| Spinning technology has wide application prospect in aerospace field.Spinning has the characteristics of short development time and low tooling cost.It is suitable for small batch production.At this stage,spinning only in the traditional spinning has a wide range of application,but in the asymmetrical spinning,spinning is still in the scientific exploration stage.The forming process of square cone shaped parts by spinning process has been the focus and difficulty of research.In this paper,the fixed-initial-angle step-length method had been well developed to design the roller path of square cone die-less spinning.The author deduced the roller path by analyzing the geometry of the square cone,and turned the roller path into NC code.Thus,the processing of the cone box shaped parts is realized.The part made by this method meets the requirements and the surface does not have skin,ripple,drum package,cracks and other common defects.The length and width of the spinning parts are measured and compared with the theoretical model.To verify whether the formula is correct or not.There is an error between the measured results and theoretical models and the forming mechanism can be analyzed.The spinning processes with circular and square blank shape are experimented respectively and study on the axial spinning depth square section die-less spinning.At the same time,with the help of the finite element numerical simulation software Abaqus to carry out finite element analysis about the spinning process,and draw relevant conclusions about stress,strain.Finally,with the help of the finite element numerical simulation software to draw relevant a conclusion about influence of the cone angle on the deformation of the metal.In this paper,using the combination method of experiment and numerical simulation of the process,the forming mechanism of research work on the spinning of the cone box shaped parts is studied.The study lay the foundation for the asymmetrical part,has higher theoretical significance. |
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