Abstract
In the process of automatically casing medicinal aluminum tubes with an inner plastic liner, the mechanical conditions and intrinsic characteristics significantly influence the outcome, often resulting in poor alignment accuracy and issues like squashing or bending of the plastic tube. To address this, based on the establishment of mechanical mathematical models for one-point and two-points contact assembly stages, a multi-stage assembly process mechanical analysis method for the automatic casing process was proposed. Initially, an automatic casing module and method utilizing a transitional tube for assistance were developed, considering the actual discontinuous production characteristics of casing. Subsequently, by integrating the automatic casing process, mechanical mathematical models for one-point and two-points contact assembly stages were constructed based on the mechanical equilibrium equation, accurately describing the representation of various parameter characteristics during the casing process. Following this, the impact of the plastic tube’s initial position and insertion speed on the automatic casing characteristics was analyzed, combining the mechanical model and finite element dynamic contact analysis model. Based on these results, optimized parameter conditions meeting the casing process requirements were provided. Finally, after verification through casing experimental setups, it was found that the process parameter characteristics extracted by the proposed method exhibit significant effectiveness, with the success rate of using transitional assistance for casing substantially outperforming the direct insertion of plastic tubes into aluminum tubes. The proposed method offers certain theoretical guidance for optimizing both the initial posture and casing speed in the casing process.
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Acknowledgements
This work was funded by major project for technological innovation of Hubei Province of China(2023BAB088); Hubei Provincial Technical Innovation Project (Major Project) (2022BEC012); Hubei Province Support Enterprise Technological Innovation and Development Project(2021BAB010); Scientific Research Foundation for Doctoral Program of Hubei University of Technology (XJ2022001001).
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Yan, G., Ming, Z., Zhou, J. et al. Influence of Key Parameters of Medicinal Aluminum Tube on Automatic Casing Process. Int. J. Precis. Eng. Manuf. (2024). https://doi.org/10.1007/s12541-024-01031-6
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DOI: https://doi.org/10.1007/s12541-024-01031-6