Parametric Design And Numerical Simulation Of Asymmetric Cross-section Wedge Rolling Die

In the case of non-symmetrical shaft parts,the parameters of the left and right section of the shaft are not exactly the same.If the mold parameters are selected according to the experience,The axial force generated by the left and right deformation zone during rolling is difficult to balance,resulting in the axial part of the rolling parts in the rolling process,such as the lack of meat and other defects,affecting the product size and mechanical properties.Application of a wedge or a set of wedges to ensure that the axial balance of the workpiece,not only can guarantee the product size and product quality,but also can expand the range of process parameters to reduce the mold production costs.Therefore,the influence of various factors on the quality of asymmetric shaft forming under wedge cross wedge under the wedge structure is the main content of the study.The research has theoretical and engineering application value.The main results of this paper are as follows:(1)Based on the relevant specifications of the wedge rolling die design,the asymmetrical cross wedge rolling die is designed to find out the mathematical relationship between the structural parameters of the cross wedge rolling die.(2)Using the SolidWorks secondary development technology and VB programming software,the parametric modeling of the asymmetric cross wedge rolling die is realized,which greatly reduces the design cycle of the mold and improves the optimization efficiency.(3)Through the use of DEFORM-3D finite element analysis software to track the points on the center cross section of the workpiece,the influence of the parameters of the wedge structure on the axial channeling is obtained.(4)Taking the contour shape of the asymmetric axis as the main index,the orthogonal design of the multi-structure parameters is taken as the average of the rolling force and the die length,and the optimal combination of the forming angle and the widening angle of each main wedge is obtained.(5)The deformation process of the axial cross section workpiece,the equivalent strain and the temperature field during the rolling process were analyzed by using the DEFORM-3D finite element analysis software.The whole process of the finishing section was analyzed Velocity field and the central cross section velocity field of the rolling section of each rolling stage.The variation law of the rolling force in the three directions during the rolling process,the wear of the mold and the temperature variation of the mold at different positions are analyzed.The research results of this paper have important scientific significance and engineering application value for the rolling process of innovative wedge rolling shaft parts,enriching and perfecting the asymmetric rolling theory of wedge rolling,reducing the production cost and improving the quality of rolling products.