Research On The Optimization Of Blanking Process Parameters For Retainer Plate Based On Finite Element Simulation

Blanking of sheet metal is one of the most frequently used methods for plastic process of sheet metal,and the deformation area of blanking is mainly focused on the very narrow die clearance,and the process of blanking deformation becomes more complicated due to the three nonlinear problems,such as geometric nonlinearity,material nonlinearity and contact nonlinearity.To study the length of shear zone is also relatively complicated.With the rapid development of numerical simulation technology,the numerical simulation of blanking process of sheet metal is carried out with the help of finite element simulation software,it can optimize process parameters of blanking,and it improves section quality of blanking parts.Therefore,it provides an important reference for the actual production of enterprises.Retainer plate of clutch disk is taken as the research object,and DEFORM-2D software is used to simulate the blanking process of retainer plate for clutch disk,and the blanking process parameters of retainer plate are optimized based on the orthogonal test and response surface method.In addition,the stamping progressive die of retainer plate is designed to verify the optimized blanking parameters,and the main research contents of this thesis can be shown as follows:(1)The finite element model of retainer plate is established based on the analysis of key technology for simulation,DEFORM-2D is used to simulate blanking of retainer plate(the material is QSTE460TM and the thickness is 1.5 mm),and the stress and strain state of blanking process is analyzed.The optimization of blanking process parameters for retainer plate is obtained based on the orthogonal test design.It is found that the order of the influence of blanking process parameters on the length of shear zone is blanking clearances,blanking speed,radius of die respectively based on the range analysis.In addition,it is found that the influence of blanking clearance on the length of the shear zone is significant by the variance analysis.(2)The simulation experiment of retainer plate is designed based on the response surface method,and the mathematical model between the blanking process parameters and the length of smooth zone is established.The interactive influence of stamping process parameters on length of shear zone is analyzed,the conclusion is drawn that blanking clearances and radius of punch have the most interactive effect on length of shear zone.In addition,the optimized parameters of blanking for retainer plate is obtained by response surface method.(3)The progressive die of retainer plate is designed based on the process analysis of the part.The optimal process parameters of the orthogonal test and response surface method are tested by means of stamping progressive die.The results show that the relative error between experimental value and simulation value of orthogonal test and response surface method are 14.6%and 13.5%respectively,and the obtained conclusion has an important guiding significance on the design and maintenance for stamping die of enterprise.