Investigation on Automotive Fender Fabrication Combining Stretch Forming and Incremental Forming

Abstract

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.

Key words: fender, stretch forming, incremental forming, blank holding pressure, geometric accuracy

CLC Number:

TG 386

SONG Xiucheng，LU Bin，CHEN Jun. Investigation on Automotive Fender Fabrication Combining Stretch Forming and Incremental Forming[J]. Journal of Shanghai Jiaotong University, 2013, 47(05): 754-759.

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