Research On The Application Of Digital Technology In The Plastic Forming

In the field of mechanical manufacturing,digital technology is the premise of modern design,and it covers the latest technology of modern design.One of the important signs of manufacturing level is the research level of precision plastic forming.In the traditional plastic processing,the product design and production adopt the experience method of repeated testing and repairing,which leads to the long development period and high development cost,which makes it difficult to adapt to the fierce market competition.Digital technology is introduced into the whole process of plastic forming for virtual testing and manufacturing of products,which can achieve the production of clean,high-quality,high-efficiency and low-consumption plastic processing products.In this paper,plastic processing products(traction pull rod,brake cylinder mounting seat,complex section aluminum profile)are studied,and the plastic forming process is studied by means of digital technology.The main research work and conclusions are as follows:(1)The forging process of traction pull rod is analyzed and worked out,the billet making steps of drawing and flattening are designed,the billet and final forging die are also designed,the finite element simulation model is established,and the simulation of billet making and final forging forming process is carried out.The metal flow law,temperature field,equivalent stress,equivalent variation distribution and force and energy curve of final forging process are analyzed by numerical simulation,and the influence of process parameters on the forging process of traction pull rod is studied.The numerical simulation model is established,and the physical test is carried out,and the research results are verified by the test.(2)The finite element analysis software is used to numerically simulate the forging process of the brake cylinder mounting seat forging,and the defect that the forging is not filled with the defect is found,and the non-filling defect of the forging is consistent with the numerical simulation after the initial trial.The mold structure was improved,and no defects were found after the numerical simulation.The metal flow rule,the temperature field distribution,the stress distribution,the strain distribution and the forming process force energy curve of the improved forging final forging process are studied,and the physical test is carried out.The test results show that the forging has no defects,And can form a brake cylinder mounting seat forging which meets the requirements of the process.(3)According to the section structure and size of AA6061 hollow aluminum profile for crossbeam in an automobile auxiliary frame,the extrusion die is designed and the process parameters are determined.The finite element model of extrusion process is established,the distribution of extrusion pressure,speed and temperature in extrusion process is analyzed,the die structure is improved according to the simulation and test results,and the qualified aluminum profile products are obtained.