汽车车门拉延模具设计与成形模拟_毕业设计.doc

安徽工程大学机电学院本科 毕业设计（论文） 专 业： 机械设计制造及其自动化 题 目： 汽车车门拉延模具设计 与成形模拟 作 者 姓 名： 导师及职称： 导师所在单位： 机械与汽车工程学院 汽车车门拉延模具设计与成形模拟 摘 要 本课题把汽车覆盖件车门内板作为研究的对象，以常见的板料成形分析软件Dynaform作为工具对拉延成形工艺参数进行研究。本课题设计的意义是拉延成形CAE分析可以提前预测冲压产品的缺陷，帮助工程技术人员对拉延成形工艺进行优化，以减少反复试模修模的次数，缩短产品的设计和生产周期。完成的主要工作有通过UG对汽车车门进行拉延模具的设计，再根据零件的结构特点制定合理的成形工序，采用Dynaform软件对拉深成形过程进行数值模拟，查看模拟结果中的板料流入量，根据经验和反复对试验结果的验证与分析后，重新设定相关系数，找到最合适的参数设置。 通过Dynaform软件的模拟仿真结果的分析，板料的厚度，拉延筋的设计，压边力的大小，成形的尺寸设计，冲压的次数与力度等对板料的成形结果都有很大影响，要想获得最理想的仿真结果，只有通过经验和不断地实验才能找出最佳方案。 本毕业设计的有用结论主要是用Dynaform软件可以模拟板料成形的真实过程，从而避免生产过程耗费很大的人力物力财力去试验，很大程度上节约成本。CAE数值分析仿真结果也十分准确，在中国仿真率达到97%，在国外达到100%，它的应用将越来越广泛。 关键词：拉延成形;CAE分析；Dynaform软件 Mold design and Forming Simulation of the Drawing of Car Door Abstract This topic do research on forming process parameters with the car door inner panel as the object of study, and common sheet metal forming analysis software Dynaform as a tool studied. Design of this project is the significance of drawing forming CAE analysis can predict in advance stamping product defects, helping engineers and technicians on the drawing forming process optimization to reduce repair mode repeatedly tryout times, shorten product design and production cycle. The main work completed through the car door for UG drawing die design, according to the structural characteristics of the part forming process to develop a reasonable, using software Dynaform deep drawing process is simulated view simulation results sheet inflows based on experience and repeated validation of the test results and analysis, re-set the correlation coefficient, to find the most suitable parameter settings. Through the analysis of Dynaform software simulation results, we can conclude that sheet thickness, drawing beads design, BHF size, the size of the design forming, stamping the number and intensity of such results has a significant impact on the sheet metal forming. Only through experience and constantly experim