Double-sided incremental forming (DSIF) is a relatively new dieless forming process which uses two hemispherical ended tools, one on each side of the sheet, moving along a predefined trajectory to locally deform a peripherally clamped sheet of metal. DSIF provides greater process flexibility, higher formability, and eliminates the tooling cost when compared to conventional sheet forming processes. While DSIF provides much improved geometric accuracy compared to other incremental forming processes, current toolpath planning strategies suffer from long forming times. A novel mixed double-sided incremental forming (MDSIF) toolpath strategy is proposed in the present study. It simultaneously reduces the total forming time by half while preserving the best currently achievable geometric accuracy. The effect of the forming parameters, i.e., of the incremental depth and of tool positioning on the geometric accuracy of the parts formed with MDSIF was investigated and compared to those formed by traditional DSIF strategies.
A Mixed Double-Sided Incremental Forming Toolpath Strategy for Improved Geometric Accuracy
Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received December 22, 2014; final manuscript received June 22, 2015; published online September 4, 2015. Assoc. Editor: Yannis Korkolis.
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Zhang, Z., Ren, H., Xu, R., Moser, N., Smith, J., Ndip-Agbor, E., Malhotra, R., Cedric Xia, Z., Ehmann, K. F., and Cao, J. (September 4, 2015). "A Mixed Double-Sided Incremental Forming Toolpath Strategy for Improved Geometric Accuracy." ASME. J. Manuf. Sci. Eng. October 2015; 137(5): 051007. https://doi.org/10.1115/1.4031092
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