| The roll processing product is widely applied for all kinds of industry by its material saving,high efficiency,economy,environment protection and other advantages,in the automobile sealing strips,the metal steel belts in a part of composite sealing strip are adopted by the rolling processing method.At present,most domestic manufacturers of sealing strip carry out the scroll wheel design and technical compilation by the manual calculation,drawing the scroll wheel mould by AutoCAD software and repeated on-site commissioning in the steel belt production process,but this kind of trial and error method is very difficult to provide the correct basis and guidance for the actual production,therefore,carry out the research on the optimization of steel belt roll forming technology has an important significance for the enterprises to save the energy and materials.This article makes the research on the water-cut sealing strip rolling steel belt in one type of automobile as below:Firstly,according to the principle of roll forming process design,the article carries out the rolling process design for the unequal asymmetric sectional steel belt on two sides of flange edge,it makes the design of forming work procedure by M1 modules(professional designed modules of section)of the roll forming professional designed software COPRA,so as to summarize the process parameter design methods for sealing strip steel belt and generate the forming work procedure drawings;it carries out the preliminary simulation analysis for the forming work procedure according to H2 deformation technology module(DTM)of COPRA software,adopts the preliminary judgement for the rationality of the technological parameters,and makes the optimization for the process parameters by the simulation result.It carries out the optimization for the forming process design and fast simulation,design efficiency,design accuracy and parameters by COPRA software which is obvious better than the traditional design manners,and at the same time it can simplify the workload of finite element simulation and optimization in the subsequent rolling process.Secondly,due to the roll forming process is a very complex three-dimensional elastic-plastic deformation problem,COPRA software simulation only considers the belt bending and deformation under several specified parameters,therefore,according to the actual conditions in the production,the article sets up the analysis model,it adopts the further numerical si.mulation for the forming process by the finite element analysis software DEFORM-3D,it analyzes and forecasts the problems may exist in the belt forming process,optimizes the process parameter by the forming defect to modify the forming scheme,and then it carries out the contrastive analysis for the optimized scheme and initial scheme from the forming appearance,distribution regularity of stress and strain,section dimension and so on,so as to analyze the feasibility of optimized process scheme.At last,base on the above established finite element analysis model and simulation result,this article also makes the research on the number of forming pass,friction coefficient,the downhill value in the downhill forming method and other forming parameters have the impact on the forming process,which can provide a certain of reference basis for the practical production and subsequent research.At present,there are very few of research literatures of sealing strip rolling steel belt published in the public,therefore,this thesis’s research result can be as the reference of the design of sealing strip rolling steel belt as well as the optimization and adjustment of process parameter,in addition,the research method can supply the reference value to the research of similar product forming process. |
