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Investigation on Automotive Fender Fabrication Combining Stretch Forming and Incremental Forming |
SONG Xiucheng,LU Bin,CHEN Jun |
(National Engineering Research Center of Die and Mold CAD, Shanghai Jiaotong University, Shanghai 200030, China)
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Abstract Body-in-white development is a long-time and high-cost procedure in automobile production. With the example of an automotive fender, a new hybrid incremental sheet forming workbench was developed to realize the combination of pre-stretching, incremental forming and trimming by one clamping system. Surface geometry was measured by laser scanning and compared with original CAD model, and the results demonstrate that the hybrid method can improve geometric accuracy of the forming parts. The forming accuracy and surface quality of detailed features are improved by modified tool path generation method, which is based on local features. Thinning also is effectively relieved by adjusting the blank holding pressure at pre-stretching stage.
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Received: 22 October 2012
Published: 28 May 2013
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