Abstract
Automobile shock absorber bushings are hollow rotational parts in high demand, and rolling forming processes were investigated to increase productivity, reduce costs and improve the working environment. Based on simulation analysis, it was found that skew rolling is more suitable for the forming of automobile shock absorber bushings than cross wedge rolling; skew rolling could obtain a good workpiece outline and a regularly distributed inner hole, and the simulation results were verified by rolling experiments. By analysing the metal flow and strain field of the workpiece in a single ridge skew rolling process, the reasons for the insufficient wall thickness and annular groove defect in the inner hole of the protruding step were revealed. A double-ridge local thickening method is proposed to improve the tool design of the skew rolling process. The local thickening principle of the double ridges is analysed, and the parameters of the tool design are optimized.
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The datasets generated and/or analysed during the current study are available from the corresponding author on reasonable request.
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Funding
This work is supported by the National Key R&D Program of China (Grant No. 2018YFB1307900) and the Engineering Research Center of Part Near-Net-Shape Forming, Ministry of Education.
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WS: conceptualization, investigation, methodology, data curation, writing—original draft, reviewing and editing. ZZ: supervision, methodology, reviewing and editing. PF: supervision, methodology, reviewing and editing. CY: supervision, conceptualization, methodology, resources, funding acquisition, reviewing and editing.
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Sun, W., Zheng, Z., Feng, P. et al. Optimization of the rolling forming process for an automobile shock absorber bushing. Int J Adv Manuf Technol 124, 2483–2492 (2023). https://doi.org/10.1007/s00170-022-10656-8
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DOI: https://doi.org/10.1007/s00170-022-10656-8