Abstract
Die-less spinning is developed for its advantages of low cost and high flexibility. Recently, the spherical surface roller is adopted in die-less spinning and exhibits nice characteristics. The wall thickness of the parts is unchanged or even thickens by using the spherical surface roller. However, the spinning process is still unstable and the wall at the mandrel shoulder decreases seriously. So, the orthogonal experiment is designed to explore the influence degree of the influencing factors on the wall thinning. FE model is established to analyze the stress and strain states of the material during the die-less spinning process. According to the results of the experiment and simulation, wall angle, wall thickness, and sheet diameter have a greater effect on the material thinning while the influences of speed rate and corner radius are less. The material thinning mainly develops in the preformed stage. In the forming stage, whether the material continues to be thinned depends on the diameter of the sheet.
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Funding
This work was supported by the Aviation Science Foundation, China (No. 2018ZE54028); National Natural Science Foundation of China, China (No. 52275355); Liaoning Provincial Department of Education Fund, China (No. JYT2020005); National Natural Science Foundation of China, China (No. 52001217); and Open Foundation of Key Lab of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process, China (No. SHSYS202005). The authors wish to express their gratitude.
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The first author designed and conducted the experiments and wrote the paper.
The second author (corresponding author) is the supervisor teacher and helped design the experiments and provided the experiment setups.
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Zhou, S., Han, Z., Jia, Z. et al. Research on the wall thinning influencing factors in die-less spinning by hemisphere roller. Int J Adv Manuf Technol 126, 2497–2508 (2023). https://doi.org/10.1007/s00170-023-11296-2
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DOI: https://doi.org/10.1007/s00170-023-11296-2