Numerical Simulation And Experimental Research Of The Hollow Part With Four Arc-typed Cross-section By Spinning

Spinning is widely used in the field of metal forming, not only with the advantages of high forming precision, low cost and high quality, but also it can bring multiple benefits such as environmental protection, economy and so on. In recent years, some of the hollow parts with non-circular section can be produced by spinning, which breaks through the limit of spinning only producing hollow parts with circular section.This paper is financially supported by the project"Research on spinning forming method and deformation mechanism of the hollow part with non-circular section"(50775076), which is a National Natural Scientific Fund Project. In this paper, numerical simulation and experiment for the hollow part with four arc-typed cross-section are mainly studied. The research provides theoretic foundation for the spinning forming method and forming mechanism of the other kinds of non-circular cross-section hollow parts. The main research contents as follows,Firstly, this paper analyzes the spinning forming process of the hollow part with four arc-typed cross-section. And based on the three-dimensional software Pro/e and the motion simulation software ADAMS, the roller motion trail is got. Then this paper builds the FEM model with the software MSC.MARC.Secondly, this paper analyzes the FEM simulation with the FEM simulation results, and the analysis of the contents are stress and strain distributions, the influences of the main process parameters on the forming quality of the workpiece.Thirdly, this paper compares the stress and strain distributions and the differences of the influences on the main process parameters of the hollow parts with three and four arc-typed cross-section.Fourth, based on the structure of HGPX-WSM machine and the designing method of the exploratory surface of the hollow parts with three arc-typed cross-section, this paper analyzes and compares the exploratory surfaces designed by the analysis method and the method of B-spine curves fitting of the scatter data. Above all, the two exploratory surfaces with the two methods are designed and the error distribution curve is analyzed. Finally, this paper chooses the method of B-spine curves fitting of the scatter data.Fifth, with the result of the numerical simulation analysis as the direction, using the HGPX-WSM machine, do the experiment. Then, the effects of the main process parameters, such as feed rate and spindle speed are also explicated, and the influence laws are obtained. At the same time, this paper compares the theoretical results with the test results which confirms the reliability of numerical simulation.