Automatic Optimization System Of The Guide Roller Movement For Ring Rolling Based On ABAQUS

As a kind of plastic processing technology,Ring rolling,called ring rolling-extending or hole-extending,with its low hardware equipment,high efficiency,energy saving,material saving and other significant characteristics,is widely used in automobiles,ships,metallurgy,chemical industry,aerospace and other fields of high precision forming process.Due to the ring rolling process and rolling characteristics of its own,which make it unstable in the ring rolling process to lead to various defects of the rolled products.Making precise rolling ring stable becomes a difficult problem.The deflection of ring vibration are important factors which influence the stability of ring rolling system,and reasonable optimization and control of the guide roller movement can significantly reduce the ring deflection vibration.Therefore,the research of Automatic Optimization System of the Guide Roller Movement for Ring Rolling to realize the stability of the ring rolling is of important theoretical significance and practical value.Based on the theory of ring rolling and the practice of rolling process,the automatic optimization method of the guide roller is established by using the finite element software ABAQUS basic platform,and using the Python language to write the script program.And it can realize the automatic operation of a series of modules such as parameterization modeling,model analysis,data extraction,and judgment of the size of the loop deflection,optimization of the guide roller trajectory and processing and output of the result data.The system can control the guide roller motion trajectory according to the partial deflection feedback of the ring,and can automatically optimize the steering roller speed correction coefficient by several iterations,and can achieve system modeling,analysis and other modules of the repeated operation,and can also be directly output after the optimization of the guide roller movement trajectory.This is of great significance for improving the rolling precision of the ring,the rolling efficiency of the ring,the stability of the rolling system and the degree of automation.The main research work and achievements of this paper as follows:1.According to the invariant principle of ring volume during the rolling process,the ring rolling system model is established,and the evaluation method of the rolling stability of the ring is selected,and the initial trajectory of the geometric center of guide roller is determined.2.The automatic optimization method of the guide roller is established.And the speed correction coefficient of guide roller is as a control variable and the deflection of geometric center of the ring amount is as a evaluation standard of ring rolling stability,and the position of the guide roller is modified by the iterative operation scheme.3.With the finite element software ABAQUS foundation,the automatic optimization system is built by using the Python language to write kernel scripting programs,which set model of the establishment,analysis,extraction,judgment,optimization,the results of data processing and other functions in one.4.The correctness of the analysis results of the automatic optimization system of the ring rolling guide roller is verified by comparing the trajectories of the guide rollers before and after the optimization.