hemming operation is very important since it affects the surface appearance and surface quality of the component. These two aspects are extremely important as they are what attract the attention of potential customers.

Part quality and perfect finish are not only essential for luxury cars, which are produced in small numbers, but are also dominant factors for middle-class and low-end car models produced in volume. Material deformations, which occur during the hemming process, can lead to dimensional deviations and other typical hemming defects, including splits and wrinkles in the flange, material overlaps in the corner areas and material roll-in.

To address these important issues, AutoForm Engineering has developed a software which allows for the efficient planning of the hemming process. The software supports roll, conventional die and table top hemming. Depending on the product development process phase, the software supports two use cases, namely quick and advanced hemming. Quick hemming is used in the early stages of product development and production planning when the die layout of the drawing and forming operations is still not available. Advanced hemming is used in process engineering when the detailed definition of the forming operations is already available. In addition, the software allows for the prediction of full assembly springback after hemming.



Related Product:

AutoForm-HemPlannerplus

Brochure:

AutoForm-HemPlannerplus – Software for Efficient Planning of Hemming Processes

Training:

Hemming

Customer Use Case:

Hemming of Thin Gauged Advanced High-Strength Steel

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