Fundamental Research and Draw Die Concepts for Deep Drawing of Tailored Blanks 950921
According to the present state of knowledge, the use of “Tailored Blanks” with different sheet thicknesses and/or grades represents an interesting manufacturing alternative in the design and development of sheet metal parts in the automotive industry. In order to assess the forming behavior, fundamental research was conducted on laser and mash seam welded blanks. Based on this experimental findings, a segmented draw die was designed and built to determine the limits of the metal forming process by deep drawing of car body parts. The results with this draw die showed that a uniform blankholder pressure must be guaranteed during the forming process in the flange region of the part. This necessitated definite slots in the region of the weld line for the mash seam welded blanks. Furthermore, a die concept was presented to enable an equalization of both sheet thickness steps and sheet thickness fluctuations, without requiring replacement of the respective draw die components.
Citation: Siegert, K. and Knabe, E., "Fundamental Research and Draw Die Concepts for Deep Drawing of Tailored Blanks," SAE Technical Paper 950921, 1995, https://doi.org/10.4271/950921. Download Citation
Author(s):
Klaus Siegert, Edgar Knabe
Affiliated:
University of Stuttgart
Pages: 13
Event:
International Congress & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Automotive Stamping Technology-SP-1067, SAE 1995 Transactions: Journal of Materials and Manufacturing-V104-5
Related Topics:
Forming
Welding
Parts
Research and development
Lasers
Metals
Pressure
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