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Abstract: The multi-pass scheduling method is a key issue in die-less spinning for determining the quality of the final products, including their shape deviations and wall thicknesses, and has drawn increasing interest in recent studies devoted to trying to improve the accuracy of the formed parts. In this paper, two main parameters, roller path profiles and deformation allocations in each pass, are considered in newly proposed multi-pass scheduling and optimizing methods in die-less spinning. Four processing methods with different roller path profiles and with three deformation allocation methods are proposed for investigating the influence of scheduling parameters on product qualities. The ‘similar geometry principle for restraining shape deviation’ and the ‘small curvature principle for maintaining wall thickness’ are presented for optimal design of roller path profiles; in addition, the ‘uniform allocation principle for maintaining wall thickness’ and the ‘large deformation principle for restraining shape deviation’ are brought forward as suggestions for deformation allocations. Based on these principles, a scheduling method denoted by RF+(FP & EHS) is presented to improve the comprehensive quality of a product of die-less spinning.

This manuscript mainly investigated the influence of the roller path profiles and deformation allocations in each pass on the shape deviation and wall thickness during die-less spinning. The "similar geometry principle for shape deviation restraining" and the "small curvature principle for wall thickness maintaining" have been presented for optimal design of roller path profiles; in addition, the "large deformation principle for shape deviation restraining" and the "uniform allocation principle for wall thickness maintaining " have been brought forward as suggestions for deformation allocations. Based on these principles, a scheduling method denoted by RF+ERS&FP was presented to improve the comprehensive quality of a die-less spinning product.

无芯模旋压道次规划方法研究

[1]El-Khabeery, M.M., Fattouh, M., El-Sheikh, M.N., et al., 1991. On the conventional simple spinning of cylindrical aluminum cups. International Journal of Machine Tools and Manufacture, 31(2):203-219.

[2]Hayama, M., Kudo, H., Shinokura, T., 1970. Study of the pass schedule in conventional simple spinning. Bulletin of JSME, 13(65):1358-1365.

[3]Jia, Z., Han, Z.R., Xu, Q., et al., 2015. Effects of processing parameters on the surface quality of square section die-less spinning. The International Journal of Advanced Manufacturing Technology, 80(9):1689-1700.

[4]Kang, D.C., Gao, X.C., Meng, X.F., et al., 1999. Study on the deformation mode of conventional spinning of plates. Journal of Materials Processing Technology, 91(1-3):226-230.

[5]Kawai, K., Yang, L.N., Kudo, H., 2001. A flexible shear spinning of truncated conical shells with a general-purpose mandrel. Journal of Materials Processing Technology, 113(1-3):28-33.

[6]Kawai, K., Yang, L.N., Kudo, H., 2007. A flexible shear spinning of axi-symmetrical shells with a general-purpose mandrel. Journal of Materials Processing Technology, 192-193:13-17.

[7]Kopp, R., Wiegels, H., 1998. Einführung in Die Umformtechnik. Kang, Y., Hong, Z., translators, 2010. Higher Education Press, Beijing, China (in Chinese).

[8]Li, Y., Wang, J., Lu, G.D., et al., 2014. A numerical study of the effects of roller paths on dimensional precision in die-less spinning of sheet metal. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 15(6):432-446.

[9]Lin, X.J., Ge, T., Wang, J., et al., 2015. Numerical investigation of effects of deformation allocation on multi-pass conventional spinning process of curvilinear generatrix parts. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 229(18):3299-3307.

[10]Liu, C.H., 2007. The simulation of the multi-pass and die-less spinning process. Journal of Materials Processing Technology, 192-193:518-524.

[11]Liu, J.H., Yang, H., Li, Y.Q., 2002. A study of the stress and strain distributions of first-pass conventional spinning under different roller-traces. Journal of Materials Processing Technology, 129(1-3):326-329.

[12]Music, O., Allwood, J.M., Kawai, K., 2010. A review of the mechanics of metal spinning. Journal of Materials Processing Technology, 210(1):3-23.

[13]Polyblank, J.A., Allwood, J.M., 2015. Parametric toolpath design in metal spinning. CIRP Annals―Manufacturing Technology, 64(1):301-304.

[14]Quigley, E., Monaghan, J., 2000. Metal forming: an analysis of spinning processes. Journal of Materials Processing Technology, 103(1):114-119.

[15]Sugita, Y., Arai, H., 2015. Formability in synchronous multipass spinning using simple pass set. Journal of Materials Processing Technology, 217:336-344.

[16]Wang, L., Long, H., 2011. A study of effects of roller path profiles on tool forces and part wall thickness variation in conventional metal spinning. Journal of Materials Processing Technology, 211(12):2140-2151.

[17]Wang, L., Long, H., 2013. Roller path design by tool compensation in multi-pass conventional spinning. Materials & Design, 46:645-653.

[18]Wong, C.C., Dean, T.A., Lin, J., 2003. A review of spinning, shear forming and flow forming processes. International

[19]Journal of Machine Tools and Manufacture, 43(14):1419-1435.

[20]Xia, Q., Xiao, G., Long, H., et al., 2014. A review of process advancement of novel metal spinning. International Journal of Machine Tools and Manufacture, 85:100-121.