Study Of Equi-potential Line Method And Optimal Design Of Perform Shape

Metal plastic forming has the advantages of high quality, high precision, and highefficiency. It has been widely used in the automotive, machinery, aviation, aerospace andsome other field. With the rapid development of science and technology, products becomemore and more diversified and complicated, which brings new challenges to the plasticforming technology. Preform design, as an important part in the design of forging process,can effectively solve the processing difficulties of complex parts. However, most studiesof preform design proposed by scholars focus on simple structure. The traditional methodsare only suitable to those parts with specific shape. Therefore, preform design still needsfurther study.Firstly, the key point of processing designment and its solvement were proposed byanalyzing the structure and deformation characteristics of Z shape component. And thenthe application of the equi-potential line method in extrusion and bending deformationwere studied. This method is applied to the preform designment of a gear billet. Thepreforging outline could be quickly and efficiently built, and proved to be effective.When used in a bending model, this method described the bending deformation behaviorby the extrusion deformation pattern, causing the distortion of the result. That is to say,the equi-potential line method was not suitable for the bending deformation. The formingprocess of Z shape part was accompanied by bending and extrusion. The application ofthe equi-potential line method in preform design of Z shape component was limited bythe existence of bending behaviour. The domain decomposition method and voltagereduction measurements were proposed to expand application range of the equi-potentialline method. And it was proved effective to be applied in the perform designment of a Zshape part via numerical simulation method.Furthermore, this paper studied the forming process of Z shape parts and theapplications of equi-potential line method. Through this research, the general formingprocess of Z shape components are proposed. What’s more, the auther come up with twomeans to improve the application of the equi-potential line method, and it has beenproved to be efficient by the numerical simulation.