Study On Hot-forming Production Process Simulation And Optimization Based On DELMIA Software

As one of the four major process of automobile production,stamping has long been a important process in the car factory.Due to the particularity production environment of stamping,collisions between press and automation equipment may happen in production line planning stage.Traditional metheod can't predict and solve the possible problems before actual production.With the development of computer and virtual manufacturing technology,simulation optimization method is applied to the stamping production process and become a trend of modern press industry.Developing simulation system of automatic stamping production process is of great significance to improving the level of stamping technology.Modeling and Simulation of production line in virtual environment,conduct ing the research to the automation of the production process,not only can save a lot of production line design costs,but also can improve the production efficiency and save the cost of manufacture.The main work in this paper is concluded as follows.(1)Based on the modularization,the simulation model of hot-forming production is built in the DELMIA virtual environments.Stamping die model is converted into lightweight model.One method of kinematic simulation and assembly based on lightweight model is proposed.The motion simulation of the hot-forming process is built based on DELMIA/DPM simulation module.(2)Taking the B-pillar hot-forming for example,this paper plans the moving time of the production equipment and the whole production cycle.One method of Tatk time optimization based on axial bounding box collision detection theory is proposed.Through this method,optimization of Tatk time of B-pillar hot-forming is implemented.(3)The simulation model is different according to the forming parts.Based on the DELMIA platform,this paper researches the model of hot-forming and develops a general simulation system which is suitable for different forming dies.It achieves the movement of automatic assembly,interactive process planning and simulation result analysis.It can also predict in advance the problems that may arise in the process and solve them,such as interference.